./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.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_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 8826306ae53b4154d29530d9da06b16418244e52 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 [2020-11-28 03:09:15,385 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:15,387 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:15,452 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:15,454 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:15,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:15,464 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:15,474 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:15,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:15,494 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:15,496 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:15,499 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:15,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:15,504 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:15,506 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:15,509 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:15,511 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:15,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:15,520 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:15,530 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:15,533 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:15,535 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:15,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:15,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:15,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:15,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:15,552 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:15,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:15,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:15,557 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:15,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:15,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:15,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:15,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:15,565 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:15,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:15,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:15,567 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:15,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:15,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:15,571 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:15,574 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:09:15,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:15,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:15,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:15,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:15,623 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:15,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:15,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:09:15,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:15,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:09:15,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:15,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:09:15,625 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:09:15,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:09:15,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:09:15,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:09:15,626 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:15,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:09:15,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:15,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:15,627 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:09:15,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:09:15,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:09:15,628 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:15,628 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:09:15,628 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:09:15,628 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:15,629 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:09:15,629 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:09:15,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:15,630 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_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8826306ae53b4154d29530d9da06b16418244e52 [2020-11-28 03:09:15,933 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:15,961 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:15,964 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:15,966 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:15,978 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:15,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2020-11-28 03:09:16,071 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/data/0e934124b/9c5df0e52e044bd4b3074f5f475a2a18/FLAG467d3fcbc [2020-11-28 03:09:16,729 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:16,730 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/sv-benchmarks/c/nla-digbench-scaling/mannadiv_unwindbound10.c [2020-11-28 03:09:16,738 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/data/0e934124b/9c5df0e52e044bd4b3074f5f475a2a18/FLAG467d3fcbc [2020-11-28 03:09:17,116 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/data/0e934124b/9c5df0e52e044bd4b3074f5f475a2a18 [2020-11-28 03:09:17,120 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:17,123 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:09:17,129 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:17,129 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:17,134 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:17,135 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,137 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e55af1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17, skipping insertion in model container [2020-11-28 03:09:17,137 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,146 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:17,166 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:17,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:17,426 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:17,464 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:17,488 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:17,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17 WrapperNode [2020-11-28 03:09:17,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:17,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:17,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:09:17,494 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:09:17,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,516 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,547 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:17,549 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:17,550 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:17,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:17,561 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,561 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,586 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... [2020-11-28 03:09:17,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:17,590 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:17,590 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:17,590 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:17,592 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 [2020-11-28 03:09:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:09:17,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:09:17,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:17,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:18,188 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:18,189 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 03:09:18,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:18 BoogieIcfgContainer [2020-11-28 03:09:18,191 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:18,193 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:09:18,193 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:09:18,201 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:09:18,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:09:17" (1/3) ... [2020-11-28 03:09:18,202 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ca4855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:18, skipping insertion in model container [2020-11-28 03:09:18,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:17" (2/3) ... [2020-11-28 03:09:18,203 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ca4855 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:09:18, skipping insertion in model container [2020-11-28 03:09:18,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:18" (3/3) ... [2020-11-28 03:09:18,205 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_unwindbound10.c [2020-11-28 03:09:18,228 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:09:18,232 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-28 03:09:18,244 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-28 03:09:18,269 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:09:18,269 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:09:18,269 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:09:18,270 