./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54a68f41 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_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 b0a100c456654412ca82e52238a96db2d4693b3d .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.1-54a68f4 [2020-12-03 16:08:57,401 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-03 16:08:57,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-03 16:08:57,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-03 16:08:57,467 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-03 16:08:57,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-03 16:08:57,476 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-03 16:08:57,483 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-03 16:08:57,486 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-03 16:08:57,495 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-03 16:08:57,497 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-03 16:08:57,503 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-03 16:08:57,503 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-03 16:08:57,506 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-03 16:08:57,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-03 16:08:57,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-03 16:08:57,513 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-03 16:08:57,517 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-03 16:08:57,521 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-03 16:08:57,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-03 16:08:57,532 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-03 16:08:57,536 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-03 16:08:57,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-03 16:08:57,540 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-03 16:08:57,547 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-03 16:08:57,548 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-03 16:08:57,548 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-03 16:08:57,549 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-03 16:08:57,551 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-03 16:08:57,553 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-03 16:08:57,553 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-03 16:08:57,554 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-03 16:08:57,556 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-03 16:08:57,557 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-03 16:08:57,559 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-03 16:08:57,559 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-03 16:08:57,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-03 16:08:57,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-03 16:08:57,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-03 16:08:57,566 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-03 16:08:57,567 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-03 16:08:57,568 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-03 16:08:57,604 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-03 16:08:57,605 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-03 16:08:57,606 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-03 16:08:57,606 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-03 16:08:57,607 INFO L138 SettingsManager]: * Use SBE=true [2020-12-03 16:08:57,607 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-03 16:08:57,607 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-03 16:08:57,608 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-03 16:08:57,608 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-03 16:08:57,608 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-03 16:08:57,609 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-03 16:08:57,609 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-03 16:08:57,609 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-03 16:08:57,609 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-03 16:08:57,610 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-03 16:08:57,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-03 16:08:57,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-03 16:08:57,611 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-03 16:08:57,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-03 16:08:57,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-03 16:08:57,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 16:08:57,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-03 16:08:57,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-03 16:08:57,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-03 16:08:57,613 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-03 16:08:57,613 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-03 16:08:57,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-03 16:08:57,614 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-03 16:08:57,614 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b0a100c456654412ca82e52238a96db2d4693b3d [2020-12-03 16:08:58,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-03 16:08:58,087 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-03 16:08:58,092 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-03 16:08:58,093 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-03 16:08:58,094 INFO L275 PluginConnector]: CDTParser initialized [2020-12-03 16:08:58,096 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c [2020-12-03 16:08:58,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5db92341/ec539c1a9dec4d91af72ca76dbbc20ba/FLAG972db3d25 [2020-12-03 16:08:58,810 INFO L306 CDTParser]: Found 1 translation units. [2020-12-03 16:08:58,813 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c [2020-12-03 16:08:58,822 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5db92341/ec539c1a9dec4d91af72ca76dbbc20ba/FLAG972db3d25 [2020-12-03 16:08:59,153 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5db92341/ec539c1a9dec4d91af72ca76dbbc20ba [2020-12-03 16:08:59,158 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-03 16:08:59,161 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-03 16:08:59,163 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-03 16:08:59,163 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-03 16:08:59,167 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-03 16:08:59,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,173 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b486276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59, skipping insertion in model container [2020-12-03 16:08:59,174 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,182 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-03 16:08:59,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-03 16:08:59,388 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c[490,503] [2020-12-03 16:08:59,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 16:08:59,421 INFO L203 MainTranslator]: Completed pre-run [2020-12-03 16:08:59,433 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/egcd3-ll_unwindbound10.c[490,503] [2020-12-03 16:08:59,444 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-03 16:08:59,461 INFO L208 MainTranslator]: Completed translation [2020-12-03 16:08:59,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59 WrapperNode [2020-12-03 16:08:59,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-03 16:08:59,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-03 16:08:59,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-03 16:08:59,464 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-03 16:08:59,472 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,481 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,506 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-03 16:08:59,507 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-03 16:08:59,507 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-03 16:08:59,507 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-03 16:08:59,516 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,524 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... [2020-12-03 16:08:59,535 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-03 16:08:59,536 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-03 16:08:59,536 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-03 16:08:59,536 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-03 16:08:59,537 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-03 16:08:59,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-03 16:08:59,632 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-03 16:08:59,632 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-03 16:08:59,632 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-03 16:08:59,919 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-03 16:08:59,919 INFO L299 CfgBuilder]: Removed 21 assume(true) statements. [2020-12-03 16:08:59,921 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:08:59 BoogieIcfgContainer [2020-12-03 16:08:59,921 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-03 16:08:59,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-03 16:08:59,923 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-03 16:08:59,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-03 16:08:59,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.12 04:08:59" (1/3) ... [2020-12-03 16:08:59,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206a355b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:08:59, skipping insertion in model container [2020-12-03 16:08:59,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.12 04:08:59" (2/3) ... [2020-12-03 16:08:59,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206a355b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.12 04:08:59, skipping insertion in model container [2020-12-03 16:08:59,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:08:59" (3/3) ... [2020-12-03 16:08:59,931 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd3-ll_unwindbound10.c [2020-12-03 16:08:59,952 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-03 16:08:59,957 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2020-12-03 16:08:59,971 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-12-03 16:09:00,023 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-03 16:09:00,023 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-03 16:09:00,024 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-03 16:09:00,024 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-03 16:09:00,024 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-03 16:09:00,024 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-03 16:09:00,024 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-03 16:09:00,024 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-03 16:09:00,053 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-12-03 16:09:00,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-03 16:09:00,060 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:00,061 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:00,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:00,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:00,079 INFO L82 PathProgramCache]: Analyzing trace with hash -1233339761, now seen corresponding path program 1 times [2020-12-03 16:09:00,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:00,090 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570463994] [2020-12-03 16:09:00,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:00,304 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:00,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570463994] [2020-12-03 16:09:00,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:00,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-03 16:09:00,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190431163] [2020-12-03 16:09:00,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-03 16:09:00,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:00,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-03 16:09:00,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 16:09:00,339 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-12-03 16:09:00,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:00,369 INFO L93 Difference]: Finished difference Result 77 states and 106 transitions. [2020-12-03 16:09:00,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-03 16:09:00,371 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-12-03 16:09:00,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:00,380 INFO L225 Difference]: With dead ends: 77 [2020-12-03 16:09:00,381 INFO L226 Difference]: Without dead ends: 36 [2020-12-03 16:09:00,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-03 16:09:00,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-12-03 16:09:00,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-12-03 16:09:00,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-12-03 16:09:00,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-12-03 16:09:00,425 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 10 [2020-12-03 16:09:00,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:00,426 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-12-03 16:09:00,426 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-03 16:09:00,426 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-12-03 16:09:00,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-03 16:09:00,427 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:00,427 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:00,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-03 16:09:00,428 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:00,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:00,429 INFO L82 PathProgramCache]: Analyzing trace with hash -1507359540, now seen corresponding path program 1 times [2020-12-03 16:09:00,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:00,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497927428] [2020-12-03 16:09:00,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:00,472 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:00,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464571036] [2020-12-03 16:09:00,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:00,592 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-03 16:09:00,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:00,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:00,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497927428] [2020-12-03 16:09:00,690 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:00,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464571036] [2020-12-03 16:09:00,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:00,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-03 16:09:00,691 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628798524] [2020-12-03 16:09:00,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-03 16:09:00,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:00,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-03 16:09:00,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 16:09:00,695 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 4 states. [2020-12-03 16:09:00,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:00,718 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-12-03 16:09:00,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-03 16:09:00,719 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-12-03 16:09:00,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:00,720 INFO L225 Difference]: With dead ends: 42 [2020-12-03 16:09:00,720 INFO L226 Difference]: Without dead ends: 38 [2020-12-03 16:09:00,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-03 16:09:00,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-12-03 16:09:00,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-12-03 16:09:00,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-12-03 16:09:00,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-12-03 16:09:00,732 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 11 [2020-12-03 16:09:00,733 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:00,733 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-12-03 16:09:00,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-03 16:09:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-12-03 16:09:00,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-03 16:09:00,737 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:00,737 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:00,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-03 16:09:00,938 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:00,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:00,940 INFO L82 PathProgramCache]: Analyzing trace with hash 515746917, now seen corresponding path program 1 times [2020-12-03 16:09:00,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:00,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622503149] [2020-12-03 16:09:00,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:00,969 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:00,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106048670] [2020-12-03 16:09:00,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:01,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 16:09:01,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:01,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:01,132 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622503149] [2020-12-03 16:09:01,132 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:01,133 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106048670] [2020-12-03 16:09:01,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:01,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:09:01,134 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363558232] [2020-12-03 16:09:01,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:09:01,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:01,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:09:01,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:01,139 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-12-03 16:09:01,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:01,290 INFO L93 Difference]: Finished difference Result 66 states and 75 transitions. [2020-12-03 16:09:01,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 16:09:01,290 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-12-03 16:09:01,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:01,292 INFO L225 Difference]: With dead ends: 66 [2020-12-03 16:09:01,292 INFO L226 Difference]: Without dead ends: 62 [2020-12-03 16:09:01,293 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:01,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-12-03 16:09:01,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 39. [2020-12-03 16:09:01,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-12-03 16:09:01,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-12-03 16:09:01,301 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 12 [2020-12-03 16:09:01,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:01,301 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-12-03 16:09:01,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:09:01,302 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-12-03 16:09:01,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-03 16:09:01,302 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:01,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:01,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:01,517 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:01,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:01,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1270616931, now seen corresponding path program 1 times [2020-12-03 16:09:01,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:01,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863502530] [2020-12-03 16:09:01,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:01,539 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:01,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1213753466] [2020-12-03 16:09:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:01,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:01,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-03 16:09:01,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:01,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:01,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863502530] [2020-12-03 16:09:01,773 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:01,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213753466] [2020-12-03 16:09:01,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:01,773 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-03 16:09:01,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568838354] [2020-12-03 16:09:01,774 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:01,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:01,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:01,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:01,776 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 8 states. [2020-12-03 16:09:01,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:01,956 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-12-03 16:09:01,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:09:01,957 