./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench/prodbin-ll.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench/prodbin-ll.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be --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 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:54:34,461 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:54:34,465 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:54:34,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:54:34,533 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:54:34,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:54:34,540 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:54:34,545 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:54:34,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:54:34,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:54:34,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:54:34,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:54:34,559 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:54:34,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:54:34,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:54:34,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:54:34,572 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:54:34,573 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:54:34,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:54:34,586 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:54:34,588 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:54:34,591 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:54:34,595 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:54:34,596 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:54:34,606 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:54:34,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:54:34,607 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:54:34,609 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:54:34,610 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:54:34,612 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:54:34,612 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:54:34,614 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:54:34,616 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:54:34,618 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:54:34,619 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:54:34,620 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:54:34,621 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:54:34,621 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:54:34,621 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:54:34,623 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:54:34,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:54:34,625 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-21 19:54:34,674 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:54:34,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:54:34,675 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:54:34,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:54:34,684 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:54:34,684 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:54:34,684 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:54:34,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:54:34,685 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-21 19:54:34,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:54:34,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-21 19:54:34,687 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:54:34,687 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-21 19:54:34,687 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-21 19:54:34,687 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-21 19:54:34,688 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-21 19:54:34,688 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:54:34,688 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:54:34,689 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-21 19:54:34,689 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:54:34,689 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:54:34,689 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-21 19:54:34,690 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:54:34,690 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:54:34,690 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-21 19:54:34,691 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-21 19:54:34,691 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:54:34,691 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-21 19:54:34,691 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-21 19:54:34,692 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-21 19:54:34,692 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-21 19:54:34,692 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:54:34,693 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_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77bbfba272f7904e5efe099569a5ed86d54de3fd07a8ce9d48301467c5048e30 [2021-10-21 19:54:35,017 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:54:35,042 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:54:35,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:54:35,046 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:54:35,047 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:54:35,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/nla-digbench/prodbin-ll.c [2021-10-21 19:54:35,133 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/data/fff19eca7/8e8c913cd2f8417f9abdcb2391a75a7a/FLAG3199bfd6f [2021-10-21 19:54:35,661 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:54:35,662 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/sv-benchmarks/c/nla-digbench/prodbin-ll.c [2021-10-21 19:54:35,678 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/data/fff19eca7/8e8c913cd2f8417f9abdcb2391a75a7a/FLAG3199bfd6f [2021-10-21 19:54:36,023 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/data/fff19eca7/8e8c913cd2f8417f9abdcb2391a75a7a [2021-10-21 19:54:36,028 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:54:36,030 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:54:36,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:54:36,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:54:36,039 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:54:36,040 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,042 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@584dea4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36, skipping insertion in model container [2021-10-21 19:54:36,042 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,051 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:54:36,070 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:54:36,332 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_6cb48f4b-7577-4db2-b98e-1fd9e081678e/sv-benchmarks/c/nla-digbench/prodbin-ll.c[537,550] [2021-10-21 19:54:36,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:54:36,370 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:54:36,386 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_6cb48f4b-7577-4db2-b98e-1fd9e081678e/sv-benchmarks/c/nla-digbench/prodbin-ll.c[537,550] [2021-10-21 19:54:36,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:54:36,409 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:54:36,409 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36 WrapperNode [2021-10-21 19:54:36,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:54:36,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:54:36,412 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:54:36,412 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:54:36,419 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,427 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,452 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:54:36,453 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:54:36,453 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:54:36,453 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:54:36,463 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,464 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,493 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:54:36,494 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:54:36,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:54:36,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:54:36,496 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (1/1) ... [2021-10-21 19:54:36,511 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-21 19:54:36,525 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:36,541 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-21 19:54:36,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-21 19:54:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-21 19:54:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-21 19:54:36,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:54:36,606 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:54:36,896 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:54:36,897 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2021-10-21 19:54:36,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:36 BoogieIcfgContainer [2021-10-21 19:54:36,900 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:54:36,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-21 19:54:36,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-21 19:54:36,907 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-21 19:54:36,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.10 07:54:36" (1/3) ... [2021-10-21 19:54:36,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff9fc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:54:36, skipping insertion in model container [2021-10-21 19:54:36,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:54:36" (2/3) ... [2021-10-21 19:54:36,909 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ff9fc1f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.10 07:54:36, skipping insertion in model container [2021-10-21 19:54:36,909 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:36" (3/3) ... [2021-10-21 19:54:36,911 INFO L111 eAbstractionObserver]: Analyzing ICFG prodbin-ll.c [2021-10-21 19:54:36,918 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-21 19:54:36,919 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-10-21 19:54:36,978 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-21 19:54:36,987 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 [2021-10-21 19:54:36,987 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-10-21 19:54:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:54:37,010 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:37,011 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:37,012 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:37,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:37,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2021-10-21 19:54:37,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:37,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829843302] [2021-10-21 19:54:37,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:37,032 