./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 096883e9 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/hard2_unwindbound10.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 77dab7aa1785f99b41e292299a6d5b4f844b78f4 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-096883e [2020-12-01 23:21:34,448 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 23:21:34,451 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 23:21:34,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 23:21:34,489 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 23:21:34,490 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 23:21:34,492 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 23:21:34,494 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 23:21:34,497 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 23:21:34,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 23:21:34,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 23:21:34,502 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 23:21:34,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 23:21:34,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 23:21:34,511 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 23:21:34,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 23:21:34,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 23:21:34,518 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 23:21:34,526 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 23:21:34,533 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 23:21:34,535 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 23:21:34,539 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 23:21:34,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 23:21:34,544 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 23:21:34,553 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 23:21:34,554 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 23:21:34,554 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 23:21:34,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 23:21:34,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 23:21:34,558 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 23:21:34,558 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 23:21:34,559 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 23:21:34,561 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 23:21:34,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 23:21:34,567 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 23:21:34,567 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 23:21:34,578 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 23:21:34,578 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 23:21:34,579 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 23:21:34,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 23:21:34,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 23:21:34,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 23:21:34,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 23:21:34,640 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 23:21:34,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 23:21:34,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 23:21:34,642 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 23:21:34,643 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 23:21:34,643 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 23:21:34,643 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 23:21:34,643 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 23:21:34,643 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 23:21:34,644 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 23:21:34,644 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 23:21:34,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 23:21:34,646 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 23:21:34,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 23:21:34,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 23:21:34,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 23:21:34,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 23:21:34,647 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 23:21:34,647 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 23:21:34,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 23:21:34,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 23:21:34,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 23:21:34,648 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 23:21:34,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 23:21:34,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 23:21:34,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 23:21:34,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 23:21:34,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 23:21:34,649 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dab7aa1785f99b41e292299a6d5b4f844b78f4 [2020-12-01 23:21:35,088 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 23:21:35,127 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 23:21:35,130 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 23:21:35,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 23:21:35,134 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 23:21:35,136 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-01 23:21:35,213 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93556d775/76c416d2e9cb49f9adee78ece0564542/FLAG69cb5a976 [2020-12-01 23:21:35,827 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 23:21:35,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-01 23:21:35,835 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93556d775/76c416d2e9cb49f9adee78ece0564542/FLAG69cb5a976 [2020-12-01 23:21:36,201 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/93556d775/76c416d2e9cb49f9adee78ece0564542 [2020-12-01 23:21:36,207 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 23:21:36,210 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 23:21:36,214 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:36,215 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 23:21:36,219 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 23:21:36,220 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,225 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f7a1ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36, skipping insertion in model container [2020-12-01 23:21:36,225 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,234 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 23:21:36,256 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 23:21:36,407 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/hard2_unwindbound10.c[526,539] [2020-12-01 23:21:36,426 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:36,438 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 23:21:36,453 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/hard2_unwindbound10.c[526,539] [2020-12-01 23:21:36,461 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 23:21:36,480 INFO L208 MainTranslator]: Completed translation [2020-12-01 23:21:36,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36 WrapperNode [2020-12-01 23:21:36,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 23:21:36,483 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:36,483 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 23:21:36,483 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 23:21:36,493 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 23:21:36,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 23:21:36,533 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 23:21:36,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 23:21:36,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,546 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,547 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,557 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (1/1) ... [2020-12-01 23:21:36,562 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 23:21:36,563 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 23:21:36,564 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 23:21:36,564 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 23:21:36,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (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 [2020-12-01 23:21:36,685 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 23:21:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 23:21:36,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 23:21:36,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 23:21:37,220 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 23:21:37,220 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-01 23:21:37,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:37 BoogieIcfgContainer [2020-12-01 23:21:37,222 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 23:21:37,224 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 23:21:37,224 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 23:21:37,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 23:21:37,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 11:21:36" (1/3) ... [2020-12-01 23:21:37,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7388945d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:37, skipping insertion in model container [2020-12-01 23:21:37,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 11:21:36" (2/3) ... [2020-12-01 23:21:37,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7388945d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 11:21:37, skipping insertion in model container [2020-12-01 23:21:37,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:37" (3/3) ... [2020-12-01 23:21:37,231 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound10.c [2020-12-01 23:21:37,258 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 23:21:37,261 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-01 23:21:37,274 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-01 23:21:37,304 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 23:21:37,304 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 23:21:37,304 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 23:21:37,304 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 23:21:37,305 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 23:21:37,305 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 23:21:37,305 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 23:21:37,305 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 23:21:37,324 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-01 23:21:37,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-01 23:21:37,334 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:37,335 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-01 23:21:37,335 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]=== [2020-12-01 23:21:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:37,343 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-01 23:21:37,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:37,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297624770] [2020-12-01 23:21:37,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:37,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:37,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297624770] [2020-12-01 23:21:37,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:37,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 23:21:37,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565560468] [2020-12-01 23:21:37,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 23:21:37,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:37,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 23:21:37,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:21:37,612 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-01 23:21:37,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:37,737 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-01 23:21:37,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:21:37,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-01 23:21:37,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:37,750 INFO L225 Difference]: With dead ends: 102 [2020-12-01 23:21:37,750 INFO L226 Difference]: Without dead ends: 57 [2020-12-01 23:21:37,754 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:37,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-01 23:21:37,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-01 23:21:37,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 23:21:37,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-01 23:21:37,797 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-01 23:21:37,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:37,797 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-01 23:21:37,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 23:21:37,797 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-01 23:21:37,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:21:37,798 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:37,798 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:37,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 23:21:37,799 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]=== [2020-12-01 23:21:37,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:37,800 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-01 23:21:37,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:37,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723619407] [2020-12-01 23:21:37,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:37,824 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:37,825 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1411574733] [2020-12-01 23:21:37,825 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 [2020-12-01 23:21:37,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:37,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 23:21:37,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:37,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:37,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723619407] [2020-12-01 23:21:37,947 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:37,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411574733] [2020-12-01 23:21:37,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:37,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 23:21:37,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258297634] [2020-12-01 23:21:37,950 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 23:21:37,950 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:37,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 23:21:37,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:21:37,951 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-01 23:21:37,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:37,970 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-01 