./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-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_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/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 c7ed30bee3fda0a70051912ec28c31301bd11923 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 [2020-11-30 01:04:42,487 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 01:04:42,491 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 01:04:42,598 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 01:04:42,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 01:04:42,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 01:04:42,603 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 01:04:42,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 01:04:42,610 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 01:04:42,612 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 01:04:42,614 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 01:04:42,616 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 01:04:42,617 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 01:04:42,618 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 01:04:42,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 01:04:42,622 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 01:04:42,624 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 01:04:42,626 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 01:04:42,628 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 01:04:42,632 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 01:04:42,634 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 01:04:42,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 01:04:42,638 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 01:04:42,640 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 01:04:42,644 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 01:04:42,645 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 01:04:42,645 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 01:04:42,647 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 01:04:42,648 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 01:04:42,649 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 01:04:42,650 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 01:04:42,651 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 01:04:42,653 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 01:04:42,654 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 01:04:42,656 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 01:04:42,656 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 01:04:42,658 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 01:04:42,658 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 01:04:42,659 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 01:04:42,660 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 01:04:42,661 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 01:04:42,663 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 01:04:42,692 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 01:04:42,692 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 01:04:42,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 01:04:42,694 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 01:04:42,695 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 01:04:42,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 01:04:42,695 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 01:04:42,695 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 01:04:42,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 01:04:42,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 01:04:42,696 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 01:04:42,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 01:04:42,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 01:04:42,697 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 01:04:42,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 01:04:42,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 01:04:42,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 01:04:42,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 01:04:42,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 01:04:42,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 01:04:42,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 01:04:42,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 01:04:42,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 01:04:42,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 01:04:42,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 01:04:42,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 01:04:42,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 01:04:42,700 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 01:04:42,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 01:04:42,701 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_d5d53be6-c4a9-4f84-ac70-154b2d650035/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7ed30bee3fda0a70051912ec28c31301bd11923 [2020-11-30 01:04:43,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 01:04:43,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 01:04:43,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 01:04:43,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 01:04:43,151 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 01:04:43,153 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2020-11-30 01:04:43,268 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/data/cb99fc388/41189024e02148c19aed4bb8a092ab04/FLAGa682d39d0 [2020-11-30 01:04:43,983 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 01:04:43,986 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound1.c [2020-11-30 01:04:44,001 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/data/cb99fc388/41189024e02148c19aed4bb8a092ab04/FLAGa682d39d0 [2020-11-30 01:04:44,313 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/data/cb99fc388/41189024e02148c19aed4bb8a092ab04 [2020-11-30 01:04:44,322 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 01:04:44,325 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 01:04:44,331 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 01:04:44,331 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 01:04:44,336 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 01:04:44,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,341 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52e4671 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44, skipping insertion in model container [2020-11-30 01:04:44,341 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 01:04:44,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 01:04:44,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:04:44,710 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 01:04:44,736 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 01:04:44,755 INFO L208 MainTranslator]: Completed translation [2020-11-30 01:04:44,756 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44 WrapperNode [2020-11-30 01:04:44,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 01:04:44,759 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 01:04:44,759 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 01:04:44,759 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 01:04:44,770 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,780 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,810 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 01:04:44,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 01:04:44,812 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 01:04:44,812 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 01:04:44,822 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,832 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... [2020-11-30 01:04:44,844 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 01:04:44,845 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 01:04:44,846 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 01:04:44,846 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 01:04:44,847 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/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 [2020-11-30 01:04:44,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 01:04:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 01:04:44,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 01:04:44,940 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 01:04:45,444 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 01:04:45,445 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-30 01:04:45,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:04:45 BoogieIcfgContainer [2020-11-30 01:04:45,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 01:04:45,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 01:04:45,469 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 01:04:45,477 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 01:04:45,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 01:04:44" (1/3) ... [2020-11-30 01:04:45,478 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36909220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:04:45, skipping insertion in model container [2020-11-30 01:04:45,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 01:04:44" (2/3) ... [2020-11-30 01:04:45,479 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36909220 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 01:04:45, skipping insertion in model container [2020-11-30 01:04:45,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:04:45" (3/3) ... [2020-11-30 01:04:45,481 