./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC --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 3e8b2633622084f06b754f22cb180cb188cb0d4f ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 00:26:29,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 00:26:29,006 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 00:26:29,041 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 00:26:29,042 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 00:26:29,044 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 00:26:29,046 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 00:26:29,048 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 00:26:29,050 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 00:26:29,052 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 00:26:29,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 00:26:29,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 00:26:29,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 00:26:29,057 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 00:26:29,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 00:26:29,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 00:26:29,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 00:26:29,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 00:26:29,065 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 00:26:29,067 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 00:26:29,069 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 00:26:29,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 00:26:29,073 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 00:26:29,074 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 00:26:29,078 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 00:26:29,078 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 00:26:29,078 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 00:26:29,080 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 00:26:29,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 00:26:29,082 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 00:26:29,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 00:26:29,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 00:26:29,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 00:26:29,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 00:26:29,086 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 00:26:29,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 00:26:29,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 00:26:29,088 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 00:26:29,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 00:26:29,093 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 00:26:29,102 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 00:26:29,103 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-11 00:26:29,171 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 00:26:29,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 00:26:29,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-11 00:26:29,175 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-11 00:26:29,175 INFO L138 SettingsManager]: * Use SBE=true [2021-10-11 00:26:29,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 00:26:29,176 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 00:26:29,176 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 00:26:29,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 00:26:29,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 00:26:29,177 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 00:26:29,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 00:26:29,178 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 00:26:29,178 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 00:26:29,178 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 00:26:29,179 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 00:26:29,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 00:26:29,179 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 00:26:29,179 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-11 00:26:29,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 00:26:29,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:29,180 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 00:26:29,180 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 00:26:29,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 00:26:29,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-11 00:26:29,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 00:26:29,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 00:26:29,182 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 00:26:29,182 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_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3e8b2633622084f06b754f22cb180cb188cb0d4f [2021-10-11 00:26:29,446 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 00:26:29,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 00:26:29,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 00:26:29,470 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 00:26:29,471 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 00:26:29,472 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/../../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-11 00:26:29,530 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/data/353df6bf2/28a5d74658904000bb9b739ed6c78e17/FLAG5f0f565c1 [2021-10-11 00:26:29,992 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 00:26:29,992 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c [2021-10-11 00:26:30,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/data/353df6bf2/28a5d74658904000bb9b739ed6c78e17/FLAG5f0f565c1 [2021-10-11 00:26:30,361 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/data/353df6bf2/28a5d74658904000bb9b739ed6c78e17 [2021-10-11 00:26:30,363 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 00:26:30,364 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 00:26:30,365 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:30,365 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 00:26:30,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 00:26:30,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7a3fa4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30, skipping insertion in model container [2021-10-11 00:26:30,377 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,384 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 00:26:30,407 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 00:26:30,542 WARN L226 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_11e978bb-a729-4259-8354-c3268f68e75c/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-11 00:26:30,568 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:30,577 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 00:26:30,586 WARN L226 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_11e978bb-a729-4259-8354-c3268f68e75c/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound1.c[489,502] [2021-10-11 00:26:30,594 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 00:26:30,608 INFO L208 MainTranslator]: Completed translation [2021-10-11 00:26:30,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30 WrapperNode [2021-10-11 00:26:30,608 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 00:26:30,610 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:30,610 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 00:26:30,610 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 00:26:30,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,649 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 00:26:30,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 00:26:30,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 00:26:30,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 00:26:30,659 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,659 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,661 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,666 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,672 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... [2021-10-11 00:26:30,676 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 00:26:30,677 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 00:26:30,677 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 00:26:30,677 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 00:26:30,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 00:26:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 00:26:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 00:26:30,770 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 00:26:30,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 00:26:31,023 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 00:26:31,024 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2021-10-11 00:26:31,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:31 BoogieIcfgContainer [2021-10-11 00:26:31,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 00:26:31,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 00:26:31,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 00:26:31,032 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 00:26:31,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 12:26:30" (1/3) ... [2021-10-11 00:26:31,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d87d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:31, skipping insertion in model container [2021-10-11 00:26:31,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 12:26:30" (2/3) ... [2021-10-11 00:26:31,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27d87d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 12:26:31, skipping insertion in model container [2021-10-11 