./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY --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 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:06:32,435 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:06:32,438 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:06:32,509 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:06:32,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:06:32,519 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:06:32,521 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:06:32,524 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:06:32,526 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:06:32,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:06:32,530 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:06:32,535 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:06:32,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:06:32,548 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:06:32,551 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:06:32,557 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:06:32,560 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:06:32,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:06:32,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:06:32,575 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:06:32,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:06:32,580 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:06:32,585 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:06:32,586 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:06:32,595 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:06:32,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:06:32,596 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:06:32,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:06:32,600 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:06:32,601 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:06:32,602 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:06:32,603 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:06:32,606 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:06:32,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:06:32,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:06:32,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:06:32,612 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:06:32,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:06:32,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:06:32,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:06:32,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:06:32,616 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:06:32,670 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:06:32,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:06:32,673 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:06:32,673 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:06:32,675 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:06:32,675 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:06:32,676 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:06:32,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:06:32,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:06:32,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:06:32,678 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:06:32,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:06:32,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:06:32,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:06:32,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:06:32,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:06:32,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:06:32,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:06:32,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:06:32,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:06:32,681 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:06:32,682 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:06:32,682 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:06:32,683 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:06:32,683 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:06:32,683 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:06:32,684 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:06:32,684 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:06:32,684 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:06:32,686 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:06:32,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:06:32,687 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:06:32,688 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_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-07 08:06:33,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:06:33,073 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:06:33,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:06:33,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:06:33,079 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:06:33,081 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 08:06:33,189 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/a567d97eb/7bb7dac86bcd469eb15b16c5c8601a37/FLAG3505aea72 [2021-11-07 08:06:33,854 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:06:33,855 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 08:06:33,901 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/a567d97eb/7bb7dac86bcd469eb15b16c5c8601a37/FLAG3505aea72 [2021-11-07 08:06:34,011 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/a567d97eb/7bb7dac86bcd469eb15b16c5c8601a37 [2021-11-07 08:06:34,014 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:06:34,016 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:06:34,022 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:06:34,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:06:34,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:06:34,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:06:34" (1/1) ... [2021-11-07 08:06:34,034 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6611ac13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:34, skipping insertion in model container [2021-11-07 08:06:34,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:06:34" (1/1) ... [2021-11-07 08:06:34,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:06:34,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:06:34,835 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 08:06:34,981 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 08:06:34,989 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:06:34,998 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:06:35,032 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 08:06:35,130 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 08:06:35,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:06:35,171 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:06:35,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35 WrapperNode [2021-11-07 08:06:35,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:06:35,173 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:06:35,173 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:06:35,173 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:06:35,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,214 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:06:35,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:06:35,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:06:35,313 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:06:35,321 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,430 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,446 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:06:35,447 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:06:35,447 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:06:35,447 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:06:35,453 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (1/1) ... [2021-11-07 08:06:35,471 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:06:35,489 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:35,505 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:06:35,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:06:35,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:06:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:06:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:06:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:06:35,567 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:06:35,568 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:06:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:06:35,569 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:06:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:06:35,570 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:06:35,571 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:06:37,234 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:06:37,234 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 08:06:37,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:37 BoogieIcfgContainer [2021-11-07 08:06:37,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:06:37,239 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:06:37,239 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:06:37,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:06:37,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:06:34" (1/3) ... [2021-11-07 08:06:37,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afbce9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:37, skipping insertion in model container [2021-11-07 08:06:37,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:35" (2/3) ... [2021-11-07 08:06:37,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1afbce9a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:37, skipping insertion in model container [2021-11-07 08:06:37,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:37" (3/3) ... [2021-11-07 08:06:37,247 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-1.i [2021-11-07 08:06:37,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:06:37,253 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 08:06:37,308 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:06:37,314 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:06:37,315 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 08:06:37,336 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:06:37,342 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:37,342 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:37,343 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:37,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:37,349 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 08:06:37,359 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:37,360 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [337462515] [2021-11-07 08:06:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:37,361 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:37,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:37,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:37,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [337462515] [2021-11-07 08:06:37,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [337462515] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:37,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:37,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:06:37,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822073966] [2021-11-07 08:06:37,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:06:37,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:37,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:06:37,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:06:37,553 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:37,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:37,598 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-07 08:06:37,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:06:37,600 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 08:06:37,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:37,618 INFO L225 Difference]: With dead ends: 402 [2021-11-07 08:06:37,619 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 08:06:37,623 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:06:37,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 08:06:37,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 08:06:37,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:37,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 08:06:37,706 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 08:06:37,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:37,707 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 08:06:37,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:37,708 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 08:06:37,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:06:37,709 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:37,709 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:37,710 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:06:37,710 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:37,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:37,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 08:06:37,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:37,714 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526025083] [2021-11-07 08:06:37,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:37,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:37,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:37,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:37,851 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:37,851 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526025083] [2021-11-07 08:06:37,851 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526025083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:37,851 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:37,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:06:37,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754978333] [2021-11-07 08:06:37,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:06:37,854 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:37,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:06:37,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:06:37,858 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:38,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:38,396 INFO L93 Difference]: Finished difference Result 445 states and 582 transitions. [2021-11-07 08:06:38,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:06:38,397 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 08:06:38,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:38,401 INFO L225 Difference]: With dead ends: 445 [2021-11-07 08:06:38,401 INFO L226 Difference]: Without dead ends: 337 [2021-11-07 08:06:38,403 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:06:38,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-11-07 08:06:38,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 200. [2021-11-07 08:06:38,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.3453608247422681) internal successors, (261), 199 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2021-11-07 08:06:38,421 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2021-11-07 08:06:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:38,422 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2021-11-07 08:06:38,422 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2021-11-07 08:06:38,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:06:38,425 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:38,426 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:38,426 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:06:38,426 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2021-11-07 08:06:38,427 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:38,428 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904584442] [2021-11-07 08:06:38,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:38,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:38,458 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:38,459 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2076152098] [2021-11-07 08:06:38,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:38,459 