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:18,270 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:18,270 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:09:18,270 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:18,270 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:09:18,286 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-11-28 03:09:18,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:18,291 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:18,292 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:18,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:18,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1235309937, now seen corresponding path program 1 times [2020-11-28 03:09:18,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:18,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529625177] [2020-11-28 03:09:18,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:18,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529625177] [2020-11-28 03:09:18,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:18,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:18,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991907623] [2020-11-28 03:09:18,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:09:18,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:18,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:09:18,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:09:18,489 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2020-11-28 03:09:18,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:18,509 INFO L93 Difference]: Finished difference Result 39 states and 52 transitions. [2020-11-28 03:09:18,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:09:18,511 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-28 03:09:18,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:18,521 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:09:18,521 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:09:18,525 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 [2020-11-28 03:09:18,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:09:18,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:09:18,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:09:18,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-11-28 03:09:18,564 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 10 [2020-11-28 03:09:18,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:18,565 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-11-28 03:09:18,565 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:09:18,565 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-11-28 03:09:18,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:09:18,566 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:18,566 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:18,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:09:18,567 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:18,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:18,568 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-11-28 03:09:18,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:18,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713163937] [2020-11-28 03:09:18,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:18,595 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:18,596 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1254385997] [2020-11-28 03:09:18,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 [2020-11-28 03:09:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:18,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:09:18,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:18,815 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:18,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:18,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713163937] [2020-11-28 03:09:18,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:18,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254385997] [2020-11-28 03:09:18,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:18,904 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:09:18,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856933001] [2020-11-28 03:09:18,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:18,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:18,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:18,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:18,911 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 6 states. [2020-11-28 03:09:19,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:19,263 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-11-28 03:09:19,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:09:19,264 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-11-28 03:09:19,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:19,265 INFO L225 Difference]: With dead ends: 32 [2020-11-28 03:09:19,266 INFO L226 Difference]: Without dead ends: 30 [2020-11-28 03:09:19,267 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:09:19,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-28 03:09:19,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 20. [2020-11-28 03:09:19,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:09:19,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-11-28 03:09:19,274 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 10 [2020-11-28 03:09:19,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:19,274 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-11-28 03:09:19,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:19,275 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-11-28 03:09:19,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:09:19,275 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:19,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:19,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-28 03:09:19,492 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:19,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:19,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1507423092, now seen corresponding path program 1 times [2020-11-28 03:09:19,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:19,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277070856] [2020-11-28 03:09:19,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:19,514 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:19,514 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1982744202] [2020-11-28 03:09:19,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 [2020-11-28 03:09:19,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:19,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:09:19,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:19,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:19,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277070856] [2020-11-28 03:09:19,645 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:19,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982744202] [2020-11-28 03:09:19,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:19,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:09:19,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004328508] [2020-11-28 03:09:19,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:09:19,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:19,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:19,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:19,648 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 4 states. [2020-11-28 03:09:19,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:19,682 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-28 03:09:19,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:09:19,683 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-11-28 03:09:19,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:19,683 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:09:19,684 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:09:19,684 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 [2020-11-28 03:09:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:09:19,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:09:19,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:09:19,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-28 03:09:19,690 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 11 [2020-11-28 03:09:19,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:19,690 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:09:19,691 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:09:19,691 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-28 03:09:19,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:09:19,692 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:19,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:19,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:19,908 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:19,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:19,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1188504123, now seen corresponding path program 1 times [2020-11-28 03:09:19,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:19,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787494358] [2020-11-28 03:09:19,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:19,928 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:19,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363645788] [2020-11-28 03:09:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 [2020-11-28 03:09:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:20,007 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:09:20,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:20,061 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:09:20,062 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:09:20,199 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:20,199 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787494358] [2020-11-28 03:09:20,200 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:20,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363645788] [2020-11-28 03:09:20,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:20,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-28 03:09:20,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2397394] [2020-11-28 03:09:20,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:20,202 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:20,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:20,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:20,203 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 6 states. [2020-11-28 03:09:22,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:22,610 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-11-28 03:09:22,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:22,611 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-28 03:09:22,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:22,612 INFO L225 Difference]: With dead ends: 27 [2020-11-28 03:09:22,612 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 03:09:22,613 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:22,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 03:09:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2020-11-28 03:09:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:09:22,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 03:09:22,619 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-11-28 03:09:22,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:22,620 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 03:09:22,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:22,620 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 03:09:22,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:09:22,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:22,621 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:22,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:22,822 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:22,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:22,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1768635143, now seen corresponding path program 1 times [2020-11-28 03:09:22,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:22,823 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321013775] [2020-11-28 03:09:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:22,841 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:22,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2077753705] [2020-11-28 03:09:22,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 [2020-11-28 03:09:22,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:22,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:09:22,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:22,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:22,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321013775] [2020-11-28 03:09:22,982 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:22,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2077753705] [2020-11-28 03:09:22,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:22,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-28 03:09:22,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304492599] [2020-11-28 03:09:22,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:09:22,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:22,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:09:22,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:09:22,985 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 5 states. [2020-11-28 03:09:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:23,050 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-11-28 03:09:23,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:09:23,056 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-28 03:09:23,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:23,057 INFO L225 Difference]: With dead ends: 26 [2020-11-28 03:09:23,057 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:09:23,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:23,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:09:23,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-11-28 03:09:23,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:09:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-28 03:09:23,067 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 16 [2020-11-28 03:09:23,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:23,068 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-28 03:09:23,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:09:23,068 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-28 03:09:23,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-28 03:09:23,069 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:23,069 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:23,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:23,270 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:23,271 INFO L82 PathProgramCache]: Analyzing trace with hash 71944364, now seen corresponding path program 2 times [2020-11-28 03:09:23,272 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:23,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381840889] [2020-11-28 03:09:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:23,289 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:23,289 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [670437927] [2020-11-28 03:09:23,290 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/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 [2020-11-28 03:09:23,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:09:23,393 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:23,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:09:23,396 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:23,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381840889] [2020-11-28 03:09:23,486 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:23,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670437927] [2020-11-28 03:09:23,487 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:23,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-28 03:09:23,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170291511] [2020-11-28 03:09:23,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:09:23,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:23,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:09:23,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:09:23,489 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 6 states. [2020-11-28 03:09:23,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:23,563 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-11-28 03:09:23,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:09:23,564 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-11-28 03:09:23,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:23,565 INFO L225 Difference]: With dead ends: 31 [2020-11-28 03:09:23,565 INFO L226 Difference]: Without dead ends: 27 [2020-11-28 03:09:23,566 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:23,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-28 03:09:23,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-28 03:09:23,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:09:23,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-28 03:09:23,574 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 21 [2020-11-28 03:09:23,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:23,575 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-28 03:09:23,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:09:23,575 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-28 03:09:23,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:09:23,577 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:23,577 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:23,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-28 03:09:23,793 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:23,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:23,794 INFO L82 PathProgramCache]: Analyzing trace with hash 800201945, now seen corresponding path program 3 times [2020-11-28 03:09:23,794 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:23,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531991085] [2020-11-28 03:09:23,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:23,815 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:23,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [364876677] [2020-11-28 03:09:23,816 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:23,909 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:09:23,910 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:23,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:09:23,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:23,987 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:23,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531991085] [2020-11-28 