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:37,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:37,263 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:37,264 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829843302] [2021-10-21 19:54:37,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1829843302] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:37,265 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:37,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-21 19:54:37,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398143602] [2021-10-21 19:54:37,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-21 19:54:37,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:37,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:54:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:54:37,320 INFO L87 Difference]: Start difference. First operand has 19 states, 16 states have (on average 1.5625) internal successors, (25), 18 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:37,336 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2021-10-21 19:54:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:54:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-21 19:54:37,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:37,346 INFO L225 Difference]: With dead ends: 35 [2021-10-21 19:54:37,346 INFO L226 Difference]: Without dead ends: 15 [2021-10-21 19:54:37,350 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:54:37,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-10-21 19:54:37,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-10-21 19:54:37,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-10-21 19:54:37,397 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-10-21 19:54:37,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:37,399 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-10-21 19:54:37,399 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,400 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-10-21 19:54:37,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-10-21 19:54:37,401 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:37,401 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:37,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-21 19:54:37,402 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:37,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:37,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2021-10-21 19:54:37,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:37,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999683744] [2021-10-21 19:54:37,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:37,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:37,437 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:37,441 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1006117596] [2021-10-21 19:54:37,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:37,442 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:37,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:37,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:37,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-21 19:54:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:37,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-21 19:54:37,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:37,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:37,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:37,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999683744] [2021-10-21 19:54:37,709 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:37,709 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006117596] [2021-10-21 19:54:37,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006117596] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:37,710 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:37,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-21 19:54:37,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876904816] [2021-10-21 19:54:37,712 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-21 19:54:37,712 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:37,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-21 19:54:37,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-21 19:54:37,716 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:37,805 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2021-10-21 19:54:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:54:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 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 7 [2021-10-21 19:54:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:37,807 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:54:37,807 INFO L226 Difference]: Without dead ends: 26 [2021-10-21 19:54:37,808 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 26.6ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-10-21 19:54:37,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2021-10-21 19:54:37,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-10-21 19:54:37,814 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 7 [2021-10-21 19:54:37,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:37,816 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-10-21 19:54:37,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:37,817 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-10-21 19:54:37,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-21 19:54:37,818 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:37,819 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:37,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:38,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:38,035 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:38,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:38,036 INFO L82 PathProgramCache]: Analyzing trace with hash -1864220420, now seen corresponding path program 1 times [2021-10-21 19:54:38,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:38,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385113983] [2021-10-21 19:54:38,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:38,037 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:38,059 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:38,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [407064830] [2021-10-21 19:54:38,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:38,069 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:38,069 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:38,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:38,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-21 19:54:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:38,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 7 conjunts are in the unsatisfiable core [2021-10-21 19:54:38,132 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:38,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:38,243 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:38,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385113983] [2021-10-21 19:54:38,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:38,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [407064830] [2021-10-21 19:54:38,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [407064830] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:38,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:38,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-21 19:54:38,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371646164] [2021-10-21 19:54:38,246 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-21 19:54:38,246 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:38,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-21 19:54:38,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-21 19:54:38,247 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:38,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:38,311 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-10-21 19:54:38,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-21 19:54:38,312 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-21 19:54:38,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:38,313 INFO L225 Difference]: With dead ends: 24 [2021-10-21 19:54:38,313 INFO L226 Difference]: Without dead ends: 20 [2021-10-21 19:54:38,314 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 60.0ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-21 19:54:38,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-10-21 19:54:38,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2021-10-21 19:54:38,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.1875) internal successors, (19), 17 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:38,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-10-21 19:54:38,318 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2021-10-21 19:54:38,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:38,318 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-10-21 19:54:38,319 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:38,319 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-10-21 19:54:38,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:54:38,319 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:38,320 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:38,358 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:38,520 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:38,521 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:38,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:38,521 INFO L82 PathProgramCache]: Analyzing trace with hash -464828708, now seen corresponding path program 1 times [2021-10-21 19:54:38,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:38,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020650782] [2021-10-21 19:54:38,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:38,522 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:38,536 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:38,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910730628] [2021-10-21 19:54:38,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:38,537 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:38,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:38,538 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:38,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-21 19:54:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:38,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:54:38,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:39,973 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:39,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020650782] [2021-10-21 19:54:39,974 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:39,974 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910730628] [2021-10-21 19:54:39,974 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1910730628] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:39,974 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:39,974 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2021-10-21 19:54:39,975 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803837254] [2021-10-21 19:54:39,975 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-10-21 19:54:39,975 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:39,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-21 