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-12-03 16:09:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:01,958 INFO L225 Difference]: With dead ends: 62 [2020-12-03 16:09:01,958 INFO L226 Difference]: Without dead ends: 60 [2020-12-03 16:09:01,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:01,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-03 16:09:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 53. [2020-12-03 16:09:01,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-12-03 16:09:01,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 65 transitions. [2020-12-03 16:09:01,969 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 65 transitions. Word has length 16 [2020-12-03 16:09:01,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:01,970 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 65 transitions. [2020-12-03 16:09:01,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:01,970 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 65 transitions. [2020-12-03 16:09:01,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-12-03 16:09:01,971 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:01,971 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:02,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:02,187 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:02,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:02,188 INFO L82 PathProgramCache]: Analyzing trace with hash -648504839, now seen corresponding path program 1 times [2020-12-03 16:09:02,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:02,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858393376] [2020-12-03 16:09:02,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:02,206 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:02,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2106827716] [2020-12-03 16:09:02,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:02,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:02,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 16:09:02,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:02,317 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:02,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858393376] [2020-12-03 16:09:02,318 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:02,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2106827716] [2020-12-03 16:09:02,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:02,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-03 16:09:02,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042328518] [2020-12-03 16:09:02,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:09:02,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:02,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:09:02,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:02,321 INFO L87 Difference]: Start difference. First operand 53 states and 65 transitions. Second operand 5 states. [2020-12-03 16:09:02,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:02,348 INFO L93 Difference]: Finished difference Result 85 states and 103 transitions. [2020-12-03 16:09:02,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 16:09:02,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-12-03 16:09:02,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:02,351 INFO L225 Difference]: With dead ends: 85 [2020-12-03 16:09:02,351 INFO L226 Difference]: Without dead ends: 55 [2020-12-03 16:09:02,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:02,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-12-03 16:09:02,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-12-03 16:09:02,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-12-03 16:09:02,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 67 transitions. [2020-12-03 16:09:02,362 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 67 transitions. Word has length 17 [2020-12-03 16:09:02,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:02,362 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 67 transitions. [2020-12-03 16:09:02,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:09:02,363 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 67 transitions. [2020-12-03 16:09:02,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 16:09:02,363 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:02,364 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:02,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:02,577 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:02,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:02,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1354097033, now seen corresponding path program 1 times [2020-12-03 16:09:02,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:02,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227350592] [2020-12-03 16:09:02,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:02,597 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:02,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628404400] [2020-12-03 16:09:02,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:02,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 16:09:02,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:02,703 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:02,703 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227350592] [2020-12-03 16:09:02,703 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:02,704 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628404400] [2020-12-03 16:09:02,704 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:02,704 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-12-03 16:09:02,705 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133025001] [2020-12-03 16:09:02,705 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 16:09:02,705 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:02,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 16:09:02,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:09:02,706 INFO L87 Difference]: Start difference. First operand 55 states and 67 transitions. Second operand 6 states. [2020-12-03 16:09:02,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:02,747 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-12-03 16:09:02,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-03 16:09:02,748 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-12-03 16:09:02,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:02,749 INFO L225 Difference]: With dead ends: 64 [2020-12-03 16:09:02,749 INFO L226 Difference]: Without dead ends: 60 [2020-12-03 16:09:02,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:02,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-12-03 16:09:02,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-12-03 16:09:02,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-03 16:09:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 72 transitions. [2020-12-03 16:09:02,759 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 72 transitions. Word has length 18 [2020-12-03 16:09:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:02,759 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 72 transitions. [2020-12-03 16:09:02,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 16:09:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 72 transitions. [2020-12-03 16:09:02,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-03 16:09:02,760 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:02,760 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:02,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-12-03 16:09:02,975 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:02,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:02,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1292001664, now seen corresponding path program 1 times [2020-12-03 16:09:02,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:02,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713762809] [2020-12-03 16:09:02,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:02,992 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:02,993 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [885360334] [2020-12-03 16:09:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:03,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:03,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-03 16:09:03,049 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:03,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:03,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713762809] [2020-12-03 16:09:03,152 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:03,152 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885360334] [2020-12-03 16:09:03,152 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:03,152 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-03 16:09:03,153 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331310798] [2020-12-03 16:09:03,153 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:03,153 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:03,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:03,154 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:03,154 INFO L87 Difference]: Start difference. First operand 59 states and 72 transitions. Second operand 8 states. [2020-12-03 16:09:03,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:03,364 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-12-03 16:09:03,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:09:03,364 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-12-03 16:09:03,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:03,365 INFO L225 Difference]: With dead ends: 66 [2020-12-03 16:09:03,365 INFO L226 Difference]: Without dead ends: 64 [2020-12-03 16:09:03,366 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:03,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-03 16:09:03,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-12-03 16:09:03,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-12-03 16:09:03,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-12-03 16:09:03,374 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 18 [2020-12-03 16:09:03,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:03,374 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-12-03 16:09:03,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:03,374 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-12-03 16:09:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-03 16:09:03,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:03,375 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:03,589 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:03,590 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:03,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:03,591 INFO L82 PathProgramCache]: Analyzing trace with hash 971917338, now seen corresponding path program 1 times [2020-12-03 16:09:03,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:03,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674318614] [2020-12-03 16:09:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:03,607 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:03,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1777142113] [2020-12-03 16:09:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:03,659 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-03 16:09:03,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:03,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:03,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674318614] [2020-12-03 16:09:03,728 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:03,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777142113] [2020-12-03 16:09:03,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:03,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-03 16:09:03,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855693089] [2020-12-03 16:09:03,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 16:09:03,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 16:09:03,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:03,731 INFO L87 Difference]: Start difference. First operand 59 states and 71 transitions. Second operand 7 states. [2020-12-03 16:09:03,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:03,944 INFO L93 Difference]: Finished difference Result 191 states and 227 transitions. [2020-12-03 16:09:03,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-03 16:09:03,945 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-12-03 16:09:03,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:03,947 INFO L225 Difference]: With dead ends: 191 [2020-12-03 16:09:03,947 INFO L226 Difference]: Without dead ends: 187 [2020-12-03 16:09:03,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-12-03 16:09:03,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-03 16:09:03,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 91. [2020-12-03 16:09:03,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-12-03 16:09:03,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 119 transitions. [2020-12-03 16:09:03,964 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 119 transitions. Word has length 19 [2020-12-03 16:09:03,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:03,965 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 119 transitions. [2020-12-03 16:09:03,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 16:09:03,965 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 119 transitions. [2020-12-03 16:09:03,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-03 16:09:03,966 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:03,966 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:04,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:04,173 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:04,173 INFO L82 PathProgramCache]: Analyzing trace with hash -367893245, now seen corresponding path program 1 times [2020-12-03 16:09:04,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:04,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845811607] [2020-12-03 16:09:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:04,189 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:04,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [118262289] [2020-12-03 16:09:04,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:04,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:04,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-03 16:09:04,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:04,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:04,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845811607] [2020-12-03 16:09:04,352 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:04,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118262289] [2020-12-03 16:09:04,352 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:04,352 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-03 16:09:04,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707114076] [2020-12-03 16:09:04,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:04,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:04,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:04,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:04,354 INFO L87 Difference]: Start difference. First operand 91 states and 119 transitions. Second operand 8 states. [2020-12-03 16:09:04,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:04,546 INFO L93 Difference]: Finished difference Result 111 states and 139 transitions. [2020-12-03 16:09:04,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:09:04,546 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-12-03 16:09:04,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:04,547 INFO L225 Difference]: With dead ends: 111 [2020-12-03 16:09:04,548 INFO L226 Difference]: Without dead ends: 109 [2020-12-03 16:09:04,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:04,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-12-03 16:09:04,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 101. [2020-12-03 16:09:04,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-12-03 16:09:04,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2020-12-03 16:09:04,561 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 20 [2020-12-03 16:09:04,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:04,561 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2020-12-03 16:09:04,561 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:04,561 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2020-12-03 16:09:04,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-03 16:09:04,562 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:04,563 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:04,776 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-12-03 16:09:04,777 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:04,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:04,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1357932506, now seen corresponding path program 1 times [2020-12-03 16:09:04,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:04,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575662589] [2020-12-03 16:09:04,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:04,792 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:04,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [911597659] [2020-12-03 16:09:04,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:04,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:04,849 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-03 16:09:04,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:04,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:04,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575662589] [2020-12-03 16:09:04,906 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:04,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911597659] [2020-12-03 16:09:04,906 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:04,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:09:04,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409041999] [2020-12-03 16:09:04,907 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:09:04,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:04,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:09:04,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:04,909 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand 5 states. [2020-12-03 16:09:05,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:05,032 INFO L93 Difference]: Finished difference Result 226 states and 307 transitions. [2020-12-03 16:09:05,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 16:09:05,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-12-03 16:09:05,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:05,034 INFO L225 Difference]: With dead ends: 226 [2020-12-03 16:09:05,034 INFO L226 Difference]: Without dead ends: 224 [2020-12-03 16:09:05,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:05,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-12-03 16:09:05,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 137. [2020-12-03 16:09:05,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-03 16:09:05,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 179 transitions. [2020-12-03 16:09:05,054 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 179 transitions. Word has length 22 [2020-12-03 16:09:05,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:05,054 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 179 transitions. [2020-12-03 16:09:05,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:09:05,055 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 179 transitions. [2020-12-03 16:09:05,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-03 16:09:05,056 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:05,056 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:05,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:05,272 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:05,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:05,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1235592658, now seen corresponding path program 1 times [2020-12-03 16:09:05,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:05,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429975985] [2020-12-03 16:09:05,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:05,286 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:05,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2102610] [2020-12-03 16:09:05,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:05,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-03 16:09:05,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:05,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429975985] [2020-12-03 16:09:05,445 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:05,445 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102610] [2020-12-03 16:09:05,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:05,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-03 16:09:05,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239122211] [2020-12-03 16:09:05,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 16:09:05,446 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:05,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 16:09:05,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:05,447 INFO L87 Difference]: Start difference. First operand 137 states and 179 