03:09:23,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:23,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364876677] [2020-11-28 03:09:23,988 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:23,988 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-28 03:09:23,988 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116336350] [2020-11-28 03:09:23,988 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:09:23,989 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:23,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:09:23,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:09:23,989 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 7 states. [2020-11-28 03:09:24,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:24,079 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-11-28 03:09:24,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:09:24,080 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-11-28 03:09:24,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:24,081 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:09:24,081 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:09:24,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:09:24,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:09:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-11-28 03:09:24,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:09:24,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-11-28 03:09:24,090 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 26 [2020-11-28 03:09:24,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:24,090 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-11-28 03:09:24,090 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:09:24,090 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-11-28 03:09:24,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-28 03:09:24,092 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:24,092 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:24,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:24,315 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:24,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:24,316 INFO L82 PathProgramCache]: Analyzing trace with hash -1993843508, now seen corresponding path program 4 times [2020-11-28 03:09:24,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:24,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428377505] [2020-11-28 03:09:24,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:24,348 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:24,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [956324791] [2020-11-28 03:09:24,352 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:24,461 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:09:24,461 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:24,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:09:24,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:24,574 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:24,574 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428377505] [2020-11-28 03:09:24,575 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:24,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [956324791] [2020-11-28 03:09:24,575 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:24,575 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:09:24,576 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564558773] [2020-11-28 03:09:24,576 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:09:24,576 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:24,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:09:24,577 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:09:24,577 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-11-28 03:09:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:24,691 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-11-28 03:09:24,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:09:24,693 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-28 03:09:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:24,695 INFO L225 Difference]: With dead ends: 41 [2020-11-28 03:09:24,695 INFO L226 Difference]: Without dead ends: 37 [2020-11-28 03:09:24,695 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:09:24,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-28 03:09:24,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-28 03:09:24,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:09:24,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-11-28 03:09:24,711 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 31 [2020-11-28 03:09:24,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:24,711 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-11-28 03:09:24,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:09:24,711 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-11-28 03:09:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-28 03:09:24,715 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:24,715 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:24,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:24,927 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:24,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:24,928 INFO L82 PathProgramCache]: Analyzing trace with hash -915727175, now seen corresponding path program 5 times [2020-11-28 03:09:24,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:24,928 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354776878] [2020-11-28 03:09:24,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:24,948 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:24,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [666031033] [2020-11-28 03:09:24,948 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:25,038 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:09:25,038 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:25,040 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:09:25,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:25,170 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:25,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354776878] [2020-11-28 03:09:25,171 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:25,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666031033] [2020-11-28 03:09:25,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:25,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:09:25,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664095545] [2020-11-28 03:09:25,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:09:25,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:25,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:09:25,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:09:25,173 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 9 states. [2020-11-28 03:09:25,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:25,325 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2020-11-28 03:09:25,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:09:25,326 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 36 [2020-11-28 03:09:25,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:25,327 INFO L225 Difference]: With dead ends: 46 [2020-11-28 03:09:25,327 INFO L226 Difference]: Without dead ends: 42 [2020-11-28 03:09:25,328 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:09:25,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-28 03:09:25,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-11-28 03:09:25,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 03:09:25,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-11-28 03:09:25,346 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 36 [2020-11-28 03:09:25,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:25,347 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-11-28 03:09:25,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:09:25,347 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-11-28 03:09:25,350 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-11-28 03:09:25,351 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:25,351 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:25,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-28 03:09:25,567 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:25,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:25,567 INFO L82 PathProgramCache]: Analyzing trace with hash -462141204, now seen corresponding path program 6 times [2020-11-28 03:09:25,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:25,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523366502] [2020-11-28 03:09:25,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:25,596 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:25,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1020569731] [2020-11-28 03:09:25,603 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:25,718 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:09:25,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:25,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:09:25,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:25,840 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:25,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523366502] [2020-11-28 03:09:25,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:25,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1020569731] [2020-11-28 03:09:25,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:25,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:09:25,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554566774] [2020-11-28 