19:54:39,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:54:39,977 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-21 19:54:41,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:41,066 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-10-21 19:54:41,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:54:41,067 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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 [2021-10-21 19:54:41,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:41,068 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:54:41,068 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 19:54:41,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 132.1ms TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:54:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 19:54:41,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2021-10-21 19:54:41,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.2) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:41,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2021-10-21 19:54:41,074 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 12 [2021-10-21 19:54:41,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:41,074 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2021-10-21 19:54:41,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 1.5) internal successors, (12), 8 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) [2021-10-21 19:54:41,074 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2021-10-21 19:54:41,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-21 19:54:41,075 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:41,075 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:41,105 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:41,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:41,302 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:41,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:41,302 INFO L82 PathProgramCache]: Analyzing trace with hash -462981666, now seen corresponding path program 1 times [2021-10-21 19:54:41,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:41,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866315019] [2021-10-21 19:54:41,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:41,303 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:41,317 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:41,317 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [638431775] [2021-10-21 19:54:41,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:41,317 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:41,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:41,320 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:41,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-21 19:54:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:41,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 28 conjunts are in the unsatisfiable core [2021-10-21 19:54:41,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:42,449 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:54:42,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:42,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866315019] [2021-10-21 19:54:42,450 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:42,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [638431775] [2021-10-21 19:54:42,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [638431775] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:54:42,451 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:54:42,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2021-10-21 19:54:42,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28006928] [2021-10-21 19:54:42,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-10-21 19:54:42,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:42,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-10-21 19:54:42,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-10-21 19:54:42,453 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2021-10-21 19:54:42,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:42,692 INFO L93 Difference]: Finished difference Result 36 states and 39 transitions. [2021-10-21 19:54:42,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-21 19:54:42,692 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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 [2021-10-21 19:54:42,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:42,693 INFO L225 Difference]: With dead ends: 36 [2021-10-21 19:54:42,693 INFO L226 Difference]: Without dead ends: 30 [2021-10-21 19:54:42,694 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 234.9ms TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2021-10-21 19:54:42,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2021-10-21 19:54:42,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 26. [2021-10-21 19:54:42,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 24 states have (on average 1.1666666666666667) internal successors, (28), 25 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:42,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2021-10-21 19:54:42,699 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 12 [2021-10-21 19:54:42,700 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:42,700 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2021-10-21 19:54:42,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 9 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) [2021-10-21 19:54:42,700 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2021-10-21 19:54:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-21 19:54:42,701 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:42,701 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:42,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:42,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:42,924 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:42,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:42,925 INFO L82 PathProgramCache]: Analyzing trace with hash -732578001, now seen corresponding path program 1 times [2021-10-21 19:54:42,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:42,925 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106452890] [2021-10-21 19:54:42,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:42,926 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:42,939 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:42,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [152475786] [2021-10-21 19:54:42,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:42,940 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:42,940 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:42,941 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:42,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-21 19:54:43,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:54:43,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2021-10-21 19:54:43,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:54:43,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-10-21 19:54:43,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:54:43,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2106452890] [2021-10-21 19:54:43,310 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:54:43,310 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [152475786] [2021-10-21 19:54:43,310 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [152475786] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:54:43,310 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:54:43,310 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-21 19:54:43,311 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16417594] [2021-10-21 19:54:43,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-21 19:54:43,311 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:54:43,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-21 19:54:43,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-21 19:54:43,312 INFO L87 Difference]: Start difference. First operand 26 states and 28 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) [2021-10-21 19:54:47,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:54:47,450 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2021-10-21 19:54:47,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-21 19:54:47,450 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 15 [2021-10-21 19:54:47,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:54:47,453 INFO L225 Difference]: With dead ends: 27 [2021-10-21 19:54:47,453 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:54:47,453 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 216.9ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-21 19:54:47,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:54:47,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2021-10-21 19:54:47,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:54:47,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-10-21 19:54:47,457 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 15 [2021-10-21 19:54:47,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:54:47,458 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-10-21 19:54:47,458 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) [2021-10-21 19:54:47,458 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-10-21 19:54:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:54:47,459 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:54:47,459 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:54:47,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-21 19:54:47,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:47,660 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:54:47,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:54:47,661 INFO L82 PathProgramCache]: Analyzing trace with hash 416810063, now seen corresponding path program 2 times [2021-10-21 19:54:47,661 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:54:47,661 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194693422] [2021-10-21 19:54:47,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:54:47,661 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:54:47,675 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:54:47,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [109001281] [2021-10-21 19:54:47,691 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:54:47,691 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:54:47,691 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:54:47,703 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:54:47,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-21 19:54:47,826 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:54:47,826 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:54:47,828 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 42 conjunts are in the unsatisfiable core [2021-10-21 19:54:47,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:27,484 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:55:27,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:27,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194693422] [2021-10-21 19:55:27,485 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:27,485 