transitions. Second operand 7 states. [2020-12-03 16:09:05,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:05,611 INFO L93 Difference]: Finished difference Result 210 states and 273 transitions. [2020-12-03 16:09:05,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-03 16:09:05,612 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-12-03 16:09:05,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:05,613 INFO L225 Difference]: With dead ends: 210 [2020-12-03 16:09:05,613 INFO L226 Difference]: Without dead ends: 208 [2020-12-03 16:09:05,614 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:09:05,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-03 16:09:05,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 191. [2020-12-03 16:09:05,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-12-03 16:09:05,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 257 transitions. [2020-12-03 16:09:05,635 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 257 transitions. Word has length 23 [2020-12-03 16:09:05,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:05,635 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 257 transitions. [2020-12-03 16:09:05,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 16:09:05,636 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 257 transitions. [2020-12-03 16:09:05,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-03 16:09:05,636 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:05,637 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:05,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:05,852 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:05,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:05,853 INFO L82 PathProgramCache]: Analyzing trace with hash -138249927, now seen corresponding path program 1 times [2020-12-03 16:09:05,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:05,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584388840] [2020-12-03 16:09:05,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:05,873 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:05,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1682408787] [2020-12-03 16:09:05,873 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 [2020-12-03 16:09:05,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:05,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-03 16:09:05,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:05,987 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584388840] [2020-12-03 16:09:05,987 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:05,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682408787] [2020-12-03 16:09:05,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:05,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:09:05,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733470564] [2020-12-03 16:09:05,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-03 16:09:05,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:05,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-03 16:09:05,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:09:05,997 INFO L87 Difference]: Start difference. First operand 191 states and 257 transitions. Second operand 6 states. [2020-12-03 16:09:06,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:06,041 INFO L93 Difference]: Finished difference Result 280 states and 375 transitions. [2020-12-03 16:09:06,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 16:09:06,042 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-12-03 16:09:06,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:06,043 INFO L225 Difference]: With dead ends: 280 [2020-12-03 16:09:06,043 INFO L226 Difference]: Without dead ends: 191 [2020-12-03 16:09:06,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:09:06,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-03 16:09:06,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 191. [2020-12-03 16:09:06,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-12-03 16:09:06,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 256 transitions. [2020-12-03 16:09:06,064 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 256 transitions. Word has length 23 [2020-12-03 16:09:06,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:06,074 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 256 transitions. [2020-12-03 16:09:06,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-03 16:09:06,075 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 256 transitions. [2020-12-03 16:09:06,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-03 16:09:06,078 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:06,079 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:06,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-12-03 16:09:06,293 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash -265418908, now seen corresponding path program 1 times [2020-12-03 16:09:06,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:06,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33184533] [2020-12-03 16:09:06,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:06,305 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:06,305 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587880160] [2020-12-03 16:09:06,306 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 [2020-12-03 16:09:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:06,359 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-03 16:09:06,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:06,414 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:06,414 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33184533] [2020-12-03 16:09:06,415 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:06,415 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587880160] [2020-12-03 16:09:06,415 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:06,415 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-12-03 16:09:06,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004079093] [2020-12-03 16:09:06,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-03 16:09:06,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:06,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-03 16:09:06,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:06,417 INFO L87 Difference]: Start difference. First operand 191 states and 256 transitions. Second operand 7 states. [2020-12-03 16:09:06,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:06,468 INFO L93 Difference]: Finished difference Result 303 states and 411 transitions. [2020-12-03 16:09:06,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:09:06,468 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-12-03 16:09:06,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:06,470 INFO L225 Difference]: With dead ends: 303 [2020-12-03 16:09:06,470 INFO L226 Difference]: Without dead ends: 196 [2020-12-03 16:09:06,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:06,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-03 16:09:06,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 195. [2020-12-03 16:09:06,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-12-03 16:09:06,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 260 transitions. [2020-12-03 16:09:06,491 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 260 transitions. Word has length 24 [2020-12-03 16:09:06,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:06,491 INFO L481 AbstractCegarLoop]: Abstraction has 195 states and 260 transitions. [2020-12-03 16:09:06,492 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-03 16:09:06,492 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 260 transitions. [2020-12-03 16:09:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-03 16:09:06,493 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:06,493 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:06,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-03 16:09:06,709 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:06,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:06,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1931632236, now seen corresponding path program 2 times [2020-12-03 16:09:06,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:06,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942069028] [2020-12-03 16:09:06,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:06,720 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:06,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1765145689] [2020-12-03 16:09:06,721 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 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 [2020-12-03 16:09:06,783 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:06,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:06,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-03 16:09:06,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:06,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:06,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942069028] [2020-12-03 16:09:06,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:06,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1765145689] [2020-12-03 16:09:06,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:06,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-03 16:09:06,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523314594] [2020-12-03 16:09:06,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:06,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:06,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:06,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:06,868 INFO L87 Difference]: Start difference. First operand 195 states and 260 transitions. Second operand 8 states. [2020-12-03 16:09:06,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:06,941 INFO L93 Difference]: Finished difference Result 223 states and 292 transitions. [2020-12-03 16:09:06,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-03 16:09:06,942 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-03 16:09:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:06,944 INFO L225 Difference]: With dead ends: 223 [2020-12-03 16:09:06,944 INFO L226 Difference]: Without dead ends: 219 [2020-12-03 16:09:06,946 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:09:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-12-03 16:09:06,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 202. [2020-12-03 16:09:06,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-03 16:09:06,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 268 transitions. [2020-12-03 16:09:06,966 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 268 transitions. Word has length 25 [2020-12-03 16:09:06,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:06,967 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 268 transitions. [2020-12-03 16:09:06,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:06,967 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 268 transitions. [2020-12-03 16:09:06,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-03 16:09:06,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:06,968 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:07,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-03 16:09:07,182 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:07,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:07,182 INFO L82 PathProgramCache]: Analyzing trace with hash 1993727605, now seen corresponding path program 1 times [2020-12-03 16:09:07,183 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:07,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088040658] [2020-12-03 16:09:07,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:07,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:07,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [303462443] [2020-12-03 16:09:07,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-12-03 16:09:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:07,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-03 16:09:07,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:07,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:07,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088040658] [2020-12-03 16:09:07,406 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:07,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [303462443] [2020-12-03 16:09:07,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:07,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-03 16:09:07,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950760344] [2020-12-03 16:09:07,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:07,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:07,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:07,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:07,408 INFO L87 Difference]: Start difference. First operand 202 states and 268 transitions. Second operand 8 states. [2020-12-03 16:09:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:07,643 INFO L93 Difference]: Finished difference Result 216 states and 276 transitions. [2020-12-03 16:09:07,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-03 16:09:07,643 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2020-12-03 16:09:07,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:07,645 INFO L225 Difference]: With dead ends: 216 [2020-12-03 16:09:07,645 INFO L226 Difference]: Without dead ends: 214 [2020-12-03 16:09:07,646 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-12-03 16:09:07,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-03 16:09:07,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 202. [2020-12-03 16:09:07,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-03 16:09:07,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 266 transitions. [2020-12-03 16:09:07,666 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 266 transitions. Word has length 25 [2020-12-03 16:09:07,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:07,666 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 266 transitions. [2020-12-03 16:09:07,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:07,666 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 266 transitions. [2020-12-03 16:09:07,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-03 16:09:07,667 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:07,667 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:07,882 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:07,883 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:07,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:07,883 INFO L82 PathProgramCache]: Analyzing trace with hash 416971704, now seen corresponding path program 1 times [2020-12-03 16:09:07,884 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:07,884 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518137411] [2020-12-03 16:09:07,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:07,901 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:07,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [329481981] [2020-12-03 16:09:07,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:07,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:07,962 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 18 conjunts are in the unsatisfiable core [2020-12-03 16:09:07,964 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:08,050 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:08,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518137411] [2020-12-03 16:09:08,050 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:08,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329481981] [2020-12-03 16:09:08,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:08,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-03 16:09:08,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915197904] [2020-12-03 16:09:08,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 16:09:08,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:08,052 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 16:09:08,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-12-03 16:09:08,052 INFO L87 Difference]: Start difference. First operand 202 states and 266 transitions. Second operand 9 states. [2020-12-03 16:09:08,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:08,359 INFO L93 Difference]: Finished difference Result 336 states and 421 transitions. [2020-12-03 16:09:08,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-03 16:09:08,359 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-12-03 16:09:08,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:08,362 INFO L225 Difference]: With dead ends: 336 [2020-12-03 16:09:08,362 INFO L226 Difference]: Without dead ends: 334 [2020-12-03 16:09:08,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-12-03 16:09:08,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2020-12-03 16:09:08,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 243. [2020-12-03 16:09:08,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-12-03 16:09:08,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 321 transitions. [2020-12-03 16:09:08,384 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 321 transitions. Word has length 27 [2020-12-03 16:09:08,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:08,385 INFO L481 AbstractCegarLoop]: Abstraction has 243 states and 321 transitions. [2020-12-03 16:09:08,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 16:09:08,385 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 321 transitions. [2020-12-03 16:09:08,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-03 16:09:08,385 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:08,385 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:08,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-12-03 16:09:08,599 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:08,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:08,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1345328893, now seen corresponding path program 2 times [2020-12-03 16:09:08,600 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:08,600 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1946075358] [2020-12-03 16:09:08,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:08,610 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:08,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1005878679] [2020-12-03 16:09:08,610 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 [2020-12-03 16:09:08,674 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:08,674 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:08,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-03 16:09:08,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:08,734 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:08,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1946075358] [2020-12-03 16:09:08,734 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:08,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005878679] [2020-12-03 16:09:08,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:08,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:09:08,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342015590] [2020-12-03 16:09:08,739 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:09:08,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:08,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:09:08,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:08,739 INFO L87 Difference]: Start difference. First operand 243 states and 321 transitions. Second operand 5 states. [2020-12-03 16:09:08,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:08,866 INFO L93 Difference]: Finished difference Result 530 states and 713 transitions. [2020-12-03 16:09:08,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 16:09:08,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-12-03 16:09:08,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:08,870 INFO L225 Difference]: With dead ends: 530 [2020-12-03 16:09:08,870 INFO L226 Difference]: Without dead ends: 425 [2020-12-03 16:09:08,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:08,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 425 states. [2020-12-03 16:09:08,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 425 to 267. [2020-12-03 16:09:08,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 267 states. [2020-12-03 16:09:08,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 355 transitions. [2020-12-03 16:09:08,902 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 355 transitions. Word has length 30 [2020-12-03 16:09:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:08,902 INFO L481 AbstractCegarLoop]: Abstraction has 267 states and 355 transitions. [2020-12-03 16:09:08,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:09:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 355 transitions. [2020-12-03 16:09:08,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-03 16:09:08,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:08,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:09,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-12-03 16:09:09,119 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:09,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:09,120 INFO L82 PathProgramCache]: Analyzing trace with hash -28513692, now seen corresponding path program 1 times [2020-12-03 16:09:09,120 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:09,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720969050] [2020-12-03 