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:38,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:38,461 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:38,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:06:38,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:38,688 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:06:38,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:38,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:38,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:38,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904584442] [2021-11-07 08:06:38,943 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:38,943 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076152098] [2021-11-07 08:06:38,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076152098] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:38,944 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:38,944 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:06:38,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336739174] [2021-11-07 08:06:38,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:38,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:38,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:38,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:38,950 INFO L87 Difference]: Start difference. First operand 200 states and 261 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:39,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:39,030 INFO L93 Difference]: Finished difference Result 417 states and 549 transitions. [2021-11-07 08:06:39,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:39,031 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:06:39,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:39,033 INFO L225 Difference]: With dead ends: 417 [2021-11-07 08:06:39,034 INFO L226 Difference]: Without dead ends: 221 [2021-11-07 08:06:39,037 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:39,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-11-07 08:06:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 220. [2021-11-07 08:06:39,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 214 states have (on average 1.3130841121495327) internal successors, (281), 219 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:39,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 281 transitions. [2021-11-07 08:06:39,057 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 281 transitions. Word has length 64 [2021-11-07 08:06:39,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:39,058 INFO L470 AbstractCegarLoop]: Abstraction has 220 states and 281 transitions. [2021-11-07 08:06:39,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:39,062 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 281 transitions. [2021-11-07 08:06:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:06:39,071 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:39,072 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:39,102 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-07 08:06:39,287 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:39,287 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:39,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:39,288 INFO L85 PathProgramCache]: Analyzing trace with hash 521200010, now seen corresponding path program 1 times [2021-11-07 08:06:39,288 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:39,289 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190481588] [2021-11-07 08:06:39,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:39,289 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:39,315 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:39,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [703154656] [2021-11-07 08:06:39,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:39,316 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:39,316 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:39,317 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:39,337 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:06:39,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:39,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:06:39,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:39,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:39,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190481588] [2021-11-07 08:06:39,727 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:39,727 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [703154656] [2021-11-07 08:06:39,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [703154656] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:39,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:39,730 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:06:39,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488074518] [2021-11-07 08:06:39,731 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:06:39,731 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:06:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:06:39,732 INFO L87 Difference]: Start difference. First operand 220 states and 281 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:39,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:39,853 INFO L93 Difference]: Finished difference Result 428 states and 550 transitions. [2021-11-07 08:06:39,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:06:39,853 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:06:39,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:39,855 INFO L225 Difference]: With dead ends: 428 [2021-11-07 08:06:39,855 INFO L226 Difference]: Without dead ends: 212 [2021-11-07 08:06:39,857 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:06:39,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-07 08:06:39,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 206. [2021-11-07 08:06:39,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 200 states have (on average 1.3) internal successors, (260), 205 states have internal predecessors, (260), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:39,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 260 transitions. [2021-11-07 08:06:39,869 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 260 transitions. Word has length 64 [2021-11-07 08:06:39,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:39,869 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 260 transitions. [2021-11-07 08:06:39,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:39,870 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 260 transitions. [2021-11-07 08:06:39,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:06:39,873 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:39,873 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:39,914 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:40,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:40,087 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:40,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:40,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2021-11-07 08:06:40,088 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:40,088 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686957934] [2021-11-07 08:06:40,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:40,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:40,100 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:40,100 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120912746] [2021-11-07 08:06:40,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:40,100 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:40,101 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:40,102 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:40,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:06:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:40,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:06:40,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:40,735 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:40,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686957934] [2021-11-07 08:06:40,736 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:40,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120912746] [2021-11-07 08:06:40,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [120912746] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:40,737 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:40,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:06:40,747 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445186293] [2021-11-07 08:06:40,748 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:40,748 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:40,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:40,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:40,749 INFO L87 Difference]: Start difference. First operand 206 states and 260 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:40,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:40,862 INFO L93 Difference]: Finished difference Result 542 states and 683 transitions. [2021-11-07 08:06:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:06:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:40,870 INFO L225 Difference]: With dead ends: 542 [2021-11-07 08:06:40,870 INFO L226 Difference]: Without dead ends: 340 [2021-11-07 08:06:40,871 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 340 states. [2021-11-07 08:06:40,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 340 to 312. [2021-11-07 08:06:40,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 312 states, 306 states have (on average 1.2843137254901962) internal successors, (393), 311 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 393 transitions. [2021-11-07 08:06:40,883 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 393 transitions. Word has length 64 [2021-11-07 08:06:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:40,883 INFO L470 AbstractCegarLoop]: Abstraction has 312 states and 393 transitions. [2021-11-07 08:06:40,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:40,884 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 393 transitions. [2021-11-07 08:06:40,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:06:40,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:40,885 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:40,925 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:41,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:41,111 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:41,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:41,112 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 08:06:41,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:41,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433757077] [2021-11-07 08:06:41,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:41,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:41,149 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:41,149 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106620770] [2021-11-07 08:06:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:41,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:41,150 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:41,152 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:41,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:06:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:41,404 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:06:41,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:41,626 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:06:41,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 08:06:41,677 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:06:41,678 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:41,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433757077] [2021-11-07 08:06:41,678 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:41,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106620770] [2021-11-07 08:06:41,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2106620770] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:41,679 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:41,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:06:41,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644782528] [2021-11-07 08:06:41,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:06:41,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:41,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:06:41,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:06:41,683 INFO L87 Difference]: Start difference. First operand 312 states and 393 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:42,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:42,124 INFO L93 Difference]: Finished difference Result 421 states and 537 transitions. [2021-11-07 08:06:42,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:06:42,125 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:06:42,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:42,128 INFO L225 Difference]: With dead ends: 421 [2021-11-07 08:06:42,128 INFO L226 Difference]: Without dead ends: 396 [2021-11-07 08:06:42,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:06:42,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2021-11-07 08:06:42,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 314. [2021-11-07 08:06:42,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 308 states have (on average 1.2824675324675325) internal successors, (395), 313 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:42,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 395 transitions. [2021-11-07 08:06:42,143 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 395 transitions. Word has length 71 [2021-11-07 08:06:42,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:42,144 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 395 transitions. [2021-11-07 08:06:42,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:42,144 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 395 transitions. [2021-11-07 08:06:42,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 08:06:42,146 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:42,146 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:42,194 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:42,371 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:42,371 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:42,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:42,372 INFO L85 PathProgramCache]: Analyzing trace with hash -2000986198, now seen corresponding path program 1 times [2021-11-07 08:06:42,372 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:42,372 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [971796835] [2021-11-07 08:06:42,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:42,372 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:42,392 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:42,392 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [802681902] [2021-11-07 08:06:42,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:42,392 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:42,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:42,393 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:42,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-07 08:06:42,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:42,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:06:42,714 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:43,004 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:06:43,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:43,005 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [971796835] [2021-11-07 08:06:43,005 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:43,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [802681902] [2021-11-07 08:06:43,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [802681902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:43,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:43,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:06:43,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109680981] [2021-11-07 08:06:43,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:43,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:43,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:43,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:43,011 INFO L87 Difference]: Start difference. First operand 314 states and 395 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:43,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:43,114 