00:26:31,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:31" (3/3) ... [2021-10-11 00:26:31,036 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound1.c [2021-10-11 00:26:31,050 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 00:26:31,053 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2021-10-11 00:26:31,065 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-10-11 00:26:31,112 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 00:26:31,112 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 00:26:31,113 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 00:26:31,113 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 00:26:31,113 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 00:26:31,113 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 00:26:31,114 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 00:26:31,114 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 00:26:31,130 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2021-10-11 00:26:31,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:26:31,135 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:31,136 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:31,137 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:31,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:31,158 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2021-10-11 00:26:31,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:31,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902400519] [2021-10-11 00:26:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:31,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:31,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902400519] [2021-10-11 00:26:31,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:31,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 00:26:31,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838428110] [2021-10-11 00:26:31,329 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2021-10-11 00:26:31,329 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:31,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-11 00:26:31,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:26:31,347 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2021-10-11 00:26:31,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:31,367 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2021-10-11 00:26:31,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-11 00:26:31,369 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2021-10-11 00:26:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:31,378 INFO L225 Difference]: With dead ends: 79 [2021-10-11 00:26:31,378 INFO L226 Difference]: Without dead ends: 37 [2021-10-11 00:26:31,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-11 00:26:31,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-10-11 00:26:31,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-10-11 00:26:31,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-10-11 00:26:31,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2021-10-11 00:26:31,420 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2021-10-11 00:26:31,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:31,420 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2021-10-11 00:26:31,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2021-10-11 00:26:31,421 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2021-10-11 00:26:31,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-11 00:26:31,421 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:31,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:31,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 00:26:31,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:31,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:31,424 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2021-10-11 00:26:31,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:31,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616728418] [2021-10-11 00:26:31,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:31,450 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:31,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [158617273] [2021-10-11 00:26:31,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:31,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:31,573 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:26:31,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:31,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:31,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616728418] [2021-10-11 00:26:31,722 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:31,722 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [158617273] [2021-10-11 00:26:31,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:31,723 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-11 00:26:31,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082023859] [2021-10-11 00:26:31,726 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:26:31,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:31,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:26:31,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:31,733 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2021-10-11 00:26:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:31,942 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2021-10-11 00:26:31,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:26:31,943 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2021-10-11 00:26:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:31,946 INFO L225 Difference]: With dead ends: 68 [2021-10-11 00:26:31,947 INFO L226 Difference]: Without dead ends: 64 [2021-10-11 00:26:31,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-11 00:26:31,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2021-10-11 00:26:31,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2021-10-11 00:26:31,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2021-10-11 00:26:31,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2021-10-11 00:26:31,967 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2021-10-11 00:26:31,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:31,967 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2021-10-11 00:26:31,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:26:31,968 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2021-10-11 00:26:31,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-11 00:26:31,968 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:31,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:32,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-10-11 00:26:32,182 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:32,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:32,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2021-10-11 00:26:32,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:32,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525194037] [2021-10-11 00:26:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:32,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:32,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:32,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525194037] [2021-10-11 00:26:32,263 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:32,263 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 00:26:32,263 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538574282] [2021-10-11 00:26:32,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:32,264 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:32,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:32,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:32,267 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2021-10-11 00:26:32,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:32,303 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2021-10-11 00:26:32,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:26:32,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2021-10-11 00:26:32,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:32,307 INFO L225 Difference]: With dead ends: 68 [2021-10-11 00:26:32,308 INFO L226 Difference]: Without dead ends: 54 [2021-10-11 00:26:32,309 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:32,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-11 00:26:32,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2021-10-11 00:26:32,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2021-10-11 00:26:32,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2021-10-11 00:26:32,321 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2021-10-11 00:26:32,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:32,322 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2021-10-11 00:26:32,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:32,322 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2021-10-11 00:26:32,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-11 00:26:32,323 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:32,323 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:32,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 00:26:32,323 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:32,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:32,324 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2021-10-11 00:26:32,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:32,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032101629] [2021-10-11 00:26:32,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:32,342 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:32,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580572226] [2021-10-11 00:26:32,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:32,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:32,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2021-10-11 