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [109001281] [2021-10-21 19:55:27,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [109001281] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:27,485 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:27,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:55:27,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223962467] [2021-10-21 19:55:27,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:55:27,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:27,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:55:27,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:55:27,487 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:31,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:55:31,185 INFO L93 Difference]: Finished difference Result 34 states and 38 transitions. [2021-10-21 19:55:31,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:55:31,186 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 19:55:31,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:55:31,187 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:55:31,187 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 19:55:31,188 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 6335.7ms TimeCoverageRelationStatistics Valid=110, Invalid=352, Unknown=0, NotChecked=0, Total=462 [2021-10-21 19:55:31,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 19:55:31,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 23. [2021-10-21 19:55:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-21 19:55:31,195 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2021-10-21 19:55:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:55:31,195 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-21 19:55:31,196 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:31,196 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-21 19:55:31,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:55:31,197 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:55:31,197 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:55:31,253 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-21 19:55:31,422 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:31,423 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:55:31,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:55:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash 418657105, now seen corresponding path program 1 times [2021-10-21 19:55:31,424 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:55:31,424 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895078563] [2021-10-21 19:55:31,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:31,424 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:55:31,442 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:55:31,442 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [653264275] [2021-10-21 19:55:31,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:31,460 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:31,460 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:55:31,462 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:55:31,463 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-10-21 19:55:31,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:55:31,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-21 19:55:31,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:35,564 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:55:35,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:35,564 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895078563] [2021-10-21 19:55:35,565 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:35,565 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [653264275] [2021-10-21 19:55:35,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [653264275] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:35,565 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:35,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:55:35,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587647572] [2021-10-21 19:55:35,566 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:55:35,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:35,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:55:35,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:55:35,568 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:40,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:55:40,510 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2021-10-21 19:55:40,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:55:40,510 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 19:55:40,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:55:40,511 INFO L225 Difference]: With dead ends: 35 [2021-10-21 19:55:40,511 INFO L226 Difference]: Without dead ends: 33 [2021-10-21 19:55:40,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 1475.3ms TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2021-10-21 19:55:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-10-21 19:55:40,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 23. [2021-10-21 19:55:40,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:40,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-21 19:55:40,518 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2021-10-21 19:55:40,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:55:40,518 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-21 19:55:40,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:40,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-21 19:55:40,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:55:40,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:55:40,519 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:55:40,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-10-21 19:55:40,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:40,720 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:55:40,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:55:40,721 INFO L82 PathProgramCache]: Analyzing trace with hash 23783053, now seen corresponding path program 2 times [2021-10-21 19:55:40,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:55:40,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341998959] [2021-10-21 19:55:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:40,722 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:55:40,732 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:55:40,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1019474923] [2021-10-21 19:55:40,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:55:40,733 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:40,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:55:40,743 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:55:40,744 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-10-21 19:55:40,874 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:55:40,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:55:40,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 38 conjunts are in the unsatisfiable core [2021-10-21 19:55:40,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:55:44,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:44,346 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341998959] [2021-10-21 19:55:44,347 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:44,347 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019474923] [2021-10-21 19:55:44,347 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019474923] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:44,347 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:44,348 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:55:44,348 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287863611] [2021-10-21 19:55:44,348 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:55:44,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:44,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:55:44,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:55:44,350 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:45,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:55:45,179 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2021-10-21 19:55:45,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-10-21 19:55:45,180 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 19:55:45,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:55:45,181 INFO L225 Difference]: With dead ends: 39 [2021-10-21 19:55:45,181 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:55:45,181 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 494.4ms TimeCoverageRelationStatistics Valid=98, Invalid=282, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:55:45,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:55:45,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 28. [2021-10-21 19:55:45,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.1851851851851851) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:45,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2021-10-21 19:55:45,192 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2021-10-21 19:55:45,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:55:45,193 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2021-10-21 19:55:45,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 11 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:45,194 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2021-10-21 19:55:45,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-21 19:55:45,195 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:55:45,195 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2021-10-21 19:55:45,242 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-10-21 19:55:45,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-10-21 19:55:45,399 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:55:45,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:55:45,399 INFO L82 PathProgramCache]: Analyzing trace with hash 25630095, now seen corresponding path program 2 times [2021-10-21 19:55:45,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:55:45,400 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82741142] [2021-10-21 19:55:45,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:45,400 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:55:45,419 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:55:45,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1536068337] [2021-10-21 19:55:45,426 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-10-21 19:55:45,431 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:45,431 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:55:45,435 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:55:45,454 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-10-21 19:55:45,603 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-10-21 19:55:45,605 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:55:45,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 31 conjunts are in the unsatisfiable core [2021-10-21 19:55:45,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:49,822 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:55:49,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:49,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82741142] [2021-10-21 19:55:49,822 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:49,822 