./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3e5ce664 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 ../../../trunk/examples/svcomp/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 0.2.0-3e5ce66 [2020-12-02 21:38:20,455 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-02 21:38:20,458 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-02 21:38:20,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-02 21:38:20,500 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-02 21:38:20,501 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-02 21:38:20,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-02 21:38:20,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-02 21:38:20,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-02 21:38:20,510 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-02 21:38:20,511 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-02 21:38:20,513 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-02 21:38:20,514 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-02 21:38:20,515 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-02 21:38:20,517 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-02 21:38:20,519 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-02 21:38:20,520 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-02 21:38:20,521 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-02 21:38:20,524 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-02 21:38:20,527 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-02 21:38:20,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-02 21:38:20,533 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-02 21:38:20,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-02 21:38:20,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-02 21:38:20,549 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-02 21:38:20,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-02 21:38:20,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-02 21:38:20,554 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-02 21:38:20,557 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-02 21:38:20,564 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-02 21:38:20,566 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-02 21:38:20,568 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-02 21:38:20,571 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-02 21:38:20,572 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-02 21:38:20,575 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-02 21:38:20,576 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-02 21:38:20,577 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-02 21:38:20,577 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-02 21:38:20,578 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-02 21:38:20,579 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-02 21:38:20,581 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-02 21:38:20,583 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-02 21:38:20,640 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-02 21:38:20,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-02 21:38:20,645 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-02 21:38:20,645 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-02 21:38:20,646 INFO L138 SettingsManager]: * Use SBE=true [2020-12-02 21:38:20,646 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-02 21:38:20,646 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-02 21:38:20,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-02 21:38:20,647 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-02 21:38:20,647 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-02 21:38:20,649 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-02 21:38:20,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-02 21:38:20,650 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-02 21:38:20,650 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-02 21:38:20,650 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-02 21:38:20,651 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-02 21:38:20,651 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-02 21:38:20,651 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-02 21:38:20,652 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-02 21:38:20,652 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-02 21:38:20,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-02 21:38:20,652 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-02 21:38:20,653 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-02 21:38:20,653 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-02 21:38:20,653 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-02 21:38:20,654 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-02 21:38:20,654 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-02 21:38:20,654 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-02 21:38:20,655 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77dab7aa1785f99b41e292299a6d5b4f844b78f4 [2020-12-02 21:38:21,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-02 21:38:21,181 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-02 21:38:21,188 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-02 21:38:21,190 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-02 21:38:21,191 INFO L275 PluginConnector]: CDTParser initialized [2020-12-02 21:38:21,193 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-02 21:38:21,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c1c3544/7f45e8bf7f834b48aaf6db72adb9219b/FLAG6e52008e2 [2020-12-02 21:38:21,938 INFO L306 CDTParser]: Found 1 translation units. [2020-12-02 21:38:21,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound10.c [2020-12-02 21:38:21,946 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c1c3544/7f45e8bf7f834b48aaf6db72adb9219b/FLAG6e52008e2 [2020-12-02 21:38:22,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b7c1c3544/7f45e8bf7f834b48aaf6db72adb9219b [2020-12-02 21:38:22,324 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-02 21:38:22,326 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-02 21:38:22,327 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:22,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-02 21:38:22,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-02 21:38:22,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b396eb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22, skipping insertion in model container [2020-12-02 21:38:22,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-02 21:38:22,366 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-02 21:38:22,535 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound10.c[526,539] [2020-12-02 21:38:22,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:22,568 INFO L203 MainTranslator]: Completed pre-run [2020-12-02 21:38:22,581 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/hard2_unwindbound10.c[526,539] [2020-12-02 21:38:22,589 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-02 21:38:22,607 INFO L208 MainTranslator]: Completed translation [2020-12-02 21:38:22,607 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22 WrapperNode [2020-12-02 21:38:22,607 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-02 21:38:22,609 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:22,609 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-02 21:38:22,609 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-02 21:38:22,619 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,628 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,655 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-02 21:38:22,656 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-02 21:38:22,656 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-02 21:38:22,656 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-02 21:38:22,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,669 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,674 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,679 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,681 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (1/1) ... [2020-12-02 21:38:22,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-02 21:38:22,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-02 21:38:22,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-02 21:38:22,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-02 21:38:22,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (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 [2020-12-02 21:38:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-02 21:38:22,872 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-02 21:38:22,875 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-02 21:38:22,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-02 21:38:23,419 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-02 21:38:23,420 INFO L298 CfgBuilder]: Removed 20 assume(true) statements. [2020-12-02 21:38:23,422 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:23 BoogieIcfgContainer [2020-12-02 21:38:23,422 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-02 21:38:23,424 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-02 21:38:23,424 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-02 21:38:23,428 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-02 21:38:23,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 09:38:22" (1/3) ... [2020-12-02 21:38:23,430 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f17ec27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:23, skipping insertion in model container [2020-12-02 21:38:23,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 09:38:22" (2/3) ... [2020-12-02 21:38:23,431 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f17ec27 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 09:38:23, skipping insertion in model container [2020-12-02 21:38:23,431 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:23" (3/3) ... [2020-12-02 21:38:23,433 INFO L111 eAbstractionObserver]: Analyzing ICFG hard2_unwindbound10.c [2020-12-02 21:38:23,452 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-02 21:38:23,456 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-12-02 21:38:23,472 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-12-02 21:38:23,504 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-02 21:38:23,504 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-02 21:38:23,504 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-02 21:38:23,504 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-02 21:38:23,505 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-02 21:38:23,505 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-02 21:38:23,505 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-02 21:38:23,505 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-02 21:38:23,531 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states. [2020-12-02 21:38:23,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-02 21:38:23,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:23,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-02 21:38:23,539 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]=== [2020-12-02 21:38:23,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:23,547 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-12-02 21:38:23,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:23,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828037935] [2020-12-02 21:38:23,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:23,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:23,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828037935] [2020-12-02 21:38:23,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:23,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:38:23,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146873057] [2020-12-02 21:38:23,814 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:38:23,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:23,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:38:23,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:23,834 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 4 states. [2020-12-02 21:38:24,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:24,035 INFO L93 Difference]: Finished difference Result 102 states and 139 transitions. [2020-12-02 21:38:24,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:24,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-12-02 21:38:24,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:24,052 INFO L225 Difference]: With dead ends: 102 [2020-12-02 21:38:24,053 INFO L226 Difference]: Without dead ends: 57 [2020-12-02 21:38:24,058 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 [2020-12-02 21:38:24,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-02 21:38:24,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 33. [2020-12-02 21:38:24,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-02 21:38:24,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-02 21:38:24,118 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 6 [2020-12-02 21:38:24,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:24,119 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-02 21:38:24,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:38:24,120 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-02 21:38:24,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:38:24,122 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:24,122 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:24,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-02 21:38:24,125 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]=== [2020-12-02 21:38:24,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:24,130 INFO L82 PathProgramCache]: Analyzing trace with hash 178921133, now seen corresponding path program 1 times [2020-12-02 21:38:24,131 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:24,131 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1829143276] [2020-12-02 21:38:24,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:24,174 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:24,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1041991838] [2020-12-02 21:38:24,174 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 [2020-12-02 21:38:24,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:24,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-02 21:38:24,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:24,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:24,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1829143276] [2020-12-02 21:38:24,400 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:24,400 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041991838] [2020-12-02 21:38:24,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:24,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-02 21:38:24,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047015327] [2020-12-02 21:38:24,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:38:24,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:24,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:38:24,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:24,410 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 4 states. [2020-12-02 21:38:24,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:24,441 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2020-12-02 21:38:24,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 