03:09:25,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:09:25,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:25,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:09:25,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:09:25,843 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 10 states. [2020-11-28 03:09:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:25,986 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-11-28 03:09:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:09:25,987 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 41 [2020-11-28 03:09:25,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:25,988 INFO L225 Difference]: With dead ends: 51 [2020-11-28 03:09:25,989 INFO L226 Difference]: Without dead ends: 47 [2020-11-28 03:09:25,989 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:09:25,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-11-28 03:09:25,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-11-28 03:09:25,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:09:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-11-28 03:09:25,998 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 41 [2020-11-28 03:09:25,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:25,998 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-11-28 03:09:25,998 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:09:25,998 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-11-28 03:09:25,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 03:09:25,999 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:25,999 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:26,227 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:26,227 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:26,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:26,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1286749031, now seen corresponding path program 7 times [2020-11-28 03:09:26,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:26,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835899035] [2020-11-28 03:09:26,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:26,244 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:26,245 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [823061284] [2020-11-28 03:09:26,245 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:26,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:09:26,379 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:26,563 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:26,564 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835899035] [2020-11-28 03:09:26,564 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:26,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [823061284] [2020-11-28 03:09:26,565 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:26,565 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-11-28 03:09:26,565 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805026486] [2020-11-28 03:09:26,566 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:09:26,566 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:26,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:09:26,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:09:26,568 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 11 states. [2020-11-28 03:09:26,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:26,751 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-11-28 03:09:26,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:09:26,752 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 46 [2020-11-28 03:09:26,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:26,753 INFO L225 Difference]: With dead ends: 56 [2020-11-28 03:09:26,753 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:09:26,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=117, Invalid=189, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:09:26,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:09:26,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-11-28 03:09:26,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 03:09:26,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-11-28 03:09:26,764 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 46 [2020-11-28 03:09:26,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:26,764 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-11-28 03:09:26,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:09:26,766 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-11-28 03:09:26,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-11-28 03:09:26,767 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:26,767 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:26,967 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:26,968 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:26,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:26,969 INFO L82 PathProgramCache]: Analyzing trace with hash 1331662092, now seen corresponding path program 8 times [2020-11-28 03:09:26,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:26,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875839343] [2020-11-28 03:09:26,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:26,987 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:26,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1234906547] [2020-11-28 03:09:26,994 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:27,102 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:09:27,103 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:27,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 03:09:27,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:27,305 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:27,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875839343] [2020-11-28 03:09:27,306 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:27,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1234906547] [2020-11-28 03:09:27,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:27,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-28 03:09:27,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422846992] [2020-11-28 03:09:27,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:09:27,308 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:27,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:09:27,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:09:27,309 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 12 states. [2020-11-28 03:09:27,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:27,549 INFO L93 Difference]: Finished difference Result 61 states and 70 transitions. [2020-11-28 03:09:27,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 03:09:27,550 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-11-28 03:09:27,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:27,551 INFO L225 Difference]: With dead ends: 61 [2020-11-28 03:09:27,551 INFO L226 Difference]: Without dead ends: 57 [2020-11-28 03:09:27,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=145, Invalid=235, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:09:27,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-11-28 03:09:27,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-11-28 03:09:27,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:09:27,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-11-28 03:09:27,577 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 51 [2020-11-28 03:09:27,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:27,579 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-11-28 03:09:27,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:09:27,580 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-11-28 03:09:27,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-11-28 03:09:27,583 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:27,584 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:27,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 03:09:27,811 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:27,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:27,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1553460103, now seen corresponding path program 9 times [2020-11-28 03:09:27,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:27,812 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714651973] [2020-11-28 03:09:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:27,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:27,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1962339937] [2020-11-28 03:09:27,845 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:28,564 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 03:09:28,564 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:09:28,572 INFO L263 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 03:09:28,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:28,814 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:28,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714651973] [2020-11-28 03:09:28,814 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:09:28,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962339937] [2020-11-28 03:09:28,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:09:28,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-11-28 03:09:28,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703660304] [2020-11-28 03:09:28,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:09:28,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:28,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:09:28,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:09:28,817 