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound1.c [2020-11-30 01:04:45,496 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 01:04:45,502 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-30 01:04:45,518 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-30 01:04:45,557 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 01:04:45,558 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 01:04:45,558 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 01:04:45,558 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 01:04:45,559 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 01:04:45,559 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 01:04:45,560 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 01:04:45,560 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 01:04:45,590 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-30 01:04:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:04:45,597 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:45,598 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:45,599 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]=== [2020-11-30 01:04:45,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:45,611 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-11-30 01:04:45,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:45,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1289706713] [2020-11-30 01:04:45,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:45,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:45,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1289706713] [2020-11-30 01:04:45,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:45,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 01:04:45,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037341077] [2020-11-30 01:04:45,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 01:04:45,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:45,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 01:04:45,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 01:04:45,892 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-30 01:04:45,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:45,930 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-11-30 01:04:45,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 01:04:45,932 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-30 01:04:45,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:45,948 INFO L225 Difference]: With dead ends: 79 [2020-11-30 01:04:45,949 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:04:45,962 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 [2020-11-30 01:04:45,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:04:46,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 01:04:46,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:04:46,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-30 01:04:46,025 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-11-30 01:04:46,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:46,026 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-30 01:04:46,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 01:04:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-30 01:04:46,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-30 01:04:46,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:46,030 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:46,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 01:04:46,034 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]=== [2020-11-30 01:04:46,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:46,038 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-30 01:04:46,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:46,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4214088] [2020-11-30 01:04:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:46,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:46,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4214088] [2020-11-30 01:04:46,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:46,236 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:04:46,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046281648] [2020-11-30 01:04:46,238 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:04:46,239 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:46,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:04:46,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:04:46,241 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-30 01:04:46,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:46,484 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-30 01:04:46,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:04:46,486 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-30 01:04:46,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:46,488 INFO L225 Difference]: With dead ends: 61 [2020-11-30 01:04:46,488 INFO L226 Difference]: Without dead ends: 59 [2020-11-30 01:04:46,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:04:46,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-30 01:04:46,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-11-30 01:04:46,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 01:04:46,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-30 01:04:46,500 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-30 01:04:46,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:46,500 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-30 01:04:46,500 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:04:46,513 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-30 01:04:46,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:04:46,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:46,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:46,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-30 01:04:46,515 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]=== [2020-11-30 01:04:46,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:46,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1985979217, now seen corresponding path program 1 times [2020-11-30 01:04:46,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:46,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829612767] [2020-11-30 01:04:46,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:46,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:46,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:46,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829612767] [2020-11-30 01:04:46,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:46,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-30 01:04:46,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979620020] [2020-11-30 01:04:46,588 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:04:46,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:46,589 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:04:46,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:04:46,589 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-30 01:04:46,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:46,627 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-11-30 01:04:46,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:04:46,628 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 01:04:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:46,629 INFO L225 Difference]: With dead ends: 56 [2020-11-30 01:04:46,630 INFO L226 Difference]: Without dead ends: 37 [2020-11-30 01:04:46,631 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 [2020-11-30 01:04:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-30 01:04:46,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-30 01:04:46,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-30 01:04:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-30 01:04:46,640 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-11-30 01:04:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:46,640 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-30 01:04:46,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:04:46,641 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-30 01:04:46,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 01:04:46,642 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:46,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:46,642 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-30 01:04:46,642 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]=== [2020-11-30 01:04:46,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:46,643 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-30 01:04:46,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:46,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191528696] [2020-11-30 01:04:46,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:46,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:46,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:46,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191528696] [2020-11-30 01:04:46,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:46,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:04:46,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369552723] [2020-11-30 01:04:46,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:04:46,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:46,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:04:46,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:04:46,769 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-30 01:04:46,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:46,988 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-11-30 01:04:46,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:04:46,989 