21:38:24,442 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 21:38:24,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:24,456 INFO L225 Difference]: With dead ends: 54 [2020-12-02 21:38:24,457 INFO L226 Difference]: Without dead ends: 35 [2020-12-02 21:38:24,458 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 [2020-12-02 21:38:24,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-12-02 21:38:24,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-12-02 21:38:24,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-12-02 21:38:24,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-12-02 21:38:24,468 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-12-02 21:38:24,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:24,469 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-12-02 21:38:24,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:38:24,469 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-12-02 21:38:24,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-02 21:38:24,470 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:24,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:24,684 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-02 21:38:24,685 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]=== [2020-12-02 21:38:24,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:24,687 INFO L82 PathProgramCache]: Analyzing trace with hash 179657965, now seen corresponding path program 1 times [2020-12-02 21:38:24,687 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:24,687 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842497095] [2020-12-02 21:38:24,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:24,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:24,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842497095] [2020-12-02 21:38:24,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:24,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-02 21:38:24,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577679735] [2020-12-02 21:38:24,750 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-02 21:38:24,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:24,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-02 21:38:24,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-02 21:38:24,751 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-12-02 21:38:24,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:24,869 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-12-02 21:38:24,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:24,870 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-02 21:38:24,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:24,871 INFO L225 Difference]: With dead ends: 54 [2020-12-02 21:38:24,872 INFO L226 Difference]: Without dead ends: 52 [2020-12-02 21:38:24,872 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 [2020-12-02 21:38:24,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-02 21:38:24,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 33. [2020-12-02 21:38:24,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-02 21:38:24,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-12-02 21:38:24,889 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 8 [2020-12-02 21:38:24,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:24,889 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-12-02 21:38:24,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-02 21:38:24,890 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-12-02 21:38:24,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-02 21:38:24,891 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:24,891 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:24,892 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-02 21:38:24,892 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]=== [2020-12-02 21:38:24,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:24,893 INFO L82 PathProgramCache]: Analyzing trace with hash 852768432, now seen corresponding path program 1 times [2020-12-02 21:38:24,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:24,894 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375939719] [2020-12-02 21:38:24,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:24,922 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:24,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [440061118] [2020-12-02 21:38:24,925 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 [2020-12-02 21:38:24,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:24,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-02 21:38:24,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:25,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375939719] [2020-12-02 21:38:25,048 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:25,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440061118] [2020-12-02 21:38:25,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:25,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-02 21:38:25,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152150197] [2020-12-02 21:38:25,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:38:25,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:25,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:38:25,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:38:25,051 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 6 states. [2020-12-02 21:38:25,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:25,179 INFO L93 Difference]: Finished difference Result 79 states and 91 transitions. [2020-12-02 21:38:25,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:25,180 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-02 21:38:25,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:25,181 INFO L225 Difference]: With dead ends: 79 [2020-12-02 21:38:25,181 INFO L226 Difference]: Without dead ends: 56 [2020-12-02 21:38:25,182 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 [2020-12-02 21:38:25,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-12-02 21:38:25,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 47. [2020-12-02 21:38:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-12-02 21:38:25,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 54 transitions. [2020-12-02 21:38:25,192 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 54 transitions. Word has length 10 [2020-12-02 21:38:25,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:25,192 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 54 transitions. [2020-12-02 21:38:25,192 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:38:25,193 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 54 transitions. [2020-12-02 21:38:25,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-02 21:38:25,193 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:25,194 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:25,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:25,408 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]=== [2020-12-02 21:38:25,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:25,410 INFO L82 PathProgramCache]: Analyzing trace with hash -1265846374, now seen corresponding path program 1 times [2020-12-02 21:38:25,410 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:25,411 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390123555] [2020-12-02 21:38:25,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:25,426 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:25,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1453519193] [2020-12-02 21:38:25,427 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 [2020-12-02 21:38:25,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:25,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-02 21:38:25,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:25,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:25,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390123555] [2020-12-02 21:38:25,548 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:25,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453519193] [2020-12-02 21:38:25,548 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:25,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 21:38:25,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155154990] [2020-12-02 21:38:25,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:38:25,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:25,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:38:25,552 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:25,552 INFO L87 Difference]: Start difference. First operand 47 states and 54 transitions. Second operand 5 states. [2020-12-02 21:38:25,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:25,641 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-02 21:38:25,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-02 21:38:25,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-02 21:38:25,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:25,644 INFO L225 Difference]: With dead ends: 66 [2020-12-02 21:38:25,644 INFO L226 Difference]: Without dead ends: 54 [2020-12-02 21:38:25,645 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 [2020-12-02 21:38:25,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-12-02 21:38:25,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-12-02 21:38:25,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-12-02 21:38:25,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-12-02 21:38:25,653 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 14 [2020-12-02 21:38:25,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:25,654 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-12-02 21:38:25,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:38:25,654 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-12-02 21:38:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 21:38:25,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:25,655 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:25,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:25,870 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]=== [2020-12-02 21:38:25,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:25,872 INFO L82 PathProgramCache]: Analyzing trace with hash 1486360258, now seen corresponding path program 1 times [2020-12-02 21:38:25,872 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:25,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809090581] [2020-12-02 21:38:25,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:25,885 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:25,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880049001] [2020-12-02 21:38:25,890 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 [2020-12-02 21:38:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:25,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-02 21:38:25,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:25,989 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:25,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809090581] [2020-12-02 21:38:25,990 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:25,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880049001] [2020-12-02 21:38:25,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:25,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-12-02 21:38:25,991 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194856151] [2020-12-02 21:38:25,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:38:25,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:25,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:38:25,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:25,992 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 5 states. [2020-12-02 21:38:26,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:26,017 INFO L93 Difference]: Finished difference Result 78 states and 93 transitions. [2020-12-02 21:38:26,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:38:26,018 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-12-02 21:38:26,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:26,019 INFO L225 Difference]: With dead ends: 78 [2020-12-02 21:38:26,019 INFO L226 Difference]: Without dead ends: 50 [2020-12-02 21:38:26,020 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 [2020-12-02 21:38:26,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-12-02 21:38:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-12-02 21:38:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-12-02 21:38:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-12-02 21:38:26,027 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 18 [2020-12-02 21:38:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:26,027 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-12-02 21:38:26,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:38:26,028 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-12-02 21:38:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-02 21:38:26,028 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:26,028 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:26,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:26,242 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]=== [2020-12-02 21:38:26,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:26,243 INFO L82 PathProgramCache]: Analyzing trace with hash -2100512702, now seen corresponding path program 1 times [2020-12-02 21:38:26,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:26,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791193347] [2020-12-02 21:38:26,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:26,256 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:26,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [66626354] [2020-12-02 21:38:26,257 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 [2020-12-02 21:38:26,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:26,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-02 21:38:26,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:26,464 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:26,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791193347] [2020-12-02 21:38:26,464 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:26,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66626354] [2020-12-02 21:38:26,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:26,465 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:38:26,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83095920] [2020-12-02 21:38:26,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:26,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:26,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:26,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:26,468 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-12-02 21:38:26,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:26,664 INFO L93 Difference]: Finished difference Result 117 states and 141 transitions. [2020-12-02 21:38:26,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 21:38:26,665 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-02 21:38:26,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:26,667 INFO L225 Difference]: With dead ends: 117 [2020-12-02 21:38:26,668 INFO L226 Difference]: Without dead ends: 77 [2020-12-02 21:38:26,669 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 [2020-12-02 21:38:26,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-12-02 21:38:26,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 63. [2020-12-02 21:38:26,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-02 