16:09:09,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:09,129 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:09,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [51501715] [2020-12-03 16:09:09,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:09,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:09,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 11 conjunts are in the unsatisfiable core [2020-12-03 16:09:09,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:09,267 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:09,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720969050] [2020-12-03 16:09:09,267 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:09,268 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51501715] [2020-12-03 16:09:09,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:09,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-03 16:09:09,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946983373] [2020-12-03 16:09:09,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:09,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:09,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:09,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:09,269 INFO L87 Difference]: Start difference. First operand 267 states and 355 transitions. Second operand 8 states. [2020-12-03 16:09:09,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:09,346 INFO L93 Difference]: Finished difference Result 487 states and 657 transitions. [2020-12-03 16:09:09,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-03 16:09:09,346 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-12-03 16:09:09,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:09,348 INFO L225 Difference]: With dead ends: 487 [2020-12-03 16:09:09,348 INFO L226 Difference]: Without dead ends: 285 [2020-12-03 16:09:09,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:09:09,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2020-12-03 16:09:09,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 281. [2020-12-03 16:09:09,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 281 states. [2020-12-03 16:09:09,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 281 states to 281 states and 370 transitions. [2020-12-03 16:09:09,374 INFO L78 Accepts]: Start accepts. Automaton has 281 states and 370 transitions. Word has length 30 [2020-12-03 16:09:09,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:09,374 INFO L481 AbstractCegarLoop]: Abstraction has 281 states and 370 transitions. [2020-12-03 16:09:09,374 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:09,374 INFO L276 IsEmpty]: Start isEmpty. Operand 281 states and 370 transitions. [2020-12-03 16:09:09,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-12-03 16:09:09,375 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:09,375 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, 1, 1] [2020-12-03 16:09:09,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-12-03 16:09:09,591 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:09,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:09,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1302269029, now seen corresponding path program 1 times [2020-12-03 16:09:09,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:09,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760539937] [2020-12-03 16:09:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:09,602 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:09,602 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2012098560] [2020-12-03 16:09:09,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:09,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:09,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-03 16:09:09,650 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:09,766 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:09,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760539937] [2020-12-03 16:09:09,766 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:09,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2012098560] [2020-12-03 16:09:09,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:09,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-03 16:09:09,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573400440] [2020-12-03 16:09:09,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 16:09:09,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:09,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 16:09:09,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-12-03 16:09:09,768 INFO L87 Difference]: Start difference. First operand 281 states and 370 transitions. Second operand 9 states. [2020-12-03 16:09:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:10,124 INFO L93 Difference]: Finished difference Result 363 states and 478 transitions. [2020-12-03 16:09:10,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-03 16:09:10,125 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-12-03 16:09:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:10,127 INFO L225 Difference]: With dead ends: 363 [2020-12-03 16:09:10,127 INFO L226 Difference]: Without dead ends: 361 [2020-12-03 16:09:10,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=181, Unknown=0, NotChecked=0, Total=272 [2020-12-03 16:09:10,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2020-12-03 16:09:10,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 291. [2020-12-03 16:09:10,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 291 states. [2020-12-03 16:09:10,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 382 transitions. [2020-12-03 16:09:10,156 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 382 transitions. Word has length 32 [2020-12-03 16:09:10,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:10,157 INFO L481 AbstractCegarLoop]: Abstraction has 291 states and 382 transitions. [2020-12-03 16:09:10,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 16:09:10,157 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 382 transitions. [2020-12-03 16:09:10,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-03 16:09:10,158 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:10,158 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:10,371 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:10,372 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:10,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:10,373 INFO L82 PathProgramCache]: Analyzing trace with hash 885134474, now seen corresponding path program 1 times [2020-12-03 16:09:10,373 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:10,373 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717430171] [2020-12-03 16:09:10,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:10,383 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:10,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [661558586] [2020-12-03 16:09:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:10,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:10,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 62 conjunts are in the unsatisfiable core [2020-12-03 16:09:10,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:10,869 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:10,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717430171] [2020-12-03 16:09:10,870 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:10,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661558586] [2020-12-03 16:09:10,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:10,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-03 16:09:10,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094825213] [2020-12-03 16:09:10,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-03 16:09:10,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:10,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-03 16:09:10,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-12-03 16:09:10,872 INFO L87 Difference]: Start difference. First operand 291 states and 382 transitions. Second operand 13 states. [2020-12-03 16:09:11,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:11,661 INFO L93 Difference]: Finished difference Result 472 states and 619 transitions. [2020-12-03 16:09:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-03 16:09:11,662 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-12-03 16:09:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:11,664 INFO L225 Difference]: With dead ends: 472 [2020-12-03 16:09:11,664 INFO L226 Difference]: Without dead ends: 355 [2020-12-03 16:09:11,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=123, Invalid=429, Unknown=0, NotChecked=0, Total=552 [2020-12-03 16:09:11,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2020-12-03 16:09:11,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 316. [2020-12-03 16:09:11,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 316 states. [2020-12-03 16:09:11,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 316 states to 316 states and 415 transitions. [2020-12-03 16:09:11,694 INFO L78 Accepts]: Start accepts. Automaton has 316 states and 415 transitions. Word has length 33 [2020-12-03 16:09:11,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:11,694 INFO L481 AbstractCegarLoop]: Abstraction has 316 states and 415 transitions. [2020-12-03 16:09:11,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-03 16:09:11,694 INFO L276 IsEmpty]: Start isEmpty. Operand 316 states and 415 transitions. [2020-12-03 16:09:11,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-12-03 16:09:11,695 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:11,695 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:11,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:11,912 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:11,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:11,912 INFO L82 PathProgramCache]: Analyzing trace with hash 731699348, now seen corresponding path program 1 times [2020-12-03 16:09:11,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:11,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169556109] [2020-12-03 16:09:11,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:11,922 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:11,922 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2127929610] [2020-12-03 16:09:11,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:11,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:11,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-03 16:09:11,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:12,070 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:12,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169556109] [2020-12-03 16:09:12,070 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:12,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127929610] [2020-12-03 16:09:12,070 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:12,070 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-03 16:09:12,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1181909791] [2020-12-03 16:09:12,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 16:09:12,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:12,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 16:09:12,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-03 16:09:12,077 INFO L87 Difference]: Start difference. First operand 316 states and 415 transitions. Second operand 9 states. [2020-12-03 16:09:12,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:12,175 INFO L93 Difference]: Finished difference Result 491 states and 655 transitions. [2020-12-03 16:09:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-03 16:09:12,176 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2020-12-03 16:09:12,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:12,178 INFO L225 Difference]: With dead ends: 491 [2020-12-03 16:09:12,179 INFO L226 Difference]: Without dead ends: 342 [2020-12-03 16:09:12,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:12,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2020-12-03 16:09:12,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 331. [2020-12-03 16:09:12,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 331 states. [2020-12-03 16:09:12,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 432 transitions. [2020-12-03 16:09:12,210 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 432 transitions. Word has length 38 [2020-12-03 16:09:12,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:12,210 INFO L481 AbstractCegarLoop]: Abstraction has 331 states and 432 transitions. [2020-12-03 16:09:12,210 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 16:09:12,211 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 432 transitions. [2020-12-03 16:09:12,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-03 16:09:12,218 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:12,218 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:12,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-12-03 16:09:12,433 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:12,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:12,434 INFO L82 PathProgramCache]: Analyzing trace with hash -1517440196, now seen corresponding path program 1 times [2020-12-03 16:09:12,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:12,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716071854] [2020-12-03 16:09:12,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:12,444 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:12,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [395768526] [2020-12-03 16:09:12,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:12,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:12,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-03 16:09:12,517 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:12,621 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:12,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716071854] [2020-12-03 16:09:12,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:12,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395768526] [2020-12-03 16:09:12,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:12,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-03 16:09:12,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304214171] [2020-12-03 16:09:12,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-03 16:09:12,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:12,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-03 16:09:12,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:09:12,623 INFO L87 Difference]: Start difference. First operand 331 states and 432 transitions. Second operand 10 states. [2020-12-03 16:09:12,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:12,730 INFO L93 Difference]: Finished difference Result 402 states and 514 transitions. [2020-12-03 16:09:12,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-03 16:09:12,731 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-12-03 16:09:12,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:12,733 INFO L225 Difference]: With dead ends: 402 [2020-12-03 16:09:12,734 INFO L226 Difference]: Without dead ends: 398 [2020-12-03 16:09:12,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-12-03 16:09:12,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2020-12-03 16:09:12,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 339. [2020-12-03 16:09:12,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 339 states. [2020-12-03 16:09:12,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 442 transitions. [2020-12-03 16:09:12,765 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 442 transitions. Word has length 39 [2020-12-03 16:09:12,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:12,765 INFO L481 AbstractCegarLoop]: Abstraction has 339 states and 442 transitions. [2020-12-03 16:09:12,765 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-03 16:09:12,765 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 442 transitions. [2020-12-03 16:09:12,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-12-03 16:09:12,766 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:12,766 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:12,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-12-03 16:09:12,980 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:12,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:12,980 INFO L82 PathProgramCache]: Analyzing trace with hash -631528752, now seen corresponding path program 1 times [2020-12-03 16:09:12,981 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:12,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756357965] [2020-12-03 16:09:12,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:12,994 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:12,994 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682433753] [2020-12-03 16:09:12,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:13,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:13,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-03 16:09:13,066 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756357965] [2020-12-03 16:09:13,187 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:13,187 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682433753] [2020-12-03 16:09:13,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:13,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-03 16:09:13,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851123483] [2020-12-03 16:09:13,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-03 16:09:13,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-03 16:09:13,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:09:13,189 INFO L87 Difference]: Start difference. First operand 339 states and 442 transitions. Second operand 10 states. [2020-12-03 16:09:14,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:14,069 INFO L93 Difference]: Finished difference Result 716 states and 925 transitions. [2020-12-03 16:09:14,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-12-03 16:09:14,070 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-12-03 16:09:14,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:14,074 INFO L225 Difference]: With dead ends: 716 [2020-12-03 16:09:14,074 INFO L226 Difference]: Without dead ends: 714 [2020-12-03 16:09:14,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 382 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=327, Invalid=1079, Unknown=0, NotChecked=0, Total=1406 [2020-12-03 16:09:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 714 states. [2020-12-03 16:09:14,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 714 to 378. [2020-12-03 16:09:14,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 378 states. [2020-12-03 16:09:14,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 494 transitions. [2020-12-03 16:09:14,111 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 494 transitions. Word has length 39 [2020-12-03 16:09:14,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:14,111 INFO L481 AbstractCegarLoop]: Abstraction has 378 states and 494 transitions. [2020-12-03 16:09:14,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-03 16:09:14,111 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 494 transitions. [2020-12-03 16:09:14,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-03 16:09:14,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:14,112 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:14,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:14,326 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:14,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:14,326 INFO L82 PathProgramCache]: Analyzing trace with hash 203246581, now seen corresponding path program 2 times [2020-12-03 16:09:14,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:14,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757255741] [2020-12-03 16:09:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:14,338 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:14,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752625391] [2020-12-03 16:09:14,339 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 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 [2020-12-03 16:09:14,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:14,397 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:14,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-03 16:09:14,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:14,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757255741] [2020-12-03 16:09:14,472 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:14,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752625391] [2020-12-03 16:09:14,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:14,473 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-03 16:09:14,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873785826] [2020-12-03 16:09:14,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-03 16:09:14,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:14,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-03 16:09:14,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-03 16:09:14,474 INFO L87 Difference]: Start difference. First operand 378 states and 494 transitions. Second operand 8 states. [2020-12-03 16:09:14,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:14,985 INFO L93 Difference]: Finished