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1536068337] [2021-10-21 19:55:49,823 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1536068337] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:49,823 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:49,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:55:49,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608064995] [2021-10-21 19:55:49,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:55:49,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:49,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:55:49,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:55:49,824 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:50,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:55:50,620 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2021-10-21 19:55:50,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-10-21 19:55:50,621 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 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 17 [2021-10-21 19:55:50,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:55:50,621 INFO L225 Difference]: With dead ends: 40 [2021-10-21 19:55:50,622 INFO L226 Difference]: Without dead ends: 38 [2021-10-21 19:55:50,622 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 845.5ms TimeCoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:55:50,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2021-10-21 19:55:50,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 23. [2021-10-21 19:55:50,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 22 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:50,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2021-10-21 19:55:50,630 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2021-10-21 19:55:50,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:55:50,630 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2021-10-21 19:55:50,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:55:50,631 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2021-10-21 19:55:50,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:55:50,631 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:55:50,632 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:55:50,674 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-10-21 19:55:50,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-10-21 19:55:50,847 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:55:50,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:55:50,847 INFO L82 PathProgramCache]: Analyzing trace with hash 603371196, now seen corresponding path program 3 times [2021-10-21 19:55:50,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:55:50,848 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1505864701] [2021-10-21 19:55:50,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:55:50,848 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:55:50,858 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:55:50,865 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085593002] [2021-10-21 19:55:50,866 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:55:50,866 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:55:50,866 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:55:50,867 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:55:50,904 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-10-21 19:55:51,054 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:55:51,054 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:55:51,055 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 26 conjunts are in the unsatisfiable core [2021-10-21 19:55:51,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:55:52,555 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:55:52,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:55:52,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1505864701] [2021-10-21 19:55:52,555 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:55:52,556 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085593002] [2021-10-21 19:55:52,556 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085593002] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:55:52,556 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:55:52,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2021-10-21 19:55:52,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613451851] [2021-10-21 19:55:52,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-21 19:55:52,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:55:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-21 19:55:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-10-21 19:55:52,557 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:09,916 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-10-21 19:56:09,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-10-21 19:56:09,918 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 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 22 [2021-10-21 19:56:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:09,919 INFO L225 Difference]: With dead ends: 57 [2021-10-21 19:56:09,919 INFO L226 Difference]: Without dead ends: 28 [2021-10-21 19:56:09,919 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 12160.6ms TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2021-10-21 19:56:09,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-10-21 19:56:09,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2021-10-21 19:56:09,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 25 states have (on average 1.08) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-10-21 19:56:09,925 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 22 [2021-10-21 19:56:09,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:09,925 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-10-21 19:56:09,926 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 1.8181818181818181) internal successors, (20), 11 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-10-21 19:56:09,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:56:09,926 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:09,926 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:09,956 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-10-21 19:56:10,127 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-10-21 19:56:10,128 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:56:10,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:10,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1069519492, now seen corresponding path program 3 times [2021-10-21 19:56:10,129 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:10,130 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151005729] [2021-10-21 19:56:10,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:10,131 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:10,167 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:56:10,167 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1491495711] [2021-10-21 19:56:10,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:56:10,168 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:10,168 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:10,170 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:56:10,205 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-10-21 19:56:10,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-10-21 19:56:10,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:56:10,425 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 36 conjunts are in the unsatisfiable core [2021-10-21 19:56:10,427 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:56:11,863 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-21 19:56:11,864 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:11,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151005729] [2021-10-21 19:56:11,864 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:56:11,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1491495711] [2021-10-21 19:56:11,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1491495711] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:56:11,864 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:56:11,864 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2021-10-21 19:56:11,864 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491249933] [2021-10-21 19:56:11,865 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-10-21 19:56:11,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-10-21 19:56:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-10-21 19:56:11,866 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:15,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:15,131 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2021-10-21 19:56:15,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:56:15,132 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:56:15,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:15,132 INFO L225 Difference]: With dead ends: 28 [2021-10-21 19:56:15,132 INFO L226 Difference]: Without dead ends: 23 [2021-10-21 19:56:15,133 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 2057.7ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-10-21 19:56:15,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-10-21 19:56:15,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-10-21 19:56:15,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:15,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-10-21 19:56:15,146 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 22 [2021-10-21 19:56:15,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:15,147 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-10-21 19:56:15,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 1.75) internal successors, (21), 12 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:15,147 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-10-21 19:56:15,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-10-21 19:56:15,148 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:15,148 INFO L512 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:15,170 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-10-21 19:56:15,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:15,369 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:56:15,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:15,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1067672450, now seen corresponding path program 3 times [2021-10-21 19:56:15,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:15,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270432388] [2021-10-21 19:56:15,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:15,370 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:15,380 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:56:15,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [765015472] [2021-10-21 19:56:15,380 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-10-21 19:56:15,380 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:15,381 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:15,390 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:56:15,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-10-21 19:56:15,633 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2021-10-21 