./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54a68f41 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 40c038cfd8d3f3338969cc5f73679c75f790320b .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 0.2.1-54a68f4 [2020-12-03 16:12:18,380 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 16:12:18,383 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 16:12:18,423 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 16:12:18,424 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 16:12:18,426 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 16:12:18,428 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 16:12:18,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 16:12:18,433 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 16:12:18,434 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 16:12:18,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 16:12:18,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 16:12:18,438 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 16:12:18,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 16:12:18,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 16:12:18,443 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 16:12:18,444 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 16:12:18,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 16:12:18,448 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 16:12:18,451 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 16:12:18,453 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 16:12:18,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 16:12:18,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 16:12:18,463 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 16:12:18,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 16:12:18,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 16:12:18,476 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 16:12:18,478 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 16:12:18,480 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 16:12:18,482 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 16:12:18,482 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 16:12:18,483 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 16:12:18,485 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 16:12:18,488 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 16:12:18,489 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 16:12:18,490 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 16:12:18,491 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 16:12:18,491 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 16:12:18,492 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 16:12:18,494 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 16:12:18,495 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 16:12:18,497 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-03 16:12:18,558 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 16:12:18,560 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 16:12:18,562 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 16:12:18,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 16:12:18,565 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 16:12:18,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 16:12:18,565 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 16:12:18,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 16:12:18,566 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 16:12:18,567 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 16:12:18,568 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 16:12:18,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 16:12:18,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 16:12:18,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 16:12:18,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 16:12:18,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 16:12:18,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 16:12:18,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 16:12:18,571 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 16:12:18,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 16:12:18,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 16:12:18,572 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 16:12:18,572 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 16:12:18,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 16:12:18,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-03 16:12:18,573 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 16:12:18,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 16:12:18,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 16:12:18,574 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40c038cfd8d3f3338969cc5f73679c75f790320b [2020-12-03 16:12:19,078 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 16:12:19,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 16:12:19,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 16:12:19,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 16:12:19,113 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 16:12:19,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c [2020-12-03 16:12:19,191 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97515f811/34381fa887234f198a8b292dc0d7ce9a/FLAG3177c4938 [2020-12-03 16:12:19,772 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 16:12:19,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c [2020-12-03 16:12:19,782 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97515f811/34381fa887234f198a8b292dc0d7ce9a/FLAG3177c4938 [2020-12-03 16:12:20,142 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/97515f811/34381fa887234f198a8b292dc0d7ce9a [2020-12-03 16:12:20,145 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 16:12:20,147 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 16:12:20,149 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 16:12:20,150 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 16:12:20,158 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 16:12:20,159 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,164 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45890f2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20, skipping insertion in model container [2020-12-03 16:12:20,165 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 16:12:20,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 16:12:20,390 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c[489,502] [2020-12-03 16:12:20,411 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 16:12:20,423 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 16:12:20,439 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd-ll_unwindbound2.c[489,502] [2020-12-03 16:12:20,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 16:12:20,469 INFO L208 MainTranslator]: Completed translation [2020-12-03 16:12:20,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20 WrapperNode [2020-12-03 16:12:20,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 16:12:20,472 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 16:12:20,472 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 16:12:20,472 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 16:12:20,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,519 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 16:12:20,520 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 16:12:20,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 16:12:20,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 16:12:20,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,531 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,538 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,544 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,546 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... [2020-12-03 16:12:20,548 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 16:12:20,550 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 16:12:20,550 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 16:12:20,550 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 16:12:20,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:20,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 16:12:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 16:12:20,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 16:12:20,673 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 16:12:21,144 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 16:12:21,145 INFO L299 CfgBuilder]: Removed 23 assume(true) statements. [2020-12-03 16:12:21,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:12:21 BoogieIcfgContainer [2020-12-03 16:12:21,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 