21:38:26,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 73 transitions. [2020-12-02 21:38:26,695 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 73 transitions. Word has length 18 [2020-12-02 21:38:26,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:26,696 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 73 transitions. [2020-12-02 21:38:26,696 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:38:26,696 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 73 transitions. [2020-12-02 21:38:26,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-02 21:38:26,699 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:26,699 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:26,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-02 21:38:26,914 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]=== [2020-12-02 21:38:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1057713026, now seen corresponding path program 1 times [2020-12-02 21:38:26,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:26,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131996330] [2020-12-02 21:38:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:26,928 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:26,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [817164045] [2020-12-02 21:38:26,929 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 [2020-12-02 21:38:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:26,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:38:26,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:27,043 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:27,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131996330] [2020-12-02 21:38:27,044 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:27,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [817164045] [2020-12-02 21:38:27,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:27,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:38:27,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561964657] [2020-12-02 21:38:27,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:38:27,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:27,047 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:38:27,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:38:27,047 INFO L87 Difference]: Start difference. First operand 63 states and 73 transitions. Second operand 6 states. [2020-12-02 21:38:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:27,077 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2020-12-02 21:38:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:38:27,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-12-02 21:38:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:27,084 INFO L225 Difference]: With dead ends: 70 [2020-12-02 21:38:27,084 INFO L226 Difference]: Without dead ends: 64 [2020-12-02 21:38:27,085 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 [2020-12-02 21:38:27,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-02 21:38:27,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-12-02 21:38:27,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-12-02 21:38:27,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 72 transitions. [2020-12-02 21:38:27,092 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 72 transitions. Word has length 25 [2020-12-02 21:38:27,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:27,092 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 72 transitions. [2020-12-02 21:38:27,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:38:27,092 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 72 transitions. [2020-12-02 21:38:27,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-02 21:38:27,093 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:27,093 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:27,308 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:27,309 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]=== [2020-12-02 21:38:27,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:27,310 INFO L82 PathProgramCache]: Analyzing trace with hash 998694484, now seen corresponding path program 2 times [2020-12-02 21:38:27,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:27,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92994132] [2020-12-02 21:38:27,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:27,323 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:27,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [483722679] [2020-12-02 21:38:27,324 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 [2020-12-02 21:38:27,366 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-02 21:38:27,367 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:27,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-02 21:38:27,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:27,440 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-12-02 21:38:27,440 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92994132] [2020-12-02 21:38:27,441 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:27,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [483722679] [2020-12-02 21:38:27,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-02 21:38:27,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-02 21:38:27,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955068504] [2020-12-02 21:38:27,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:38:27,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:27,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:38:27,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:27,443 INFO L87 Difference]: Start difference. First operand 63 states and 72 transitions. Second operand 5 states. [2020-12-02 21:38:27,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:27,480 INFO L93 Difference]: Finished difference Result 99 states and 114 transitions. [2020-12-02 21:38:27,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:27,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-02 21:38:27,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:27,481 INFO L225 Difference]: With dead ends: 99 [2020-12-02 21:38:27,482 INFO L226 Difference]: Without dead ends: 71 [2020-12-02 21:38:27,482 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 [2020-12-02 21:38:27,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-12-02 21:38:27,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 65. [2020-12-02 21:38:27,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-12-02 21:38:27,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-12-02 21:38:27,490 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 26 [2020-12-02 21:38:27,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:27,490 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-12-02 21:38:27,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:38:27,491 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-12-02 21:38:27,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-02 21:38:27,492 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:27,492 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1] [2020-12-02 21:38:27,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:27,706 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]=== [2020-12-02 21:38:27,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:27,707 INFO L82 PathProgramCache]: Analyzing trace with hash 1706788820, now seen corresponding path program 2 times [2020-12-02 21:38:27,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:27,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101171480] [2020-12-02 21:38:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:27,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:27,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719841551] [2020-12-02 21:38:27,721 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 [2020-12-02 21:38:27,791 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:38:27,791 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:27,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-02 21:38:27,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:27,931 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:27,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101171480] [2020-12-02 21:38:27,932 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:27,932 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719841551] [2020-12-02 21:38:27,932 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:27,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:27,933 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815685906] [2020-12-02 21:38:27,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:27,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:27,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:27,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:27,934 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 8 states. [2020-12-02 21:38:28,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:28,193 INFO L93 Difference]: Finished difference Result 138 states and 160 transitions. [2020-12-02 21:38:28,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-02 21:38:28,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-12-02 21:38:28,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:28,198 INFO L225 Difference]: With dead ends: 138 [2020-12-02 21:38:28,198 INFO L226 Difference]: Without dead ends: 124 [2020-12-02 21:38:28,199 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 [2020-12-02 21:38:28,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-02 21:38:28,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 92. [2020-12-02 21:38:28,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-02 21:38:28,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 108 transitions. [2020-12-02 21:38:28,215 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 108 transitions. Word has length 26 [2020-12-02 21:38:28,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:28,216 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 108 transitions. [2020-12-02 21:38:28,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:28,216 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 108 transitions. [2020-12-02 21:38:28,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-02 21:38:28,217 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:28,222 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:28,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-02 21:38:28,436 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]=== [2020-12-02 21:38:28,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:28,437 INFO L82 PathProgramCache]: Analyzing trace with hash 864374201, now seen corresponding path program 1 times [2020-12-02 21:38:28,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:28,438 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069036879] [2020-12-02 21:38:28,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:28,453 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:28,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [44326621] [2020-12-02 21:38:28,457 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 [2020-12-02 21:38:28,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:28,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-02 21:38:28,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:28,599 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:28,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069036879] [2020-12-02 21:38:28,600 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:28,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [44326621] [2020-12-02 21:38:28,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:28,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:38:28,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039928844] [2020-12-02 21:38:28,601 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-02 21:38:28,601 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:28,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-02 21:38:28,602 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-02 21:38:28,602 INFO L87 Difference]: Start difference. First operand 92 states and 108 transitions. Second operand 6 states. [2020-12-02 21:38:28,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:28,647 INFO L93 Difference]: Finished difference Result 100 states and 115 transitions. [2020-12-02 21:38:28,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:38:28,648 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-12-02 21:38:28,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:28,649 INFO L225 Difference]: With dead ends: 100 [2020-12-02 21:38:28,649 INFO L226 Difference]: Without dead ends: 92 [2020-12-02 21:38:28,649 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 [2020-12-02 21:38:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-02 21:38:28,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-12-02 21:38:28,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-12-02 21:38:28,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 107 transitions. [2020-12-02 21:38:28,676 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 107 transitions. Word has length 27 [2020-12-02 21:38:28,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:28,676 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 107 transitions. [2020-12-02 21:38:28,677 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-02 21:38:28,677 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 107 transitions. [2020-12-02 21:38:28,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-02 21:38:28,680 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:28,681 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] [2020-12-02 21:38:28,881 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:28,882 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]=== [2020-12-02 21:38:28,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:28,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1388472819, now seen corresponding path program 1 times [2020-12-02 21:38:28,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:28,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079486228] [2020-12-02 21:38:28,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:28,895 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:28,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [567533540] [2020-12-02 21:38:28,896 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 [2020-12-02 21:38:28,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:28,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-02 21:38:28,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:29,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079486228] [2020-12-02 21:38:29,110 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:29,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [567533540] [2020-12-02 21:38:29,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:29,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:38:29,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588929079] [2020-12-02 21:38:29,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:29,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:29,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:29,112 INFO L87 Difference]: Start difference. First operand 92 states and 107 transitions. Second operand 7 states. [2020-12-02 21:38:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:29,310 INFO L93 Difference]: Finished difference Result 114 states and 132 transitions. [2020-12-02 