19:56:15,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:56:15,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 24 conjunts are in the unsatisfiable core [2021-10-21 19:56:15,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:56:19,656 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:56:19,656 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:56:19,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270432388] [2021-10-21 19:56:19,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:56:19,656 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [765015472] [2021-10-21 19:56:19,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [765015472] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:56:19,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:56:19,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2021-10-21 19:56:19,657 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765224075] [2021-10-21 19:56:19,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-10-21 19:56:19,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:56:19,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-10-21 19:56:19,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=154, Unknown=1, NotChecked=0, Total=210 [2021-10-21 19:56:19,658 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:27,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:56:27,294 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2021-10-21 19:56:27,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-10-21 19:56:27,294 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2021-10-21 19:56:27,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:56:27,295 INFO L225 Difference]: With dead ends: 34 [2021-10-21 19:56:27,295 INFO L226 Difference]: Without dead ends: 32 [2021-10-21 19:56:27,295 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 9069.7ms TimeCoverageRelationStatistics Valid=175, Invalid=424, Unknown=1, NotChecked=0, Total=600 [2021-10-21 19:56:27,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-10-21 19:56:27,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2021-10-21 19:56:27,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:27,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2021-10-21 19:56:27,302 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 22 [2021-10-21 19:56:27,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:56:27,303 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2021-10-21 19:56:27,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 1.4666666666666666) internal successors, (22), 15 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:56:27,303 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2021-10-21 19:56:27,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-10-21 19:56:27,304 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:56:27,304 INFO L512 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-10-21 19:56:27,328 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-10-21 19:56:27,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:27,510 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:56:27,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:56:27,511 INFO L82 PathProgramCache]: Analyzing trace with hash 1071715055, now seen corresponding path program 4 times [2021-10-21 19:56:27,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:56:27,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077001331] [2021-10-21 19:56:27,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:56:27,511 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:56:27,521 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:56:27,521 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [74087886] [2021-10-21 19:56:27,522 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-10-21 19:56:27,522 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:56:27,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:56:27,538 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:56:27,538 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-10-21 19:56:27,803 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-10-21 19:56:27,803 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:56:27,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 44 conjunts are in the unsatisfiable core [2021-10-21 19:56:27,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:17,212 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:17,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:17,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077001331] [2021-10-21 19:57:17,212 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:57:17,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [74087886] [2021-10-21 19:57:17,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [74087886] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:17,212 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:57:17,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2021-10-21 19:57:17,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119159241] [2021-10-21 19:57:17,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-10-21 19:57:17,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:17,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-10-21 19:57:17,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2021-10-21 19:57:17,214 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:18,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:18,378 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-10-21 19:57:18,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-10-21 19:57:18,378 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2021-10-21 19:57:18,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:18,379 INFO L225 Difference]: With dead ends: 39 [2021-10-21 19:57:18,379 INFO L226 Difference]: Without dead ends: 37 [2021-10-21 19:57:18,379 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 1077.5ms TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2021-10-21 19:57:18,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-21 19:57:18,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2021-10-21 19:57:18,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 32 states have (on average 1.03125) internal successors, (33), 32 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:18,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2021-10-21 19:57:18,389 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 27 [2021-10-21 19:57:18,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:18,389 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2021-10-21 19:57:18,389 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 1.588235294117647) internal successors, (27), 17 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:18,389 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2021-10-21 19:57:18,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-10-21 19:57:18,390 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:18,390 INFO L512 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:18,414 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:18,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-10-21 19:57:18,595 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:57:18,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:18,595 INFO L82 PathProgramCache]: Analyzing trace with hash -276169954, now seen corresponding path program 5 times [2021-10-21 19:57:18,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:18,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818125473] [2021-10-21 19:57:18,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:18,597 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:18,607 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:57:18,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1938624545] [2021-10-21 19:57:18,608 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-10-21 19:57:18,608 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:57:18,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:18,615 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:57:18,645 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-10-21 19:57:18,985 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2021-10-21 19:57:18,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:57:18,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 49 conjunts are in the unsatisfiable core [2021-10-21 19:57:18,993 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:57:45,167 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:57:45,168 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:57:45,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818125473] [2021-10-21 19:57:45,168 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:57:45,168 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1938624545] [2021-10-21 19:57:45,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1938624545] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:57:45,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:57:45,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2021-10-21 19:57:45,169 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567785106] [2021-10-21 19:57:45,169 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-10-21 19:57:45,169 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:57:45,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-10-21 19:57:45,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=252, Unknown=0, NotChecked=0, Total=306 [2021-10-21 19:57:45,171 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:47,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:57:47,889 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2021-10-21 19:57:47,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-10-21 19:57:47,890 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 32 [2021-10-21 19:57:47,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:57:47,891 INFO L225 Difference]: With dead ends: 44 [2021-10-21 19:57:47,891 INFO L226 Difference]: Without dead ends: 42 [2021-10-21 19:57:47,891 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 2987.6ms TimeCoverageRelationStatistics Valid=176, Invalid=880, Unknown=0, NotChecked=0, Total=1056 [2021-10-21 19:57:47,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-10-21 19:57:47,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 38. [2021-10-21 19:57:47,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 37 states have (on average 1.027027027027027) internal successors, (38), 37 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:47,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 38 transitions. [2021-10-21 19:57:47,904 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 38 transitions. Word has length 32 [2021-10-21 19:57:47,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:57:47,904 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 38 transitions. [2021-10-21 19:57:47,905 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 1.7777777777777777) internal successors, (32), 18 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:57:47,905 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 38 transitions. [2021-10-21 19:57:47,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-21 19:57:47,906 INFO L504 BasicCegarLoop]: Found error trace [2021-10-21 19:57:47,906 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2021-10-21 19:57:47,943 