difference Result 948 states and 1245 transitions. [2020-12-03 16:09:14,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-03 16:09:14,986 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-12-03 16:09:14,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:14,990 INFO L225 Difference]: With dead ends: 948 [2020-12-03 16:09:14,990 INFO L226 Difference]: Without dead ends: 944 [2020-12-03 16:09:14,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-12-03 16:09:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2020-12-03 16:09:15,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 452. [2020-12-03 16:09:15,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 452 states. [2020-12-03 16:09:15,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 597 transitions. [2020-12-03 16:09:15,037 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 597 transitions. Word has length 40 [2020-12-03 16:09:15,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:15,038 INFO L481 AbstractCegarLoop]: Abstraction has 452 states and 597 transitions. [2020-12-03 16:09:15,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-03 16:09:15,038 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 597 transitions. [2020-12-03 16:09:15,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-03 16:09:15,039 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:15,039 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:15,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-12-03 16:09:15,254 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:15,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:15,254 INFO L82 PathProgramCache]: Analyzing trace with hash 905429967, now seen corresponding path program 1 times [2020-12-03 16:09:15,255 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:15,255 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804220412] [2020-12-03 16:09:15,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:15,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:15,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1273655062] [2020-12-03 16:09:15,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:15,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:15,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-12-03 16:09:15,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:15,416 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:15,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804220412] [2020-12-03 16:09:15,416 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:15,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1273655062] [2020-12-03 16:09:15,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:15,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-03 16:09:15,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401594583] [2020-12-03 16:09:15,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 16:09:15,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:15,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 16:09:15,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-12-03 16:09:15,418 INFO L87 Difference]: Start difference. First operand 452 states and 597 transitions. Second operand 9 states. [2020-12-03 16:09:15,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:15,539 INFO L93 Difference]: Finished difference Result 766 states and 1030 transitions. [2020-12-03 16:09:15,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-03 16:09:15,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-12-03 16:09:15,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:15,542 INFO L225 Difference]: With dead ends: 766 [2020-12-03 16:09:15,542 INFO L226 Difference]: Without dead ends: 464 [2020-12-03 16:09:15,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:15,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2020-12-03 16:09:15,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 460. [2020-12-03 16:09:15,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 460 states. [2020-12-03 16:09:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 460 states to 460 states and 605 transitions. [2020-12-03 16:09:15,587 INFO L78 Accepts]: Start accepts. Automaton has 460 states and 605 transitions. Word has length 40 [2020-12-03 16:09:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:15,587 INFO L481 AbstractCegarLoop]: Abstraction has 460 states and 605 transitions. [2020-12-03 16:09:15,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 16:09:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 460 states and 605 transitions. [2020-12-03 16:09:15,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-03 16:09:15,588 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:15,588 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:15,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:15,802 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:15,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:15,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1573117064, now seen corresponding path program 1 times [2020-12-03 16:09:15,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:15,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355654432] [2020-12-03 16:09:15,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:15,810 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:15,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1676889826] [2020-12-03 16:09:15,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:15,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:15,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-03 16:09:15,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:15,917 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 16:09:15,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355654432] [2020-12-03 16:09:15,918 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:15,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676889826] [2020-12-03 16:09:15,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:15,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:09:15,918 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503677921] [2020-12-03 16:09:15,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:09:15,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:15,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:09:15,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:15,920 INFO L87 Difference]: Start difference. First operand 460 states and 605 transitions. Second operand 5 states. [2020-12-03 16:09:16,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:16,031 INFO L93 Difference]: Finished difference Result 870 states and 1172 transitions. [2020-12-03 16:09:16,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-03 16:09:16,032 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-03 16:09:16,032 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:16,034 INFO L225 Difference]: With dead ends: 870 [2020-12-03 16:09:16,034 INFO L226 Difference]: Without dead ends: 545 [2020-12-03 16:09:16,035 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-03 16:09:16,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 545 states. [2020-12-03 16:09:16,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 545 to 483. [2020-12-03 16:09:16,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 483 states. [2020-12-03 16:09:16,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 635 transitions. [2020-12-03 16:09:16,083 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 635 transitions. Word has length 41 [2020-12-03 16:09:16,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:16,083 INFO L481 AbstractCegarLoop]: Abstraction has 483 states and 635 transitions. [2020-12-03 16:09:16,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:09:16,083 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 635 transitions. [2020-12-03 16:09:16,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-12-03 16:09:16,084 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:16,084 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:16,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2020-12-03 16:09:16,299 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:16,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:16,299 INFO L82 PathProgramCache]: Analyzing trace with hash -149759960, now seen corresponding path program 2 times [2020-12-03 16:09:16,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:16,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833170731] [2020-12-03 16:09:16,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:16,308 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:16,308 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1812958265] [2020-12-03 16:09:16,308 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 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 [2020-12-03 16:09:16,365 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-03 16:09:16,365 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:16,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 16 conjunts are in the unsatisfiable core [2020-12-03 16:09:16,370 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-12-03 16:09:16,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833170731] [2020-12-03 16:09:16,430 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:16,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1812958265] [2020-12-03 16:09:16,431 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-03 16:09:16,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-03 16:09:16,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490776134] [2020-12-03 16:09:16,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-03 16:09:16,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:16,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-03 16:09:16,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-03 16:09:16,433 INFO L87 Difference]: Start difference. First operand 483 states and 635 transitions. Second operand 5 states. [2020-12-03 16:09:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:16,584 INFO L93 Difference]: Finished difference Result 560 states and 736 transitions. [2020-12-03 16:09:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-03 16:09:16,584 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-12-03 16:09:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:16,588 INFO L225 Difference]: With dead ends: 560 [2020-12-03 16:09:16,588 INFO L226 Difference]: Without dead ends: 558 [2020-12-03 16:09:16,588 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-03 16:09:16,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 558 states. [2020-12-03 16:09:16,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 558 to 539. [2020-12-03 16:09:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-12-03 16:09:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 711 transitions. [2020-12-03 16:09:16,644 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 711 transitions. Word has length 41 [2020-12-03 16:09:16,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:16,645 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 711 transitions. [2020-12-03 16:09:16,645 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-03 16:09:16,645 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 711 transitions. [2020-12-03 16:09:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-03 16:09:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:16,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:16,859 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-12-03 16:09:16,859 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:16,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:16,860 INFO L82 PathProgramCache]: Analyzing trace with hash -595443504, now seen corresponding path program 2 times [2020-12-03 16:09:16,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:16,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023421965] [2020-12-03 16:09:16,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:16,869 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:16,869 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1499502027] [2020-12-03 16:09:16,869 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 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 [2020-12-03 16:09:16,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:16,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:16,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 34 conjunts are in the unsatisfiable core [2020-12-03 16:09:16,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:17,202 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:17,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023421965] [2020-12-03 16:09:17,203 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:17,203 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1499502027] [2020-12-03 16:09:17,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:17,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-03 16:09:17,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806892072] [2020-12-03 16:09:17,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 16:09:17,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:17,205 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 16:09:17,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:17,206 INFO L87 Difference]: Start difference. First operand 539 states and 711 transitions. Second operand 12 states. [2020-12-03 16:09:18,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:18,122 INFO L93 Difference]: Finished difference Result 677 states and 897 transitions. [2020-12-03 16:09:18,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-03 16:09:18,122 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-12-03 16:09:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:18,126 INFO L225 Difference]: With dead ends: 677 [2020-12-03 16:09:18,126 INFO L226 Difference]: Without dead ends: 675 [2020-12-03 16:09:18,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=443, Unknown=0, NotChecked=0, Total=600 [2020-12-03 16:09:18,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-12-03 16:09:18,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 549. [2020-12-03 16:09:18,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 549 states. [2020-12-03 16:09:18,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 723 transitions. [2020-12-03 16:09:18,211 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 723 transitions. Word has length 42 [2020-12-03 16:09:18,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:18,211 INFO L481 AbstractCegarLoop]: Abstraction has 549 states and 723 transitions. [2020-12-03 16:09:18,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 16:09:18,212 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 723 transitions. [2020-12-03 16:09:18,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-03 16:09:18,212 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:18,212 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:18,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2020-12-03 16:09:18,427 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1321889269, now seen corresponding path program 1 times [2020-12-03 16:09:18,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:18,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754773565] [2020-12-03 16:09:18,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:18,435 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:18,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1784953350] [2020-12-03 16:09:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:18,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-03 16:09:18,502 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:19,141 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:19,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754773565] [2020-12-03 16:09:19,141 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:19,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784953350] [2020-12-03 16:09:19,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:19,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-03 16:09:19,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931195194] [2020-12-03 16:09:19,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-03 16:09:19,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:19,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-03 16:09:19,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-12-03 16:09:19,142 INFO L87 Difference]: Start difference. First operand 549 states and 723 transitions. Second operand 16 states. [2020-12-03 16:09:20,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:20,264 INFO L93 Difference]: Finished difference Result 731 states and 954 transitions. [2020-12-03 16:09:20,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-12-03 16:09:20,265 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-12-03 16:09:20,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:20,269 INFO L225 Difference]: With dead ends: 731 [2020-12-03 16:09:20,269 INFO L226 Difference]: Without dead ends: 723 [2020-12-03 16:09:20,270 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=130, Invalid=520, Unknown=0, NotChecked=0, Total=650 [2020-12-03 16:09:20,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2020-12-03 16:09:20,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 582. [2020-12-03 16:09:20,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 582 states. [2020-12-03 16:09:20,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 582 states to 582 states and 761 transitions. [2020-12-03 16:09:20,338 INFO L78 Accepts]: Start accepts. Automaton has 582 states and 761 transitions. Word has length 43 [2020-12-03 16:09:20,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:20,338 INFO L481 AbstractCegarLoop]: Abstraction has 582 states and 761 transitions. [2020-12-03 16:09:20,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-03 16:09:20,339 INFO L276 IsEmpty]: Start isEmpty. Operand 582 states and 761 transitions. [2020-12-03 16:09:20,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-03 16:09:20,339 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:20,339 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:20,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-12-03 16:09:20,554 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:20,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:20,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1565965267, now seen corresponding path program 1 times [2020-12-03 16:09:20,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:20,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121237734] [2020-12-03 16:09:20,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:20,562 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:20,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1318954396] [2020-12-03 16:09:20,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:20,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:20,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-03 16:09:20,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:21,082 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 3 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:21,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121237734] [2020-12-03 16:09:21,083 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:21,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318954396] [2020-12-03 16:09:21,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:21,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-03 16:09:21,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841215811] [2020-12-03 16:09:21,083 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-03 16:09:21,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:21,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-03 16:09:21,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-12-03 16:09:21,084 INFO L87 Difference]: Start difference. First operand 582 states and 761 transitions. Second operand 15 states. [2020-12-03 16:09:24,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:24,236 INFO L93 Difference]: Finished difference Result 1269 states and 1647 transitions. [2020-12-03 16:09:24,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-12-03 16:09:24,237 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2020-12-03 16:09:24,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:24,243 INFO L225 Difference]: With dead ends: 1269 [2020-12-03 16:09:24,243 INFO L226 Difference]: Without dead ends: 1267 [2020-12-03 16:09:24,245 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 871 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=631, Invalid=2561, Unknown=0, NotChecked=0, Total=3192 [2020-12-03 16:09:24,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2020-12-03 16:09:24,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 853. [2020-12-03 16:09:24,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-12-03 16:09:24,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1148 transitions. [2020-12-03 16:09:24,346 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1148 transitions. Word has length 44 [2020-12-03 16:09:24,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:24,347 INFO L481 AbstractCegarLoop]: Abstraction has 853 states and 1148 transitions. [2020-12-03 16:09:24,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-03 16:09:24,347 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1148 transitions. [2020-12-03 16:09:24,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-03 