21:38:29,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:38:29,311 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-12-02 21:38:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:29,312 INFO L225 Difference]: With dead ends: 114 [2020-12-02 21:38:29,312 INFO L226 Difference]: Without dead ends: 112 [2020-12-02 21:38:29,313 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 [2020-12-02 21:38:29,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-12-02 21:38:29,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-12-02 21:38:29,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-02 21:38:29,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 118 transitions. [2020-12-02 21:38:29,321 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 118 transitions. Word has length 29 [2020-12-02 21:38:29,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:29,322 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 118 transitions. [2020-12-02 21:38:29,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:38:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 118 transitions. [2020-12-02 21:38:29,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-02 21:38:29,323 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:29,323 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] [2020-12-02 21:38:29,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:29,538 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]=== [2020-12-02 21:38:29,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:29,539 INFO L82 PathProgramCache]: Analyzing trace with hash -93011142, now seen corresponding path program 1 times [2020-12-02 21:38:29,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:29,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018919587] [2020-12-02 21:38:29,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:29,550 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:29,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1880849530] [2020-12-02 21:38:29,551 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 [2020-12-02 21:38:29,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:29,604 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 21:38:29,605 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:29,683 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:29,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018919587] [2020-12-02 21:38:29,683 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:29,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880849530] [2020-12-02 21:38:29,683 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:29,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-02 21:38:29,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5737318] [2020-12-02 21:38:29,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:29,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:29,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:29,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:29,685 INFO L87 Difference]: Start difference. First operand 99 states and 118 transitions. Second operand 7 states. [2020-12-02 21:38:29,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:29,721 INFO L93 Difference]: Finished difference Result 112 states and 131 transitions. [2020-12-02 21:38:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:38:29,721 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-12-02 21:38:29,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:29,722 INFO L225 Difference]: With dead ends: 112 [2020-12-02 21:38:29,723 INFO L226 Difference]: Without dead ends: 102 [2020-12-02 21:38:29,723 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 [2020-12-02 21:38:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-02 21:38:29,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2020-12-02 21:38:29,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-02 21:38:29,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 119 transitions. [2020-12-02 21:38:29,731 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 119 transitions. Word has length 30 [2020-12-02 21:38:29,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:29,731 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 119 transitions. [2020-12-02 21:38:29,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:38:29,731 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 119 transitions. [2020-12-02 21:38:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-02 21:38:29,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:29,732 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] [2020-12-02 21:38:29,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-02 21:38:29,946 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]=== [2020-12-02 21:38:29,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:29,947 INFO L82 PathProgramCache]: Analyzing trace with hash 1412607120, now seen corresponding path program 1 times [2020-12-02 21:38:29,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:29,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082353483] [2020-12-02 21:38:29,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:29,957 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:29,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1215027323] [2020-12-02 21:38:29,958 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 [2020-12-02 21:38:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:30,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-02 21:38:30,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:30,160 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:30,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082353483] [2020-12-02 21:38:30,160 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:30,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215027323] [2020-12-02 21:38:30,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:30,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:30,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415462017] [2020-12-02 21:38:30,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:30,162 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:30,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:30,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:30,162 INFO L87 Difference]: Start difference. First operand 101 states and 119 transitions. Second operand 8 states. [2020-12-02 21:38:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:30,354 INFO L93 Difference]: Finished difference Result 130 states and 152 transitions. [2020-12-02 21:38:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 21:38:30,355 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-02 21:38:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:30,356 INFO L225 Difference]: With dead ends: 130 [2020-12-02 21:38:30,356 INFO L226 Difference]: Without dead ends: 102 [2020-12-02 21:38:30,357 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 [2020-12-02 21:38:30,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-02 21:38:30,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 100. [2020-12-02 21:38:30,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-12-02 21:38:30,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 114 transitions. [2020-12-02 21:38:30,373 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 114 transitions. Word has length 31 [2020-12-02 21:38:30,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:30,373 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 114 transitions. [2020-12-02 21:38:30,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:30,373 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 114 transitions. [2020-12-02 21:38:30,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-02 21:38:30,374 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:30,374 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1] [2020-12-02 21:38:30,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-02 21:38:30,575 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]=== [2020-12-02 21:38:30,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:30,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1601348966, now seen corresponding path program 3 times [2020-12-02 21:38:30,577 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:30,577 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375000854] [2020-12-02 21:38:30,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:30,588 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:30,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1296007912] [2020-12-02 21:38:30,588 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 [2020-12-02 21:38:30,658 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-02 21:38:30,658 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:30,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-02 21:38:30,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:30,899 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-12-02 21:38:30,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375000854] [2020-12-02 21:38:30,903 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:30,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296007912] [2020-12-02 21:38:30,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:30,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-02 21:38:30,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523713227] [2020-12-02 21:38:30,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 21:38:30,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:30,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 21:38:30,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-12-02 21:38:30,910 INFO L87 Difference]: Start difference. First operand 100 states and 114 transitions. Second operand 9 states. [2020-12-02 21:38:31,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:31,164 INFO L93 Difference]: Finished difference Result 127 states and 141 transitions. [2020-12-02 21:38:31,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 21:38:31,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-12-02 21:38:31,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:31,170 INFO L225 Difference]: With dead ends: 127 [2020-12-02 21:38:31,170 INFO L226 Difference]: Without dead ends: 117 [2020-12-02 21:38:31,173 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 [2020-12-02 21:38:31,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-02 21:38:31,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2020-12-02 21:38:31,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-02 21:38:31,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 111 transitions. [2020-12-02 21:38:31,188 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 111 transitions. Word has length 34 [2020-12-02 21:38:31,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:31,189 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 111 transitions. [2020-12-02 21:38:31,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 21:38:31,190 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 111 transitions. [2020-12-02 21:38:31,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-02 21:38:31,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:31,191 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] [2020-12-02 21:38:31,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-02 21:38:31,404 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]=== [2020-12-02 21:38:31,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:31,405 INFO L82 PathProgramCache]: Analyzing trace with hash 894098064, now seen corresponding path program 1 times [2020-12-02 21:38:31,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:31,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386003261] [2020-12-02 21:38:31,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:31,424 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:31,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1057363409] [2020-12-02 21:38:31,425 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 [2020-12-02 21:38:31,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:31,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-02 21:38:31,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:31,624 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:31,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386003261] [2020-12-02 21:38:31,624 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:31,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057363409] [2020-12-02 21:38:31,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:31,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:31,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059057910] [2020-12-02 21:38:31,625 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:31,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:31,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:31,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:31,629 INFO L87 Difference]: Start difference. First operand 98 states and 111 transitions. Second operand 8 states. [2020-12-02 21:38:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:31,782 INFO L93 Difference]: Finished difference Result 100 states and 112 transitions. [2020-12-02 21:38:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-02 21:38:31,782 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-02 21:38:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:31,783 INFO L225 Difference]: With dead ends: 100 [2020-12-02 21:38:31,783 INFO L226 Difference]: Without dead ends: 83 [2020-12-02 21:38:31,784 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 [2020-12-02 21:38:31,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-12-02 21:38:31,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2020-12-02 21:38:31,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-12-02 21:38:31,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-12-02 21:38:31,794 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 34 [2020-12-02 21:38:31,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:31,794 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-12-02 21:38:31,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:31,794 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-12-02 21:38:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-02 21:38:31,795 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:31,795 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:32,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:32,010 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]=== [2020-12-02 21:38:32,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:32,011 INFO L82 PathProgramCache]: Analyzing trace with hash 1890706023, now seen corresponding path program 2 times [2020-12-02 21:38:32,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:32,012 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928991591] [2020-12-02 21:38:32,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:32,020 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:32,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [209065682] [2020-12-02 21:38:32,021 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 [2020-12-02 21:38:32,081 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:38:32,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:32,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-02 21:38:32,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:32,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928991591] [2020-12-02 21:38:32,174 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:32,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [209065682] [2020-12-02 