INFO L93 Difference]: Finished difference Result 525 states and 681 transitions. [2021-11-07 08:06:43,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:43,115 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 08:06:43,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:43,118 INFO L225 Difference]: With dead ends: 525 [2021-11-07 08:06:43,119 INFO L226 Difference]: Without dead ends: 356 [2021-11-07 08:06:43,119 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:43,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2021-11-07 08:06:43,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 354. [2021-11-07 08:06:43,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 354 states, 348 states have (on average 1.25) internal successors, (435), 353 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:43,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 354 states to 354 states and 435 transitions. [2021-11-07 08:06:43,135 INFO L78 Accepts]: Start accepts. Automaton has 354 states and 435 transitions. Word has length 103 [2021-11-07 08:06:43,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:43,136 INFO L470 AbstractCegarLoop]: Abstraction has 354 states and 435 transitions. [2021-11-07 08:06:43,137 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:43,137 INFO L276 IsEmpty]: Start isEmpty. Operand 354 states and 435 transitions. [2021-11-07 08:06:43,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 08:06:43,138 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:43,139 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:43,186 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:43,355 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:43,356 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:43,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:43,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1973776046, now seen corresponding path program 1 times [2021-11-07 08:06:43,356 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:43,356 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215930977] [2021-11-07 08:06:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:43,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:43,381 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:43,382 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [849715786] [2021-11-07 08:06:43,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:43,382 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:43,384 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:43,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-07 08:06:43,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:43,695 INFO L263 TraceCheckSpWp]: Trace formula consists of 349 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:06:43,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:43,965 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:06:43,965 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:43,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215930977] [2021-11-07 08:06:43,966 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:43,966 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [849715786] [2021-11-07 08:06:43,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [849715786] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:43,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:43,967 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:06:43,967 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924283385] [2021-11-07 08:06:43,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:06:43,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:43,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:06:43,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:06:43,969 INFO L87 Difference]: Start difference. First operand 354 states and 435 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:44,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:44,058 INFO L93 Difference]: Finished difference Result 540 states and 676 transitions. [2021-11-07 08:06:44,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:06:44,058 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 08:06:44,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:44,062 INFO L225 Difference]: With dead ends: 540 [2021-11-07 08:06:44,062 INFO L226 Difference]: Without dead ends: 331 [2021-11-07 08:06:44,063 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:06:44,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-07 08:06:44,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 326. [2021-11-07 08:06:44,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 326 states, 320 states have (on average 1.228125) internal successors, (393), 325 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:44,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 326 states to 326 states and 393 transitions. [2021-11-07 08:06:44,075 INFO L78 Accepts]: Start accepts. Automaton has 326 states and 393 transitions. Word has length 103 [2021-11-07 08:06:44,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:44,081 INFO L470 AbstractCegarLoop]: Abstraction has 326 states and 393 transitions. [2021-11-07 08:06:44,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:44,082 INFO L276 IsEmpty]: Start isEmpty. Operand 326 states and 393 transitions. [2021-11-07 08:06:44,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 08:06:44,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:44,083 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:44,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:44,323 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:44,323 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1090927200, now seen corresponding path program 1 times [2021-11-07 08:06:44,324 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:44,324 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295225712] [2021-11-07 08:06:44,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:44,325 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:44,343 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:44,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [277881166] [2021-11-07 08:06:44,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:44,344 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:44,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:44,345 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:44,379 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-07 08:06:44,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:44,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 335 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:06:44,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:45,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:45,043 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:45,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295225712] [2021-11-07 08:06:45,043 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:45,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [277881166] [2021-11-07 08:06:45,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [277881166] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:45,043 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:45,043 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:06:45,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012980850] [2021-11-07 08:06:45,044 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:06:45,044 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:45,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:06:45,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:06:45,045 INFO L87 Difference]: Start difference. First operand 326 states and 393 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:45,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:06:45,374 INFO L93 Difference]: Finished difference Result 740 states and 900 transitions. [2021-11-07 08:06:45,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:06:45,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 08:06:45,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:06:45,378 INFO L225 Difference]: With dead ends: 740 [2021-11-07 08:06:45,379 INFO L226 Difference]: Without dead ends: 462 [2021-11-07 08:06:45,380 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 101 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:06:45,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2021-11-07 08:06:45,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 410. [2021-11-07 08:06:45,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 404 states have (on average 1.2301980198019802) internal successors, (497), 409 states have internal predecessors, (497), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:45,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 497 transitions. [2021-11-07 08:06:45,397 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 497 transitions. Word has length 103 [2021-11-07 08:06:45,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:06:45,397 INFO L470 AbstractCegarLoop]: Abstraction has 410 states and 497 transitions. [2021-11-07 08:06:45,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 497 transitions. [2021-11-07 08:06:45,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 08:06:45,399 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:06:45,399 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:45,439 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:45,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:45,616 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:06:45,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:45,616 INFO L85 PathProgramCache]: Analyzing trace with hash 541561274, now seen corresponding path program 1 times [2021-11-07 08:06:45,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:45,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052879730] [2021-11-07 08:06:45,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:45,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:45,659 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-07 08:06:45,671 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1306769759] [2021-11-07 08:06:45,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:45,672 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:45,672 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:45,677 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:45,698 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-07 08:06:46,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:46,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 360 conjuncts, 51 conjunts are in the unsatisfiable core [2021-11-07 08:06:46,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:46,044 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:06:46,077 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-07 08:06:46,130 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:46,134 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:46,135 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:46,138 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 29 [2021-11-07 08:06:47,452 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,453 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,456 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,457 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,459 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,461 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2021-11-07 08:06:47,472 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,474 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,475 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,477 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,478 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 4 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 42 [2021-11-07 08:06:47,584 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,585 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,587 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,594 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,596 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,598 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,599 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,600 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 11 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 54 [2021-11-07 08:06:47,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,672 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,674 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,675 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,676 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,678 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:47,679 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 52 treesize of output 45 [2021-11-07 08:06:47,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-11-07 08:06:47,712 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 23 [2021-11-07 08:06:47,727 INFO L354 Elim1Store]: treesize reduction 4, result has 71.4 percent of original size [2021-11-07 08:06:47,728 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 26 [2021-11-07 08:06:49,836 INFO L354 Elim1Store]: treesize reduction 364, result has 11.9 percent of original size [2021-11-07 08:06:49,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 2832 treesize of output 2281 [2021-11-07 08:06:49,895 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:49,896 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:49,898 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:49,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-07 08:06:56,595 WARN L207 SmtUtils]: Spent 6.69 s on a formula simplification. DAG size of input: 354 DAG size of output: 88 [2021-11-07 08:06:56,597 INFO L354 Elim1Store]: treesize reduction 7776, result has 3.0 percent of original size [2021-11-07 08:06:56,598 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 7 disjoint index pairs (out of 6 index pairs), introduced 6 new quantified variables, introduced 16 case distinctions, treesize of input 3301 treesize of output 1804 [2021-11-07 08:06:56,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:56,684 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052879730] [2021-11-07 08:06:56,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-07 08:06:56,685 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306769759] [2021-11-07 08:06:56,685 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Some non-self update cases but no top-level DER relation [2021-11-07 08:06:56,685 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:56,685 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-11-07 08:06:56,686 ERROR L172 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2021-11-07 08:06:56,686 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-11-07 08:06:56,694 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:56,696 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:56,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:56,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:56,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:56,697 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:56,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:56,918 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-11-07 08:06:56,922 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:56,925 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:06:56,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:06:56 BoogieIcfgContainer [2021-11-07 08:06:56,986 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:06:56,986 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:06:56,987 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:06:56,987 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:06:56,988 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:37" (3/4) ... [2021-11-07 08:06:56,994 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-07 08:06:56,994 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:06:56,995 INFO L168 Benchmark]: Toolchain (without parser) took 22979.50 ms. Allocated memory was 88.1 MB in the beginning and 218.1 MB in the end (delta: 130.0 MB). Free memory was 51.3 MB in the beginning and 114.6 MB in the end (delta: -63.3 MB). Peak memory consumption was 65.7 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:56,996 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 88.1 MB. Free memory was 58.3 MB in the beginning and 58.