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-30 01:04:46,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:46,990 INFO L225 Difference]: With dead ends: 56 [2020-11-30 01:04:46,990 INFO L226 Difference]: Without dead ends: 54 [2020-11-30 01:04:46,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:04:46,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-30 01:04:46,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-11-30 01:04:47,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-30 01:04:47,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-30 01:04:47,001 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-11-30 01:04:47,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:47,002 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-30 01:04:47,002 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:04:47,002 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-30 01:04:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 01:04:47,003 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:47,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:47,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-30 01:04:47,006 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]=== [2020-11-30 01:04:47,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:47,007 INFO L82 PathProgramCache]: Analyzing trace with hash -911432462, now seen corresponding path program 1 times [2020-11-30 01:04:47,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:47,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316198741] [2020-11-30 01:04:47,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:47,052 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:04:47,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [207673473] [2020-11-30 01:04:47,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/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 [2020-11-30 01:04:47,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:47,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:04:47,163 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:04:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:47,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316198741] [2020-11-30 01:04:47,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:04:47,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [207673473] [2020-11-30 01:04:47,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:47,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:04:47,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935999530] [2020-11-30 01:04:47,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:04:47,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:47,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:04:47,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:04:47,287 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-30 01:04:47,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:47,490 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-11-30 01:04:47,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:04:47,491 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-30 01:04:47,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:47,493 INFO L225 Difference]: With dead ends: 81 [2020-11-30 01:04:47,493 INFO L226 Difference]: Without dead ends: 58 [2020-11-30 01:04:47,494 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:04:47,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-30 01:04:47,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-11-30 01:04:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-30 01:04:47,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-11-30 01:04:47,507 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-11-30 01:04:47,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:47,508 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-11-30 01:04:47,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:04:47,508 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-11-30 01:04:47,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-30 01:04:47,509 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:47,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:47,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:04:47,731 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]=== [2020-11-30 01:04:47,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:47,732 INFO L82 PathProgramCache]: Analyzing trace with hash 854054780, now seen corresponding path program 1 times [2020-11-30 01:04:47,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:47,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101800398] [2020-11-30 01:04:47,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:47,750 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:04:47,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1077187207] [2020-11-30 01:04:47,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/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 [2020-11-30 01:04:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:47,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:04:47,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:04:47,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:47,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101800398] [2020-11-30 01:04:47,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:04:47,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1077187207] [2020-11-30 01:04:47,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:47,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:04:47,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658281604] [2020-11-30 01:04:47,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:04:47,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:47,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:04:47,936 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:04:47,936 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 5 states. [2020-11-30 01:04:47,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:47,982 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-11-30 01:04:47,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:04:47,983 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-30 01:04:47,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:47,984 INFO L225 Difference]: With dead ends: 61 [2020-11-30 01:04:47,984 INFO L226 Difference]: Without dead ends: 36 [2020-11-30 01:04:47,985 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 [2020-11-30 01:04:47,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-30 01:04:47,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-11-30 01:04:47,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-11-30 01:04:47,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-11-30 01:04:47,992 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 16 [2020-11-30 01:04:47,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:47,993 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-11-30 01:04:47,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:04:47,993 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-11-30 01:04:47,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 01:04:47,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:47,998 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:48,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:04:48,221 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]=== [2020-11-30 01:04:48,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:48,222 INFO L82 PathProgramCache]: Analyzing trace with hash 705869687, now seen corresponding path program 1 times [2020-11-30 01:04:48,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:48,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40595945] [2020-11-30 01:04:48,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:48,239 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:04:48,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [169414895] [2020-11-30 01:04:48,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/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 [2020-11-30 01:04:48,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:48,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 01:04:48,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:04:48,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:48,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40595945] [2020-11-30 01:04:48,377 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:04:48,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [169414895] [2020-11-30 01:04:48,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 01:04:48,378 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 01:04:48,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373527660] [2020-11-30 01:04:48,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 01:04:48,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:48,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 01:04:48,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 01:04:48,380 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 4 states. [2020-11-30 01:04:48,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:48,474 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-11-30 01:04:48,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-30 01:04:48,475 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-11-30 01:04:48,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:48,476 INFO L225 Difference]: With dead ends: 36 [2020-11-30 01:04:48,476 INFO L226 Difference]: Without dead ends: 30 [2020-11-30 01:04:48,477 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 [2020-11-30 01:04:48,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-30 01:04:48,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-30 