23:21:37,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 23:21:37,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 23:21:37,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:37,973 INFO L225 Difference]: With dead ends: 54 [2020-12-01 23:21:37,973 INFO L226 Difference]: Without dead ends: 35 [2020-12-01 23:21:37,974 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:21:37,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-01 23:21:37,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-01 23:21:37,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-01 23:21:37,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-01 23:21:37,983 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-01 23:21:37,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:37,984 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-01 23:21:37,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 23:21:37,984 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-01 23:21:37,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-01 23:21:37,984 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:37,985 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:38,198 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-01 23:21:38,199 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]=== [2020-12-01 23:21:38,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:38,200 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-01 23:21:38,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:38,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759558398] [2020-12-01 23:21:38,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:38,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:38,249 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759558398] [2020-12-01 23:21:38,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:38,250 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 23:21:38,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454265930] [2020-12-01 23:21:38,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 23:21:38,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:38,252 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 23:21:38,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 23:21:38,252 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-01 23:21:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:38,322 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-01 23:21:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:21:38,323 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-01 23:21:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:38,324 INFO L225 Difference]: With dead ends: 54 [2020-12-01 23:21:38,324 INFO L226 Difference]: Without dead ends: 52 [2020-12-01 23:21:38,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:38,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-01 23:21:38,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-01 23:21:38,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-01 23:21:38,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-01 23:21:38,343 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-01 23:21:38,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:38,343 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-01 23:21:38,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 23:21:38,344 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-01 23:21:38,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-01 23:21:38,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:38,346 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:38,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 23:21:38,347 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]=== [2020-12-01 23:21:38,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:38,348 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-01 23:21:38,349 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:38,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1293619845] [2020-12-01 23:21:38,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:38,389 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:38,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [478850434] [2020-12-01 23:21:38,390 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 [2020-12-01 23:21:38,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:38,462 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 23:21:38,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:38,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:38,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1293619845] [2020-12-01 23:21:38,525 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:38,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [478850434] [2020-12-01 23:21:38,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:38,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-01 23:21:38,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721592910] [2020-12-01 23:21:38,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:21:38,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:38,528 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:21:38,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:21:38,528 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-01 23:21:38,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:38,640 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-01 23:21:38,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:21:38,640 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-01 23:21:38,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:38,642 INFO L225 Difference]: With dead ends: 79 [2020-12-01 23:21:38,643 INFO L226 Difference]: Without dead ends: 56 [2020-12-01 23:21:38,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:38,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-01 23:21:38,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-01 23:21:38,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-01 23:21:38,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-01 23:21:38,657 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-01 23:21:38,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:38,657 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-01 23:21:38,657 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:21:38,657 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-01 23:21:38,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-01 23:21:38,658 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:38,658 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:38,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:38,873 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]=== [2020-12-01 23:21:38,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:38,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-01 23:21:38,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:38,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125202756] [2020-12-01 23:21:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:38,899 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:38,906 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912564069] [2020-12-01 23:21:38,906 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 [2020-12-01 23:21:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:38,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 23:21:38,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:39,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:39,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125202756] [2020-12-01 23:21:39,045 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:39,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912564069] [2020-12-01 23:21:39,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:39,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 23:21:39,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164388958] [2020-12-01 23:21:39,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:21:39,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:39,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:21:39,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:39,049 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-01 23:21:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:39,119 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-01 23:21:39,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-01 23:21:39,123 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-01 23:21:39,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:39,125 INFO L225 Difference]: With dead ends: 66 [2020-12-01 23:21:39,125 INFO L226 Difference]: Without dead ends: 54 [2020-12-01 23:21:39,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:39,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-01 23:21:39,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-01 23:21:39,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-01 23:21:39,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-01 23:21:39,142 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-01 23:21:39,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:39,142 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-01 23:21:39,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:21:39,142 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-01 23:21:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 23:21:39,146 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:39,146 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:39,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:39,361 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]=== [2020-12-01 23:21:39,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:39,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-01 23:21:39,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:39,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511452727] [2020-12-01 23:21:39,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:39,376 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:39,377 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1189006168] [2020-12-01 23:21:39,377 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 [2020-12-01 23:21:39,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:39,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-01 23:21:39,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:39,500 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:39,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511452727] [2020-12-01 23:21:39,501 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:39,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1189006168] [2020-12-01 23:21:39,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:39,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-01 23:21:39,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116223124] [2020-12-01 23:21:39,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:21:39,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:39,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:21:39,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:39,510 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-01 23:21:39,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:39,547 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-01 23:21:39,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:21:39,547 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-01 23:21:39,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:39,550 INFO L225 Difference]: With dead ends: 78 [2020-12-01 23:21:39,550 INFO L226 Difference]: Without dead ends: 50 [2020-12-01 23:21:39,554 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:21:39,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-01 23:21:39,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-01 23:21:39,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-01 23:21:39,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-01 23:21:39,575 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-01 23:21:39,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:39,575 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-01 23:21:39,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:21:39,576 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-01 23:21:39,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-01 23:21:39,578 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:39,578 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:39,791 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:39,792 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]=== [2020-12-01 23:21:39,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:39,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-01 23:21:39,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:39,794 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558574010] [2020-12-01 23:21:39,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:39,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:39,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804673795] [2020-12-01 23:21:39,806 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 [2020-12-01 23:21:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:39,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 23:21:39,864 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:39,948 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558574010] [2020-12-01 23:21:39,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:39,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804673795] [2020-12-01 23:21:39,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:39,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 23:21:39,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769704790] [2020-12-01 23:21:39,951 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:21:39,951 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:39,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:21:39,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:39,952 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-01 23:21:40,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:40,127 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-01 23:21:40,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 23:21:40,128 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-01 23:21:40,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:40,129 INFO L225 Difference]: With dead ends: 117 [2020-12-01 23:21:40,129 INFO L226 Difference]: Without dead ends: 77 [2020-12-01 23:21:40,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:21:40,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-01 23:21:40,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-01 23:21:40,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-01 23:21:40,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-01 23:21:40,140 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-01 23:21:40,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:40,141 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-01 