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:06:56,997 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1149.38 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.2 MB in the beginning and 65.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:56,997 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.90 ms. Allocated memory is still 113.2 MB. Free memory was 65.7 MB in the beginning and 58.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:56,998 INFO L168 Benchmark]: Boogie Preprocessor took 134.04 ms. Allocated memory is still 113.2 MB. Free memory was 58.8 MB in the beginning and 51.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:56,999 INFO L168 Benchmark]: RCFGBuilder took 1789.90 ms. Allocated memory is still 113.2 MB. Free memory was 51.5 MB in the beginning and 73.6 MB in the end (delta: -22.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:57,000 INFO L168 Benchmark]: TraceAbstraction took 19747.13 ms. Allocated memory was 113.2 MB in the beginning and 218.1 MB in the end (delta: 104.9 MB). Free memory was 73.6 MB in the beginning and 114.6 MB in the end (delta: -41.0 MB). Peak memory consumption was 122.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:57,000 INFO L168 Benchmark]: Witness Printer took 7.89 ms. Allocated memory is still 218.1 MB. Free memory is still 114.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:06:57,006 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 88.1 MB. Free memory was 58.3 MB in the beginning and 58.2 MB in the end (delta: 25.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 1149.38 ms. Allocated memory was 88.1 MB in the beginning and 113.2 MB in the end (delta: 25.2 MB). Free memory was 51.2 MB in the beginning and 65.7 MB in the end (delta: -14.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 138.90 ms. Allocated memory is still 113.2 MB. Free memory was 65.7 MB in the beginning and 58.8 MB in the end (delta: 6.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 134.04 ms. Allocated memory is still 113.2 MB. Free memory was 58.8 MB in the beginning and 51.5 MB in the end (delta: 7.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1789.90 ms. Allocated memory is still 113.2 MB. Free memory was 51.5 MB in the beginning and 73.6 MB in the end (delta: -22.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 19747.13 ms. Allocated memory was 113.2 MB in the beginning and 218.1 MB in the end (delta: 104.9 MB). Free memory was 73.6 MB in the beginning and 114.6 MB in the end (delta: -41.0 MB). Peak memory consumption was 122.5 MB. Max. memory is 16.1 GB. * Witness Printer took 7.89 ms. Allocated memory is still 218.1 MB. Free memory is still 114.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 750]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint, overapproximation of bitwiseXor at line 745, overapproximation of bitwiseAnd at line 745. Possible FailurePath: [L706] int count_int_int = 0; [L733] int i; [L734] example_user_t *user, *tmp, *users=((void *)0); [L735] i=0 [L735] EXPR \read(i) [L735] COND TRUE i<10 [L736] user = (example_user_t*)malloc(sizeof(example_user_t)) [L737] COND FALSE !(user == ((void *)0)) [L740] EXPR \read(i) [L740] user->id = i [L741] EXPR \read(i) [L741] EXPR \read(i) [L741] user->cookie = i*i [L742] unsigned _ha_hashv; [L742] unsigned _hj_i,_hj_j,_hj_k; [L742] unsigned const char *_hj_key=(unsigned const char*)(&((user)->id)); [L742] _ha_hashv = 0xfeedbeefu [L742] EXPR _hj_j = 0x9e3779b9u [L742] _hj_i = _hj_j = 0x9e3779b9u [L742] _hj_k = (unsigned)(sizeof(int)) [L742] COND FALSE !(_hj_k >= 12U) [L742] _ha_hashv += (unsigned)(sizeof(int)) [L742] case 11: [L742] case 10: [L742] case 9: [L742] case 8: [L742] case 7: [L742] case 6: [L742] case 5: [L742] case 4: [L742] EXPR _hj_key[3] [L742] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L742] case 3: [L742] EXPR _hj_key[2] [L742] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L742] case 2: [L742] EXPR _hj_key[1] [L742] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L742] case 1: [L742] EXPR _hj_key[0] [L742] _hj_i += _hj_key[0] [L742] _hj_i -= _hj_j [L742] _hj_i -= _ha_hashv [L742] _hj_i ^= ( _ha_hashv >> 13 ) [L742] _hj_j -= _ha_hashv [L742] _hj_j -= _hj_i [L742] _hj_j ^= ( _hj_i << 8 ) [L742] _ha_hashv -= _hj_i [L742] _ha_hashv -= _hj_j [L742] _ha_hashv ^= ( _hj_j >> 13 ) [L742] _hj_i -= _hj_j [L742] _hj_i -= _ha_hashv [L742] _hj_i ^= ( _ha_hashv >> 12 ) [L742] _hj_j -= _ha_hashv [L742] _hj_j -= _hj_i [L742] _hj_j ^= ( _hj_i << 16 ) [L742] _ha_hashv -= _hj_i [L742] _ha_hashv -= _hj_j [L742] _ha_hashv ^= ( _hj_j >> 5 ) [L742] _hj_i -= _hj_j [L742] _hj_i -= _ha_hashv [L742] _hj_i ^= ( _ha_hashv >> 3 ) [L742] _hj_j -= _ha_hashv [L742] _hj_j -= _hj_i [L742] _hj_j ^= ( _hj_i << 10 ) [L742] _ha_hashv -= _hj_i [L742] _ha_hashv -= _hj_j [L742] _ha_hashv ^= ( _hj_j >> 15 ) [L742] (user)->hh.hashv = (_ha_hashv) [L742] (user)->hh.key = (char*) (&((user)->id)) [L742] (user)->hh.keylen = (unsigned) (sizeof(int)) [L742] COND TRUE !(users) [L742] (user)->hh.next = ((void *)0) [L742] (user)->hh.prev = ((void *)0) [L742] (user)->hh.tbl = (UT_hash_table*)malloc(sizeof(UT_hash_table)) [L742] EXPR (user)->hh.tbl [L742] COND FALSE !(!(user)->hh.tbl) [L742] (user)->hh.tbl [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->tail = &((user)->hh) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->num_buckets = 32U [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->log2_num_buckets = 5U [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->hho = (char*)(&(user)->hh) - (char*)(user) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->buckets = (UT_hash_bucket*)malloc(32U * sizeof(struct UT_hash_bucket)) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->signature = 0xa0111fe1u [L742] EXPR (user)->hh.tbl [L742] EXPR (user)->hh.tbl->buckets [L742] COND FALSE !(!(user)->hh.tbl->buckets) [L742] EXPR (user)->hh.tbl [L742] (user)->hh.tbl->buckets [L742] (users) = (user) [L742] unsigned _ha_bkt; [L742] EXPR (users)->hh.tbl [L742] EXPR (users)->hh.tbl->num_items [L742] (users)->hh.tbl->num_items++ [L742] EXPR (users)->hh.tbl [L742] EXPR (users)->hh.tbl->num_buckets [L742] _ha_bkt = ((_ha_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L742] EXPR (users)->hh.tbl [L742] EXPR (users)->hh.tbl->buckets [L742] UT_hash_bucket *_ha_head = &((users)->hh.tbl->buckets[_ha_bkt]); [L742] EXPR _ha_head->count [L742] _ha_head->count++ [L742] EXPR _ha_head->hh_head [L742] (&(user)->hh)->hh_next = _ha_head->hh_head [L742] (&(user)->hh)->hh_prev = ((void *)0) [L742] EXPR _ha_head->hh_head [L742] COND FALSE !(_ha_head->hh_head != ((void *)0)) [L742] _ha_head->hh_head = (&(user)->hh) [L742] EXPR _ha_head->count [L742] EXPR _ha_head->expand_mult [L742] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L742] EXPR (&(user)->hh)->tbl [L742] EXPR (&(user)->hh)->tbl->noexpand [L742] (_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand [L742] COND FALSE !((_ha_head->count >= ((_ha_head->expand_mult + 1U) * 10U)) && !(&(user)->hh)->tbl->noexpand) [L735] EXPR \read(i) [L735] i++ [L735] EXPR \read(i) [L735] COND FALSE !(i<10) [L744] i=0 [L744] EXPR \read(i) [L744] COND TRUE i<10 [L745] unsigned _hf_hashv; [L745] unsigned _hj_i,_hj_j,_hj_k; [L745] unsigned const char *_hj_key=(unsigned const char*)(&i); [L745] _hf_hashv = 0xfeedbeefu [L745] EXPR _hj_j = 0x9e3779b9u [L745] _hj_i = _hj_j = 0x9e3779b9u [L745] _hj_k = (unsigned)(sizeof(int)) [L745] COND FALSE !(_hj_k >= 12U) [L745] _hf_hashv += (unsigned)(sizeof(int)) [L745] case 11: [L745] case 10: [L745] case 9: [L745] case 8: [L745] case 7: [L745] case 6: [L745] case 5: [L745] case 4: [L745] EXPR _hj_key[3] [L745] _hj_i += ( (unsigned)_hj_key[3] << 24 ) [L745] case 3: [L745] EXPR _hj_key[2] [L745] _hj_i += ( (unsigned)_hj_key[2] << 16 ) [L745] case 2: [L745] EXPR _hj_key[1] [L745] _hj_i += ( (unsigned)_hj_key[1] << 8 ) [L745] case 1: [L745] EXPR _hj_key[0] [L745] _hj_i += _hj_key[0] [L745] _hj_i -= _hj_j [L745] _hj_i -= _hf_hashv [L745] _hj_i ^= ( _hf_hashv >> 13 ) [L745] _hj_j -= _hf_hashv [L745] _hj_j -= _hj_i [L745] _hj_j ^= ( _hj_i << 8 ) [L745] _hf_hashv -= _hj_i [L745] _hf_hashv -= _hj_j [L745] _hf_hashv ^= ( _hj_j >> 13 ) [L745] _hj_i -= _hj_j [L745] _hj_i -= _hf_hashv [L745] _hj_i ^= ( _hf_hashv >> 12 ) [L745] _hj_j -= _hf_hashv [L745] _hj_j -= _hj_i [L745] _hj_j ^= ( _hj_i << 16 ) [L745] _hf_hashv -= _hj_i [L745] _hf_hashv -= _hj_j [L745] _hf_hashv ^= ( _hj_j >> 5 ) [L745] _hj_i -= _hj_j [L745] _hj_i -= _hf_hashv [L745] _hj_i ^= ( _hf_hashv >> 3 ) [L745] _hj_j -= _hf_hashv [L745] _hj_j -= _hj_i [L745] _hj_j ^= ( _hj_i << 10 ) [L745] _hf_hashv -= _hj_i [L745] _hf_hashv -= _hj_j [L745] _hf_hashv ^= ( _hj_j >> 15 ) [L745] (tmp) = ((void *)0) [L745] COND TRUE \read(*users) [L745] unsigned _hf_bkt; [L745] EXPR (users)->hh.tbl [L745] EXPR (users)->hh.tbl->num_buckets [L745] _hf_bkt = ((_hf_hashv) & (((users)->hh.tbl->num_buckets) - 1U)) [L745] EXPR (users)->hh.tbl [L745] EXPR (users)->hh.tbl->buckets [L745] EXPR ((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head [L745] COND FALSE !(((users)->hh.tbl->buckets[ _hf_bkt ]).hh_head != ((void *)0)) [L745] (tmp) = ((void *)0) [L745] COND FALSE !((tmp) != ((void *)0)) [L746] COND FALSE !(tmp != ((void *)0)) [L750] reach_error() - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 703]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 202 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 19.6s, OverallIterations: 10, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 2263 SDtfs, 1332 SDslu, 2278 SDs, 0 SdLazy, 569 SolverSat, 120 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 577 GetRequests, 559 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=410occurred in iteration=9, InterpolantAutomatonStates: 32, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 313 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 12.9s InterpolantComputationTime, 703 NumberOfCodeBlocks, 703 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 584 ConstructedInterpolants, 0 QuantifiedInterpolants, 1117 SizeOfPredicates, 6 NumberOfNonLiveVariables, 2355 ConjunctsInSsa, 76 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 14/14 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-07 08:06:57,085 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY --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 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:06:59,847 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:06:59,849 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:06:59,881 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:06:59,881 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:06:59,883 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:06:59,885 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:06:59,887 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:06:59,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:06:59,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:06:59,893 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:06:59,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:06:59,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:06:59,897 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:06:59,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:06:59,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:06:59,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:06:59,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:06:59,906 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:06:59,909 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:06:59,911 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:06:59,913 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:06:59,915 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:06:59,916 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:06:59,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:06:59,921 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:06:59,922 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:06:59,923 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:06:59,924 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:06:59,925 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:06:59,926 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:06:59,927 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:06:59,928 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:06:59,929 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:06:59,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:06:59,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:06:59,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:06:59,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:06:59,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:06:59,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:06:59,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:06:59,938 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-11-07 08:06:59,967 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:06:59,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:06:59,968 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:06:59,968 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:06:59,969 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:06:59,970 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:06:59,970 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:06:59,970 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:06:59,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:06:59,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:06:59,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:06:59,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:06:59,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:06:59,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:06:59,972 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-07 08:06:59,972 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-07 08:06:59,972 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:06:59,973 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:06:59,973 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:06:59,973 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:06:59,973 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:06:59,974 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:06:59,974 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:06:59,974 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:06:59,974 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:06:59,975 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:06:59,975 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:06:59,975 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-07 08:06:59,975 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-07 08:06:59,975 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:06:59,976 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:06:59,976 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:06:59,976 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:06:59,976 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 08:06:59,977 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2f1aaf5276e100f83cf10565e66c3b5d8c0baa3bbd1a1424b76fbee71241f226 [2021-11-07 08:07:00,421 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:07:00,459 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:07:00,464 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:07:00,468 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:07:00,469 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:07:00,470 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 08:07:00,560 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/1bad3188b/36b0a83ed0e2488aa98944910d8b7c1d/FLAGf4c01359c [2021-11-07 08:07:01,307 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:07:01,308 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i [2021-11-07 08:07:01,328 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/1bad3188b/36b0a83ed0e2488aa98944910d8b7c1d/FLAGf4c01359c [2021-11-07 08:07:01,497 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/data/1bad3188b/36b0a83ed0e2488aa98944910d8b7c1d [2021-11-07 08:07:01,499 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:07:01,501 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:07:01,503 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:07:01,503 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:07:01,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:07:01,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:07:01" (1/1) ... [2021-11-07 08:07:01,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532d5295 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:01, skipping insertion