01:04:48,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-30 01:04:48,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-11-30 01:04:48,498 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 17 [2020-11-30 01:04:48,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:48,499 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-11-30 01:04:48,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 01:04:48,499 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-11-30 01:04:48,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-30 01:04:48,500 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:48,501 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:48,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:04:48,717 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]=== [2020-11-30 01:04:48,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:48,718 INFO L82 PathProgramCache]: Analyzing trace with hash 1125726404, now seen corresponding path program 1 times [2020-11-30 01:04:48,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:48,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17606462] [2020-11-30 01:04:48,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:48,746 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:04:48,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [265351812] [2020-11-30 01:04:48,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/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 [2020-11-30 01:04:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 01:04:48,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 01:04:48,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 01:04:48,941 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 01:04:48,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17606462] [2020-11-30 01:04:48,942 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 01:04:48,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265351812] [2020-11-30 01:04:48,943 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 01:04:48,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-30 01:04:48,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624230320] [2020-11-30 01:04:48,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 01:04:48,944 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 01:04:48,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 01:04:48,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-30 01:04:48,945 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 5 states. [2020-11-30 01:04:48,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 01:04:48,987 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-11-30 01:04:48,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 01:04:48,989 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-11-30 01:04:48,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 01:04:48,989 INFO L225 Difference]: With dead ends: 40 [2020-11-30 01:04:48,990 INFO L226 Difference]: Without dead ends: 22 [2020-11-30 01:04:48,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-11-30 01:04:48,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-30 01:04:48,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-30 01:04:48,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 01:04:48,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2020-11-30 01:04:48,995 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 20 [2020-11-30 01:04:48,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 01:04:48,996 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2020-11-30 01:04:48,996 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 01:04:48,996 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2020-11-30 01:04:48,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 01:04:48,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 01:04:48,998 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 01:04:49,217 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:04:49,217 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]=== [2020-11-30 01:04:49,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 01:04:49,218 INFO L82 PathProgramCache]: Analyzing trace with hash 1866467861, now seen corresponding path program 1 times [2020-11-30 01:04:49,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 01:04:49,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068926834] [2020-11-30 01:04:49,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 01:04:49,232 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 01:04:49,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [749358139] [2020-11-30 01:04:49,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/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 [2020-11-30 01:04:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:04:49,310 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:04:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-30 01:04:49,331 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-30 01:04:49,363 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-30 01:04:49,364 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-30 01:04:49,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 01:04:49,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 01:04:49 BoogieIcfgContainer [2020-11-30 01:04:49,652 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 01:04:49,653 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 01:04:49,654 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 01:04:49,654 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 01:04:49,655 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 01:04:45" (3/4) ... [2020-11-30 01:04:49,657 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-30 01:04:49,764 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d5d53be6-c4a9-4f84-ac70-154b2d650035/bin/uautomizer/witness.graphml [2020-11-30 01:04:49,764 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 01:04:49,766 INFO L168 Benchmark]: Toolchain (without parser) took 5440.56 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 71.2 MB in the beginning and 47.3 MB in the end (delta: 23.9 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:49,767 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 79.2 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:04:49,768 INFO L168 Benchmark]: CACSL2BoogieTranslator took 426.92 ms. Allocated memory is still 107.0 MB. Free memory was 71.1 MB in the beginning and 82.2 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:49,769 INFO L168 Benchmark]: Boogie Procedure Inliner took 51.84 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 80.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:49,770 INFO L168 Benchmark]: Boogie Preprocessor took 32.99 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 79.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 01:04:49,771 INFO L168 Benchmark]: RCFGBuilder took 619.15 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 62.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:49,772 INFO L168 Benchmark]: TraceAbstraction took 4184.51 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 62.2 MB in the beginning and 50.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:49,773 INFO L168 Benchmark]: Witness Printer took 110.93 ms. Allocated memory is still 130.0 MB. Free memory was 50.4 MB in the beginning and 47.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 01:04:49,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 107.0 MB. Free memory was 79.2 MB in the beginning and 79.2 MB in the end (delta: 27.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 426.92 ms. Allocated memory is still 107.0 MB. Free memory was 71.1 MB in the beginning and 82.2 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 51.84 ms. Allocated memory is still 107.0 MB. Free memory was 82.2 MB in the beginning and 80.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 32.99 ms. Allocated memory is still 107.0 MB. Free memory was 80.5 MB in the beginning and 79.4 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 619.15 ms. Allocated memory is still 107.0 MB. Free memory was 79.4 MB in the beginning and 62.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4184.51 ms. Allocated memory was 107.0 MB in the beginning and 130.0 MB in the end (delta: 23.1 MB). Free memory was 62.2 MB in the beginning and 50.4 MB in the end (delta: 11.8 MB). Peak memory consumption was 35.3 MB. Max. memory is 16.1 GB. * Witness Printer took 110.93 ms. Allocated memory is still 130.0 MB. Free memory was 50.4 MB in the beginning and 47.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<1 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND FALSE !(counter++<1) [L45] EXPR counter++ VAL [counter=3] [L45] COND FALSE !(counter++<1) [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND TRUE !(cond) VAL [counter=3] [L8] __assert_fail("0", "hard-ll.c", 8, "reach_error") VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.0s, OverallIterations: 9, TraceHistogramMax: 2, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 234 SDtfs, 159 SDslu, 227 SDs, 0 SdLazy, 136 SolverSat, 37 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 80 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred in iteration=5, 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, 52 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 122 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 93 ConstructedInterpolants, 0 QuantifiedInterpolants, 4551 SizeOfPredicates, 13 NumberOfNonLiveVariables, 335 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 8 InterpolantComputations, 7 PerfectInterpolantSequences, 6/7 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...