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-10-21 19:57:48,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-10-21 19:57:48,131 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-21 19:57:48,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:57:48,131 INFO L82 PathProgramCache]: Analyzing trace with hash -43657137, now seen corresponding path program 6 times [2021-10-21 19:57:48,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:57:48,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603370343] [2021-10-21 19:57:48,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:57:48,132 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:57:48,142 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-21 19:57:48,142 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922422243] [2021-10-21 19:57:48,142 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-10-21 19:57:48,142 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-21 19:57:48,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:57:48,150 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-21 19:57:48,152 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-10-21 19:57:48,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-10-21 19:57:48,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-10-21 19:57:48,555 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 53 conjunts are in the unsatisfiable core [2021-10-21 19:57:48,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-21 19:59:05,964 WARN L207 SmtUtils]: Spent 6.32 s on a formula simplification that was a NOOP. DAG size: 124 [2021-10-21 19:59:08,141 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 85 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:59:08,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:59:08,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603370343] [2021-10-21 19:59:08,142 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-21 19:59:08,142 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922422243] [2021-10-21 19:59:08,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [922422243] provided 0 perfect and 1 imperfect interpolant sequences [2021-10-21 19:59:08,142 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-21 19:59:08,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2021-10-21 19:59:08,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334657789] [2021-10-21 19:59:08,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-10-21 19:59:08,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:59:08,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-10-21 19:59:08,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=459, Unknown=7, NotChecked=0, Total=552 [2021-10-21 19:59:08,144 INFO L87 Difference]: Start difference. First operand 38 states and 38 transitions. Second operand has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:50,329 WARN L207 SmtUtils]: Spent 12.85 s on a formula simplification. DAG size of input: 133 DAG size of output: 128 [2021-10-21 19:59:54,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:59:54,325 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2021-10-21 19:59:54,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2021-10-21 19:59:54,326 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-21 19:59:54,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-21 19:59:54,326 INFO L225 Difference]: With dead ends: 42 [2021-10-21 19:59:54,326 INFO L226 Difference]: Without dead ends: 0 [2021-10-21 19:59:54,328 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 3 DeprecatedPredicates, 469 ImplicationChecksByTransitivity, 57360.4ms TimeCoverageRelationStatistics Valid=254, Invalid=1460, Unknown=8, NotChecked=0, Total=1722 [2021-10-21 19:59:54,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-21 19:59:54,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-21 19:59:54,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-21 19:59:54,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2021-10-21 19:59:54,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-21 19:59:54,328 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:59:54,329 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 1.608695652173913) internal successors, (37), 24 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:59:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:59:54,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-21 19:59:54,331 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:59:54,332 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-21 19:59:54,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-10-21 19:59:54,532 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-10-21 19:59:54,534 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-21 19:59:54,537 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:59:54,701 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:59:54,842 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 19:59:54,843 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-21 20:02:24,135 WARN L207 SmtUtils]: Spent 2.49 m on a formula simplification. DAG size of input: 233 DAG size of output: 129 [2021-10-21 20:02:49,082 WARN L207 SmtUtils]: Spent 24.94 s on a formula simplification. DAG size of input: 310 DAG size of output: 37 [2021-10-21 20:02:49,086 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-21 20:02:49,086 INFO L857 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L853 garLoopResultBuilder]: At program point L32-2(lines 32 43) the Hoare annotation is: (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse10 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0)) (.cse5 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* 2 (* .cse10 ULTIMATE.start_main_~y~0))))) (.cse3 (= ULTIMATE.start_main_~z~0 0)) (.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= 1 ULTIMATE.start_main_~b~0)) (.cse17 (exists ((aux_div_v_ULTIMATE.start_main_~y~0_29_43 Int) (aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 Int)) (let ((.cse25 (* 2 ULTIMATE.start_main_~y~0))) (let ((.cse24 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse25)) (.cse23 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_29_43))) (and (<= .cse23 .cse24) (< aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 2) (< .cse24 (+ .cse23 1)) (<= 0 (+ aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 .cse25 1)) (<= 0 aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))))))) (or (and .cse0 (= .cse1 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse3 .cse0 .cse4 .cse2) (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 (= (mod (div (- ULTIMATE.start_main_~x~0) (- 2)) (- 2)) 0) .cse4 .cse5 .cse6 .cse2) (and .cse0 .cse7 .cse6 .cse2 (let ((.cse8 (= .cse10 0))) (or (let ((.cse9 (* (- 2) .cse10 ULTIMATE.start_main_~y~0))) (let ((.cse11 (div (+ .cse1 .cse9 (* (- 1) ULTIMATE.start_main_~z~0)) .cse10))) (and (not .cse8) (= (mod (+ .cse1 .cse9 (* ULTIMATE.start_main_~z~0 (- 1))) .cse10) 0) (<= 0 .cse11) (< .cse11 2) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_34_43 Int)) (let ((.cse14 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse15 (div (* ULTIMATE.start_main_~x~0 (- 1)) (- 2)))) (let ((.cse16 (div (+ .cse14 (* (- 2) .cse15 ULTIMATE.start_main_~y~0) (* (- 1) ULTIMATE.start_main_~z~0)) .cse15))) (let ((.cse13 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_34_43)) (.cse12 (+ .cse16 (* 2 ULTIMATE.start_main_~y~0)))) (and (< .cse12 (+ .cse13 1)) (= .cse14 (+ (* 2 (* .cse15 ULTIMATE.start_main_~y~0)) .cse15 (* .cse16 .cse15))) (<= .cse13 .cse12))))))))) (and .cse5 .cse8))) .cse17) (and (or (and .cse3 (not (= (mod ULTIMATE.start_main_~b~0 2) 1)) .cse0 (= ULTIMATE.start_main_~x~0 (* 2 ULTIMATE.start_main_~a~0)) .cse7 (= ULTIMATE.start_main_~y~0 (div ULTIMATE.start_main_~b~0 2))) (let ((.cse22 (* (- 1) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (.cse18 (* (- 2) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (let ((.cse21 (div (+ (div (+ ULTIMATE.start_main_~z~0 .cse22) (- 2)) .cse18) ULTIMATE.start_main_~a~0))) (and .cse0 (= (mod (+ (div (+ (* .cse1 (- 1)) ULTIMATE.start_main_~z~0) (- 2)) .cse18) ULTIMATE.start_main_~a~0) 0) .cse7 (= ULTIMATE.start_main_~x~0 (* 4 ULTIMATE.start_main_~a~0)) (exists ((aux_div_v_ULTIMATE.start_main_~y~0_22_37 Int)) (let ((.cse20 (+ (* 2 ULTIMATE.start_main_~y~0) (div (+ (div (+ ULTIMATE.start_main_~z~0 (* (- 1) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0)) (- 2)) (* (- 2) ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) ULTIMATE.start_main_~a~0))) (.cse19 (* 2 aux_div_v_ULTIMATE.start_main_~y~0_22_37))) (and (<= .cse19 .cse20) (not (= .cse20 (+ .cse19 1))) (< .cse20 (+ .cse19 2))))) (<= 0 .cse21) (< .cse21 2) (not (= ULTIMATE.start_main_~a~0 0)) (= (mod (+ ULTIMATE.start_main_~z~0 (* 4 ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0) .cse22) (- 2)) 0))))) .cse2 .cse17)))) [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point L32-3(lines 32 43) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point L37(lines 37 40) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point L37-2(lines 37 40) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-21 20:02:49,087 INFO L860 garLoopResultBuilder]: At program point L46(lines 20 47) the Hoare annotation is: true [2021-10-21 20:02:49,088 INFO L857 garLoopResultBuilder]: For program point L13(lines 13 16) no Hoare annotation was computed. [2021-10-21 20:02:49,088 INFO L853 garLoopResultBuilder]: At program point L13-2(lines 34 35) the Hoare annotation is: (let ((.cse5 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~b~0))) (let ((.cse0 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse1 (= .cse5 (+ ULTIMATE.start_main_~z~0 (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)))) (.cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse3 (<= 1 ULTIMATE.start_main_~b~0)) (.cse4 (or (= .cse5 ULTIMATE.start_main_~z~0) (and (not (= ULTIMATE.start_main_~y~0 0)) (= (mod (+ .cse5 (* ULTIMATE.start_main_~z~0 (- 1))) ULTIMATE.start_main_~y~0) 0))))) (or (and (< 0 (+ ULTIMATE.start_main_~y~0 1)) .cse0 .cse1 .cse2 (= (mod ULTIMATE.start_main_~x~0 (- 2)) 0) .cse3 .cse4) (and (= ULTIMATE.start_main_~z~0 0) .cse0 .cse1 .cse2 .cse3 .cse4)))) [2021-10-21 20:02:49,088 INFO L857 garLoopResultBuilder]: For program point L13-3(lines 13 16) no Hoare annotation was computed. [2021-10-21 20:02:49,088 INFO L857 garLoopResultBuilder]: For program point L9(lines 9 11) no Hoare annotation was computed. [2021-10-21 20:02:49,088 INFO L860 garLoopResultBuilder]: At program point L13-5(lines 12 18) the Hoare annotation is: true [2021-10-21 20:02:49,089 INFO L857 garLoopResultBuilder]: For program point L14(lines 14 15) no Hoare annotation was computed. [2021-10-21 20:02:49,089 INFO L857 garLoopResultBuilder]: For program point L14-1(lines 14 15) no Hoare annotation was computed. [2021-10-21 20:02:49,089 INFO L857 garLoopResultBuilder]: For program point L10(line 10) no Hoare annotation was computed. [2021-10-21 20:02:49,094 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-21 20:02:49,105 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,106 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,106 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,107 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,108 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,108 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,108 