in model container [2021-11-07 08:07:01,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:07:01" (1/1) ... [2021-11-07 08:07:01,529 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:07:01,585 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:07:02,198 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 08:07:02,439 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 08:07:02,458 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:07:02,482 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:07:02,543 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[33021,33034] [2021-11-07 08:07:02,667 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test3-1.i[44590,44603] [2021-11-07 08:07:02,683 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:07:02,770 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:07:02,771 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02 WrapperNode [2021-11-07 08:07:02,771 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:07:02,772 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:07:02,773 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:07:02,773 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:07:02,782 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:02,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:02,964 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:07:02,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:07:02,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:07:02,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:07:02,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:02,977 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:02,988 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:02,989 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:03,053 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:03,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:03,080 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:03,094 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:07:03,111 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:07:03,112 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:07:03,112 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:07:03,113 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (1/1) ... [2021-11-07 08:07:03,134 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:07:03,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:07:03,163 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:07:03,182 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:07:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-07 08:07:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-07 08:07:03,221 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-07 08:07:03,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-07 08:07:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:07:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-07 08:07:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-07 08:07:03,224 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:07:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-07 08:07:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-07 08:07:03,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:07:03,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:07:08,936 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:07:08,937 INFO L299 CfgBuilder]: Removed 85 assume(true) statements. [2021-11-07 08:07:08,940 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:07:08 BoogieIcfgContainer [2021-11-07 08:07:08,940 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:07:08,942 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:07:08,942 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:07:08,946 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:07:08,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:07:01" (1/3) ... [2021-11-07 08:07:08,947 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65147ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:07:08, skipping insertion in model container [2021-11-07 08:07:08,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:07:02" (2/3) ... [2021-11-07 08:07:08,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65147ad8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:07:08, skipping insertion in model container [2021-11-07 08:07:08,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:07:08" (3/3) ... [2021-11-07 08:07:08,950 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test3-1.i [2021-11-07 08:07:08,956 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:07:08,956 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-07 08:07:09,011 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:07:09,017 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:07:09,018 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-07 08:07:09,041 INFO L276 IsEmpty]: Start isEmpty. Operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-07 08:07:09,047 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:09,048 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:09,049 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:09,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:09,055 INFO L85 PathProgramCache]: Analyzing trace with hash 239232295, now seen corresponding path program 1 times [2021-11-07 08:07:09,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:09,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [623179820] [2021-11-07 08:07:09,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:09,070 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:09,070 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:09,074 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:09,111 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-07 08:07:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:09,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-07 08:07:09,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:09,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:09,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:09,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:09,386 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:09,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [623179820] [2021-11-07 08:07:09,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [623179820] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:09,388 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:09,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-07 08:07:09,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252206483] [2021-11-07 08:07:09,396 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:07:09,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:09,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:07:09,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:07:09,415 INFO L87 Difference]: Start difference. First operand has 202 states, 195 states have (on average 1.7230769230769232) internal successors, (336), 201 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:09,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:09,484 INFO L93 Difference]: Finished difference Result 402 states and 670 transitions. [2021-11-07 08:07:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:07:09,486 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-07 08:07:09,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:09,506 INFO L225 Difference]: With dead ends: 402 [2021-11-07 08:07:09,507 INFO L226 Difference]: Without dead ends: 198 [2021-11-07 08:07:09,511 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:07:09,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-11-07 08:07:09,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-11-07 08:07:09,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 192 states have (on average 1.3489583333333333) internal successors, (259), 197 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:09,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2021-11-07 08:07:09,611 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 9 [2021-11-07 08:07:09,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:09,612 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2021-11-07 08:07:09,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:09,612 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2021-11-07 08:07:09,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-07 08:07:09,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:09,614 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:09,631 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:09,826 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:09,827 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:09,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:09,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1042319138, now seen corresponding path program 1 times [2021-11-07 08:07:09,829 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:09,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1096569068] [2021-11-07 08:07:09,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:09,830 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:09,830 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:09,831 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:09,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-07 08:07:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:09,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:07:09,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:10,025 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:07:10,064 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 08:07:10,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:10,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:10,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:10,210 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:10,211 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1096569068] [2021-11-07 08:07:10,211 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1096569068] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:10,211 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:10,211 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 08:07:10,211 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138379659] [2021-11-07 08:07:10,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:07:10,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:10,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:07:10,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:07:10,214 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:14,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:14,920 INFO L93 Difference]: Finished difference Result 552 states and 722 transitions. [2021-11-07 08:07:14,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:07:14,921 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-11-07 08:07:14,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:14,925 INFO L225 Difference]: With dead ends: 552 [2021-11-07 08:07:14,926 INFO L226 Difference]: Without dead ends: 444 [2021-11-07 08:07:14,927 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:07:14,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2021-11-07 08:07:14,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 200. [2021-11-07 08:07:14,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 194 states have (on average 1.3453608247422681) internal successors, (261), 199 states have internal predecessors, (261), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:14,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 261 transitions. [2021-11-07 08:07:14,945 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 261 transitions. Word has length 12 [2021-11-07 08:07:14,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:14,945 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 261 transitions. [2021-11-07 08:07:14,945 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:14,946 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 261 transitions. [2021-11-07 08:07:14,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:07:14,962 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:14,963 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:14,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:15,165 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:15,165 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:15,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:15,166 INFO L85 PathProgramCache]: Analyzing trace with hash 168111628, now seen corresponding path program 1 times [2021-11-07 08:07:15,167 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:15,168 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34470390] [2021-11-07 08:07:15,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:15,168 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:15,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:15,179 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:15,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-07 08:07:15,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:15,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:07:15,446 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:15,658 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:15,658 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:15,882 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:15,883 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [34470390] [2021-11-07 08:07:15,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [34470390] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:15,883 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:15,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:07:15,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140850200] [2021-11-07 08:07:15,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:07:15,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:15,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:07:15,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:07:15,885 INFO L87 Difference]: Start difference. First operand 200 states and 261 transitions. Second operand has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:16,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:16,061 INFO L93 Difference]: Finished difference Result 405 states and 530 transitions. [2021-11-07 08:07:16,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:07:16,062 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:07:16,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:16,064 INFO L225 Difference]: With dead ends: 405 [2021-11-07 08:07:16,065 INFO L226 Difference]: Without dead ends: 209 [2021-11-07 08:07:16,067 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:07:16,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2021-11-07 08:07:16,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 203. [2021-11-07 08:07:16,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 197 states have (on average 1.299492385786802) internal successors, (256), 202 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:16,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 256 transitions. [2021-11-07 08:07:16,081 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 256 transitions. Word has length 64 [2021-11-07 08:07:16,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:16,082 INFO L470 AbstractCegarLoop]: Abstraction has 203 states and 256 transitions. [2021-11-07 08:07:16,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.4) internal successors, (67), 5 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 256 transitions. [2021-11-07 08:07:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-07 08:07:16,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:16,086 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:16,106 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:16,306 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:16,307 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:16,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:16,308 INFO L85 PathProgramCache]: Analyzing trace with hash -1012352744, now seen corresponding path program 1 times [2021-11-07 08:07:16,309 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:16,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [407108720] [2021-11-07 08:07:16,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:16,318 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:16,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:16,319 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:16,335 