23:21:40,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:21:40,141 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-01 23:21:40,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-01 23:21:40,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:40,142 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:40,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-01 23:21:40,356 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]=== [2020-12-01 23:21:40,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:40,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-01 23:21:40,357 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:40,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615713892] [2020-12-01 23:21:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:40,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:40,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213800698] [2020-12-01 23:21:40,371 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 [2020-12-01 23:21:40,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:40,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 23:21:40,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:40,525 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:40,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615713892] [2020-12-01 23:21:40,525 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:40,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213800698] [2020-12-01 23:21:40,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:40,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 23:21:40,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064461011] [2020-12-01 23:21:40,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:21:40,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:40,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:21:40,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:21:40,530 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-01 23:21:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:40,554 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-01 23:21:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:21:40,555 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-01 23:21:40,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:40,558 INFO L225 Difference]: With dead ends: 70 [2020-12-01 23:21:40,559 INFO L226 Difference]: Without dead ends: 64 [2020-12-01 23:21:40,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:21:40,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-01 23:21:40,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-01 23:21:40,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-01 23:21:40,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-01 23:21:40,567 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-01 23:21:40,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:40,568 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-01 23:21:40,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:21:40,568 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-01 23:21:40,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 23:21:40,569 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:40,570 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:40,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:40,785 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]=== [2020-12-01 23:21:40,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:40,786 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-01 23:21:40,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:40,787 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181415268] [2020-12-01 23:21:40,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:40,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:40,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051255155] [2020-12-01 23:21:40,800 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 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 [2020-12-01 23:21:40,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 23:21:40,841 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:40,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-01 23:21:40,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:40,885 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-01 23:21:40,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181415268] [2020-12-01 23:21:40,886 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:40,886 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051255155] [2020-12-01 23:21:40,886 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 23:21:40,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-01 23:21:40,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235382804] [2020-12-01 23:21:40,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:21:40,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:21:40,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:40,888 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-01 23:21:40,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:40,923 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-01 23:21:40,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:21:40,924 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-01 23:21:40,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:40,925 INFO L225 Difference]: With dead ends: 99 [2020-12-01 23:21:40,925 INFO L226 Difference]: Without dead ends: 71 [2020-12-01 23:21:40,925 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:21:40,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-01 23:21:40,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-01 23:21:40,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-01 23:21:40,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-01 23:21:40,932 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-01 23:21:40,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:40,933 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-01 23:21:40,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:21:40,933 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-01 23:21:40,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 23:21:40,934 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:40,934 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-01 23:21:41,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:41,148 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]=== [2020-12-01 23:21:41,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:41,149 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-01 23:21:41,149 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:41,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435409460] [2020-12-01 23:21:41,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:41,164 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:41,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1130042929] [2020-12-01 23:21:41,165 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 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 [2020-12-01 23:21:41,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 23:21:41,243 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:41,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-01 23:21:41,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:41,463 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:41,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435409460] [2020-12-01 23:21:41,464 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:41,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130042929] [2020-12-01 23:21:41,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:41,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:21:41,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [758491224] [2020-12-01 23:21:41,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:21:41,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:41,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:21:41,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:41,469 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-01 23:21:41,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:41,716 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-01 23:21:41,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 23:21:41,717 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-01 23:21:41,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:41,718 INFO L225 Difference]: With dead ends: 138 [2020-12-01 23:21:41,718 INFO L226 Difference]: Without dead ends: 124 [2020-12-01 23:21:41,719 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:41,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-01 23:21:41,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-01 23:21:41,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-01 23:21:41,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-01 23:21:41,729 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-01 23:21:41,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:41,729 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-01 23:21:41,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:21:41,729 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-01 23:21:41,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 23:21:41,730 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:41,730 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:41,945 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-01 23:21:41,946 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]=== [2020-12-01 23:21:41,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:41,947 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-01 23:21:41,947 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:41,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622675809] [2020-12-01 23:21:41,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:41,959 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:41,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [800015851] [2020-12-01 23:21:41,959 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 [2020-12-01 23:21:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:42,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-01 23:21:42,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:42,078 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:42,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622675809] [2020-12-01 23:21:42,079 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:42,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800015851] [2020-12-01 23:21:42,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:42,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 23:21:42,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491295472] [2020-12-01 23:21:42,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-01 23:21:42,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:42,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-01 23:21:42,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-01 23:21:42,082 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-01 23:21:42,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:42,127 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-01 23:21:42,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:21:42,128 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-01 23:21:42,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:42,129 INFO L225 Difference]: With dead ends: 100 [2020-12-01 23:21:42,130 INFO L226 Difference]: Without dead ends: 92 [2020-12-01 23:21:42,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:42,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-01 23:21:42,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-01 23:21:42,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-01 23:21:42,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-01 23:21:42,139 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-01 23:21:42,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:42,139 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-01 23:21:42,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-01 23:21:42,140 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-01 23:21:42,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 23:21:42,141 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:42,141 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:42,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:42,357 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]=== [2020-12-01 23:21:42,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:42,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-01 23:21:42,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:42,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096277873] [2020-12-01 23:21:42,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:42,369 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:42,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [234779853] [2020-12-01 23:21:42,370 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 [2020-12-01 23:21:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:42,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-01 23:21:42,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:42,601 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:42,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096277873] [2020-12-01 23:21:42,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:42,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234779853] [2020-12-01 23:21:42,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:42,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 23:21:42,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608601259] [2020-12-01 23:21:42,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:21:42,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:42,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:21:42,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:42,604 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-01 23:21:42,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:42,779 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-01 23:21:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:21:42,779 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-01 23:21:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:42,781 INFO L225 Difference]: With dead ends: 114 [2020-12-01 23:21:42,781 INFO L226 Difference]: Without dead ends: 112 [2020-12-01 23:21:42,781 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:21:42,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-01 23:21:42,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-01 23:21:42,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 23:21:42,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-01 23:21:42,789 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-01 23:21:42,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:42,790 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-01 