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,109 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,109 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,109 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,109 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,110 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,111 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,125 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,126 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,126 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,126 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,127 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,128 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,129 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,130 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,136 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.10 08:02:49 BoogieIcfgContainer [2021-10-21 20:02:49,136 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-21 20:02:49,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 20:02:49,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 20:02:49,137 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 20:02:49,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:54:36" (3/4) ... [2021-10-21 20:02:49,140 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-21 20:02:49,151 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-21 20:02:49,151 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-21 20:02:49,151 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:02:49,152 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-21 20:02:49,174 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && b == y) || (((z == 0 && cond == 1) && 1 == cond) && 1 <= b)) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || ((((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && 1 <= cond) && y == b / 2) || ((((((((cond == 1 && ((a * b * -1 + z) / -2 + -2 * a * y) % a == 0) && 1 <= cond) && x == 4 * a) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_22_37 : int :: (2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 <= 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a && !(2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a == 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 1)) && 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 2)) && 0 <= ((z + -1 * a * b) / -2 + -2 * a * y) / a) && ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2) && !(a == 0)) && (z + 4 * a * y + -1 * a * b) % -2 == 0)) && 1 <= b) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105)) [2021-10-21 20:02:49,182 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 20:02:49,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 20:02:49,183 INFO L168 Benchmark]: Toolchain (without parser) took 493152.76 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 69.6 MB in the beginning and 27.3 MB in the end (delta: 42.3 MB). Peak memory consumption was 76.3 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,184 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 20:02:49,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 375.38 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 76.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.59 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,185 INFO L168 Benchmark]: Boogie Preprocessor took 40.55 ms. Allocated memory is still 100.7 MB. Free memory was 74.6 MB in the beginning and 73.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,185 INFO L168 Benchmark]: RCFGBuilder took 405.77 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 64.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,186 INFO L168 Benchmark]: TraceAbstraction took 492234.64 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 63.6 MB in the beginning and 29.4 MB in the end (delta: 34.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,186 INFO L168 Benchmark]: Witness Printer took 45.61 ms. Allocated memory is still 134.2 MB. Free memory was 29.4 MB in the beginning and 27.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 20:02:49,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 100.7 MB. Free memory is still 56.3 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 375.38 ms. Allocated memory is still 100.7 MB. Free memory was 69.4 MB in the beginning and 76.1 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.59 ms. Allocated memory is still 100.7 MB. Free memory was 76.1 MB in the beginning and 74.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.55 ms. Allocated memory is still 100.7 MB. Free memory was 74.6 MB in the beginning and 73.6 MB in the end (delta: 1.0 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 405.77 ms. Allocated memory is still 100.7 MB. Free memory was 73.6 MB in the beginning and 64.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 492234.64 ms. Allocated memory was 100.7 MB in the beginning and 134.2 MB in the end (delta: 33.6 MB). Free memory was 63.6 MB in the beginning and 29.4 MB in the end (delta: 34.2 MB). Peak memory consumption was 79.2 MB. Max. memory is 16.1 GB. * Witness Printer took 45.61 ms. Allocated memory is still 134.2 MB. Free memory was 29.4 MB in the beginning and 27.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 15]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 492118.1ms, OverallIterations: 16, TraceHistogramMax: 7, EmptinessCheckTime: 22.9ms, AutomataDifference: 94330.2ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 174552.8ms, InitialAbstractionConstructionTime: 12.2ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 114 SDtfs, 656 SDslu, 328 SDs, 0 SdLazy, 1957 SolverSat, 252 SolverUnsat, 8 SolverUnknown, 0 SolverNotchecked, 41594.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 391 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 4 DeprecatedPredicates, 1291 ImplicationChecksByTransitivity, 94535.8ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=15, InterpolantAutomatonStates: 178, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 120.3ms AutomataMinimizationTime, 16 MinimizatonAttempts, 87 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 32 NumberOfFragments, 663 HoareAnnotationTreeSize, 4 FomulaSimplifications, 98739 FormulaSimplificationTreeSizeReduction, 308.8ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 28346 FormulaSimplificationTreeSizeReductionInter, 174236.9ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 102.3ms SsaConstructionTime, 612.3ms SatisfiabilityAnalysisTime, 216492.7ms InterpolantComputationTime, 293 NumberOfCodeBlocks, 283 NumberOfCodeBlocksAsserted, 38 NumberOfCheckSat, 277 ConstructedInterpolants, 18 QuantifiedInterpolants, 8307 SizeOfPredicates, 138 NumberOfNonLiveVariables, 1277 ConjunctsInSsa, 451 ConjunctsInUnsatCore, 16 InterpolantComputations, 4 PerfectInterpolantSequences, 31/291 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 32]: Loop Invariant [2021-10-21 20:02:49,198 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,199 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,199 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,199 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,199 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,199 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,200 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,200 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,200 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,200 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,200 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,201 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,202 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,202 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,204 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_34_43,QUANTIFIED] [2021-10-21 20:02:49,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,205 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,206 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_22_37,QUANTIFIED] [2021-10-21 20:02:49,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_div_v_ULTIMATE.start_main_~y~0_29_43,QUANTIFIED] [2021-10-21 20:02:49,207 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] [2021-10-21 20:02:49,208 WARN L418 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105,QUANTIFIED] Derived loop invariant: (((((((cond == 1 && a * b == z + x * y) && a == x) && 1 <= b) && b == y) || (((z == 0 && cond == 1) && 1 == cond) && 1 <= b)) || ((((((0 < y + 1 && cond == 1) && -x / -2 % -2 == 0) && 1 == cond) && a * b == z + 2 * (x * -1 / -2 * y)) && x % -2 == 0) && 1 <= b)) || (((((cond == 1 && 1 <= cond) && x % -2 == 0) && 1 <= b) && (((((!(x * -1 / -2 == 0) && (a * b + -2 * (x * -1 / -2) * y + z * -1) % (x * -1 / -2) == 0) && 0 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2)) && (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) < 2) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_34_43 : int :: ((a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 + 1 && a * b == 2 * (x * -1 / -2 * y) + x * -1 / -2 + (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) * (x * -1 / -2)) && 2 * aux_div_v_ULTIMATE.start_main_~y~0_34_43 <= (a * b + -2 * (x * -1 / -2) * y + -1 * z) / (x * -1 / -2) + 2 * y)) || (a * b == z + 2 * (x * -1 / -2 * y) && x * -1 / -2 == 0))) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105))) || ((((((((z == 0 && !(b % 2 == 1)) && cond == 1) && x == 2 * a) && 1 <= cond) && y == b / 2) || ((((((((cond == 1 && ((a * b * -1 + z) / -2 + -2 * a * y) % a == 0) && 1 <= cond) && x == 4 * a) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_22_37 : int :: (2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 <= 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a && !(2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a == 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 1)) && 2 * y + ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2 * aux_div_v_ULTIMATE.start_main_~y~0_22_37 + 2)) && 0 <= ((z + -1 * a * b) / -2 + -2 * a * y) / a) && ((z + -1 * a * b) / -2 + -2 * a * y) / a < 2) && !(a == 0)) && (z + 4 * a * y + -1 * a * b) % -2 == 0)) && 1 <= b) && (\exists aux_div_v_ULTIMATE.start_main_~y~0_29_43 : int, aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 : int :: (((2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 < 2) && aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y < 2 * aux_div_v_ULTIMATE.start_main_~y~0_29_43 + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105 + 2 * y + 1) && 0 <= aux_mod_aux_mod_v_ULTIMATE.start_main_~y~0_29_43_105)) - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((((((0 < y + 1 && cond == 1) && a * b == z + x * y) && 1 == cond) && x % -2 == 0) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) || (((((z == 0 && cond == 1) && a * b == z + x * y) && 1 == cond) && 1 <= b) && (a * b == z || (!(y == 0) && (a * b + z * -1) % y == 0))) - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 RESULT: Ultimate proved your program to be correct! [2021-10-21 20:02:49,426 WARN L435 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process [2021-10-21 20:02:49,469 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6cb48f4b-7577-4db2-b98e-1fd9e081678e/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 137 Received shutdown request...