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-07 08:07:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:16,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:07:16,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:17,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:17,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:17,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:17,931 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:17,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [407108720] [2021-11-07 08:07:17,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [407108720] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:17,932 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:17,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-07 08:07:17,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829161302] [2021-11-07 08:07:17,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:07:17,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:17,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:07:17,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:07:17,935 INFO L87 Difference]: Start difference. First operand 203 states and 256 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:19,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:19,466 INFO L93 Difference]: Finished difference Result 533 states and 671 transitions. [2021-11-07 08:07:19,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:07:19,466 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2021-11-07 08:07:19,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:19,469 INFO L225 Difference]: With dead ends: 533 [2021-11-07 08:07:19,470 INFO L226 Difference]: Without dead ends: 334 [2021-11-07 08:07:19,471 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:07:19,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2021-11-07 08:07:19,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 306. [2021-11-07 08:07:19,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 300 states have (on average 1.2833333333333334) internal successors, (385), 305 states have internal predecessors, (385), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:19,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 385 transitions. [2021-11-07 08:07:19,488 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 385 transitions. Word has length 64 [2021-11-07 08:07:19,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:19,489 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 385 transitions. [2021-11-07 08:07:19,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:19,490 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 385 transitions. [2021-11-07 08:07:19,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-07 08:07:19,493 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:19,494 INFO L513 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:19,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:19,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:19,707 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:19,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:19,708 INFO L85 PathProgramCache]: Analyzing trace with hash -147792665, now seen corresponding path program 1 times [2021-11-07 08:07:19,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:19,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2086200666] [2021-11-07 08:07:19,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:19,710 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:19,710 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:19,723 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:19,725 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-07 08:07:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:20,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:07:20,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:20,383 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:20,383 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:07:20,592 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:20,593 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2086200666] [2021-11-07 08:07:20,593 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2086200666] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:20,593 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:20,593 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-07 08:07:20,594 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599250432] [2021-11-07 08:07:20,594 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:07:20,595 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:20,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:07:20,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:07:20,596 INFO L87 Difference]: Start difference. First operand 306 states and 385 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:20,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:20,718 INFO L93 Difference]: Finished difference Result 570 states and 727 transitions. [2021-11-07 08:07:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:07:20,719 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 71 [2021-11-07 08:07:20,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:20,722 INFO L225 Difference]: With dead ends: 570 [2021-11-07 08:07:20,722 INFO L226 Difference]: Without dead ends: 309 [2021-11-07 08:07:20,723 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 138 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:07:20,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-07 08:07:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 309. [2021-11-07 08:07:20,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 303 states have (on average 1.2805280528052805) internal successors, (388), 308 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:20,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 388 transitions. [2021-11-07 08:07:20,739 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 388 transitions. Word has length 71 [2021-11-07 08:07:20,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:20,740 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 388 transitions. [2021-11-07 08:07:20,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:20,741 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 388 transitions. [2021-11-07 08:07:20,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 08:07:20,744 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:20,744 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:20,771 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:20,957 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:20,958 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:20,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:20,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1065048653, now seen corresponding path program 1 times [2021-11-07 08:07:20,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:20,960 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1689594608] [2021-11-07 08:07:20,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:20,960 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:20,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:20,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:20,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-07 08:07:21,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:21,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:07:21,450 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:21,772 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:07:21,773 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:22,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:07:22,105 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:22,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1689594608] [2021-11-07 08:07:22,106 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1689594608] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:07:22,106 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:07:22,106 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 08:07:22,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411318498] [2021-11-07 08:07:22,107 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:07:22,107 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:22,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:07:22,108 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:07:22,108 INFO L87 Difference]: Start difference. First operand 309 states and 388 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:22,599 INFO L93 Difference]: Finished difference Result 579 states and 739 transitions. [2021-11-07 08:07:22,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:07:22,600 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 08:07:22,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:22,603 INFO L225 Difference]: With dead ends: 579 [2021-11-07 08:07:22,609 INFO L226 Difference]: Without dead ends: 315 [2021-11-07 08:07:22,610 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2021-11-07 08:07:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-11-07 08:07:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 315. [2021-11-07 08:07:22,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 309 states have (on average 1.2750809061488673) internal successors, (394), 314 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 394 transitions. [2021-11-07 08:07:22,626 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 394 transitions. Word has length 74 [2021-11-07 08:07:22,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:22,627 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 394 transitions. [2021-11-07 08:07:22,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 8 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:22,627 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 394 transitions. [2021-11-07 08:07:22,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 08:07:22,629 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:22,629 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:22,652 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:22,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:22,843 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:22,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:22,844 INFO L85 PathProgramCache]: Analyzing trace with hash -1820271245, now seen corresponding path program 2 times [2021-11-07 08:07:22,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:22,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [36932756] [2021-11-07 08:07:22,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:07:22,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:22,846 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:22,847 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:22,848 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-07 08:07:23,151 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:07:23,151 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:07:23,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:07:23,158 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:23,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-11-07 08:07:23,388 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-07 08:07:23,418 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 08:07:23,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:23,625 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 08:07:23,625 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:23,625 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [36932756] [2021-11-07 08:07:23,625 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [36932756] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:23,625 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:23,625 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-07 08:07:23,626 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273452007] [2021-11-07 08:07:23,626 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:07:23,626 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:23,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:07:23,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:07:23,627 INFO L87 Difference]: Start difference. First operand 315 states and 394 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:29,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:29,702 INFO L93 Difference]: Finished difference Result 490 states and 625 transitions. [2021-11-07 08:07:29,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:07:29,703 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 08:07:29,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:29,707 INFO L225 Difference]: With dead ends: 490 [2021-11-07 08:07:29,707 INFO L226 Difference]: Without dead ends: 465 [2021-11-07 08:07:29,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:07:29,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465 states. [2021-11-07 08:07:29,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465 to 386. [2021-11-07 08:07:29,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 380 states have (on average 1.2894736842105263) internal successors, (490), 385 states have internal predecessors, (490), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 490 transitions. [2021-11-07 08:07:29,727 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 490 transitions. Word has length 80 [2021-11-07 08:07:29,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:29,727 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 490 transitions. [2021-11-07 08:07:29,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:29,728 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 490 transitions. [2021-11-07 08:07:29,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-07 08:07:29,729 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:29,730 INFO L513 BasicCegarLoop]: trace histogram [6, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:29,747 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:29,944 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:29,944 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:29,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:29,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1224331210, now seen corresponding path program 1 times [2021-11-07 08:07:29,946 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:29,946 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1451673736] [2021-11-07 08:07:29,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:29,947 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:29,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:29,948 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:29,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-07 08:07:30,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:30,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-07 08:07:30,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:31,132 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:07:31,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:31,875 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:07:31,876 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:31,876 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1451673736] [2021-11-07 08:07:31,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1451673736] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:07:31,876 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:07:31,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2021-11-07 08:07:31,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446140443] [2021-11-07 08:07:31,877 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-07 08:07:31,877 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:31,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-07 08:07:31,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2021-11-07 08:07:31,879 INFO L87 Difference]: Start difference. First operand 386 states and 490 transitions. Second operand has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:34,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:34,185 INFO L93 Difference]: Finished difference Result 739 states and 955 transitions. [2021-11-07 08:07:34,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-07 08:07:34,186 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 112 [2021-11-07 08:07:34,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:34,189 INFO L225 Difference]: With dead ends: 739 [2021-11-07 08:07:34,189 INFO L226 Difference]: Without dead ends: 398 [2021-11-07 08:07:34,191 