21:38:32,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:32,174 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-02 21:38:32,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807039363] [2020-12-02 21:38:32,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:32,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:32,175 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:32,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:32,176 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 7 states. [2020-12-02 21:38:32,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:32,238 INFO L93 Difference]: Finished difference Result 93 states and 105 transitions. [2020-12-02 21:38:32,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-02 21:38:32,238 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-02 21:38:32,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:32,239 INFO L225 Difference]: With dead ends: 93 [2020-12-02 21:38:32,239 INFO L226 Difference]: Without dead ends: 85 [2020-12-02 21:38:32,240 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 [2020-12-02 21:38:32,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-12-02 21:38:32,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2020-12-02 21:38:32,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-02 21:38:32,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 97 transitions. [2020-12-02 21:38:32,249 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 97 transitions. Word has length 35 [2020-12-02 21:38:32,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:32,249 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 97 transitions. [2020-12-02 21:38:32,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:38:32,249 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 97 transitions. [2020-12-02 21:38:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-02 21:38:32,250 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:32,250 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] [2020-12-02 21:38:32,466 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-02 21:38:32,467 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]=== [2020-12-02 21:38:32,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:32,468 INFO L82 PathProgramCache]: Analyzing trace with hash 1368897339, now seen corresponding path program 2 times [2020-12-02 21:38:32,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:32,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528602166] [2020-12-02 21:38:32,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:32,479 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:32,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [286523150] [2020-12-02 21:38:32,480 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 [2020-12-02 21:38:32,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:38:32,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:32,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 39 conjunts are in the unsatisfiable core [2020-12-02 21:38:32,551 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:32,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528602166] [2020-12-02 21:38:32,701 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:32,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [286523150] [2020-12-02 21:38:32,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:32,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:32,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48673259] [2020-12-02 21:38:32,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:32,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:32,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:32,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:32,703 INFO L87 Difference]: Start difference. First operand 85 states and 97 transitions. Second operand 8 states. [2020-12-02 21:38:32,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:32,993 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2020-12-02 21:38:32,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-02 21:38:32,993 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 37 [2020-12-02 21:38:32,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:32,994 INFO L225 Difference]: With dead ends: 157 [2020-12-02 21:38:32,994 INFO L226 Difference]: Without dead ends: 119 [2020-12-02 21:38:32,995 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 [2020-12-02 21:38:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2020-12-02 21:38:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 99. [2020-12-02 21:38:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-12-02 21:38:33,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 115 transitions. [2020-12-02 21:38:33,005 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 115 transitions. Word has length 37 [2020-12-02 21:38:33,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:33,005 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 115 transitions. [2020-12-02 21:38:33,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 115 transitions. [2020-12-02 21:38:33,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-02 21:38:33,006 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:33,006 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] [2020-12-02 21:38:33,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-02 21:38:33,220 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]=== [2020-12-02 21:38:33,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:33,221 INFO L82 PathProgramCache]: Analyzing trace with hash -513882164, now seen corresponding path program 2 times [2020-12-02 21:38:33,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:33,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270109101] [2020-12-02 21:38:33,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:33,231 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:33,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1896537360] [2020-12-02 21:38:33,231 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 [2020-12-02 21:38:33,293 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:38:33,293 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:33,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-02 21:38:33,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:33,385 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:33,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270109101] [2020-12-02 21:38:33,385 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:33,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896537360] [2020-12-02 21:38:33,386 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:33,386 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:38:33,386 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339905903] [2020-12-02 21:38:33,386 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:33,387 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:33,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:33,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:33,387 INFO L87 Difference]: Start difference. First operand 99 states and 115 transitions. Second operand 8 states. [2020-12-02 21:38:33,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:33,439 INFO L93 Difference]: Finished difference Result 118 states and 135 transitions. [2020-12-02 21:38:33,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 21:38:33,439 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-12-02 21:38:33,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:33,440 INFO L225 Difference]: With dead ends: 118 [2020-12-02 21:38:33,440 INFO L226 Difference]: Without dead ends: 108 [2020-12-02 21:38:33,441 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 [2020-12-02 21:38:33,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-02 21:38:33,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-12-02 21:38:33,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-12-02 21:38:33,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-12-02 21:38:33,453 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 38 [2020-12-02 21:38:33,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:33,453 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-12-02 21:38:33,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:33,454 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-12-02 21:38:33,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-02 21:38:33,454 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:33,454 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:33,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:33,668 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]=== [2020-12-02 21:38:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:33,669 INFO L82 PathProgramCache]: Analyzing trace with hash 411953429, now seen corresponding path program 3 times [2020-12-02 21:38:33,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:33,671 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100343950] [2020-12-02 21:38:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:33,690 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:33,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [882171515] [2020-12-02 21:38:33,696 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 [2020-12-02 21:38:33,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-12-02 21:38:33,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:33,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-02 21:38:33,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:33,857 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:33,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100343950] [2020-12-02 21:38:33,858 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:33,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882171515] [2020-12-02 21:38:33,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:33,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:38:33,858 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797255962] [2020-12-02 21:38:33,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-02 21:38:33,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:33,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-02 21:38:33,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-02 21:38:33,860 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-12-02 21:38:33,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:33,931 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-12-02 21:38:33,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-02 21:38:33,932 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 43 [2020-12-02 21:38:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:33,933 INFO L225 Difference]: With dead ends: 117 [2020-12-02 21:38:33,933 INFO L226 Difference]: Without dead ends: 109 [2020-12-02 21:38:33,934 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 [2020-12-02 21:38:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-02 21:38:33,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-12-02 21:38:33,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-12-02 21:38:33,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-12-02 21:38:33,944 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 43 [2020-12-02 21:38:33,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:33,944 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-12-02 21:38:33,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-02 21:38:33,944 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-12-02 21:38:33,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-02 21:38:33,945 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:33,945 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] [2020-12-02 21:38:34,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:34,160 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]=== [2020-12-02 21:38:34,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:34,161 INFO L82 PathProgramCache]: Analyzing trace with hash 1687535646, now seen corresponding path program 3 times [2020-12-02 21:38:34,161 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:34,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879581480] [2020-12-02 21:38:34,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:34,171 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:34,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1674605582] [2020-12-02 21:38:34,172 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 [2020-12-02 21:38:34,242 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-02 21:38:34,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:34,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-02 21:38:34,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:34,411 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-02 21:38:34,426 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:38:34,435 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-02 21:38:34,453 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-02 21:38:34,455 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-02 21:38:34,461 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:38:34,472 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-02 21:38:34,475 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:38:34,494 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:38:34,501 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-02 21:38:34,515 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-02 21:38:34,519 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-02 21:38:34,525 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:38:34,536 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-02 21:38:34,539 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-02 21:38:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 14 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-02 21:38:34,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879581480] [2020-12-02 21:38:34,993 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:34,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1674605582] [2020-12-02 21:38:34,994 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:34,994 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-02 21:38:34,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285524952] [2020-12-02 21:38:34,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-02 21:38:34,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:34,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-02 21:38:35,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:38:35,001 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 10 states. [2020-12-02 21:38:35,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:35,224 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-12-02 21:38:35,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-02 21:38:35,225 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-02 21:38:35,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:35,226 INFO L225 Difference]: With dead ends: 113 [2020-12-02 21:38:35,226 INFO L226 Difference]: Without dead ends: 109 [2020-12-02 21:38:35,226 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 [2020-12-02 21:38:35,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-02 21:38:35,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 98. [2020-12-02 21:38:35,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-12-02 21:38:35,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2020-12-02 21:38:35,236 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 44 [2020-12-02 21:38:35,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:35,237 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2020-12-02 21:38:35,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-02 21:38:35,237 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2020-12-02 21:38:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-02 21:38:35,237 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:35,237 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] [2020-12-02 21:38:35,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:35,451 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]=== [2020-12-02 21:38:35,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:35,452 INFO L82 PathProgramCache]: Analyzing trace with hash 773970761, now seen corresponding path program 3 times [2020-12-02 21:38:35,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:35,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313757056] [2020-12-02 21:38:35,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:35,461 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:35,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012158658] [2020-12-02 21:38:35,462 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 [2020-12-02 21:38:35,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-02 21:38:35,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:35,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-02 21:38:35,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:35,639 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:35,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313757056] [2020-12-02 21:38:35,640 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:35,640 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012158658] [2020-12-02 21:38:35,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:35,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:35,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416666987] [2020-12-02 21:38:35,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 21:38:35,641 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:35,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 21:38:35,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 21:38:35,641 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand 9 states. [2020-12-02 21:38:35,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:35,706 INFO L93 Difference]: Finished difference Result 127 states and 143 transitions. [2020-12-02 21:38:35,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-02 21:38:35,707 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 45 [2020-12-02 21:38:35,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:35,708 INFO L225 Difference]: With dead ends: 127 [2020-12-02 21:38:35,708 INFO L226 Difference]: Without dead ends: 117 [2020-12-02 21:38:35,709 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 [2020-12-02 21:38:35,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-12-02 21:38:35,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2020-12-02 21:38:35,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-12-02 21:38:35,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2020-12-02 21:38:35,720 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2020-12-02 21:38:35,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:35,720 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2020-12-02 21:38:35,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 21:38:35,720 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2020-12-02 21:38:35,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-02 21:38:35,721 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:35,721 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] [2020-12-02 21:38:35,935 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-02 21:38:35,936 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]=== [2020-12-02 21:38:35,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:35,936 INFO L82 PathProgramCache]: Analyzing trace with hash 494883615, now seen corresponding path program 2 times [2020-12-02 21:38:35,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:35,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952816523] [2020-12-02 21:38:35,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:35,944 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:35,945 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [886966379] [2020-12-02 21:38:35,945 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 [2020-12-02 21:38:35,998 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-02 21:38:35,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:36,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 27 conjunts are in the unsatisfiable core [2020-12-02 21:38:36,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:36,162 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-12-02 21:38:36,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952816523] [2020-12-02 21:38:36,163 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:36,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886966379] [2020-12-02 21:38:36,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:36,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-02 21:38:36,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489012739] [2020-12-02 21:38:36,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 21:38:36,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:36,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 21:38:36,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-12-02 21:38:36,165 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand 11 states. [2020-12-02 21:38:36,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:36,597 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2020-12-02 21:38:36,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-02 21:38:36,600 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-02 21:38:36,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:36,601 INFO L225 Difference]: With dead ends: 132 [2020-12-02 21:38:36,601 INFO L226 Difference]: Without dead ends: 120 [2020-12-02 21:38:36,601 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 [2020-12-02 21:38:36,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-12-02 21:38:36,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 108. [2020-12-02 21:38:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-12-02 21:38:36,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 119 transitions. [2020-12-02 21:38:36,613 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 119 transitions. Word has length 49 [2020-12-02 21:38:36,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:36,613 INFO L481 AbstractCegarLoop]: Abstraction has 108 states and 119 transitions. [2020-12-02 21:38:36,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 21:38:36,614 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 119 transitions. [2020-12-02 21:38:36,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-02 21:38:36,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:36,614 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:36,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-12-02 21:38:36,828 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]=== [2020-12-02 21:38:36,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:36,829 INFO L82 PathProgramCache]: Analyzing trace with hash -2054725181, now seen corresponding path program 4 times [2020-12-02 21:38:36,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:36,829 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691627233] [2020-12-02 21:38:36,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:36,837 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:36,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1594393274] [2020-12-02 21:38:36,837 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 [2020-12-02 21:38:36,909 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-02 21:38:36,909 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:36,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-02 21:38:36,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:37,038 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:37,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691627233] [2020-12-02 21:38:37,038 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:37,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594393274] [2020-12-02 21:38:37,040 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:37,040 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-02 21:38:37,040 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115390703] [2020-12-02 21:38:37,041 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-02 21:38:37,041 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:37,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-02 21:38:37,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-02 21:38:37,042 INFO L87 Difference]: Start difference. First operand 108 states and 119 transitions. Second operand 9 states. [2020-12-02 21:38:37,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:37,140 INFO L93 Difference]: Finished difference Result 118 states and 129 transitions. [2020-12-02 21:38:37,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-02 21:38:37,140 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-12-02 21:38:37,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:37,141 INFO L225 Difference]: With dead ends: 118 [2020-12-02 21:38:37,141 INFO L226 Difference]: Without dead ends: 110 [2020-12-02 21:38:37,144 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 [2020-12-02 21:38:37,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-12-02 21:38:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-12-02 21:38:37,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-02 21:38:37,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 121 transitions. [2020-12-02 21:38:37,157 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 121 transitions. Word has length 51 [2020-12-02 21:38:37,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:37,157 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 121 transitions. [2020-12-02 21:38:37,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-02 21:38:37,157 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 121 transitions. [2020-12-02 21:38:37,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-02 21:38:37,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:37,158 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] [2020-12-02 21:38:37,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:37,371 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]=== [2020-12-02 21:38:37,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:37,372 INFO L82 PathProgramCache]: Analyzing trace with hash -12168916, now seen corresponding path program 4 times [2020-12-02 21:38:37,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:37,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267567740] [2020-12-02 21:38:37,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:37,386 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:37,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1546603048] [2020-12-02 21:38:37,387 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 [2020-12-02 21:38:37,484 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-02 21:38:37,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:37,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-02 21:38:37,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:37,610 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:37,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267567740] [2020-12-02 21:38:37,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:37,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1546603048] [2020-12-02 21:38:37,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:37,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-02 21:38:37,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120083525] [2020-12-02 21:38:37,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-02 21:38:37,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:37,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-02 21:38:37,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:38:37,613 INFO L87 Difference]: Start difference. First operand 110 states and 121 transitions. Second operand 10 states. [2020-12-02 21:38:37,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:37,707 INFO L93 Difference]: Finished difference Result 141 states and 156 transitions. [2020-12-02 21:38:37,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-02 21:38:37,708 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 52 [2020-12-02 21:38:37,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:37,709 INFO L225 Difference]: With dead ends: 141 [2020-12-02 21:38:37,709 INFO L226 Difference]: Without dead ends: 131 [2020-12-02 21:38:37,710 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 [2020-12-02 21:38:37,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-02 21:38:37,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 130. [2020-12-02 21:38:37,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-02 21:38:37,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 144 transitions. [2020-12-02 21:38:37,723 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 144 transitions. Word has length 52 [2020-12-02 21:38:37,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:37,723 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 144 transitions. [2020-12-02 21:38:37,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-02 21:38:37,724 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 144 transitions. [2020-12-02 21:38:37,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-02 21:38:37,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:37,725 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:37,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-12-02 21:38:37,937 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]=== [2020-12-02 21:38:37,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:37,938 INFO L82 PathProgramCache]: Analyzing trace with hash -1005826959, now seen corresponding path program 5 times [2020-12-02 21:38:37,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:37,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146076513] [2020-12-02 21:38:37,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:37,946 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:37,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1221992452] [2020-12-02 21:38:37,946 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 [2020-12-02 21:38:38,019 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2020-12-02 21:38:38,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:38,021 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-02 21:38:38,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:38,132 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 132 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:38,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146076513] [2020-12-02 21:38:38,133 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:38,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1221992452] [2020-12-02 21:38:38,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:38,133 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-02 21:38:38,133 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134793883] [2020-12-02 21:38:38,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-02 