23:21:42,790 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:21:42,790 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-01 23:21:42,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 23:21:42,791 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:42,791 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:43,004 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:43,005 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]=== [2020-12-01 23:21:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-01 23:21:43,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:43,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954995869] [2020-12-01 23:21:43,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:43,017 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:43,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [363738571] [2020-12-01 23:21:43,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-01 23:21:43,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:43,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 23:21:43,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:43,157 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:43,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954995869] [2020-12-01 23:21:43,158 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:43,158 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [363738571] [2020-12-01 23:21:43,158 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:43,158 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 23:21:43,159 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727866382] [2020-12-01 23:21:43,159 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:21:43,159 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:43,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:21:43,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:43,160 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-01 23:21:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:43,196 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-01 23:21:43,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:21:43,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-01 23:21:43,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:43,197 INFO L225 Difference]: With dead ends: 112 [2020-12-01 23:21:43,198 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 23:21:43,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:43,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 23:21:43,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-01 23:21:43,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-01 23:21:43,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-01 23:21:43,206 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-01 23:21:43,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:43,206 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-01 23:21:43,206 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:21:43,206 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-01 23:21:43,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-01 23:21:43,207 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:43,208 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:43,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-01 23:21:43,421 INFO L429 AbstractCegarLoop]: === Iteration 14 === [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]=== [2020-12-01 23:21:43,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:43,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-01 23:21:43,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:43,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26728949] [2020-12-01 23:21:43,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:43,433 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:43,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [473163330] [2020-12-01 23:21:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:43,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:43,498 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-01 23:21:43,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:43,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26728949] [2020-12-01 23:21:43,634 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:43,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [473163330] [2020-12-01 23:21:43,634 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:43,634 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:21:43,634 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273051039] [2020-12-01 23:21:43,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:21:43,635 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:43,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:21:43,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:43,636 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-01 23:21:43,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:43,814 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-01 23:21:43,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 23:21:43,815 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-01 23:21:43,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:43,816 INFO L225 Difference]: With dead ends: 130 [2020-12-01 23:21:43,816 INFO L226 Difference]: Without dead ends: 102 [2020-12-01 23:21:43,817 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:43,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-01 23:21:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-01 23:21:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-01 23:21:43,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-01 23:21:43,824 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-01 23:21:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:43,825 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-01 23:21:43,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:21:43,825 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-01 23:21:43,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 23:21:43,826 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:43,826 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-01 23:21:44,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-01 23:21:44,041 INFO L429 AbstractCegarLoop]: === Iteration 15 === [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]=== [2020-12-01 23:21:44,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:44,042 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-01 23:21:44,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:44,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439721910] [2020-12-01 23:21:44,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:44,058 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:44,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603642844] [2020-12-01 23:21:44,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:44,124 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 23:21:44,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:44,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-01 23:21:44,129 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:44,298 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-01 23:21:44,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439721910] [2020-12-01 23:21:44,299 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:44,299 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603642844] [2020-12-01 23:21:44,300 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:44,300 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 23:21:44,300 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761123441] [2020-12-01 23:21:44,301 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 23:21:44,301 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:44,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 23:21:44,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:21:44,302 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-01 23:21:44,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:44,527 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-12-01 23:21:44,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 23:21:44,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-01 23:21:44,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:44,528 INFO L225 Difference]: With dead ends: 127 [2020-12-01 23:21:44,528 INFO L226 Difference]: Without dead ends: 117 [2020-12-01 23:21:44,529 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:44,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-01 23:21:44,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-12-01 23:21:44,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-01 23:21:44,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2020-12-01 23:21:44,542 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2020-12-01 23:21:44,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:44,542 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2020-12-01 23:21:44,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 23:21:44,543 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2020-12-01 23:21:44,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-01 23:21:44,544 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:44,544 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:44,759 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-01 23:21:44,760 INFO L429 AbstractCegarLoop]: === Iteration 16 === [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]=== [2020-12-01 23:21:44,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:44,760 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-01 23:21:44,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:44,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304179045] [2020-12-01 23:21:44,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:44,771 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:44,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [144135784] [2020-12-01 23:21:44,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:44,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:44,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-01 23:21:44,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:44,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304179045] [2020-12-01 23:21:44,955 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:44,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [144135784] [2020-12-01 23:21:44,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:44,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:21:44,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887694939] [2020-12-01 23:21:44,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:21:44,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:44,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:21:44,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:44,957 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 8 states. [2020-12-01 23:21:45,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:45,102 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-12-01 23:21:45,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-01 23:21:45,103 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-01 23:21:45,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:45,105 INFO L225 Difference]: With dead ends: 100 [2020-12-01 23:21:45,105 INFO L226 Difference]: Without dead ends: 83 [2020-12-01 23:21:45,105 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:21:45,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-01 23:21:45,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-01 23:21:45,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-01 23:21:45,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-01 23:21:45,115 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2020-12-01 23:21:45,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:45,115 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-01 23:21:45,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:21:45,116 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-01 23:21:45,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-01 23:21:45,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:45,117 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:45,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:45,331 INFO L429 AbstractCegarLoop]: === Iteration 17 === [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]=== [2020-12-01 23:21:45,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:45,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-01 23:21:45,332 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:45,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [746366871] [2020-12-01 23:21:45,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:45,342 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:45,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [493245148] [2020-12-01 23:21:45,343 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 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:45,418 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 23:21:45,418 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:45,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-01 23:21:45,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:45,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [746366871] [2020-12-01 23:21:45,512 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:45,512 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493245148] [2020-12-01 23:21:45,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:45,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-01 23:21:45,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667748085] [2020-12-01 23:21:45,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:21:45,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:45,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:21:45,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:45,515 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2020-12-01 23:21:45,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:45,567 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-12-01 23:21:45,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 23:21:45,568 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-01 23:21:45,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:45,569 INFO L225 Difference]: With dead ends: 93 [2020-12-01 23:21:45,570 INFO L226 Difference]: Without dead ends: 85 [2020-12-01 23:21:45,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:21:45,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-01 23:21:45,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-01 23:21:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-01 23:21:45,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-12-01 23:21:45,579 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2020-12-01 23:21:45,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:45,580 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-12-01 