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=174, Invalid=288, Unknown=0, NotChecked=0, Total=462 [2021-11-07 08:07:34,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2021-11-07 08:07:34,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 398. [2021-11-07 08:07:34,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 392 states have (on average 1.280612244897959) internal successors, (502), 397 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:34,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 502 transitions. [2021-11-07 08:07:34,210 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 502 transitions. Word has length 112 [2021-11-07 08:07:34,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:34,210 INFO L470 AbstractCegarLoop]: Abstraction has 398 states and 502 transitions. [2021-11-07 08:07:34,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.375) internal successors, (118), 16 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 502 transitions. [2021-11-07 08:07:34,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 08:07:34,212 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:34,213 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:34,238 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:34,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:34,430 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:34,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:34,431 INFO L85 PathProgramCache]: Analyzing trace with hash -2016870474, now seen corresponding path program 2 times [2021-11-07 08:07:34,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:34,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [974413771] [2021-11-07 08:07:34,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:07:34,432 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:34,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:34,432 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:34,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-07 08:07:34,837 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:07:34,838 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:07:34,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:07:34,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 08:07:35,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:35,459 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-11-07 08:07:35,459 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:35,459 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [974413771] [2021-11-07 08:07:35,459 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [974413771] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:35,460 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:35,460 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-07 08:07:35,460 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817943501] [2021-11-07 08:07:35,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:07:35,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:35,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:07:35,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:07:35,462 INFO L87 Difference]: Start difference. First operand 398 states and 502 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:35,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:35,630 INFO L93 Difference]: Finished difference Result 645 states and 838 transitions. [2021-11-07 08:07:35,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-07 08:07:35,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-07 08:07:35,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:35,635 INFO L225 Difference]: With dead ends: 645 [2021-11-07 08:07:35,635 INFO L226 Difference]: Without dead ends: 410 [2021-11-07 08:07:35,636 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 247 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:07:35,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2021-11-07 08:07:35,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 407. [2021-11-07 08:07:35,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 401 states have (on average 1.2144638403990025) internal successors, (487), 406 states have internal predecessors, (487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:35,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 487 transitions. [2021-11-07 08:07:35,657 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 487 transitions. Word has length 124 [2021-11-07 08:07:35,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:35,657 INFO L470 AbstractCegarLoop]: Abstraction has 407 states and 487 transitions. [2021-11-07 08:07:35,658 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 5 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:35,658 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 487 transitions. [2021-11-07 08:07:35,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 08:07:35,659 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:35,660 INFO L513 BasicCegarLoop]: trace histogram [14, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:35,676 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:35,875 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:35,875 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:35,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:35,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1333208362, now seen corresponding path program 1 times [2021-11-07 08:07:35,876 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:35,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [779901121] [2021-11-07 08:07:35,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:35,877 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:35,877 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:35,878 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:35,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-07 08:07:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:36,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 355 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-07 08:07:36,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:37,329 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 08:07:37,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:39,076 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 2 proven. 105 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 08:07:39,077 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:39,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [779901121] [2021-11-07 08:07:39,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [779901121] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:07:39,077 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:07:39,078 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 32 [2021-11-07 08:07:39,078 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461238773] [2021-11-07 08:07:39,079 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-11-07 08:07:39,079 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:39,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-11-07 08:07:39,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=286, Invalid=706, Unknown=0, NotChecked=0, Total=992 [2021-11-07 08:07:39,083 INFO L87 Difference]: Start difference. First operand 407 states and 487 transitions. Second operand has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:52,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:52,275 INFO L93 Difference]: Finished difference Result 793 states and 973 transitions. [2021-11-07 08:07:52,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-11-07 08:07:52,276 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 124 [2021-11-07 08:07:52,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:52,279 INFO L225 Difference]: With dead ends: 793 [2021-11-07 08:07:52,279 INFO L226 Difference]: Without dead ends: 431 [2021-11-07 08:07:52,281 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=734, Invalid=1336, Unknown=0, NotChecked=0, Total=2070 [2021-11-07 08:07:52,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-07 08:07:52,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 431. [2021-11-07 08:07:52,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.2023529411764706) internal successors, (511), 430 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:52,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 511 transitions. [2021-11-07 08:07:52,302 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 511 transitions. Word has length 124 [2021-11-07 08:07:52,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:52,303 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 511 transitions. [2021-11-07 08:07:52,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 4.1875) internal successors, (134), 32 states have internal predecessors, (134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:52,303 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 511 transitions. [2021-11-07 08:07:52,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 08:07:52,305 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:52,305 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:52,332 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:52,519 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:52,519 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:52,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:52,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2039593942, now seen corresponding path program 2 times [2021-11-07 08:07:52,520 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:52,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [24167089] [2021-11-07 08:07:52,521 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:07:52,521 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:52,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:52,522 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:52,523 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-07 08:07:53,002 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-11-07 08:07:53,002 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:07:53,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-07 08:07:53,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:53,343 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-07 08:07:53,344 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:07:53,716 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 587 trivial. 0 not checked. [2021-11-07 08:07:53,717 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:07:53,717 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [24167089] [2021-11-07 08:07:53,717 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [24167089] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:07:53,717 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:07:53,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 5] imperfect sequences [] total 5 [2021-11-07 08:07:53,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283799255] [2021-11-07 08:07:53,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 08:07:53,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:07:53,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 08:07:53,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:07:53,720 INFO L87 Difference]: Start difference. First operand 431 states and 511 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:53,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:07:53,836 INFO L93 Difference]: Finished difference Result 653 states and 785 transitions. [2021-11-07 08:07:53,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:07:53,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-07 08:07:53,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:07:53,841 INFO L225 Difference]: With dead ends: 653 [2021-11-07 08:07:53,841 INFO L226 Difference]: Without dead ends: 434 [2021-11-07 08:07:53,842 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:07:53,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2021-11-07 08:07:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 431. [2021-11-07 08:07:53,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 431 states, 425 states have (on average 1.1811764705882353) internal successors, (502), 430 states have internal predecessors, (502), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:53,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 502 transitions. [2021-11-07 08:07:53,867 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 502 transitions. Word has length 148 [2021-11-07 08:07:53,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:07:53,868 INFO L470 AbstractCegarLoop]: Abstraction has 431 states and 502 transitions. [2021-11-07 08:07:53,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 5 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:07:53,869 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 502 transitions. [2021-11-07 08:07:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-07 08:07:53,871 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:07:53,871 INFO L513 BasicCegarLoop]: trace histogram [30, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:07:53,893 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-11-07 08:07:54,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:07:54,086 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:07:54,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:07:54,086 INFO L85 PathProgramCache]: Analyzing trace with hash 1997207916, now seen corresponding path program 1 times [2021-11-07 08:07:54,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:07:54,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1739823436] [2021-11-07 08:07:54,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:07:54,087 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:07:54,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:07:54,088 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:07:54,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-07 08:07:54,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:07:54,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 476 conjuncts, 33 conjunts are in the unsatisfiable core [2021-11-07 08:07:54,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:07:56,905 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 08:07:56,905 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:08:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 587 backedges. 2 proven. 