21:38:38,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:38,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-02 21:38:38,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-02 21:38:38,135 INFO L87 Difference]: Start difference. First operand 130 states and 144 transitions. Second operand 10 states. [2020-12-02 21:38:38,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:38,239 INFO L93 Difference]: Finished difference Result 140 states and 154 transitions. [2020-12-02 21:38:38,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-02 21:38:38,249 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-12-02 21:38:38,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:38,250 INFO L225 Difference]: With dead ends: 140 [2020-12-02 21:38:38,250 INFO L226 Difference]: Without dead ends: 132 [2020-12-02 21:38:38,250 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 [2020-12-02 21:38:38,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-12-02 21:38:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 132. [2020-12-02 21:38:38,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-12-02 21:38:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 146 transitions. [2020-12-02 21:38:38,262 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 146 transitions. Word has length 59 [2020-12-02 21:38:38,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:38,263 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 146 transitions. [2020-12-02 21:38:38,263 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-02 21:38:38,263 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 146 transitions. [2020-12-02 21:38:38,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-02 21:38:38,264 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:38,264 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] [2020-12-02 21:38:38,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:38,479 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]=== [2020-12-02 21:38:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:38,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1674511849, now seen corresponding path program 5 times [2020-12-02 21:38:38,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:38,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634168437] [2020-12-02 21:38:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:38,487 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:38,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668112471] [2020-12-02 21:38:38,488 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 [2020-12-02 21:38:38,613 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-02 21:38:38,613 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:38,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-02 21:38:38,616 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:38,746 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:38,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634168437] [2020-12-02 21:38:38,747 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:38,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668112471] [2020-12-02 21:38:38,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:38,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-02 21:38:38,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080821516] [2020-12-02 21:38:38,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-02 21:38:38,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:38,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-02 21:38:38,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-02 21:38:38,749 INFO L87 Difference]: Start difference. First operand 132 states and 146 transitions. Second operand 11 states. [2020-12-02 21:38:38,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:38,850 INFO L93 Difference]: Finished difference Result 163 states and 181 transitions. [2020-12-02 21:38:38,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-02 21:38:38,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-02 21:38:38,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:38,853 INFO L225 Difference]: With dead ends: 163 [2020-12-02 21:38:38,853 INFO L226 Difference]: Without dead ends: 153 [2020-12-02 21:38:38,854 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 [2020-12-02 21:38:38,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-02 21:38:38,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-12-02 21:38:38,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-12-02 21:38:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-12-02 21:38:38,869 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 59 [2020-12-02 21:38:38,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:38,869 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-12-02 21:38:38,869 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-02 21:38:38,870 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-12-02 21:38:38,877 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-02 21:38:38,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:38,877 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] [2020-12-02 21:38:39,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-02 21:38:39,094 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]=== [2020-12-02 21:38:39,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:39,095 INFO L82 PathProgramCache]: Analyzing trace with hash 1527902860, now seen corresponding path program 6 times [2020-12-02 21:38:39,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:39,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706977205] [2020-12-02 21:38:39,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:39,103 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:39,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [528024695] [2020-12-02 21:38:39,104 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 [2020-12-02 21:38:39,217 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2020-12-02 21:38:39,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:39,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-02 21:38:39,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:39,360 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 0 proven. 104 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:39,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706977205] [2020-12-02 21:38:39,361 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:39,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [528024695] [2020-12-02 21:38:39,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:39,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-02 21:38:39,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677226389] [2020-12-02 21:38:39,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-02 21:38:39,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:39,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-02 21:38:39,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-02 21:38:39,363 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 12 states. [2020-12-02 21:38:39,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:39,482 INFO L93 Difference]: Finished difference Result 187 states and 209 transitions. [2020-12-02 21:38:39,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-02 21:38:39,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 66 [2020-12-02 21:38:39,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:39,484 INFO L225 Difference]: With dead ends: 187 [2020-12-02 21:38:39,484 INFO L226 Difference]: Without dead ends: 175 [2020-12-02 21:38:39,485 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 [2020-12-02 21:38:39,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-02 21:38:39,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 174. [2020-12-02 21:38:39,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-02 21:38:39,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 194 transitions. [2020-12-02 21:38:39,506 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 194 transitions. Word has length 66 [2020-12-02 21:38:39,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:39,507 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 194 transitions. [2020-12-02 21:38:39,507 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-02 21:38:39,507 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 194 transitions. [2020-12-02 21:38:39,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-02 21:38:39,508 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:39,508 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] [2020-12-02 21:38:39,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-02 21:38:39,723 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]=== [2020-12-02 21:38:39,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:39,724 INFO L82 PathProgramCache]: Analyzing trace with hash -817031031, now seen corresponding path program 7 times [2020-12-02 21:38:39,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:39,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [782862140] [2020-12-02 21:38:39,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:39,732 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:39,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [922109531] [2020-12-02 21:38:39,733 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 [2020-12-02 21:38:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-02 21:38:39,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-02 21:38:39,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:39,983 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 141 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:39,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [782862140] [2020-12-02 21:38:39,984 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:39,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [922109531] [2020-12-02 21:38:39,984 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:39,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-02 21:38:39,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803281014] [2020-12-02 21:38:39,985 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-02 21:38:39,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:39,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-02 21:38:39,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-02 21:38:39,987 INFO L87 Difference]: Start difference. First operand 174 states and 194 transitions. Second operand 13 states. [2020-12-02 21:38:40,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:40,135 INFO L93 Difference]: Finished difference Result 209 states and 234 transitions. [2020-12-02 21:38:40,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-02 21:38:40,135 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 73 [2020-12-02 21:38:40,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:40,137 INFO L225 Difference]: With dead ends: 209 [2020-12-02 21:38:40,137 INFO L226 Difference]: Without dead ends: 197 [2020-12-02 21:38:40,138 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 [2020-12-02 21:38:40,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-02 21:38:40,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 196. [2020-12-02 21:38:40,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-12-02 21:38:40,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 219 transitions. [2020-12-02 21:38:40,157 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 219 transitions. Word has length 73 [2020-12-02 21:38:40,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:40,157 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 219 transitions. [2020-12-02 21:38:40,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-02 21:38:40,157 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 219 transitions. [2020-12-02 21:38:40,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-12-02 21:38:40,159 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:40,159 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] [2020-12-02 21:38:40,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-02 21:38:40,374 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]=== [2020-12-02 21:38:40,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:40,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1740090348, now seen corresponding path program 8 times [2020-12-02 21:38:40,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:40,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655648068] [2020-12-02 21:38:40,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:40,384 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:40,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1732213601] [2020-12-02 21:38:40,385 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 [2020-12-02 21:38:40,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-02 21:38:40,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:40,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-02 21:38:40,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:40,565 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 88 proven. 43 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2020-12-02 21:38:40,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655648068] [2020-12-02 21:38:40,566 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:40,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1732213601] [2020-12-02 21:38:40,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:40,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-02 21:38:40,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473780533] [2020-12-02 21:38:40,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-02 21:38:40,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:40,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-02 21:38:40,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-02 21:38:40,568 INFO L87 Difference]: Start difference. First operand 196 states and 219 transitions. Second operand 5 states. [2020-12-02 21:38:40,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:40,626 INFO L93 Difference]: Finished difference Result 241 states and 269 transitions. [2020-12-02 21:38:40,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-02 21:38:40,627 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 80 [2020-12-02 21:38:40,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:40,628 INFO L225 Difference]: With dead ends: 241 [2020-12-02 21:38:40,628 INFO L226 Difference]: Without dead ends: 175 [2020-12-02 21:38:40,629 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 [2020-12-02 21:38:40,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-12-02 21:38:40,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-12-02 21:38:40,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-12-02 21:38:40,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2020-12-02 21:38:40,645 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 80 [2020-12-02 21:38:40,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:40,645 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2020-12-02 21:38:40,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-02 21:38:40,645 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2020-12-02 21:38:40,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-12-02 21:38:40,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:40,647 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] [2020-12-02 21:38:40,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:40,851 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]=== [2020-12-02 21:38:40,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:40,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1453108407, now seen corresponding path program 9 times [2020-12-02 21:38:40,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:40,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266854273] [2020-12-02 21:38:40,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:40,860 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:40,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1886766600] [2020-12-02 21:38:40,861 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 [2020-12-02 21:38:41,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2020-12-02 21:38:41,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:41,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-02 21:38:41,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:41,469 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 65 proven. 