./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer --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 1f48197f615b5bb3f646b16cb6d7957d384b7e1b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-a4ecdab [2020-11-29 19:10:01,691 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:10:01,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:10:01,752 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:10:01,753 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:10:01,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:10:01,757 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:10:01,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:10:01,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:10:01,764 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:10:01,765 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:10:01,767 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:10:01,768 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:10:01,777 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:10:01,779 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:10:01,780 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:10:01,781 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:10:01,783 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:10:01,785 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:10:01,788 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:10:01,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:10:01,795 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:10:01,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:10:01,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:10:01,821 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:10:01,822 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:10:01,822 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:10:01,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:10:01,831 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:10:01,832 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:10:01,833 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:10:01,834 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:10:01,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:10:01,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:10:01,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:10:01,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:10:01,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:10:01,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:10:01,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:10:01,842 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:10:01,843 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:10:01,856 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:10:01,895 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:10:01,895 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:10:01,897 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:10:01,897 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:10:01,897 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:10:01,897 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:10:01,898 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:10:01,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:10:01,898 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:10:01,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:10:01,898 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:10:01,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:10:01,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:10:01,899 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:10:01,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:10:01,899 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:10:01,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:10:01,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:10:01,900 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:10:01,900 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:10:01,901 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:10:01,901 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:10:01,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:10:01,901 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:10:01,902 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:10:01,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:10:01,902 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:10:01,902 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:10:01,903 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:10:01,903 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-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1f48197f615b5bb3f646b16cb6d7957d384b7e1b [2020-11-29 19:10:02,174 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:10:02,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:10:02,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:10:02,204 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:10:02,205 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:10:02,206 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound1.c [2020-11-29 19:10:02,280 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/data/9ea50f978/173b975b22d64ec4a2e71fb24a357a2e/FLAGd260eab5e [2020-11-29 19:10:02,861 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:10:02,866 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound1.c [2020-11-29 19:10:02,880 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/data/9ea50f978/173b975b22d64ec4a2e71fb24a357a2e/FLAGd260eab5e [2020-11-29 19:10:03,200 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/data/9ea50f978/173b975b22d64ec4a2e71fb24a357a2e [2020-11-29 19:10:03,203 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:10:03,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:10:03,221 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:10:03,221 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:10:03,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:10:03,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43d3f082 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03, skipping insertion in model container [2020-11-29 19:10:03,229 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:10:03,258 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:10:03,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:10:03,549 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:10:03,598 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:10:03,617 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:10:03,617 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03 WrapperNode [2020-11-29 19:10:03,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:10:03,619 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:10:03,619 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:10:03,619 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:10:03,628 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,640 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,681 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:10:03,682 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:10:03,682 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:10:03,683 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:10:03,692 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,692 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,704 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,705 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,722 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,724 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... [2020-11-29 19:10:03,727 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:10:03,737 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:10:03,737 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:10:03,737 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:10:03,742 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/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 [2020-11-29 19:10:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:10:03,838 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:10:03,839 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:10:03,841 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:10:04,270 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:10:04,271 INFO L298 CfgBuilder]: Removed 31 assume(true) statements. [2020-11-29 19:10:04,273 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:04 BoogieIcfgContainer [2020-11-29 19:10:04,273 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:10:04,281 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:10:04,281 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:10:04,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:10:04,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:10:03" (1/3) ... [2020-11-29 19:10:04,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21431df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:10:04, skipping insertion in model container [2020-11-29 19:10:04,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:10:03" (2/3) ... [2020-11-29 