16:09:24,348 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:24,348 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:24,563 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,30 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:24,564 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:24,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:24,564 INFO L82 PathProgramCache]: Analyzing trace with hash -15075340, now seen corresponding path program 1 times [2020-12-03 16:09:24,565 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:24,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724156103] [2020-12-03 16:09:24,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:24,571 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:24,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [870771180] [2020-12-03 16:09:24,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:24,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:24,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-03 16:09:24,643 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:24,741 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 12 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:24,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724156103] [2020-12-03 16:09:24,742 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:24,742 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870771180] [2020-12-03 16:09:24,742 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:24,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-03 16:09:24,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398851097] [2020-12-03 16:09:24,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-03 16:09:24,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:24,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-03 16:09:24,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-12-03 16:09:24,743 INFO L87 Difference]: Start difference. First operand 853 states and 1148 transitions. Second operand 10 states. [2020-12-03 16:09:24,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:24,937 INFO L93 Difference]: Finished difference Result 1558 states and 2131 transitions. [2020-12-03 16:09:24,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-03 16:09:24,938 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2020-12-03 16:09:24,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:24,942 INFO L225 Difference]: With dead ends: 1558 [2020-12-03 16:09:24,942 INFO L226 Difference]: Without dead ends: 879 [2020-12-03 16:09:24,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2020-12-03 16:09:24,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2020-12-03 16:09:25,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 871. [2020-12-03 16:09:25,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 871 states. [2020-12-03 16:09:25,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 871 states to 871 states and 1168 transitions. [2020-12-03 16:09:25,052 INFO L78 Accepts]: Start accepts. Automaton has 871 states and 1168 transitions. Word has length 44 [2020-12-03 16:09:25,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:25,052 INFO L481 AbstractCegarLoop]: Abstraction has 871 states and 1168 transitions. [2020-12-03 16:09:25,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-03 16:09:25,053 INFO L276 IsEmpty]: Start isEmpty. Operand 871 states and 1168 transitions. [2020-12-03 16:09:25,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-03 16:09:25,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:25,053 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:25,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:25,267 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:25,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1214368663, now seen corresponding path program 2 times [2020-12-03 16:09:25,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:25,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462956882] [2020-12-03 16:09:25,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:25,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:25,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [844609014] [2020-12-03 16:09:25,277 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 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 [2020-12-03 16:09:25,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:25,343 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:25,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-03 16:09:25,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:25,461 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 8 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:25,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462956882] [2020-12-03 16:09:25,462 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:25,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844609014] [2020-12-03 16:09:25,462 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:25,462 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-03 16:09:25,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066154381] [2020-12-03 16:09:25,463 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-03 16:09:25,463 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:25,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-03 16:09:25,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-03 16:09:25,464 INFO L87 Difference]: Start difference. First operand 871 states and 1168 transitions. Second operand 11 states. [2020-12-03 16:09:25,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:25,677 INFO L93 Difference]: Finished difference Result 1503 states and 2042 transitions. [2020-12-03 16:09:25,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-03 16:09:25,678 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-12-03 16:09:25,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:25,681 INFO L225 Difference]: With dead ends: 1503 [2020-12-03 16:09:25,681 INFO L226 Difference]: Without dead ends: 953 [2020-12-03 16:09:25,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=152, Unknown=0, NotChecked=0, Total=240 [2020-12-03 16:09:25,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953 states. [2020-12-03 16:09:25,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953 to 921. [2020-12-03 16:09:25,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 921 states. [2020-12-03 16:09:25,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1225 transitions. [2020-12-03 16:09:25,799 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1225 transitions. Word has length 45 [2020-12-03 16:09:25,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:25,799 INFO L481 AbstractCegarLoop]: Abstraction has 921 states and 1225 transitions. [2020-12-03 16:09:25,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-03 16:09:25,800 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1225 transitions. [2020-12-03 16:09:25,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-03 16:09:25,803 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:25,803 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:26,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,32 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:26,018 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:26,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:26,018 INFO L82 PathProgramCache]: Analyzing trace with hash -1653911024, now seen corresponding path program 1 times [2020-12-03 16:09:26,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:26,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108590914] [2020-12-03 16:09:26,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:26,026 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:26,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1127769624] [2020-12-03 16:09:26,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2020-12-03 16:09:26,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 86 conjunts are in the unsatisfiable core [2020-12-03 16:09:26,097 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:26,925 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:26,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108590914] [2020-12-03 16:09:26,925 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:26,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1127769624] [2020-12-03 16:09:26,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:26,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-12-03 16:09:26,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863974300] [2020-12-03 16:09:26,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-03 16:09:26,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:26,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-03 16:09:26,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2020-12-03 16:09:26,927 INFO L87 Difference]: Start difference. First operand 921 states and 1225 transitions. Second operand 20 states. [2020-12-03 16:09:28,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:28,545 INFO L93 Difference]: Finished difference Result 1104 states and 1461 transitions. [2020-12-03 16:09:28,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-03 16:09:28,546 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 46 [2020-12-03 16:09:28,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:28,551 INFO L225 Difference]: With dead ends: 1104 [2020-12-03 16:09:28,551 INFO L226 Difference]: Without dead ends: 1102 [2020-12-03 16:09:28,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2020-12-03 16:09:28,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-12-03 16:09:28,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 970. [2020-12-03 16:09:28,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-12-03 16:09:28,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1290 transitions. [2020-12-03 16:09:28,682 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1290 transitions. Word has length 46 [2020-12-03 16:09:28,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:28,682 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1290 transitions. [2020-12-03 16:09:28,682 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-03 16:09:28,682 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1290 transitions. [2020-12-03 16:09:28,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-03 16:09:28,683 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:28,684 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:28,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-12-03 16:09:28,900 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:28,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:28,900 INFO L82 PathProgramCache]: Analyzing trace with hash -927382991, now seen corresponding path program 1 times [2020-12-03 16:09:28,901 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:28,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506215290] [2020-12-03 16:09:28,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:28,909 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:28,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [717931483] [2020-12-03 16:09:28,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:28,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:09:28,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-03 16:09:28,985 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:29,110 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:29,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506215290] [2020-12-03 16:09:29,111 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:29,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [717931483] [2020-12-03 16:09:29,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:29,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-03 16:09:29,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619189135] [2020-12-03 16:09:29,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-03 16:09:29,112 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:29,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-03 16:09:29,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-12-03 16:09:29,112 INFO L87 Difference]: Start difference. First operand 970 states and 1290 transitions. Second operand 11 states. [2020-12-03 16:09:29,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:29,300 INFO L93 Difference]: Finished difference Result 1008 states and 1327 transitions. [2020-12-03 16:09:29,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-03 16:09:29,300 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 49 [2020-12-03 16:09:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:29,304 INFO L225 Difference]: With dead ends: 1008 [2020-12-03 16:09:29,304 INFO L226 Difference]: Without dead ends: 1004 [2020-12-03 16:09:29,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=150, Unknown=0, NotChecked=0, Total=240 [2020-12-03 16:09:29,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2020-12-03 16:09:29,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 988. [2020-12-03 16:09:29,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 988 states. [2020-12-03 16:09:29,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 988 states to 988 states and 1310 transitions. [2020-12-03 16:09:29,439 INFO L78 Accepts]: Start accepts. Automaton has 988 states and 1310 transitions. Word has length 49 [2020-12-03 16:09:29,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:29,439 INFO L481 AbstractCegarLoop]: Abstraction has 988 states and 1310 transitions. [2020-12-03 16:09:29,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-03 16:09:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 988 states and 1310 transitions. [2020-12-03 16:09:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-03 16:09:29,440 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:29,440 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, 1, 1, 1, 1] [2020-12-03 16:09:29,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,34 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:29,654 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:29,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:29,654 INFO L82 PathProgramCache]: Analyzing trace with hash -41471547, now seen corresponding path program 2 times [2020-12-03 16:09:29,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:29,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263277171] [2020-12-03 16:09:29,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:29,663 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:29,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1171574008] [2020-12-03 16:09:29,664 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 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:29,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:29,730 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:29,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 35 conjunts are in the unsatisfiable core [2020-12-03 16:09:29,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:29,980 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:29,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263277171] [2020-12-03 16:09:29,981 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:29,981 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1171574008] [2020-12-03 16:09:29,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:29,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-03 16:09:29,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977546567] [2020-12-03 16:09:29,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-03 16:09:29,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:29,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-03 16:09:29,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2020-12-03 16:09:29,983 INFO L87 Difference]: Start difference. First operand 988 states and 1310 transitions. Second operand 13 states. [2020-12-03 16:09:31,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:31,847 INFO L93 Difference]: Finished difference Result 1824 states and 2429 transitions. [2020-12-03 16:09:31,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-12-03 16:09:31,848 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 49 [2020-12-03 16:09:31,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:31,855 INFO L225 Difference]: With dead ends: 1824 [2020-12-03 16:09:31,855 INFO L226 Difference]: Without dead ends: 1822 [2020-12-03 16:09:31,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 473 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=374, Invalid=1518, Unknown=0, NotChecked=0, Total=1892 [2020-12-03 16:09:31,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1822 states. [2020-12-03 16:09:31,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1822 to 1038. [2020-12-03 16:09:31,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-12-03 16:09:31,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1380 transitions. [2020-12-03 16:09:31,975 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1380 transitions. Word has length 49 [2020-12-03 16:09:31,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:31,975 INFO L481 AbstractCegarLoop]: Abstraction has 1038 states and 1380 transitions. [2020-12-03 16:09:31,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-03 16:09:31,975 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1380 transitions. [2020-12-03 16:09:31,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-12-03 16:09:31,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:31,976 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:32,189 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-12-03 16:09:32,190 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:32,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:32,190 INFO L82 PathProgramCache]: Analyzing trace with hash 1315150752, now seen corresponding path program 2 times [2020-12-03 16:09:32,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:32,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535100627] [2020-12-03 16:09:32,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:32,198 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:32,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [458699756] [2020-12-03 16:09:32,198 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 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:32,278 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:32,278 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:32,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 100 conjunts are in the unsatisfiable core [2020-12-03 16:09:32,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:33,361 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:33,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535100627] [2020-12-03 16:09:33,362 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:33,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [458699756] [2020-12-03 16:09:33,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:33,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-12-03 16:09:33,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949705273] [2020-12-03 16:09:33,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-12-03 16:09:33,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:33,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-12-03 16:09:33,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2020-12-03 16:09:33,365 INFO L87 Difference]: Start difference. First operand 1038 states and 1380 transitions. Second operand 21 states. [2020-12-03 16:09:35,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:35,345 INFO L93 Difference]: Finished difference Result 1401 states and 1863 transitions. [2020-12-03 16:09:35,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-12-03 16:09:35,346 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 50 [2020-12-03 16:09:35,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:35,352 INFO L225 Difference]: With dead ends: 1401 [2020-12-03 16:09:35,352 INFO L226 Difference]: Without dead ends: 1391 [2020-12-03 16:09:35,353 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=209, Invalid=1197, Unknown=0, NotChecked=0, Total=1406 [2020-12-03 16:09:35,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-12-03 16:09:35,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1070. [2020-12-03 16:09:35,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1070 states. [2020-12-03 16:09:35,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1070 states to 1070 states and 1418 transitions. [2020-12-03 16:09:35,467 INFO L78 Accepts]: Start accepts. Automaton has 1070 states and 1418 transitions. Word has length 50 [2020-12-03 16:09:35,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:35,467 INFO L481 AbstractCegarLoop]: Abstraction has 1070 states and 1418 transitions. [2020-12-03 16:09:35,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-12-03 16:09:35,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1070 states and 1418 transitions. [2020-12-03 16:09:35,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-03 16:09:35,468 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:35,468 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:35,682 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,36 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:35,683 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:35,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:35,683 INFO L82 PathProgramCache]: Analyzing trace with hash -223969367, now seen corresponding