16:12:21,150 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 16:12:21,150 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 16:12:21,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 16:12:21,154 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:12:20" (1/3) ... [2020-12-03 16:12:21,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6263a3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:12:21, skipping insertion in model container [2020-12-03 16:12:21,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:12:20" (2/3) ... [2020-12-03 16:12:21,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6263a3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:12:21, skipping insertion in model container [2020-12-03 16:12:21,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:12:21" (3/3) ... [2020-12-03 16:12:21,158 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd-ll_unwindbound2.c [2020-12-03 16:12:21,175 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 16:12:21,179 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-03 16:12:21,203 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-03 16:12:21,232 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 16:12:21,232 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 16:12:21,232 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 16:12:21,233 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 16:12:21,233 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 16:12:21,233 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 16:12:21,233 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 16:12:21,234 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 16:12:21,252 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-12-03 16:12:21,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 16:12:21,259 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:21,260 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:21,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:21,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:21,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1236199694, now seen corresponding path program 1 times [2020-12-03 16:12:21,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:21,282 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727062293] [2020-12-03 16:12:21,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:21,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:21,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:21,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727062293] [2020-12-03 16:12:21,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:21,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 16:12:21,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803773817] [2020-12-03 16:12:21,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 16:12:21,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:21,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 16:12:21,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 16:12:21,486 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-12-03 16:12:21,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:21,510 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-12-03 16:12:21,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 16:12:21,512 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-03 16:12:21,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:21,524 INFO L225 Difference]: With dead ends: 79 [2020-12-03 16:12:21,524 INFO L226 Difference]: Without dead ends: 37 [2020-12-03 16:12:21,531 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 [2020-12-03 16:12:21,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-12-03 16:12:21,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-12-03 16:12:21,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-12-03 16:12:21,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 39 transitions. [2020-12-03 16:12:21,587 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 39 transitions. Word has length 10 [2020-12-03 16:12:21,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:21,588 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 39 transitions. [2020-12-03 16:12:21,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 16:12:21,590 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 39 transitions. [2020-12-03 16:12:21,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 16:12:21,591 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:21,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:21,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 16:12:21,596 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:21,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:21,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1988288018, now seen corresponding path program 1 times [2020-12-03 16:12:21,601 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:21,601 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445544751] [2020-12-03 16:12:21,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:21,653 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:21,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [59795753] [2020-12-03 16:12:21,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:21,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:21,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-03 16:12:21,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:21,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:21,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445544751] [2020-12-03 16:12:21,964 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:21,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [59795753] [2020-12-03 16:12:21,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:21,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:12:21,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497901844] [2020-12-03 16:12:21,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:12:21,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:21,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:12:21,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:12:21,969 INFO L87 Difference]: Start difference. First operand 37 states and 39 transitions. Second operand 5 states. [2020-12-03 16:12:22,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:22,191 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2020-12-03 16:12:22,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 16:12:22,192 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-12-03 16:12:22,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:22,194 INFO L225 Difference]: With dead ends: 68 [2020-12-03 16:12:22,194 INFO L226 Difference]: Without dead ends: 64 [2020-12-03 16:12:22,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:12:22,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-03 16:12:22,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-12-03 16:12:22,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-03 16:12:22,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-12-03 16:12:22,209 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 10 [2020-12-03 16:12:22,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:22,210 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-12-03 16:12:22,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:12:22,210 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-12-03 16:12:22,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 16:12:22,211 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:22,211 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:22,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 16:12:22,422 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:22,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:22,423 INFO L82 PathProgramCache]: Analyzing trace with hash -1507402239, now seen corresponding path program 1 times [2020-12-03 16:12:22,423 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:22,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671579873] [2020-12-03 16:12:22,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:22,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:22,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:22,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671579873] [2020-12-03 16:12:22,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:22,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 16:12:22,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281030513] [2020-12-03 16:12:22,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 16:12:22,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:22,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 16:12:22,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 16:12:22,551 