23:21:45,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:21:45,580 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-12-01 23:21:45,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 23:21:45,581 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:45,581 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:45,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-01 23:21:45,795 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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]=== [2020-12-01 23:21:45,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:45,796 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-01 23:21:45,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:45,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642984775] [2020-12-01 23:21:45,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:45,806 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:45,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [935381193] [2020-12-01 23:21:45,807 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:45,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 23:21:45,867 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:45,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-01 23:21:45,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:46,028 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:46,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642984775] [2020-12-01 23:21:46,029 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:46,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [935381193] [2020-12-01 23:21:46,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:46,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:21:46,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060697256] [2020-12-01 23:21:46,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:21:46,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:46,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:21:46,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:46,032 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-12-01 23:21:46,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:46,332 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-12-01 23:21:46,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-01 23:21:46,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-01 23:21:46,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:46,334 INFO L225 Difference]: With dead ends: 157 [2020-12-01 23:21:46,334 INFO L226 Difference]: Without dead ends: 119 [2020-12-01 23:21:46,335 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:46,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-01 23:21:46,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-01 23:21:46,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-01 23:21:46,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-01 23:21:46,344 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2020-12-01 23:21:46,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:46,345 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-01 23:21:46,345 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:21:46,345 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-01 23:21:46,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-01 23:21:46,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:46,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:46,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-01 23:21:46,560 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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]=== [2020-12-01 23:21:46,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:46,561 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-01 23:21:46,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:46,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104511817] [2020-12-01 23:21:46,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:46,570 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:46,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [181848019] [2020-12-01 23:21:46,571 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 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:46,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 23:21:46,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:46,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 23:21:46,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:46,722 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:46,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104511817] [2020-12-01 23:21:46,723 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:46,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181848019] [2020-12-01 23:21:46,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:46,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 23:21:46,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582308402] [2020-12-01 23:21:46,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:21:46,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:46,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:21:46,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:46,726 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2020-12-01 23:21:46,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:46,770 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-01 23:21:46,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 23:21:46,771 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-01 23:21:46,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:46,772 INFO L225 Difference]: With dead ends: 118 [2020-12-01 23:21:46,772 INFO L226 Difference]: Without dead ends: 108 [2020-12-01 23:21:46,773 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:21:46,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-01 23:21:46,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-01 23:21:46,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-01 23:21:46,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-12-01 23:21:46,782 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2020-12-01 23:21:46,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:46,782 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-12-01 23:21:46,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:21:46,783 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-12-01 23:21:46,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-01 23:21:46,784 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:46,784 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:46,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:46,999 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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]=== [2020-12-01 23:21:47,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:47,000 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-01 23:21:47,000 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:47,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342355457] [2020-12-01 23:21:47,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:47,010 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:47,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1766244460] [2020-12-01 23:21:47,011 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:47,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-01 23:21:47,091 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:47,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 23:21:47,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:47,178 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:47,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342355457] [2020-12-01 23:21:47,179 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:47,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766244460] [2020-12-01 23:21:47,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:47,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 23:21:47,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845322440] [2020-12-01 23:21:47,180 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-01 23:21:47,181 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:47,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-01 23:21:47,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-01 23:21:47,182 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-12-01 23:21:47,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:47,246 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-01 23:21:47,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 23:21:47,247 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-01 23:21:47,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:47,248 INFO L225 Difference]: With dead ends: 117 [2020-12-01 23:21:47,248 INFO L226 Difference]: Without dead ends: 109 [2020-12-01 23:21:47,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-12-01 23:21:47,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-01 23:21:47,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-01 23:21:47,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-01 23:21:47,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-12-01 23:21:47,258 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2020-12-01 23:21:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:47,259 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-12-01 23:21:47,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-01 23:21:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-12-01 23:21:47,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-01 23:21:47,260 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:47,260 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-01 23:21:47,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:47,474 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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]=== [2020-12-01 23:21:47,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:47,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-01 23:21:47,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:47,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567159619] [2020-12-01 23:21:47,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:47,483 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:47,483 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [447184082] [2020-12-01 23:21:47,483 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:47,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-01 23:21:47,557 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:47,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-01 23:21:47,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:47,734 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-01 23:21:47,760 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:21:47,787 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-01 23:21:47,818 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 23:21:47,820 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 23:21:47,829 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:21:47,838 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 23:21:47,841 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:21:47,855 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:21:47,863 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-01 23:21:47,872 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 23:21:47,874 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 23:21:47,880 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:21:47,888 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-01 23:21:47,892 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-01 23:21:48,353 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-01 23:21:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567159619] [2020-12-01 23:21:48,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:48,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447184082] [2020-12-01 23:21:48,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:48,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 23:21:48,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030622997] [2020-12-01 23:21:48,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 23:21:48,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:48,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 23:21:48,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:21:48,357 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 10 states. [2020-12-01 23:21:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:48,592 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-12-01 23:21:48,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-01 23:21:48,592 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-01 23:21:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:48,593 INFO L225 Difference]: With dead ends: 113 [2020-12-01 23:21:48,594 INFO L226 Difference]: Without dead ends: 109 [2020-12-01 23:21:48,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-12-01 23:21:48,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-01 23:21:48,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-01 23:21:48,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-01 23:21:48,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-01 23:21:48,607 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-01 23:21:48,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:48,607 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-01 23:21:48,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 23:21:48,608 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-01 23:21:48,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 23:21:48,608 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:48,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:48,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:48,821 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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]=== [2020-12-01 23:21:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:48,822 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-01 23:21:48,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:48,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984999389] [2020-12-01 23:21:48,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:48,830 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:48,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318358809] [2020-12-01 23:21:48,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:48,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-01 23:21:48,917 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:48,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 23:21:48,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:49,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984999389] [2020-12-01 23:21:49,045 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:49,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318358809] [2020-12-01 