INFO L87 Difference]: Start difference. First operand 57 states and 66 transitions. Second operand 13 states. [2020-11-28 03:09:29,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:29,060 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-11-28 03:09:29,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:09:29,061 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 56 [2020-11-28 03:09:29,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:09:29,062 INFO L225 Difference]: With dead ends: 66 [2020-11-28 03:09:29,062 INFO L226 Difference]: Without dead ends: 62 [2020-11-28 03:09:29,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-11-28 03:09:29,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-11-28 03:09:29,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-11-28 03:09:29,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 03:09:29,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2020-11-28 03:09:29,081 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 56 [2020-11-28 03:09:29,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:09:29,082 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2020-11-28 03:09:29,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:09:29,082 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2020-11-28 03:09:29,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-11-28 03:09:29,085 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:09:29,086 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:09:29,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:09:29,292 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:09:29,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:29,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1399051988, now seen corresponding path program 10 times [2020-11-28 03:09:29,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:29,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2041878233] [2020-11-28 03:09:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:29,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:09:29,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1989708357] [2020-11-28 03:09:29,305 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:09:29,416 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:09:29,416 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-28 03:09:29,417 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:29,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:29,454 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:29,512 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:29,513 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:09:29,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:09:29,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:09:29 BoogieIcfgContainer [2020-11-28 03:09:29,825 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:09:29,839 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:29,839 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:29,839 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:29,840 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:18" (3/4) ... [2020-11-28 03:09:29,842 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:09:29,950 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_ac98a8e5-97fe-4087-95f2-1a544b9ad361/bin/uautomizer/witness.graphml [2020-11-28 03:09:29,954 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:29,956 INFO L168 Benchmark]: Toolchain (without parser) took 12831.79 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 66.1 MB in the beginning and 126.0 MB in the end (delta: -59.9 MB). Peak memory consumption was 84.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:29,958 INFO L168 Benchmark]: CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:29,959 INFO L168 Benchmark]: CACSL2BoogieTranslator took 361.17 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 56.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:29,959 INFO L168 Benchmark]: Boogie Procedure Inliner took 54.70 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 54.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:29,960 INFO L168 Benchmark]: Boogie Preprocessor took 39.67 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 53.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:29,960 INFO L168 Benchmark]: RCFGBuilder took 601.13 ms. Allocated memory is still 94.4 MB. Free memory was 53.7 MB in the beginning and 73.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:29,961 INFO L168 Benchmark]: TraceAbstraction took 11632.24 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 72.9 MB in the beginning and 42.8 MB in the end (delta: 30.1 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:29,961 INFO L168 Benchmark]: Witness Printer took 115.92 ms. Allocated memory is still 151.0 MB. Free memory was 42.8 MB in the beginning and 126.0 MB in the end (delta: -83.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:29,963 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 ms. Allocated memory is still 73.4 MB. Free memory is still 41.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 361.17 ms. Allocated memory is still 94.4 MB. Free memory was 65.8 MB in the beginning and 56.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 54.70 ms. Allocated memory is still 94.4 MB. Free memory was 56.3 MB in the beginning and 54.9 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 39.67 ms. Allocated memory is still 94.4 MB. Free memory was 54.9 MB in the beginning and 53.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 601.13 ms. Allocated memory is still 94.4 MB. Free memory was 53.7 MB in the beginning and 73.3 MB in the end (delta: -19.6 MB). Peak memory consumption was 17.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11632.24 ms. Allocated memory was 94.4 MB in the beginning and 151.0 MB in the end (delta: 56.6 MB). Free memory was 72.9 MB in the beginning and 42.8 MB in the end (delta: 30.1 MB). Peak memory consumption was 87.7 MB. Max. memory is 16.1 GB. * Witness Printer took 115.92 ms. Allocated memory is still 151.0 MB. Free memory was 42.8 MB in the beginning and 126.0 MB in the end (delta: -83.2 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: 9]: 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] int x1, x2; [L25] int y1, y2, y3; [L26] x1 = __VERIFIER_nondet_int() [L27] x2 = __VERIFIER_nondet_int() [L13] COND FALSE !(!cond) VAL [counter=0] [L13] COND FALSE !(!cond) VAL [counter=0] [L32] y1 = 0 [L33] y2 = 0 [L34] y3 = x1 VAL [counter=0] [L36] EXPR counter++ VAL [counter=1] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=1] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=1] [L36] EXPR counter++ VAL [counter=2] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=2] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=2] [L36] EXPR counter++ VAL [counter=3] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=3] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=3] [L36] EXPR counter++ VAL [counter=4] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=4] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=4] [L36] EXPR counter++ VAL [counter=5] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=5] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=5] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=5] [L36] EXPR counter++ VAL [counter=6] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=6] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=6] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=6] [L36] EXPR counter++ VAL [counter=7] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=7] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=7] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=7] [L36] EXPR counter++ VAL [counter=8] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=8] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=8] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=8] [L36] EXPR counter++ VAL [counter=9] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=9] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=9] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=9] [L36] EXPR counter++ VAL [counter=10] [L36] COND TRUE counter++<10 [L16] COND FALSE !(!(cond)) VAL [counter=10] [L39] COND FALSE !(!(y3 != 0)) VAL [counter=10] [L41] COND TRUE y2 + 1 == x2 [L42] y1 = y1 + 1 [L43] y2 = 0 [L44] y3 = y3 - 1 VAL [counter=10] [L36] EXPR counter++ VAL [counter=11] [L36] COND FALSE !(counter++<10) [L16] COND TRUE !(cond) VAL [counter=11] [L9] __assert_fail("0", "mannadiv.c", 9, "reach_error") VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 21 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.4s, OverallIterations: 14, TraceHistogramMax: 11, AutomataDifference: 4.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 192 SDtfs, 176 SDslu, 573 SDs, 0 SdLazy, 234 SolverSat, 32 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 402 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=13, 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, 13 MinimizatonAttempts, 14 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 429 NumberOfCodeBlocks, 429 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 355 ConstructedInterpolants, 0 QuantifiedInterpolants, 37125 SizeOfPredicates, 63 NumberOfNonLiveVariables, 1690 ConjunctsInSsa, 144 ConjunctsInUnsatCore, 13 InterpolantComputations, 4 PerfectInterpolantSequences, 0/690 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...