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 4 states. [2020-12-03 16:12:22,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:22,577 INFO L93 Difference]: Finished difference Result 68 states and 77 transitions. [2020-12-03 16:12:22,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 16:12:22,578 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 16:12:22,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:22,583 INFO L225 Difference]: With dead ends: 68 [2020-12-03 16:12:22,583 INFO L226 Difference]: Without dead ends: 54 [2020-12-03 16:12:22,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 16:12:22,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-03 16:12:22,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-12-03 16:12:22,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-12-03 16:12:22,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-12-03 16:12:22,595 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 11 [2020-12-03 16:12:22,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:22,595 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-12-03 16:12:22,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 16:12:22,596 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-12-03 16:12:22,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 16:12:22,596 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:22,597 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:22,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-03 16:12:22,597 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:22,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:22,609 INFO L82 PathProgramCache]: Analyzing trace with hash 515817425, now seen corresponding path program 1 times [2020-12-03 16:12:22,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:22,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1989105899] [2020-12-03 16:12:22,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:22,637 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:22,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [92734924] [2020-12-03 16:12:22,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:22,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:22,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-03 16:12:22,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:22,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:22,926 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1989105899] [2020-12-03 16:12:22,927 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:22,927 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [92734924] [2020-12-03 16:12:22,927 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:22,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-03 16:12:22,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584341] [2020-12-03 16:12:22,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:12:22,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:22,930 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:12:22,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:12:22,931 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2020-12-03 16:12:23,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:23,424 INFO L93 Difference]: Finished difference Result 98 states and 115 transitions. [2020-12-03 16:12:23,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:12:23,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-03 16:12:23,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:23,431 INFO L225 Difference]: With dead ends: 98 [2020-12-03 16:12:23,432 INFO L226 Difference]: Without dead ends: 96 [2020-12-03 16:12:23,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:12:23,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-12-03 16:12:23,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 70. [2020-12-03 16:12:23,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-03 16:12:23,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2020-12-03 16:12:23,449 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 12 [2020-12-03 16:12:23,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:23,449 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2020-12-03 16:12:23,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:12:23,450 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2020-12-03 16:12:23,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-03 16:12:23,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:23,450 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:23,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:23,666 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:23,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:23,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1779462740, now seen corresponding path program 1 times [2020-12-03 16:12:23,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:23,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611846963] [2020-12-03 16:12:23,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:23,683 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:23,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1836767657] [2020-12-03 16:12:23,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:23,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:23,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-03 16:12:23,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:23,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611846963] [2020-12-03 16:12:23,867 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:23,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836767657] [2020-12-03 16:12:23,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:23,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-03 16:12:23,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791370200] [2020-12-03 16:12:23,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 16:12:23,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:23,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 16:12:23,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:12:23,870 INFO L87 Difference]: Start difference. First operand 70 states and 87 transitions. Second operand 6 states. [2020-12-03 16:12:24,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:24,113 INFO L93 Difference]: Finished difference Result 87 states and 101 transitions. [2020-12-03 16:12:24,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:12:24,114 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-12-03 16:12:24,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:24,115 INFO L225 Difference]: With dead ends: 87 [2020-12-03 16:12:24,115 INFO L226 Difference]: Without dead ends: 79 [2020-12-03 16:12:24,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-03 16:12:24,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-03 16:12:24,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2020-12-03 16:12:24,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-03 16:12:24,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-12-03 16:12:24,129 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 14 [2020-12-03 16:12:24,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:24,129 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-12-03 16:12:24,130 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 16:12:24,130 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-12-03 16:12:24,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 16:12:24,131 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:24,131 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:24,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:24,347 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:24,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:24,348 INFO L82 PathProgramCache]: Analyzing trace with hash -801918668, now seen corresponding path program 1 times [2020-12-03 16:12:24,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:24,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091938263] [2020-12-03 16:12:24,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:24,364 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:24,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380030052] [2020-12-03 16:12:24,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:24,424 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 16:12:24,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:24,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091938263] [2020-12-03 16:12:24,469 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:24,475 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380030052] [2020-12-03 16:12:24,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:24,477 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 16:12:24,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870479390] [2020-12-03 