87 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-12-02 21:38:41,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266854273] [2020-12-02 21:38:41,470 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:41,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886766600] [2020-12-02 21:38:41,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:41,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-02 21:38:41,471 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786682798] [2020-12-02 21:38:41,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-02 21:38:41,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:41,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-02 21:38:41,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-12-02 21:38:41,472 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand 13 states. [2020-12-02 21:38:41,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:41,776 INFO L93 Difference]: Finished difference Result 252 states and 282 transitions. [2020-12-02 21:38:41,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-02 21:38:41,776 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 81 [2020-12-02 21:38:41,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:41,778 INFO L225 Difference]: With dead ends: 252 [2020-12-02 21:38:41,778 INFO L226 Difference]: Without dead ends: 161 [2020-12-02 21:38:41,780 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 [2020-12-02 21:38:41,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2020-12-02 21:38:41,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 161. [2020-12-02 21:38:41,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-12-02 21:38:41,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 178 transitions. [2020-12-02 21:38:41,795 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 178 transitions. Word has length 81 [2020-12-02 21:38:41,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:41,796 INFO L481 AbstractCegarLoop]: Abstraction has 161 states and 178 transitions. [2020-12-02 21:38:41,796 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-02 21:38:41,796 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 178 transitions. [2020-12-02 21:38:41,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-02 21:38:41,797 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:41,797 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] [2020-12-02 21:38:42,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-12-02 21:38:42,012 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]=== [2020-12-02 21:38:42,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:42,012 INFO L82 PathProgramCache]: Analyzing trace with hash -861698128, now seen corresponding path program 10 times [2020-12-02 21:38:42,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:42,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000789651] [2020-12-02 21:38:42,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:42,020 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:42,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [269534464] [2020-12-02 21:38:42,021 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 [2020-12-02 21:38:42,671 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-02 21:38:42,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:42,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-02 21:38:42,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:42,786 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 14 proven. 146 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:42,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000789651] [2020-12-02 21:38:42,786 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:42,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [269534464] [2020-12-02 21:38:42,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:42,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-02 21:38:42,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516218868] [2020-12-02 21:38:42,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-02 21:38:42,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:42,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-02 21:38:42,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-02 21:38:42,789 INFO L87 Difference]: Start difference. First operand 161 states and 178 transitions. Second operand 7 states. [2020-12-02 21:38:42,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:42,909 INFO L93 Difference]: Finished difference Result 232 states and 257 transitions. [2020-12-02 21:38:42,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-02 21:38:42,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 82 [2020-12-02 21:38:42,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:42,912 INFO L225 Difference]: With dead ends: 232 [2020-12-02 21:38:42,912 INFO L226 Difference]: Without dead ends: 147 [2020-12-02 21:38:42,912 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 [2020-12-02 21:38:42,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-12-02 21:38:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-12-02 21:38:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-02 21:38:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2020-12-02 21:38:42,930 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 82 [2020-12-02 21:38:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:42,930 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2020-12-02 21:38:42,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-02 21:38:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2020-12-02 21:38:42,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-02 21:38:42,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:42,932 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-02 21:38:43,136 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-02 21:38:43,137 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]=== [2020-12-02 21:38:43,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:43,137 INFO L82 PathProgramCache]: Analyzing trace with hash 1395374203, now seen corresponding path program 6 times [2020-12-02 21:38:43,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:43,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012746043] [2020-12-02 21:38:43,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:43,145 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:43,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1239201076] [2020-12-02 21:38:43,146 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 [2020-12-02 21:38:43,241 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2020-12-02 21:38:43,242 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-02 21:38:43,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-02 21:38:43,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-02 21:38:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 0 proven. 306 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-02 21:38:43,436 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012746043] [2020-12-02 21:38:43,436 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-02 21:38:43,437 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1239201076] [2020-12-02 21:38:43,437 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-02 21:38:43,437 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-02 21:38:43,437 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842110796] [2020-12-02 21:38:43,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-02 21:38:43,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-02 21:38:43,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-02 21:38:43,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-02 21:38:43,441 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 13 states. [2020-12-02 21:38:43,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-02 21:38:43,599 INFO L93 Difference]: Finished difference Result 157 states and 171 transitions. [2020-12-02 21:38:43,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-02 21:38:43,599 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 83 [2020-12-02 21:38:43,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-02 21:38:43,601 INFO L225 Difference]: With dead ends: 157 [2020-12-02 21:38:43,601 INFO L226 Difference]: Without dead ends: 149 [2020-12-02 21:38:43,604 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 [2020-12-02 21:38:43,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-12-02 21:38:43,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2020-12-02 21:38:43,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-12-02 21:38:43,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 163 transitions. [2020-12-02 21:38:43,620 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 163 transitions. Word has length 83 [2020-12-02 21:38:43,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-02 21:38:43,621 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 163 transitions. [2020-12-02 21:38:43,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-02 21:38:43,621 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 163 transitions. [2020-12-02 21:38:43,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-02 21:38:43,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-02 21:38:43,622 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] [2020-12-02 21:38:43,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-02 21:38:43,837 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]=== [2020-12-02 21:38:43,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-02 21:38:43,838 INFO L82 PathProgramCache]: Analyzing trace with hash -219254285, now seen corresponding path program 11 times [2020-12-02 21:38:43,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-02 21:38:43,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761352190] [2020-12-02 21:38:43,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-02 21:38:43,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-02 21:38:43,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [454260323] [2020-12-02 21:38:43,846 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 [2020-12-02 21:38:45,059 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-12-02 21:38:45,060 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-02 21:38:45,060 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 21:38:45,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-02 21:38:45,111 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-02 21:38:45,313 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-02 21:38:45,313 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-02 21:38:45,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-02 21:38:45,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 09:38:45 BoogieIcfgContainer [2020-12-02 21:38:45,627 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-02 21:38:45,628 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-02 21:38:45,628 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-02 21:38:45,628 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-02 21:38:45,629 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 09:38:23" (3/4) ... [2020-12-02 21:38:45,631 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-02 21:38:45,738 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-02 21:38:45,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-02 21:38:45,740 INFO L168 Benchmark]: Toolchain (without parser) took 23413.50 ms. Allocated memory was 44.0 MB in the beginning and 144.7 MB in the end (delta: 100.7 MB). Free memory was 27.6 MB in the beginning and 95.4 MB in the end (delta: -67.8 MB). Peak memory consumption was 32.7 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:45,741 INFO L168 Benchmark]: CDTParser took 0.65 ms. Allocated memory is still 33.6 MB. Free memory was 18.5 MB in the beginning and 18.5 MB in the end (delta: 43.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:38:45,742 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.34 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 27.4 MB in the end (delta: -35.1 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:45,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.36 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 25.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-02 21:38:45,743 INFO L168 Benchmark]: Boogie Preprocessor took 28.28 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:45,743 INFO L168 Benchmark]: RCFGBuilder took 737.42 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 24.6 MB in the beginning and 34.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:45,744 INFO L168 Benchmark]: TraceAbstraction took 22203.33 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 33.5 MB in the beginning and 101.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:45,744 INFO L168 Benchmark]: Witness Printer took 110.55 ms. Allocated memory is still 144.7 MB. Free memory was 101.7 MB in the beginning and 95.4 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-02 21:38:45,747 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.65 ms. Allocated memory is still 33.6 MB. Free memory was 18.5 MB in the beginning and 18.5 MB in the end (delta: 43.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.34 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 27.4 MB in the end (delta: -35.1 kB). Peak memory consumption was 9.0 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.36 ms. Allocated memory is still 44.0 MB. Free memory was 27.4 MB in the beginning and 25.8 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.28 ms. Allocated memory is still 44.0 MB. Free memory was 25.8 MB in the beginning and 24.6 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 737.42 ms. Allocated memory was 44.0 MB in the beginning and 54.5 MB in the end (delta: 10.5 MB). Free memory was 24.6 MB in the beginning and 34.0 MB in the end (delta: -9.4 MB). Peak memory consumption was 7.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 22203.33 ms. Allocated memory was 54.5 MB in the beginning and 144.7 MB in the end (delta: 90.2 MB). Free memory was 33.5 MB in the beginning and 101.7 MB in the end (delta: -68.2 MB). Peak memory consumption was 22.2 MB. Max. memory is 16.1 GB. * Witness Printer took 110.55 ms. Allocated memory is still 144.7 MB. Free memory was 101.7 MB in the beginning and 95.4 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: 22.0s, OverallIterations: 34, TraceHistogramMax: 10, AutomataDifference: 4.6s, 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, 1.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1372 GetRequests, 1086 SyntacticMatches, 1 SemanticMatches, 285 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 313 ImplicationChecksByTransitivity, 3.2s 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...