19:10:04,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21431df4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:10:04, skipping insertion in model container [2020-11-29 19:10:04,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:04" (3/3) ... [2020-11-29 19:10:04,294 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound1.c [2020-11-29 19:10:04,304 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:10:04,309 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-11-29 19:10:04,321 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-11-29 19:10:04,352 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:10:04,353 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:10:04,353 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:10:04,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:10:04,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:10:04,353 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:10:04,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:10:04,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:10:04,370 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-11-29 19:10:04,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:10:04,376 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,376 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:04,377 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:10:04,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:04,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1233216625, now seen corresponding path program 1 times [2020-11-29 19:10:04,393 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:04,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715083963] [2020-11-29 19:10:04,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:04,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:04,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715083963] [2020-11-29 19:10:04,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:04,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:10:04,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270399988] [2020-11-29 19:10:04,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:10:04,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:04,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:10:04,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:10:04,567 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-11-29 19:10:04,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:04,591 INFO L93 Difference]: Finished difference Result 77 states and 106 transitions. [2020-11-29 19:10:04,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:10:04,592 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-29 19:10:04,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:04,602 INFO L225 Difference]: With dead ends: 77 [2020-11-29 19:10:04,603 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 19:10:04,606 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 [2020-11-29 19:10:04,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 19:10:04,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-29 19:10:04,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-29 19:10:04,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-11-29 19:10:04,649 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 10 [2020-11-29 19:10:04,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:04,649 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-11-29 19:10:04,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:10:04,650 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-11-29 19:10:04,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 19:10:04,651 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:04,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:10:04,652 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:10:04,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:04,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1507355568, now seen corresponding path program 1 times [2020-11-29 19:10:04,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:04,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496059048] [2020-11-29 19:10:04,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:04,682 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:04,683 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [120110379] [2020-11-29 19:10:04,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/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 [2020-11-29 19:10:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:04,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:10:04,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:04,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:04,902 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496059048] [2020-11-29 19:10:04,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:04,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [120110379] [2020-11-29 19:10:04,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:04,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:10:04,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [666664416] [2020-11-29 19:10:04,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:10:04,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:04,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:10:04,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:10:04,907 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 4 states. [2020-11-29 19:10:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:04,955 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-11-29 19:10:04,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:10:04,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-29 19:10:04,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:04,960 INFO L225 Difference]: With dead ends: 42 [2020-11-29 19:10:04,960 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 19:10:04,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:10:04,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 19:10:04,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-11-29 19:10:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-11-29 19:10:04,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-11-29 19:10:04,975 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 11 [2020-11-29 19:10:04,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:04,976 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-11-29 19:10:04,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:10:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-11-29 19:10:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:10:04,979 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:04,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:05,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 19:10:05,196 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:10:05,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:05,197 INFO L82 PathProgramCache]: Analyzing trace with hash 515750889, now seen corresponding path program 1 times [2020-11-29 19:10:05,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:05,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000233425] [2020-11-29 19:10:05,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:05,255 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:05,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1220077240] [2020-11-29 19:10:05,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/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 [2020-11-29 19:10:05,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:10:05,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:05,381 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:10:05,381 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:10:05,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:05,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000233425] [2020-11-29 19:10:05,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:05,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220077240] [2020-11-29 19:10:05,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:05,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:10:05,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534433932] [2020-11-29 19:10:05,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:10:05,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:05,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:10:05,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:10:05,418 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-11-29 19:10:05,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:05,604 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-11-29 19:10:05,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:10:05,606 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-11-29 19:10:05,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:05,608 INFO L225 Difference]: With dead ends: 66 [2020-11-29 19:10:05,608 INFO L226 Difference]: Without dead ends: 62 [2020-11-29 19:10:05,609 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:10:05,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-29 