465 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2021-11-07 08:08:02,014 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:08:02,014 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1739823436] [2021-11-07 08:08:02,014 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1739823436] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:08:02,014 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:08:02,014 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 64 [2021-11-07 08:08:02,014 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170635853] [2021-11-07 08:08:02,015 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2021-11-07 08:08:02,015 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:08:02,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2021-11-07 08:08:02,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=933, Invalid=3099, Unknown=0, NotChecked=0, Total=4032 [2021-11-07 08:08:02,019 INFO L87 Difference]: Start difference. First operand 431 states and 502 transitions. Second operand has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:39,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:09:39,663 INFO L93 Difference]: Finished difference Result 847 states and 1015 transitions. [2021-11-07 08:09:39,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-11-07 08:09:39,664 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 148 [2021-11-07 08:09:39,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:09:39,667 INFO L225 Difference]: With dead ends: 847 [2021-11-07 08:09:39,667 INFO L226 Difference]: Without dead ends: 461 [2021-11-07 08:09:39,671 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 791 ImplicationChecksByTransitivity, 40.2s TimeCoverageRelationStatistics Valid=2700, Invalid=6042, Unknown=0, NotChecked=0, Total=8742 [2021-11-07 08:09:39,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 461 states. [2021-11-07 08:09:39,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 461 to 461. [2021-11-07 08:09:39,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 455 states have (on average 1.1692307692307693) internal successors, (532), 460 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:39,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 532 transitions. [2021-11-07 08:09:39,705 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 532 transitions. Word has length 148 [2021-11-07 08:09:39,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:09:39,705 INFO L470 AbstractCegarLoop]: Abstraction has 461 states and 532 transitions. [2021-11-07 08:09:39,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 2.59375) internal successors, (166), 64 states have internal predecessors, (166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:09:39,706 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 532 transitions. [2021-11-07 08:09:39,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 08:09:39,708 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:09:39,708 INFO L513 BasicCegarLoop]: trace histogram [44, 31, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:09:39,737 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-07 08:09:39,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:09:39,930 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:09:39,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:09:39,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1100843980, now seen corresponding path program 2 times [2021-11-07 08:09:39,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:09:39,932 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [110766814] [2021-11-07 08:09:39,932 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:09:39,932 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:09:39,933 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:09:39,934 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:09:39,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-07 08:09:41,330 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:09:41,330 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:09:41,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 626 conjuncts, 34 conjunts are in the unsatisfiable core [2021-11-07 08:09:41,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:09:43,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:09:43,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:09:48,089 INFO L134 CoverageAnalysis]: Checked inductivity of 1488 backedges. 2 proven. 496 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:09:48,089 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:09:48,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [110766814] [2021-11-07 08:09:48,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [110766814] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:09:48,091 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:09:48,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34] total 66 [2021-11-07 08:09:48,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34237165] [2021-11-07 08:09:48,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2021-11-07 08:09:48,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:09:48,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2021-11-07 08:09:48,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1153, Invalid=3137, Unknown=0, NotChecked=0, Total=4290 [2021-11-07 08:09:48,095 INFO L87 Difference]: Start difference. First operand 461 states and 532 transitions. Second operand has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:36,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:36,077 INFO L93 Difference]: Finished difference Result 910 states and 1081 transitions. [2021-11-07 08:11:36,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2021-11-07 08:11:36,078 INFO L78 Accepts]: Start accepts. Automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-07 08:11:36,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:36,081 INFO L225 Difference]: With dead ends: 910 [2021-11-07 08:11:36,081 INFO L226 Difference]: Without dead ends: 494 [2021-11-07 08:11:36,085 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 416 GetRequests, 321 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 42.4s TimeCoverageRelationStatistics Valid=3199, Invalid=6113, Unknown=0, NotChecked=0, Total=9312 [2021-11-07 08:11:36,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-07 08:11:36,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 494. [2021-11-07 08:11:36,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 488 states have (on average 1.1577868852459017) internal successors, (565), 493 states have internal predecessors, (565), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:36,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 565 transitions. [2021-11-07 08:11:36,127 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 565 transitions. Word has length 178 [2021-11-07 08:11:36,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:36,127 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 565 transitions. [2021-11-07 08:11:36,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 2.5454545454545454) internal successors, (168), 66 states have internal predecessors, (168), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:36,128 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 565 transitions. [2021-11-07 08:11:36,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2021-11-07 08:11:36,131 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:36,131 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:36,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-07 08:11:36,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:11:36,356 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:11:36,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:36,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1145284768, now seen corresponding path program 3 times [2021-11-07 08:11:36,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:11:36,358 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763811027] [2021-11-07 08:11:36,358 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:11:36,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:11:36,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:11:36,358 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:11:36,360 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-07 08:11:37,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 08:11:37,284 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:11:37,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-07 08:11:37,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:11:38,264 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-07 08:11:38,264 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:11:39,124 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3070 trivial. 0 not checked. [2021-11-07 08:11:39,124 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:11:39,125 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763811027] [2021-11-07 08:11:39,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1763811027] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 08:11:39,125 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:11:39,125 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-07 08:11:39,125 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307952613] [2021-11-07 08:11:39,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:11:39,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:11:39,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:11:39,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:11:39,127 INFO L87 Difference]: Start difference. First operand 494 states and 565 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:42,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:11:42,908 INFO L93 Difference]: Finished difference Result 1070 states and 1232 transitions. [2021-11-07 08:11:42,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:11:42,909 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 211 [2021-11-07 08:11:42,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:11:42,912 INFO L225 Difference]: With dead ends: 1070 [2021-11-07 08:11:42,913 INFO L226 Difference]: Without dead ends: 621 [2021-11-07 08:11:42,914 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 422 GetRequests, 419 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-07 08:11:42,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2021-11-07 08:11:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 569. [2021-11-07 08:11:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 563 states have (on average 1.1580817051509769) internal successors, (652), 568 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:42,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 652 transitions. [2021-11-07 08:11:42,954 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 652 transitions. Word has length 211 [2021-11-07 08:11:42,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:11:42,955 INFO L470 AbstractCegarLoop]: Abstraction has 569 states and 652 transitions. [2021-11-07 08:11:42,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:11:42,955 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 652 transitions. [2021-11-07 08:11:42,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2021-11-07 08:11:42,958 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:11:42,959 INFO L513 BasicCegarLoop]: trace histogram [64, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:11:42,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-07 08:11:43,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:11:43,177 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:11:43,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:11:43,177 INFO L85 PathProgramCache]: Analyzing trace with hash 670931834, now seen corresponding path program 1 times [2021-11-07 08:11:43,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:11:43,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2002187116] [2021-11-07 08:11:43,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:11:43,179 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:11:43,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:11:43,179 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:11:43,180 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-07 08:11:44,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:11:45,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 806 conjuncts, 67 conjunts are in the unsatisfiable core [2021-11-07 08:11:45,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:11:51,954 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:11:51,955 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 08:12:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3072 backedges. 2 proven. 2080 refuted. 0 times theorem prover too weak. 990 trivial. 0 not checked. [2021-11-07 08:12:10,961 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-07 08:12:10,961 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2002187116] [2021-11-07 08:12:10,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2002187116] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-07 08:12:10,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:12:10,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [67, 67] total 132 [2021-11-07 08:12:10,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431170468] [2021-11-07 08:12:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 132 states [2021-11-07 08:12:10,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-07 08:12:10,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 132 interpolants. [2021-11-07 08:12:10,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4486, Invalid=12806, Unknown=0, NotChecked=0, Total=17292 [2021-11-07 08:12:10,970 INFO L87 Difference]: Start difference. First operand 569 states and 652 transitions. Second operand has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:17:31,444 WARN L207 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 196 [2021-11-07 08:17:43,884 WARN L207 SmtUtils]: Spent 9.29 s on a formula simplification that was a NOOP. DAG size: 193 [2021-11-07 08:17:54,695 WARN L207 SmtUtils]: Spent 7.77 s on a formula simplification that was a NOOP. DAG size: 190 [2021-11-07 08:18:05,843 WARN L207 SmtUtils]: Spent 8.21 s on a formula simplification that was a NOOP. DAG size: 187 [2021-11-07 08:18:16,879 WARN L207 SmtUtils]: Spent 7.80 s on a formula simplification that was a NOOP. DAG size: 184 [2021-11-07 08:18:27,298 WARN L207 SmtUtils]: Spent 7.86 s on a formula simplification that was a NOOP. DAG size: 181 [2021-11-07 08:18:37,758 WARN L207 SmtUtils]: Spent 7.72 s on a formula simplification that was a NOOP. DAG size: 178 [2021-11-07 08:18:47,547 WARN L207 SmtUtils]: Spent 6.57 s on a formula simplification that was a NOOP. DAG size: 175 [2021-11-07 08:18:55,798 WARN L207 SmtUtils]: Spent 5.37 s on a formula simplification that was a NOOP. DAG size: 172 [2021-11-07 08:19:04,705 WARN L207 SmtUtils]: Spent 6.02 s on a formula simplification that was a NOOP. DAG size: 169 [2021-11-07 08:19:13,389 WARN L207 SmtUtils]: Spent 5.96 s on a formula simplification that was a NOOP. DAG size: 166 [2021-11-07 08:19:22,378 WARN L207 SmtUtils]: Spent 5.87 s on a formula simplification that was a NOOP. DAG size: 163 [2021-11-07 08:19:38,453 WARN L207 SmtUtils]: Spent 5.82 s on a formula simplification that was a NOOP. DAG size: 157 [2021-11-07 08:19:46,699 WARN L207 SmtUtils]: Spent 5.33 s on a formula simplification that was a NOOP. DAG size: 154 [2021-11-07 08:20:25,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 08:20:25,442 INFO L93 Difference]: Finished difference Result 1045 states and 1271 transitions. [2021-11-07 08:20:25,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 132 states. [2021-11-07 08:20:25,443 INFO L78 Accepts]: Start accepts. Automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 218 [2021-11-07 08:20:25,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 08:20:25,447 INFO L225 Difference]: With dead ends: 1045 [2021-11-07 08:20:25,447 INFO L226 Difference]: Without dead ends: 635 [2021-11-07 08:20:25,466 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 541 GetRequests, 347 SyntacticMatches, 0 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1995 ImplicationChecksByTransitivity, 326.9s TimeCoverageRelationStatistics Valid=12934, Invalid=25286, Unknown=0, NotChecked=0, Total=38220 [2021-11-07 08:20:25,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 635 states. [2021-11-07 08:20:25,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 635 to 635. [2021-11-07 08:20:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 635 states, 629 states have (on average 1.1414944356120826) internal successors, (718), 634 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:25,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 718 transitions. [2021-11-07 08:20:25,536 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 718 transitions. Word has length 218 [2021-11-07 08:20:25,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 08:20:25,537 INFO L470 AbstractCegarLoop]: Abstraction has 635 states and 718 transitions. [2021-11-07 08:20:25,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 132 states, 132 states have (on average 1.8257575757575757) internal successors, (241), 132 states have internal predecessors, (241), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:20:25,537 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 718 transitions. [2021-11-07 08:20:25,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2021-11-07 08:20:25,542 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 08:20:25,542 INFO L513 BasicCegarLoop]: trace histogram [130, 44, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:20:25,575 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-07 08:20:25,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 [2021-11-07 08:20:25,755 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-07 08:20:25,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:20:25,756 INFO L85 PathProgramCache]: Analyzing trace with hash 249759226, now seen corresponding path program 2 times [2021-11-07 08:20:25,758 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-07 08:20:25,758 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115995789] [2021-11-07 08:20:25,758 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:20:25,758 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-07 08:20:25,758 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat [2021-11-07 08:20:25,760 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-07 08:20:25,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c137238b-8011-4117-ab1b-1031f5da6036/bin/uautomizer-AkOaLMaTGY/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process