path program 2 times [2020-12-03 16:09:35,684 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:35,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1323927366] [2020-12-03 16:09:35,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:35,691 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:35,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [507610840] [2020-12-03 16:09:35,692 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 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:35,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:09:35,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:35,774 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 16:09:35,776 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 17 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:09:35,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1323927366] [2020-12-03 16:09:35,904 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:35,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507610840] [2020-12-03 16:09:35,904 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:35,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-03 16:09:35,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266998678] [2020-12-03 16:09:35,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 16:09:35,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 16:09:35,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:09:35,906 INFO L87 Difference]: Start difference. First operand 1070 states and 1418 transitions. Second operand 12 states. [2020-12-03 16:09:36,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:09:36,144 INFO L93 Difference]: Finished difference Result 1935 states and 2605 transitions. [2020-12-03 16:09:36,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-03 16:09:36,145 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-12-03 16:09:36,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:09:36,149 INFO L225 Difference]: With dead ends: 1935 [2020-12-03 16:09:36,149 INFO L226 Difference]: Without dead ends: 1178 [2020-12-03 16:09:36,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=111, Invalid=195, Unknown=0, NotChecked=0, Total=306 [2020-12-03 16:09:36,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1178 states. [2020-12-03 16:09:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1178 to 1138. [2020-12-03 16:09:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1138 states. [2020-12-03 16:09:36,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1138 states to 1138 states and 1492 transitions. [2020-12-03 16:09:36,296 INFO L78 Accepts]: Start accepts. Automaton has 1138 states and 1492 transitions. Word has length 51 [2020-12-03 16:09:36,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:09:36,297 INFO L481 AbstractCegarLoop]: Abstraction has 1138 states and 1492 transitions. [2020-12-03 16:09:36,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 16:09:36,297 INFO L276 IsEmpty]: Start isEmpty. Operand 1138 states and 1492 transitions. [2020-12-03 16:09:36,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-12-03 16:09:36,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:09:36,298 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:09:36,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-03 16:09:36,512 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:09:36,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:09:36,512 INFO L82 PathProgramCache]: Analyzing trace with hash 780160965, now seen corresponding path program 3 times [2020-12-03 16:09:36,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:09:36,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259362530] [2020-12-03 16:09:36,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:09:36,519 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:09:36,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1730666516] [2020-12-03 16:09:36,520 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 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:09:36,575 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-03 16:09:36,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:09:36,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 28 conjunts are in the unsatisfiable core [2020-12-03 16:09:36,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:09:40,842 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 21 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-03 16:09:40,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259362530] [2020-12-03 16:09:40,842 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:09:40,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730666516] [2020-12-03 16:09:40,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:09:40,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-03 16:09:40,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026700467] [2020-12-03 16:09:40,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-03 16:09:40,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:09:40,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-03 16:09:40,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=51, Unknown=1, NotChecked=0, Total=72 [2020-12-03 16:09:40,844 INFO L87 Difference]: Start difference. First operand 1138 states and 1492 transitions. Second operand 9 states. [2020-12-03 16:11:08,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:08,532 INFO L93 Difference]: Finished difference Result 1197 states and 1571 transitions. [2020-12-03 16:11:08,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-03 16:11:08,533 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-12-03 16:11:08,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:08,537 INFO L225 Difference]: With dead ends: 1197 [2020-12-03 16:11:08,537 INFO L226 Difference]: Without dead ends: 1195 [2020-12-03 16:11:08,538 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 21.8s TimeCoverageRelationStatistics Valid=40, Invalid=87, Unknown=5, NotChecked=0, Total=132 [2020-12-03 16:11:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-12-03 16:11:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1098. [2020-12-03 16:11:08,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1098 states. [2020-12-03 16:11:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1098 states to 1098 states and 1441 transitions. [2020-12-03 16:11:08,653 INFO L78 Accepts]: Start accepts. Automaton has 1098 states and 1441 transitions. Word has length 52 [2020-12-03 16:11:08,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:08,653 INFO L481 AbstractCegarLoop]: Abstraction has 1098 states and 1441 transitions. [2020-12-03 16:11:08,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-03 16:11:08,653 INFO L276 IsEmpty]: Start isEmpty. Operand 1098 states and 1441 transitions. [2020-12-03 16:11:08,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-03 16:11:08,655 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:08,655 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:08,855 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-12-03 16:11:08,856 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:08,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash 1601103788, now seen corresponding path program 2 times [2020-12-03 16:11:08,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:08,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944891816] [2020-12-03 16:11:08,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:08,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:08,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1298765805] [2020-12-03 16:11:08,864 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 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:08,931 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:11:08,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:11:08,933 INFO L263 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 16:11:08,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:09,092 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:11:09,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944891816] [2020-12-03 16:11:09,093 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:09,093 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1298765805] [2020-12-03 16:11:09,093 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:09,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-03 16:11:09,094 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907708132] [2020-12-03 16:11:09,094 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 16:11:09,094 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:09,095 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 16:11:09,095 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:11:09,095 INFO L87 Difference]: Start difference. First operand 1098 states and 1441 transitions. Second operand 12 states. [2020-12-03 16:11:09,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:09,439 INFO L93 Difference]: Finished difference Result 1141 states and 1482 transitions. [2020-12-03 16:11:09,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-03 16:11:09,440 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-12-03 16:11:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:09,445 INFO L225 Difference]: With dead ends: 1141 [2020-12-03 16:11:09,445 INFO L226 Difference]: Without dead ends: 1137 [2020-12-03 16:11:09,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=114, Invalid=192, Unknown=0, NotChecked=0, Total=306 [2020-12-03 16:11:09,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1137 states. [2020-12-03 16:11:09,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1137 to 1102. [2020-12-03 16:11:09,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-12-03 16:11:09,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1445 transitions. [2020-12-03 16:11:09,620 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1445 transitions. Word has length 53 [2020-12-03 16:11:09,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:09,620 INFO L481 AbstractCegarLoop]: Abstraction has 1102 states and 1445 transitions. [2020-12-03 16:11:09,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 16:11:09,621 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1445 transitions. [2020-12-03 16:11:09,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-03 16:11:09,622 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:09,622 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:09,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-03 16:11:09,837 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:09,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:09,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1807952064, now seen corresponding path program 1 times [2020-12-03 16:11:09,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:09,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416748857] [2020-12-03 16:11:09,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:09,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:09,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1072171882] [2020-12-03 16:11:09,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 40 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:11:09,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-03 16:11:09,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:10,155 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 9 proven. 31 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:11:10,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416748857] [2020-12-03 16:11:10,155 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:10,155 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072171882] [2020-12-03 16:11:10,156 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:10,156 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-03 16:11:10,156 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76850313] [2020-12-03 16:11:10,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-03 16:11:10,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:10,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-03 16:11:10,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-12-03 16:11:10,157 INFO L87 Difference]: Start difference. First operand 1102 states and 1445 transitions. Second operand 11 states. [2020-12-03 16:11:11,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:11,460 INFO L93 Difference]: Finished difference Result 1819 states and 2419 transitions. [2020-12-03 16:11:11,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-12-03 16:11:11,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-12-03 16:11:11,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:11,467 INFO L225 Difference]: With dead ends: 1819 [2020-12-03 16:11:11,467 INFO L226 Difference]: Without dead ends: 1817 [2020-12-03 16:11:11,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 301 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=322, Invalid=938, Unknown=0, NotChecked=0, Total=1260 [2020-12-03 16:11:11,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1817 states. [2020-12-03 16:11:11,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1817 to 1371. [2020-12-03 16:11:11,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1371 states. [2020-12-03 16:11:11,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 1820 transitions. [2020-12-03 16:11:11,623 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 1820 transitions. Word has length 53 [2020-12-03 16:11:11,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:11,624 INFO L481 AbstractCegarLoop]: Abstraction has 1371 states and 1820 transitions. [2020-12-03 16:11:11,624 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-03 16:11:11,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 1820 transitions. [2020-12-03 16:11:11,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-12-03 16:11:11,624 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:11,625 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:11,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-12-03 16:11:11,826 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:11,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:11,826 INFO L82 PathProgramCache]: Analyzing trace with hash 1015954848, now seen corresponding path program 3 times [2020-12-03 16:11:11,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:11,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261306466] [2020-12-03 16:11:11,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:11,832 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:11,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1813438895] [2020-12-03 16:11:11,832 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 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 41 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:11,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-03 16:11:11,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:11:11,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 61 conjunts are in the unsatisfiable core [2020-12-03 16:11:11,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:12,360 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-12-03 16:11:12,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261306466] [2020-12-03 16:11:12,360 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:12,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1813438895] [2020-12-03 16:11:12,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:12,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-03 16:11:12,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788216422] [2020-12-03 16:11:12,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 16:11:12,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:12,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 16:11:12,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:11:12,362 INFO L87 Difference]: Start difference. First operand 1371 states and 1820 transitions. Second operand 12 states. [2020-12-03 16:11:17,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:17,565 INFO L93 Difference]: Finished difference Result 1683 states and 2228 transitions. [2020-12-03 16:11:17,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-03 16:11:17,566 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-12-03 16:11:17,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:17,573 INFO L225 Difference]: With dead ends: 1683 [2020-12-03 16:11:17,574 INFO L226 Difference]: Without dead ends: 1675 [2020-12-03 16:11:17,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-12-03 16:11:17,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1675 states. [2020-12-03 16:11:17,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1675 to 1454. [2020-12-03 16:11:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1454 states. [2020-12-03 16:11:17,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1454 states to 1454 states and 1919 transitions. [2020-12-03 16:11:17,732 INFO L78 Accepts]: Start accepts. Automaton has 1454 states and 1919 transitions. Word has length 53 [2020-12-03 16:11:17,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:17,732 INFO L481 AbstractCegarLoop]: Abstraction has 1454 states and 1919 transitions. [2020-12-03 16:11:17,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 16:11:17,733 INFO L276 IsEmpty]: Start isEmpty. Operand 1454 states and 1919 transitions. [2020-12-03 16:11:17,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-03 16:11:17,733 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:17,733 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:17,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,41 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:17,934 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:17,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:17,935 INFO L82 PathProgramCache]: Analyzing trace with hash -474089570, now seen corresponding path program 1 times [2020-12-03 16:11:17,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:17,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406319237] [2020-12-03 16:11:17,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:17,942 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:17,942 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [50376950] [2020-12-03 16:11:17,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 42 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:18,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-03 16:11:18,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-03 16:11:18,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:18,172 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 8 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:11:18,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406319237] [2020-12-03 16:11:18,172 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:18,173 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50376950] [2020-12-03 16:11:18,173 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:18,173 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-03 16:11:18,173 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447589402] [2020-12-03 16:11:18,174 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-03 16:11:18,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:18,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-03 16:11:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-12-03 16:11:18,175 INFO L87 Difference]: Start difference. First operand 1454 states and 1919 transitions. Second operand 12 states. [2020-12-03 16:11:18,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:18,528 INFO L93 Difference]: Finished difference Result 2389 states and 3229 transitions. [2020-12-03 16:11:18,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-12-03 16:11:18,529 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2020-12-03 16:11:18,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:18,534 INFO L225 Difference]: With dead ends: 2389 [2020-12-03 16:11:18,535 INFO L226 Difference]: Without dead ends: 1497 [2020-12-03 16:11:18,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=112, Invalid=194, Unknown=0, NotChecked=0, Total=306 [2020-12-03 16:11:18,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1497 states. [2020-12-03 16:11:18,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1497 to 1491. [2020-12-03 16:11:18,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1491 states. [2020-12-03 16:11:18,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1491 states to 1491 states and 1956 transitions. [2020-12-03 16:11:18,714 INFO L78 Accepts]: Start accepts. Automaton has 1491 states and 1956 transitions. Word has length 55 [2020-12-03 16:11:18,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:18,714 INFO L481 AbstractCegarLoop]: Abstraction has 1491 states and 1956 transitions. [2020-12-03 16:11:18,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-03 16:11:18,714 INFO L276 IsEmpty]: Start isEmpty. Operand 1491 states and 1956 transitions. [2020-12-03 16:11:18,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-03 16:11:18,715 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:18,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:18,915 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2020-12-03 16:11:18,916 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:18,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:18,918 INFO L82 PathProgramCache]: Analyzing trace with hash 766336805, now seen corresponding path program 4 times [2020-12-03 