19:10:05,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2020-11-29 19:10:05,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 19:10:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-11-29 19:10:05,618 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 12 [2020-11-29 19:10:05,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:05,619 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-11-29 19:10:05,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:10:05,619 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-11-29 19:10:05,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:10:05,620 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:05,620 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:05,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:05,848 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:10:05,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:05,849 INFO L82 PathProgramCache]: Analyzing trace with hash -1270616931, now seen corresponding path program 1 times [2020-11-29 19:10:05,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:05,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868823281] [2020-11-29 19:10:05,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:05,882 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:05,882 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2019450827] [2020-11-29 19:10:05,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/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 [2020-11-29 19:10:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:05,942 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:10:05,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:06,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:06,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868823281] [2020-11-29 19:10:06,020 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:06,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019450827] [2020-11-29 19:10:06,020 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:10:06,021 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:10:06,021 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149879463] [2020-11-29 19:10:06,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:10:06,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:06,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:10:06,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:10:06,023 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 5 states. [2020-11-29 19:10:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:06,118 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-11-29 19:10:06,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:10:06,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 19:10:06,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:06,123 INFO L225 Difference]: With dead ends: 49 [2020-11-29 19:10:06,123 INFO L226 Difference]: Without dead ends: 19 [2020-11-29 19:10:06,124 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:10:06,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-29 19:10:06,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-29 19:10:06,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-29 19:10:06,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-11-29 19:10:06,127 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 16 [2020-11-29 19:10:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:06,128 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-11-29 19:10:06,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:10:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-11-29 19:10:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-29 19:10:06,135 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:06,135 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:06,336 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:06,336 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 19:10:06,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:06,337 INFO L82 PathProgramCache]: Analyzing trace with hash -533984263, now seen corresponding path program 1 times [2020-11-29 19:10:06,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:06,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004546824] [2020-11-29 19:10:06,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:06,367 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:06,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1541803945] [2020-11-29 19:10:06,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/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 [2020-11-29 19:10:06,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:06,463 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:06,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:10:06,487 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:10:06,516 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:10:06,517 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:10:06,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:06,782 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:10:06 BoogieIcfgContainer [2020-11-29 19:10:06,783 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:10:06,783 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:10:06,783 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:10:06,784 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:10:06,784 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:10:04" (3/4) ... [2020-11-29 19:10:06,786 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:10:06,846 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_979ececb-353c-4901-b6ae-b980b64d1316/bin/uautomizer/witness.graphml [2020-11-29 19:10:06,847 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:10:06,849 INFO L168 Benchmark]: Toolchain (without parser) took 3642.48 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 80.8 MB in the end (delta: 17.6 MB). Peak memory consumption was 15.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:06,849 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:06,850 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.19 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 100.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:06,851 INFO L168 Benchmark]: Boogie Procedure Inliner took 62.40 ms. Allocated memory is still 123.7 MB. Free memory was 100.9 MB in the beginning and 99.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:06,851 INFO L168 Benchmark]: Boogie Preprocessor took 45.46 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:06,852 INFO L168 Benchmark]: RCFGBuilder took 536.98 ms. Allocated memory is still 123.7 MB. Free memory was 97.9 MB in the beginning and 80.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:06,853 INFO L168 Benchmark]: TraceAbstraction took 2502.01 ms. Allocated memory is still 123.7 MB. Free memory was 79.8 MB in the beginning and 83.5 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:10:06,853 INFO L168 Benchmark]: Witness Printer took 63.69 ms. Allocated memory is still 123.7 MB. Free memory was 82.9 MB in the beginning and 80.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:10:06,857 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 92.3 MB. Free memory was 52.8 MB in the beginning and 52.8 MB in the end (delta: 41.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 397.19 ms. Allocated memory is still 123.7 MB. Free memory was 98.4 MB in the beginning and 100.9 MB in the end (delta: -2.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 62.40 ms. Allocated memory is still 123.7 MB. Free memory was 100.9 MB in the beginning and 99.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.46 ms. Allocated memory is still 123.7 MB. Free memory was 99.0 MB in the beginning and 97.9 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 536.98 ms. Allocated memory is still 123.7 MB. Free memory was 97.9 MB in the beginning and 80.4 MB in the end (delta: 17.5 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2502.01 ms. Allocated memory is still 123.7 MB. Free memory was 79.8 MB in the beginning and 83.5 MB in the end (delta: -3.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * Witness Printer took 63.69 ms. Allocated memory is still 123.7 MB. Free memory was 82.9 MB in the beginning and 80.8 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: 4]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [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 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=1] [L41] EXPR counter++ VAL [counter=2] [L41] COND FALSE !(counter++<1) [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND FALSE !(counter++<1) [L11] COND TRUE !(cond) VAL [counter=3] [L4] __assert_fail("0", "egcd3-ll.c", 4, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 128 SDtfs, 172 SDslu, 117 SDs, 0 SdLazy, 46 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 23 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 45 ConstructedInterpolants, 0 QuantifiedInterpolants, 1209 SizeOfPredicates, 5 NumberOfNonLiveVariables, 247 ConjunctsInSsa, 15 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 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...