23:21:49,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:49,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:21:49,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109442424] [2020-12-01 23:21:49,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 23:21:49,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:49,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 23:21:49,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:21:49,049 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2020-12-01 23:21:49,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:49,116 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-12-01 23:21:49,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-01 23:21:49,116 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-01 23:21:49,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:49,118 INFO L225 Difference]: With dead ends: 127 [2020-12-01 23:21:49,118 INFO L226 Difference]: Without dead ends: 117 [2020-12-01 23:21:49,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-01 23:21:49,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-01 23:21:49,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-01 23:21:49,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-12-01 23:21:49,131 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2020-12-01 23:21:49,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:49,131 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-12-01 23:21:49,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 23:21:49,132 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-12-01 23:21:49,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-01 23:21:49,132 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:49,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:49,345 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-01 23:21:49,346 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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]=== [2020-12-01 23:21:49,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:49,347 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2020-12-01 23:21:49,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:49,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027004883] [2020-12-01 23:21:49,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:49,356 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:49,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [766917177] [2020-12-01 23:21:49,357 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 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:49,407 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 23:21:49,407 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:49,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-01 23:21:49,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:49,598 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-01 23:21:49,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027004883] [2020-12-01 23:21:49,599 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:49,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [766917177] [2020-12-01 23:21:49,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:49,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 23:21:49,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433470280] [2020-12-01 23:21:49,600 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 23:21:49,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:49,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 23:21:49,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:49,603 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2020-12-01 23:21:50,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:50,019 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-12-01 23:21:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-01 23:21:50,020 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-01 23:21:50,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:50,021 INFO L225 Difference]: With dead ends: 132 [2020-12-01 23:21:50,021 INFO L226 Difference]: Without dead ends: 120 [2020-12-01 23:21:50,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=209, Unknown=0, NotChecked=0, Total=306 [2020-12-01 23:21:50,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-01 23:21:50,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-01 23:21:50,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-01 23:21:50,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-01 23:21:50,034 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2020-12-01 23:21:50,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:50,035 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-01 23:21:50,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 23:21:50,035 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-01 23:21:50,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 23:21:50,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:50,036 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:50,249 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-01 23:21:50,250 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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]=== [2020-12-01 23:21:50,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:50,251 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2020-12-01 23:21:50,251 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:50,251 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100745408] [2020-12-01 23:21:50,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:50,258 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:50,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [416998024] [2020-12-01 23:21:50,259 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:50,323 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 23:21:50,323 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:50,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-01 23:21:50,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:50,445 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:50,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100745408] [2020-12-01 23:21:50,446 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:50,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [416998024] [2020-12-01 23:21:50,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:50,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-01 23:21:50,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642679460] [2020-12-01 23:21:50,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-01 23:21:50,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:50,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-01 23:21:50,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-01 23:21:50,448 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2020-12-01 23:21:50,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:50,552 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-01 23:21:50,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-01 23:21:50,553 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-01 23:21:50,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:50,554 INFO L225 Difference]: With dead ends: 118 [2020-12-01 23:21:50,554 INFO L226 Difference]: Without dead ends: 110 [2020-12-01 23:21:50,558 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-12-01 23:21:50,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-01 23:21:50,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-01 23:21:50,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-01 23:21:50,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-12-01 23:21:50,574 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2020-12-01 23:21:50,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:50,574 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-12-01 23:21:50,574 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-01 23:21:50,574 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-12-01 23:21:50,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-01 23:21:50,575 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:50,575 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:50,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:50,789 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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]=== [2020-12-01 23:21:50,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:50,789 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2020-12-01 23:21:50,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:50,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [847655394] [2020-12-01 23:21:50,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:50,802 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:50,806 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296194131] [2020-12-01 23:21:50,807 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:50,900 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 23:21:50,900 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:50,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 23:21:50,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:51,028 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:51,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [847655394] [2020-12-01 23:21:51,029 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:51,029 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296194131] [2020-12-01 23:21:51,029 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:51,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 23:21:51,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908266066] [2020-12-01 23:21:51,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 23:21:51,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:51,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 23:21:51,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:21:51,031 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2020-12-01 23:21:51,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:51,122 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-01 23:21:51,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-01 23:21:51,122 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-01 23:21:51,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:51,124 INFO L225 Difference]: With dead ends: 141 [2020-12-01 23:21:51,124 INFO L226 Difference]: Without dead ends: 131 [2020-12-01 23:21:51,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-12-01 23:21:51,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-01 23:21:51,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-12-01 23:21:51,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-01 23:21:51,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-12-01 23:21:51,140 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2020-12-01 23:21:51,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:51,140 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-12-01 23:21:51,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 23:21:51,141 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-12-01 23:21:51,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-01 23:21:51,142 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:51,142 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:51,356 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-01 23:21:51,357 INFO L429 AbstractCegarLoop]: === Iteration 26 === [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]=== [2020-12-01 23:21:51,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:51,357 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2020-12-01 23:21:51,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:51,358 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51780116] [2020-12-01 23:21:51,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:51,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:51,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329584925] [2020-12-01 23:21:51,365 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:51,444 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-01 23:21:51,444 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:51,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-01 23:21:51,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:51,554 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:51,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51780116] [2020-12-01 23:21:51,555 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:51,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329584925] [2020-12-01 23:21:51,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:51,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-01 23:21:51,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746395006] [2020-12-01 23:21:51,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-01 23:21:51,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:51,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-01 23:21:51,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-01 23:21:51,557 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2020-12-01 23:21:51,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:51,658 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2020-12-01 23:21:51,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-01 23:21:51,659 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-01 23:21:51,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:51,660 INFO L225 Difference]: With dead ends: 140 [2020-12-01 23:21:51,660 INFO L226 Difference]: Without dead ends: 132 [2020-12-01 23:21:51,660 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=92, Invalid=148, Unknown=0, NotChecked=0, Total=240 [2020-12-01 23:21:51,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-01 23:21:51,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-01 23:21:51,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-01 23:21:51,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-01 23:21:51,674 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2020-12-01 23:21:51,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:51,675 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-01 23:21:51,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-01 23:21:51,675 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-01 23:21:51,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-01 23:21:51,676 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:51,676 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:51,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:51,890 INFO L429 AbstractCegarLoop]: === Iteration 27 === [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]=== [2020-12-01 23:21:51,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:51,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2020-12-01 23:21:51,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:51,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697171379] [2020-12-01 23:21:51,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:51,899 