16:12:24,478 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 16:12:24,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:24,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 16:12:24,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 16:12:24,491 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 4 states. [2020-12-03 16:12:24,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:24,573 INFO L93 Difference]: Finished difference Result 88 states and 102 transitions. [2020-12-03 16:12:24,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 16:12:24,574 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-12-03 16:12:24,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:24,576 INFO L225 Difference]: With dead ends: 88 [2020-12-03 16:12:24,576 INFO L226 Difference]: Without dead ends: 86 [2020-12-03 16:12:24,577 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:12:24,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-12-03 16:12:24,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 72. [2020-12-03 16:12:24,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-12-03 16:12:24,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 86 transitions. [2020-12-03 16:12:24,603 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 86 transitions. Word has length 17 [2020-12-03 16:12:24,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:24,604 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 86 transitions. [2020-12-03 16:12:24,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 16:12:24,605 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 86 transitions. [2020-12-03 16:12:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-03 16:12:24,607 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:24,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:24,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:24,821 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:24,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:24,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1844536457, now seen corresponding path program 1 times [2020-12-03 16:12:24,823 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:24,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205546612] [2020-12-03 16:12:24,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:24,837 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:24,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [151981381] [2020-12-03 16:12:24,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:24,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-03 16:12:24,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:25,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:25,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205546612] [2020-12-03 16:12:25,016 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:25,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151981381] [2020-12-03 16:12:25,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:12:25,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-03 16:12:25,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492590903] [2020-12-03 16:12:25,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:12:25,018 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:25,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:12:25,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:12:25,019 INFO L87 Difference]: Start difference. First operand 72 states and 86 transitions. Second operand 8 states. [2020-12-03 16:12:25,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:25,301 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-12-03 16:12:25,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 16:12:25,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-12-03 16:12:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:25,303 INFO L225 Difference]: With dead ends: 111 [2020-12-03 16:12:25,303 INFO L226 Difference]: Without dead ends: 103 [2020-12-03 16:12:25,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:12:25,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-12-03 16:12:25,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2020-12-03 16:12:25,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-12-03 16:12:25,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-12-03 16:12:25,317 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 19 [2020-12-03 16:12:25,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:25,317 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-12-03 16:12:25,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:12:25,318 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-12-03 16:12:25,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-03 16:12:25,319 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:25,319 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:25,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-03 16:12:25,535 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:25,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:25,536 INFO L82 PathProgramCache]: Analyzing trace with hash -1793740814, now seen corresponding path program 1 times [2020-12-03 16:12:25,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:25,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142870768] [2020-12-03 16:12:25,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:25,554 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:25,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1670088378] [2020-12-03 16:12:25,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:25,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 16:12:25,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:25,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-03 16:12:25,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142870768] [2020-12-03 16:12:25,696 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:25,696 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670088378] [2020-12-03 16:12:25,696 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:12:25,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-03 16:12:25,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739325294] [2020-12-03 16:12:25,697 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:12:25,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:25,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:12:25,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:12:25,699 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 5 states. [2020-12-03 16:12:25,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:25,830 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2020-12-03 16:12:25,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 16:12:25,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-12-03 16:12:25,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:25,832 INFO L225 Difference]: With dead ends: 101 [2020-12-03 16:12:25,832 INFO L226 Difference]: Without dead ends: 97 [2020-12-03 16:12:25,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:12:25,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-12-03 16:12:25,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 87. [2020-12-03 16:12:25,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-03 16:12:25,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 102 transitions. [2020-12-03 16:12:25,846 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 102 transitions. Word has length 19 [2020-12-03 16:12:25,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:25,846 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 102 transitions. [2020-12-03 16:12:25,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:12:25,847 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 102 transitions. [2020-12-03 16:12:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-03 16:12:25,847 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:25,847 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:26,062 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:26,063 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:26,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:26,064 INFO L82 PathProgramCache]: Analyzing trace with hash 171335487, now seen corresponding path program 1 times [2020-12-03 16:12:26,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:26,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692649023] [2020-12-03 16:12:26,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:26,075 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:26,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1070998923] [2020-12-03 16:12:26,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:26,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:26,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 