00:26:32,424 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:32,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:32,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032101629] [2021-10-11 00:26:32,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:32,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580572226] [2021-10-11 00:26:32,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:32,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:26:32,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400827973] [2021-10-11 00:26:32,579 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:26:32,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:32,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:26:32,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:26:32,581 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2021-10-11 00:26:32,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:32,797 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2021-10-11 00:26:32,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:26:32,798 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2021-10-11 00:26:32,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:32,800 INFO L225 Difference]: With dead ends: 98 [2021-10-11 00:26:32,800 INFO L226 Difference]: Without dead ends: 96 [2021-10-11 00:26:32,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2021-10-11 00:26:32,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-10-11 00:26:32,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2021-10-11 00:26:32,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2021-10-11 00:26:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2021-10-11 00:26:32,818 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2021-10-11 00:26:32,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:32,818 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2021-10-11 00:26:32,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:26:32,819 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2021-10-11 00:26:32,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-11 00:26:32,819 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:32,819 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:33,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:33,046 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:33,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:33,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2021-10-11 00:26:33,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:33,047 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392281488] [2021-10-11 00:26:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:33,063 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:33,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1321475722] [2021-10-11 00:26:33,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:33,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2021-10-11 00:26:33,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:33,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:33,180 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392281488] [2021-10-11 00:26:33,180 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:33,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1321475722] [2021-10-11 00:26:33,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:33,181 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-11 00:26:33,181 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865694879] [2021-10-11 00:26:33,182 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-10-11 00:26:33,182 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:33,182 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-11 00:26:33,183 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:26:33,183 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 6 states. [2021-10-11 00:26:33,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:33,323 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2021-10-11 00:26:33,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-11 00:26:33,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-10-11 00:26:33,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:33,324 INFO L225 Difference]: With dead ends: 87 [2021-10-11 00:26:33,325 INFO L226 Difference]: Without dead ends: 79 [2021-10-11 00:26:33,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-11 00:26:33,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2021-10-11 00:26:33,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-10-11 00:26:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2021-10-11 00:26:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2021-10-11 00:26:33,335 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2021-10-11 00:26:33,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:33,336 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2021-10-11 00:26:33,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-10-11 00:26:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2021-10-11 00:26:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-11 00:26:33,337 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:33,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:33,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:33,561 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:33,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:33,563 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2021-10-11 00:26:33,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:33,563 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237289640] [2021-10-11 00:26:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:33,575 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:33,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1542200081] [2021-10-11 00:26:33,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:33,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2021-10-11 00:26:33,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:33,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:33,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237289640] [2021-10-11 00:26:33,694 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:33,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1542200081] [2021-10-11 00:26:33,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:33,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-11 00:26:33,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984086062] [2021-10-11 00:26:33,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-10-11 00:26:33,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:33,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-11 00:26:33,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-11 00:26:33,703 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2021-10-11 00:26:33,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:33,782 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2021-10-11 00:26:33,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-11 00:26:33,782 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2021-10-11 00:26:33,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:33,786 INFO L225 Difference]: With dead ends: 88 [2021-10-11 00:26:33,786 INFO L226 Difference]: Without dead ends: 86 [2021-10-11 00:26:33,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:33,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2021-10-11 00:26:33,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2021-10-11 00:26:33,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2021-10-11 00:26:33,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2021-10-11 00:26:33,809 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 17 [2021-10-11 00:26:33,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:33,810 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2021-10-11 00:26:33,810 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-10-11 00:26:33,810 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2021-10-11 00:26:33,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:26:33,812 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:33,812 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:34,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:34,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:34,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:34,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2021-10-11 00:26:34,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:34,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610299951] [2021-10-11 00:26:34,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:34,037 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:34,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1313126219] [2021-10-11 00:26:34,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:34,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2021-10-11 00:26:34,094 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:34,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:34,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610299951] [2021-10-11 00:26:34,220 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:34,220 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1313126219] [2021-10-11 00:26:34,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 00:26:34,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-10-11 00:26:34,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131282163] [2021-10-11 00:26:34,222 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-10-11 00:26:34,222 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:34,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-10-11 00:26:34,223 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-10-11 