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:51,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1487390013] [2020-12-01 23:21:51,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:52,048 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-01 23:21:52,049 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:52,051 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-01 23:21:52,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:52,173 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:52,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697171379] [2020-12-01 23:21:52,174 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:52,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1487390013] [2020-12-01 23:21:52,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:52,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-01 23:21:52,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260196887] [2020-12-01 23:21:52,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-01 23:21:52,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:52,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-01 23:21:52,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-01 23:21:52,176 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2020-12-01 23:21:52,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:52,271 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2020-12-01 23:21:52,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-01 23:21:52,271 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-01 23:21:52,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:52,273 INFO L225 Difference]: With dead ends: 163 [2020-12-01 23:21:52,273 INFO L226 Difference]: Without dead ends: 153 [2020-12-01 23:21:52,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=75, Invalid=135, Unknown=0, NotChecked=0, Total=210 [2020-12-01 23:21:52,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-01 23:21:52,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-01 23:21:52,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-01 23:21:52,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-12-01 23:21:52,288 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2020-12-01 23:21:52,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:52,289 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-12-01 23:21:52,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-01 23:21:52,289 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-12-01 23:21:52,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-01 23:21:52,290 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:52,290 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:52,504 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-01 23:21:52,505 INFO L429 AbstractCegarLoop]: === Iteration 28 === [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]=== [2020-12-01 23:21:52,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:52,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2020-12-01 23:21:52,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:52,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486508937] [2020-12-01 23:21:52,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:52,515 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:52,515 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880135344] [2020-12-01 23:21:52,516 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:52,616 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-01 23:21:52,616 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:52,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 23:21:52,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:52,775 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:52,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486508937] [2020-12-01 23:21:52,777 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:52,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880135344] [2020-12-01 23:21:52,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:52,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-01 23:21:52,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511288795] [2020-12-01 23:21:52,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-01 23:21:52,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:52,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-01 23:21:52,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-01 23:21:52,779 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2020-12-01 23:21:52,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:52,904 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2020-12-01 23:21:52,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-01 23:21:52,905 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-01 23:21:52,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:52,906 INFO L225 Difference]: With dead ends: 187 [2020-12-01 23:21:52,906 INFO L226 Difference]: Without dead ends: 175 [2020-12-01 23:21:52,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=175, Unknown=0, NotChecked=0, Total=272 [2020-12-01 23:21:52,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-01 23:21:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-01 23:21:52,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-01 23:21:52,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2020-12-01 23:21:52,924 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2020-12-01 23:21:52,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:52,925 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2020-12-01 23:21:52,925 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-01 23:21:52,925 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2020-12-01 23:21:52,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-01 23:21:52,926 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:52,926 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:53,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-01 23:21:53,141 INFO L429 AbstractCegarLoop]: === Iteration 29 === [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]=== [2020-12-01 23:21:53,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:53,142 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2020-12-01 23:21:53,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:53,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601255523] [2020-12-01 23:21:53,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:53,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:53,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1910321491] [2020-12-01 23:21:53,152 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:53,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 23:21:53,246 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 23:21:53,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:53,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601255523] [2020-12-01 23:21:53,408 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:53,408 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1910321491] [2020-12-01 23:21:53,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:53,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-01 23:21:53,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653382807] [2020-12-01 23:21:53,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 23:21:53,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:53,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 23:21:53,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-01 23:21:53,410 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2020-12-01 23:21:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:53,553 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-12-01 23:21:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-01 23:21:53,553 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-01 23:21:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:53,555 INFO L225 Difference]: With dead ends: 209 [2020-12-01 23:21:53,555 INFO L226 Difference]: Without dead ends: 197 [2020-12-01 23:21:53,556 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=220, Unknown=0, NotChecked=0, Total=342 [2020-12-01 23:21:53,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-01 23:21:53,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-12-01 23:21:53,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-01 23:21:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2020-12-01 23:21:53,575 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2020-12-01 23:21:53,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:53,575 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2020-12-01 23:21:53,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 23:21:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2020-12-01 23:21:53,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-01 23:21:53,577 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:53,577 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:53,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-01 23:21:53,791 INFO L429 AbstractCegarLoop]: === Iteration 30 === [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]=== [2020-12-01 23:21:53,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:53,792 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2020-12-01 23:21:53,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:53,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036062097] [2020-12-01 23:21:53,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:53,799 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:53,799 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [770459572] [2020-12-01 23:21:53,799 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 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:53,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-01 23:21:53,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:53,908 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-01 23:21:53,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:53,992 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 88 proven. 43 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-12-01 23:21:53,992 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036062097] [2020-12-01 23:21:53,992 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:53,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [770459572] [2020-12-01 23:21:53,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:53,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-01 23:21:53,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506771033] [2020-12-01 23:21:53,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-01 23:21:53,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:53,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-01 23:21:53,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:53,996 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 5 states. [2020-12-01 23:21:54,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:54,052 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2020-12-01 23:21:54,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 23:21:54,053 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-01 23:21:54,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:54,054 INFO L225 Difference]: With dead ends: 241 [2020-12-01 23:21:54,054 INFO L226 Difference]: Without dead ends: 175 [2020-12-01 23:21:54,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 23:21:54,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-01 23:21:54,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-12-01 23:21:54,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-01 23:21:54,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2020-12-01 23:21:54,074 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 80 [2020-12-01 23:21:54,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:54,074 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2020-12-01 23:21:54,074 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-01 23:21:54,074 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2020-12-01 23:21:54,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-01 23:21:54,075 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:54,076 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:54,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:54,290 INFO L429 AbstractCegarLoop]: === Iteration 31 === [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]=== [2020-12-01 23:21:54,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:54,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1453108407, now seen corresponding path program 9 times [2020-12-01 23:21:54,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:54,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247420416] [2020-12-01 23:21:54,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:54,300 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:54,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1145397109] [2020-12-01 23:21:54,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:54,619 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-01 23:21:54,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:54,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-01 23:21:54,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:54,938 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 87 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-01 23:21:54,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247420416] [2020-12-01 23:21:54,939 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:54,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1145397109] [2020-12-01 23:21:54,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:54,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-01 23:21:54,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862025671] [2020-12-01 23:21:54,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 23:21:54,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:54,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 23:21:54,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-12-01 23:21:54,941 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand 13 states. [2020-12-01 23:21:55,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:55,264 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2020-12-01 23:21:55,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-01 23:21:55,265 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-12-01 23:21:55,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:55,266 INFO L225 Difference]: With dead ends: 252 [2020-12-01 23:21:55,266 INFO L226 Difference]: Without dead ends: 161 [2020-12-01 23:21:55,268 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2020-12-01 23:21:55,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-01 23:21:55,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-12-01 23:21:55,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-01 23:21:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2020-12-01 23:21:55,285 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 81 [2020-12-01 