16:12:26,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:26,182 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:26,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692649023] [2020-12-03 16:12:26,182 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:26,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070998923] [2020-12-03 16:12:26,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:12:26,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-03 16:12:26,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24387955] [2020-12-03 16:12:26,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:12:26,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:26,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:12:26,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:12:26,185 INFO L87 Difference]: Start difference. First operand 87 states and 102 transitions. Second operand 5 states. [2020-12-03 16:12:26,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:26,219 INFO L93 Difference]: Finished difference Result 109 states and 126 transitions. [2020-12-03 16:12:26,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 16:12:26,220 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-12-03 16:12:26,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:26,221 INFO L225 Difference]: With dead ends: 109 [2020-12-03 16:12:26,221 INFO L226 Difference]: Without dead ends: 91 [2020-12-03 16:12:26,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:12:26,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-12-03 16:12:26,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2020-12-03 16:12:26,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-03 16:12:26,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-12-03 16:12:26,235 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 20 [2020-12-03 16:12:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:26,236 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-12-03 16:12:26,236 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:12:26,236 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-12-03 16:12:26,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-03 16:12:26,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:26,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:26,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:26,450 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:26,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:26,452 INFO L82 PathProgramCache]: Analyzing trace with hash 1017079379, now seen corresponding path program 1 times [2020-12-03 16:12:26,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:26,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145993933] [2020-12-03 16:12:26,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:26,474 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:26,475 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [720234857] [2020-12-03 16:12:26,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:26,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-03 16:12:26,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:26,720 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:26,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145993933] [2020-12-03 16:12:26,721 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:26,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [720234857] [2020-12-03 16:12:26,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:12:26,722 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-03 16:12:26,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567941630] [2020-12-03 16:12:26,722 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:12:26,722 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:26,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:12:26,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:12:26,723 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 8 states. [2020-12-03 16:12:26,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:26,947 INFO L93 Difference]: Finished difference Result 133 states and 151 transitions. [2020-12-03 16:12:26,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-03 16:12:26,948 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-12-03 16:12:26,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:26,949 INFO L225 Difference]: With dead ends: 133 [2020-12-03 16:12:26,949 INFO L226 Difference]: Without dead ends: 131 [2020-12-03 16:12:26,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-03 16:12:26,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-03 16:12:26,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 94. [2020-12-03 16:12:26,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-12-03 16:12:26,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-12-03 16:12:26,961 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 21 [2020-12-03 16:12:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:26,961 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-12-03 16:12:26,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:12:26,961 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-12-03 16:12:26,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-03 16:12:26,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:26,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:27,174 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-03 16:12:27,175 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:27,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:27,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1159045544, now seen corresponding path program 1 times [2020-12-03 16:12:27,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:27,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265159280] [2020-12-03 16:12:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:27,192 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:27,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1757904910] [2020-12-03 16:12:27,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:27,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:27,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-03 16:12:27,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:27,434 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:27,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265159280] [2020-12-03 16:12:27,435 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:27,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757904910] [2020-12-03 16:12:27,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:12:27,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-03 16:12:27,436 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021043035] [2020-12-03 16:12:27,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:12:27,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:27,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:12:27,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:12:27,437 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 8 states. [2020-12-03 16:12:27,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:27,686 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2020-12-03 16:12:27,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-03 16:12:27,687 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-12-03 16:12:27,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:27,688 INFO L225 Difference]: With dead ends: 148 [2020-12-03 16:12:27,688 INFO L226 Difference]: Without dead ends: 136 [2020-12-03 16:12:27,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-03 16:12:27,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-12-03 16:12:27,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 120. [2020-12-03 16:12:27,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-03 16:12:27,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 143 transitions. [2020-12-03 16:12:27,703 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 143 transitions. Word has length 23 [2020-12-03 16:12:27,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:27,704 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 143 transitions. [2020-12-03 16:12:27,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:12:27,704 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 143 transitions. [2020-12-03 16:12:27,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-03 16:12:27,705 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:27,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:27,920 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:27,921 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:27,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:27,922 INFO L82 PathProgramCache]: Analyzing trace with hash -559475920, now seen corresponding path program 1 times [2020-12-03 16:12:27,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:27,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69186253] [2020-12-03 16:12:27,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:27,934 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:27,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791058321] [2020-12-03 16:12:27,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:28,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:12:28,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 16:12:28,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:12:28,085 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:12:28,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69186253] [2020-12-03 16:12:28,085 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:12:28,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791058321] [2020-12-03 16:12:28,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:12:28,086 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-03 16:12:28,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880380941] [2020-12-03 16:12:28,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 16:12:28,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:12:28,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 16:12:28,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:12:28,087 INFO L87 Difference]: Start difference. First operand 120 states and 143 transitions. Second operand 6 states. [2020-12-03 16:12:28,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:28,124 INFO L93 Difference]: Finished difference Result 164 states and 196 transitions. [2020-12-03 16:12:28,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 16:12:28,125 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-12-03 16:12:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:28,126 INFO L225 Difference]: With dead ends: 164 [2020-12-03 16:12:28,126 INFO L226 Difference]: Without dead ends: 73 [2020-12-03 16:12:28,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:12:28,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-03 16:12:28,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-12-03 16:12:28,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-12-03 16:12:28,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2020-12-03 16:12:28,138 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 28 [2020-12-03 16:12:28,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:28,138 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2020-12-03 16:12:28,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 16:12:28,138 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2020-12-03 16:12:28,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-03 16:12:28,139 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:28,139 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:28,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:28,352 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:28,354 INFO L82 PathProgramCache]: Analyzing trace with hash -221158463, now seen corresponding path program 2 times [2020-12-03 16:12:28,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:28,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616613814] [2020-12-03 16:12:28,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:28,377 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:28,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [896236479] [2020-12-03 16:12:28,377 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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 [2020-12-03 16:12:28,440 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:12:28,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-03 16:12:28,440 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 16:12:28,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 16:12:28,461 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 16:12:28,534 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-03 16:12:28,534 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 16:12:28,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-03 16:12:28,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:12:28 BoogieIcfgContainer [2020-12-03 16:12:28,813 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 16:12:28,813 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 16:12:28,813 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 16:12:28,814 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 16:12:28,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:12:21" (3/4) ... [2020-12-03 16:12:28,816 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 16:12:28,873 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-03 16:12:28,873 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 16:12:28,876 INFO L168 Benchmark]: Toolchain (without parser) took 8727.46 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 25.0 MB in the beginning and 50.4 MB in the end (delta: -25.3 MB). Peak memory consumption was 32.9 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:28,876 INFO L168 Benchmark]: CDTParser took 0.40 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 16:12:28,877 INFO L168 Benchmark]: CACSL2BoogieTranslator took 321.60 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 26.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:28,878 INFO L168 Benchmark]: Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 48.2 MB. Free memory was 26.0 MB in the beginning and 24.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:28,878 INFO L168 Benchmark]: Boogie Preprocessor took 29.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 16:12:28,879 INFO L168 Benchmark]: RCFGBuilder took 598.32 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 27.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:28,880 INFO L168 Benchmark]: TraceAbstraction took 7663.01 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 27.6 MB in the beginning and 53.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:28,881 INFO L168 Benchmark]: Witness Printer took 60.32 ms. Allocated memory is still 104.9 MB. Free memory was 53.4 MB in the beginning and 50.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:28,885 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.40 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 63.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 321.60 ms. Allocated memory is still 48.2 MB. Free memory was 24.8 MB in the beginning and 26.0 MB in the end (delta: -1.2 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 47.22 ms. Allocated memory is still 48.2 MB. Free memory was 26.0 MB in the beginning and 24.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.20 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.2 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 598.32 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 23.1 MB in the beginning and 27.9 MB in the end (delta: -4.8 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7663.01 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 27.6 MB in the beginning and 53.4 MB in the end (delta: -25.9 MB). Peak memory consumption was 19.5 MB. Max. memory is 16.1 GB. * Witness Printer took 60.32 ms. Allocated memory is still 104.9 MB. Free memory was 53.4 MB in the beginning and 50.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] long long a, b, p, q, r, s; [L21] int x, y; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L11] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(a != b)) VAL [counter=1] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<2 [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L11] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(a != b)) VAL [counter=2] [L42] COND TRUE a > b [L43] a = a - b [L44] p = p - q [L45] r = r - s VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND FALSE !(counter++<2) [L11] COND TRUE !(cond) VAL [counter=3] [L13] reach_error() VAL [counter=3] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 7.5s, OverallIterations: 13, TraceHistogramMax: 3, AutomataDifference: 2.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 427 SDtfs, 725 SDslu, 840 SDs, 0 SdLazy, 755 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 200 GetRequests, 132 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=11, 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, 12 MinimizatonAttempts, 165 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 233 NumberOfCodeBlocks, 233 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 192 ConstructedInterpolants, 0 QuantifiedInterpolants, 24006 SizeOfPredicates, 77 NumberOfNonLiveVariables, 987 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 12 InterpolantComputations, 7 PerfectInterpolantSequences, 15/32 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...