00:26:34,223 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 8 states. [2021-10-11 00:26:34,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:34,469 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2021-10-11 00:26:34,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-10-11 00:26:34,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2021-10-11 00:26:34,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:34,470 INFO L225 Difference]: With dead ends: 111 [2021-10-11 00:26:34,470 INFO L226 Difference]: Without dead ends: 103 [2021-10-11 00:26:34,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2021-10-11 00:26:34,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2021-10-11 00:26:34,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2021-10-11 00:26:34,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2021-10-11 00:26:34,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2021-10-11 00:26:34,480 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2021-10-11 00:26:34,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:34,480 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2021-10-11 00:26:34,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-10-11 00:26:34,480 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2021-10-11 00:26:34,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-11 00:26:34,481 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:34,481 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:34,697 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2021-10-11 00:26:34,697 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:34,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:34,698 INFO L82 PathProgramCache]: Analyzing trace with hash -1793740814, now seen corresponding path program 1 times [2021-10-11 00:26:34,698 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:34,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246297558] [2021-10-11 00:26:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:34,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:34,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761126671] [2021-10-11 00:26:34,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:34,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 00:26:34,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2021-10-11 00:26:34,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 00:26:34,824 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 00:26:34,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246297558] [2021-10-11 00:26:34,825 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-11 00:26:34,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761126671] [2021-10-11 00:26:34,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2021-10-11 00:26:34,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2021-10-11 00:26:34,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209575199] [2021-10-11 00:26:34,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-10-11 00:26:34,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-11 00:26:34,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-11 00:26:34,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-11 00:26:34,831 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2021-10-11 00:26:34,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 00:26:34,860 INFO L93 Difference]: Finished difference Result 92 states and 103 transitions. [2021-10-11 00:26:34,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-11 00:26:34,861 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2021-10-11 00:26:34,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 00:26:34,862 INFO L225 Difference]: With dead ends: 92 [2021-10-11 00:26:34,862 INFO L226 Difference]: Without dead ends: 39 [2021-10-11 00:26:34,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-11 00:26:34,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-10-11 00:26:34,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-10-11 00:26:34,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2021-10-11 00:26:34,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2021-10-11 00:26:34,868 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 19 [2021-10-11 00:26:34,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 00:26:34,869 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2021-10-11 00:26:34,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-10-11 00:26:34,869 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2021-10-11 00:26:34,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-11 00:26:34,870 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 00:26:34,870 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 00:26:35,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:35,077 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 00:26:35,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 00:26:35,078 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2021-10-11 00:26:35,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-11 00:26:35,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964280418] [2021-10-11 00:26:35,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 00:26:35,088 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-11 00:26:35,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1305937021] [2021-10-11 00:26:35,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:35,156 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:35,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-11 00:26:35,177 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-11 00:26:35,238 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-11 00:26:35,238 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-10-11 00:26:35,452 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 00:26:35,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 12:26:35 BoogieIcfgContainer [2021-10-11 00:26:35,487 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 00:26:35,488 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 00:26:35,488 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 00:26:35,488 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 00:26:35,489 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 12:26:31" (3/4) ... [2021-10-11 00:26:35,491 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-11 00:26:35,545 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_11e978bb-a729-4259-8354-c3268f68e75c/bin/uautomizer-Z5i5R5N3CC/witness.graphml [2021-10-11 00:26:35,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 00:26:35,547 INFO L168 Benchmark]: Toolchain (without parser) took 5181.92 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 69.3 MB in the beginning and 84.3 MB in the end (delta: -15.0 MB). Peak memory consumption was 22.4 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:35,547 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:35,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 243.95 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 59.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:35,548 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.50 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 57.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:35,549 INFO L168 Benchmark]: Boogie Preprocessor took 24.88 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 56.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:35,550 INFO L168 Benchmark]: RCFGBuilder took 349.32 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 39.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:35,550 INFO L168 Benchmark]: TraceAbstraction took 4460.11 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 39.1 MB in the beginning and 86.4 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 00:26:35,551 INFO L168 Benchmark]: Witness Printer took 57.08 ms. Allocated memory is still 130.0 MB. Free memory was 86.4 MB in the beginning and 84.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-11 00:26:35,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 94.4 MB. Free memory is still 65.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 243.95 ms. Allocated memory is still 94.4 MB. Free memory was 69.2 MB in the beginning and 59.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.50 ms. Allocated memory is still 94.4 MB. Free memory was 59.0 MB in the beginning and 57.5 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.88 ms. Allocated memory is still 94.4 MB. Free memory was 57.5 MB in the beginning and 56.2 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 349.32 ms. Allocated memory is still 94.4 MB. Free memory was 56.2 MB in the beginning and 39.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4460.11 ms. Allocated memory was 94.4 MB in the beginning and 130.0 MB in the end (delta: 35.7 MB). Free memory was 39.1 MB in the beginning and 86.4 MB in the end (delta: -47.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 57.08 ms. Allocated memory is still 130.0 MB. Free memory was 86.4 MB in the beginning and 84.3 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.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<1 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND FALSE !(counter++<1) [L11] COND TRUE !(cond) VAL [counter=2] [L13] reach_error() VAL [counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.3s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 266 SDtfs, 490 SDslu, 424 SDs, 0 SdLazy, 396 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 102 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 132 NumberOfCodeBlocks, 132 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 104 ConstructedInterpolants, 0 QuantifiedInterpolants, 6344 SizeOfPredicates, 41 NumberOfNonLiveVariables, 532 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...