23:21:55,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:55,285 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2020-12-01 23:21:55,286 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 23:21:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2020-12-01 23:21:55,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-01 23:21:55,287 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:55,287 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:55,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-01 23:21:55,501 INFO L429 AbstractCegarLoop]: === Iteration 32 === [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]=== [2020-12-01 23:21:55,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:55,501 INFO L82 PathProgramCache]: Analyzing trace with hash -861698128, now seen corresponding path program 10 times [2020-12-01 23:21:55,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:55,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906970386] [2020-12-01 23:21:55,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:55,510 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:55,510 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1632153859] [2020-12-01 23:21:55,510 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:56,174 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-01 23:21:56,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:56,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-01 23:21:56,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:56,277 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:56,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906970386] [2020-12-01 23:21:56,277 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:56,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632153859] [2020-12-01 23:21:56,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:56,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-01 23:21:56,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393214832] [2020-12-01 23:21:56,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-01 23:21:56,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:56,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-01 23:21:56,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:56,280 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand 7 states. [2020-12-01 23:21:56,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:56,398 INFO L93 Difference]: Finished difference Result 232 states and 257 transitions. [2020-12-01 23:21:56,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-01 23:21:56,398 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-01 23:21:56,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:56,400 INFO L225 Difference]: With dead ends: 232 [2020-12-01 23:21:56,400 INFO L226 Difference]: Without dead ends: 147 [2020-12-01 23:21:56,400 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 23:21:56,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-01 23:21:56,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-12-01 23:21:56,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-01 23:21:56,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2020-12-01 23:21:56,416 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 82 [2020-12-01 23:21:56,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:56,417 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2020-12-01 23:21:56,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-01 23:21:56,417 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2020-12-01 23:21:56,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-01 23:21:56,418 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:56,419 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:56,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:56,624 INFO L429 AbstractCegarLoop]: === Iteration 33 === [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]=== [2020-12-01 23:21:56,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:56,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1395374203, now seen corresponding path program 6 times [2020-12-01 23:21:56,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:56,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089426610] [2020-12-01 23:21:56,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:56,634 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:56,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [442769106] [2020-12-01 23:21:56,635 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:56,749 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-01 23:21:56,749 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 23:21:56,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-01 23:21:56,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 23:21:56,932 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 23:21:56,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089426610] [2020-12-01 23:21:56,934 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-01 23:21:56,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [442769106] [2020-12-01 23:21:56,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-01 23:21:56,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-01 23:21:56,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594378013] [2020-12-01 23:21:56,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-01 23:21:56,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 23:21:56,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-01 23:21:56,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-01 23:21:56,940 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 13 states. [2020-12-01 23:21:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 23:21:57,105 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2020-12-01 23:21:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-01 23:21:57,105 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-12-01 23:21:57,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 23:21:57,107 INFO L225 Difference]: With dead ends: 157 [2020-12-01 23:21:57,107 INFO L226 Difference]: Without dead ends: 149 [2020-12-01 23:21:57,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=176, Invalid=286, Unknown=0, NotChecked=0, Total=462 [2020-12-01 23:21:57,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-01 23:21:57,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-12-01 23:21:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-01 23:21:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-12-01 23:21:57,127 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 83 [2020-12-01 23:21:57,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 23:21:57,127 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-12-01 23:21:57,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-01 23:21:57,128 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-12-01 23:21:57,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-01 23:21:57,129 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 23:21:57,129 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 23:21:57,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-01 23:21:57,343 INFO L429 AbstractCegarLoop]: === Iteration 34 === [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]=== [2020-12-01 23:21:57,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 23:21:57,344 INFO L82 PathProgramCache]: Analyzing trace with hash -219254285, now seen corresponding path program 11 times [2020-12-01 23:21:57,344 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 23:21:57,344 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295426839] [2020-12-01 23:21:57,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 23:21:57,351 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-01 23:21:57,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [380310684] [2020-12-01 23:21:57,352 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 23:21:58,530 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-01 23:21:58,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-01 23:21:58,531 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:58,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 23:21:58,580 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 23:21:58,781 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 23:21:58,781 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 23:21:58,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-01 23:21:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 11:21:59 BoogieIcfgContainer [2020-12-01 23:21:59,097 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 23:21:59,098 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 23:21:59,098 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 23:21:59,098 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 23:21:59,099 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 11:21:37" (3/4) ... [2020-12-01 23:21:59,101 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 23:21:59,183 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-01 23:21:59,183 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 23:21:59,185 INFO L168 Benchmark]: Toolchain (without parser) took 22974.99 ms. Allocated memory was 46.1 MB in the beginning and 146.8 MB in the end (delta: 100.7 MB). Free memory was 24.0 MB in the beginning and 65.0 MB in the end (delta: -41.0 MB). Peak memory consumption was 62.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,186 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 26.6 MB in the beginning and 26.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:59,187 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.46 ms. Allocated memory is still 46.1 MB. Free memory was 23.9 MB in the beginning and 25.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,187 INFO L168 Benchmark]: Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 23.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,187 INFO L168 Benchmark]: Boogie Preprocessor took 29.91 ms. Allocated memory is still 46.1 MB. Free memory was 23.7 MB in the beginning and 22.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 23:21:59,188 INFO L168 Benchmark]: RCFGBuilder took 658.88 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.4 MB in the beginning and 27.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,189 INFO L168 Benchmark]: TraceAbstraction took 21873.49 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 27.5 MB in the beginning and 71.3 MB in the end (delta: -43.8 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,189 INFO L168 Benchmark]: Witness Printer took 85.79 ms. Allocated memory is still 146.8 MB. Free memory was 71.3 MB in the beginning and 65.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-01 23:21:59,192 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 46.1 MB. Free memory was 26.6 MB in the beginning and 26.5 MB in the end (delta: 69.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 267.46 ms. Allocated memory is still 46.1 MB. Free memory was 23.9 MB in the beginning and 25.3 MB in the end (delta: -1.4 MB). Peak memory consumption was 7.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 48.96 ms. Allocated memory is still 46.1 MB. Free memory was 25.3 MB in the beginning and 23.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.91 ms. Allocated memory is still 46.1 MB. Free memory was 23.7 MB in the beginning and 22.4 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 658.88 ms. Allocated memory was 46.1 MB in the beginning and 56.6 MB in the end (delta: 10.5 MB). Free memory was 22.4 MB in the beginning and 27.9 MB in the end (delta: -5.5 MB). Peak memory consumption was 5.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 21873.49 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 27.5 MB in the beginning and 71.3 MB in the end (delta: -43.8 MB). Peak memory consumption was 46.7 MB. Max. memory is 16.1 GB. * Witness Printer took 85.79 ms. Allocated memory is still 146.8 MB. Free memory was 71.3 MB in the beginning and 65.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 17]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] int A, B; [L25] int r, d, p, q; [L26] A = __VERIFIER_nondet_int() [L27] B = 1 [L29] r = A [L30] d = B [L31] p = 1 [L32] q = 0 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=1] [L34] EXPR counter++ VAL [counter=2] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=3] [L34] EXPR counter++ VAL [counter=4] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=4] [L34] EXPR counter++ VAL [counter=5] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L38] COND FALSE !(!(r >= d)) [L40] d = 2 * d [L41] p = 2 * p VAL [counter=5] [L34] EXPR counter++ VAL [counter=6] [L34] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L15] COND FALSE !(!(cond)) VAL [counter=6] [L38] COND TRUE !(r >= d) VAL [counter=6] [L44] EXPR counter++ VAL [counter=7] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=7] [L15] COND FALSE !(!(cond)) VAL [counter=7] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=7] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=7] [L44] EXPR counter++ VAL [counter=8] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=8] [L15] COND FALSE !(!(cond)) VAL [counter=8] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=8] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=8] [L44] EXPR counter++ VAL [counter=9] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=9] [L15] COND FALSE !(!(cond)) VAL [counter=9] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=9] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=9] [L44] EXPR counter++ VAL [counter=10] [L44] COND TRUE counter++<10 [L15] COND FALSE !(!(cond)) VAL [counter=10] [L15] COND FALSE !(!(cond)) VAL [counter=10] [L48] COND FALSE !(!(p != 1)) [L50] d = d / 2 [L51] p = p / 2 VAL [counter=10] [L52] COND TRUE r >= d [L53] r = r - d [L54] q = q + p VAL [counter=10] [L44] EXPR counter++ VAL [counter=11] [L44] COND FALSE !(counter++<10) [L15] COND TRUE !(cond) VAL [counter=11] [L17] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 39 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.6s, OverallIterations: 34, TraceHistogramMax: 10, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 980 SDtfs, 1536 SDslu, 3555 SDs, 0 SdLazy, 2060 SolverSat, 528 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1372 GetRequests, 1086 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=196occurred in iteration=29, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 33 MinimizatonAttempts, 195 StatesRemovedByMinimization, 21 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.1s SatisfiabilityAnalysisTime, 4.6s InterpolantComputationTime, 1404 NumberOfCodeBlocks, 1327 NumberOfCodeBlocksAsserted, 85 NumberOfCheckSat, 1288 ConstructedInterpolants, 0 QuantifiedInterpolants, 282245 SizeOfPredicates, 189 NumberOfNonLiveVariables, 5066 ConjunctsInSsa, 599 ConjunctsInUnsatCore, 33 InterpolantComputations, 6 PerfectInterpolantSequences, 326/1818 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...