16:11:18,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:18,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256049771] [2020-12-03 16:11:18,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:18,930 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:18,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1154748198] [2020-12-03 16:11:18,930 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 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 43 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:18,999 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-03 16:11:18,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:11:19,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 80 conjunts are in the unsatisfiable core [2020-12-03 16:11:19,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:11:20,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256049771] [2020-12-03 16:11:20,384 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:20,385 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154748198] [2020-12-03 16:11:20,385 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:20,385 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-12-03 16:11:20,385 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884771174] [2020-12-03 16:11:20,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-12-03 16:11:20,386 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:20,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-12-03 16:11:20,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-12-03 16:11:20,386 INFO L87 Difference]: Start difference. First operand 1491 states and 1956 transitions. Second operand 20 states. [2020-12-03 16:11:21,697 WARN L197 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-12-03 16:11:21,867 WARN L197 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-12-03 16:11:22,044 WARN L197 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-12-03 16:11:22,482 WARN L197 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 35 [2020-12-03 16:11:22,888 WARN L197 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-12-03 16:11:23,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:23,772 INFO L93 Difference]: Finished difference Result 2002 states and 2651 transitions. [2020-12-03 16:11:23,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-12-03 16:11:23,773 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-12-03 16:11:23,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:23,780 INFO L225 Difference]: With dead ends: 2002 [2020-12-03 16:11:23,781 INFO L226 Difference]: Without dead ends: 1642 [2020-12-03 16:11:23,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 307 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=290, Invalid=1192, Unknown=0, NotChecked=0, Total=1482 [2020-12-03 16:11:23,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1642 states. [2020-12-03 16:11:23,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1642 to 1469. [2020-12-03 16:11:23,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1469 states. [2020-12-03 16:11:23,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1469 states to 1469 states and 1930 transitions. [2020-12-03 16:11:23,930 INFO L78 Accepts]: Start accepts. Automaton has 1469 states and 1930 transitions. Word has length 57 [2020-12-03 16:11:23,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:23,930 INFO L481 AbstractCegarLoop]: Abstraction has 1469 states and 1930 transitions. [2020-12-03 16:11:23,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-12-03 16:11:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 1469 states and 1930 transitions. [2020-12-03 16:11:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-12-03 16:11:23,932 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:23,932 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:24,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,43 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:24,136 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:24,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:24,136 INFO L82 PathProgramCache]: Analyzing trace with hash 1753699773, now seen corresponding path program 2 times [2020-12-03 16:11:24,137 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:24,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702373823] [2020-12-03 16:11:24,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:24,144 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:24,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1846579347] [2020-12-03 16:11:24,145 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 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 44 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:24,222 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-03 16:11:24,222 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:11:24,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-03 16:11:24,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:24,452 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 55 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:11:24,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702373823] [2020-12-03 16:11:24,453 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:24,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1846579347] [2020-12-03 16:11:24,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:24,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-12-03 16:11:24,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737967655] [2020-12-03 16:11:24,454 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-03 16:11:24,454 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:24,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-03 16:11:24,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-12-03 16:11:24,455 INFO L87 Difference]: Start difference. First operand 1469 states and 1930 transitions. Second operand 14 states. [2020-12-03 16:11:24,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:24,797 INFO L93 Difference]: Finished difference Result 2130 states and 2813 transitions. [2020-12-03 16:11:24,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-12-03 16:11:24,799 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-12-03 16:11:24,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:24,802 INFO L225 Difference]: With dead ends: 2130 [2020-12-03 16:11:24,803 INFO L226 Difference]: Without dead ends: 1031 [2020-12-03 16:11:24,804 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=116, Unknown=0, NotChecked=0, Total=210 [2020-12-03 16:11:24,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1031 states. [2020-12-03 16:11:24,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1031 to 597. [2020-12-03 16:11:24,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-12-03 16:11:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 691 transitions. [2020-12-03 16:11:24,928 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 691 transitions. Word has length 58 [2020-12-03 16:11:24,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:24,928 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 691 transitions. [2020-12-03 16:11:24,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-03 16:11:24,929 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 691 transitions. [2020-12-03 16:11:24,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-03 16:11:24,930 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:24,930 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:25,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,44 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:25,144 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:25,144 INFO L82 PathProgramCache]: Analyzing trace with hash -2113709863, now seen corresponding path program 3 times [2020-12-03 16:11:25,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:25,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691476186] [2020-12-03 16:11:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:25,151 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:25,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032314429] [2020-12-03 16:11:25,151 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 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 45 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:25,646 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-03 16:11:25,646 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:11:25,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-03 16:11:25,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:25,837 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 8 proven. 47 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-03 16:11:25,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691476186] [2020-12-03 16:11:25,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:25,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032314429] [2020-12-03 16:11:25,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:25,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-03 16:11:25,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146378957] [2020-12-03 16:11:25,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-03 16:11:25,839 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:25,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-03 16:11:25,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-12-03 16:11:25,840 INFO L87 Difference]: Start difference. First operand 597 states and 691 transitions. Second operand 13 states. [2020-12-03 16:11:26,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:11:26,205 INFO L93 Difference]: Finished difference Result 734 states and 865 transitions. [2020-12-03 16:11:26,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-12-03 16:11:26,207 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 59 [2020-12-03 16:11:26,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:11:26,209 INFO L225 Difference]: With dead ends: 734 [2020-12-03 16:11:26,209 INFO L226 Difference]: Without dead ends: 646 [2020-12-03 16:11:26,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=241, Unknown=0, NotChecked=0, Total=380 [2020-12-03 16:11:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 646 states. [2020-12-03 16:11:26,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 646 to 604. [2020-12-03 16:11:26,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 604 states. [2020-12-03 16:11:26,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 699 transitions. [2020-12-03 16:11:26,304 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 699 transitions. Word has length 59 [2020-12-03 16:11:26,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:11:26,304 INFO L481 AbstractCegarLoop]: Abstraction has 604 states and 699 transitions. [2020-12-03 16:11:26,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-03 16:11:26,305 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 699 transitions. [2020-12-03 16:11:26,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-03 16:11:26,306 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:11:26,306 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:11:26,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2020-12-03 16:11:26,510 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:11:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:11:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1057467782, now seen corresponding path program 3 times [2020-12-03 16:11:26,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:11:26,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272681927] [2020-12-03 16:11:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:11:26,517 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:11:26,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2099060787] [2020-12-03 16:11:26,517 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 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 46 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:11:26,588 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-03 16:11:26,588 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-03 16:11:26,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 32 conjunts are in the unsatisfiable core [2020-12-03 16:11:26,591 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-03 16:11:29,112 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 10 proven. 27 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-12-03 16:11:29,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272681927] [2020-12-03 16:11:29,113 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-03 16:11:29,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2099060787] [2020-12-03 16:11:29,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-03 16:11:29,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-03 16:11:29,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623784682] [2020-12-03 16:11:29,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-03 16:11:29,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-03 16:11:29,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-03 16:11:29,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=85, Unknown=1, NotChecked=0, Total=110 [2020-12-03 16:11:29,115 INFO L87 Difference]: Start difference. First operand 604 states and 699 transitions. Second operand 11 states. [2020-12-03 16:12:52,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-03 16:12:52,577 INFO L93 Difference]: Finished difference Result 873 states and 1026 transitions. [2020-12-03 16:12:52,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-03 16:12:52,580 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-12-03 16:12:52,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-03 16:12:52,582 INFO L225 Difference]: With dead ends: 873 [2020-12-03 16:12:52,583 INFO L226 Difference]: Without dead ends: 871 [2020-12-03 16:12:52,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 49 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 20.1s TimeCoverageRelationStatistics Valid=76, Invalid=298, Unknown=6, NotChecked=0, Total=380 [2020-12-03 16:12:52,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 871 states. [2020-12-03 16:12:52,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 871 to 585. [2020-12-03 16:12:52,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 585 states. [2020-12-03 16:12:52,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 585 states to 585 states and 675 transitions. [2020-12-03 16:12:52,671 INFO L78 Accepts]: Start accepts. Automaton has 585 states and 675 transitions. Word has length 59 [2020-12-03 16:12:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-03 16:12:52,671 INFO L481 AbstractCegarLoop]: Abstraction has 585 states and 675 transitions. [2020-12-03 16:12:52,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-03 16:12:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 585 states and 675 transitions. [2020-12-03 16:12:52,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-12-03 16:12:52,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-03 16:12:52,673 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-03 16:12:52,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 46 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2020-12-03 16:12:52,887 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-03 16:12:52,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-03 16:12:52,887 INFO L82 PathProgramCache]: Analyzing trace with hash 469187479, now seen corresponding path program 3 times [2020-12-03 16:12:52,888 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-03 16:12:52,888 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51330895] [2020-12-03 16:12:52,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-03 16:12:52,894 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-03 16:12:52,895 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [558698025] [2020-12-03 16:12:52,895 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 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 47 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-03 16:12:52,997 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-12-03 16:12:52,998 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-12-03 16:12:52,998 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 16:12:53,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-03 16:12:53,044 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-03 16:12:53,194 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-03 16:12:53,195 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-03 16:12:53,408 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2020-12-03 16:12:53,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.12 04:12:53 BoogieIcfgContainer [2020-12-03 16:12:53,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-03 16:12:53,496 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-03 16:12:53,496 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-03 16:12:53,496 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-03 16:12:53,497 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.12 04:08:59" (3/4) ... [2020-12-03 16:12:53,499 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-03 16:12:53,594 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-12-03 16:12:53,594 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-03 16:12:53,595 INFO L168 Benchmark]: Toolchain (without parser) took 234435.20 ms. Allocated memory was 48.2 MB in the beginning and 272.6 MB in the end (delta: 224.4 MB). Free memory was 25.2 MB in the beginning and 233.6 MB in the end (delta: -208.4 MB). Peak memory consumption was 18.4 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,596 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-03 16:12:53,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 26.0 MB in the end (delta: -982.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,597 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 48.2 MB. Free memory was 26.0 MB in the beginning and 24.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,597 INFO L168 Benchmark]: Boogie Preprocessor took 28.38 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,598 INFO L168 Benchmark]: RCFGBuilder took 385.06 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 29.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,599 INFO L168 Benchmark]: TraceAbstraction took 233572.44 ms. Allocated memory was 60.8 MB in the beginning and 272.6 MB in the end (delta: 211.8 MB). Free memory was 28.9 MB in the beginning and 239.9 MB in the end (delta: -211.0 MB). Peak memory consumption was 154.5 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,600 INFO L168 Benchmark]: Witness Printer took 98.77 ms. Allocated memory is still 272.6 MB. Free memory was 239.9 MB in the beginning and 233.6 MB in the end (delta: 6.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-03 16:12:53,603 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 48.2 MB. Free memory was 30.1 MB in the beginning and 30.0 MB in the end (delta: 34.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 299.39 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 26.0 MB in the end (delta: -982.7 kB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.94 ms. Allocated memory is still 48.2 MB. Free memory was 26.0 MB in the beginning and 24.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.38 ms. Allocated memory is still 48.2 MB. Free memory was 24.3 MB in the beginning and 23.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 385.06 ms. Allocated memory was 48.2 MB in the beginning and 60.8 MB in the end (delta: 12.6 MB). Free memory was 22.9 MB in the beginning and 29.3 MB in the end (delta: -6.4 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 233572.44 ms. Allocated memory was 60.8 MB in the beginning and 272.6 MB in the end (delta: 211.8 MB). Free memory was 28.9 MB in the beginning and 239.9 MB in the end (delta: -211.0 MB). Peak memory consumption was 154.5 MB. Max. memory is 16.1 GB. * Witness Printer took 98.77 ms. Allocated memory is still 272.6 MB. Free memory was 239.9 MB in the beginning and 233.6 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: 13]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L18] int counter = 0; VAL [counter=0] [L20] int x, y; [L21] long long a, b, p, q, r, s; [L22] x = __VERIFIER_nondet_int() [L23] y = __VERIFIER_nondet_int() [L8] COND FALSE !(!cond) VAL [counter=0] [L8] COND FALSE !(!cond) VAL [counter=0] [L27] a = x [L28] b = y [L29] p = 1 [L30] q = 0 [L31] r = 0 [L32] s = 1 VAL [counter=0] [L34] EXPR counter++ VAL [counter=1] [L34] COND TRUE counter++<10 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=1] [L41] EXPR counter++ VAL [counter=2] [L41] COND TRUE counter++<10 [L42] COND TRUE !(c >= b) VAL [counter=2] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=2] [L34] EXPR counter++ VAL [counter=3] [L34] COND TRUE counter++<10 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=3] [L41] EXPR counter++ VAL [counter=4] [L41] COND TRUE counter++<10 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [counter=4] [L48] EXPR counter++ VAL [counter=5] [L48] COND TRUE counter++<10 [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L11] COND FALSE !(!(cond)) VAL [counter=5] [L54] COND TRUE !(c >= 2 * v) VAL [counter=5] [L59] c = c - v [L60] k = k + d VAL [counter=5] [L41] EXPR counter++ VAL [counter=6] [L41] COND TRUE counter++<10 [L42] COND TRUE !(c >= b) VAL [counter=6] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=6] [L34] EXPR counter++ VAL [counter=7] [L34] COND TRUE counter++<10 [L35] COND FALSE !(!(b != 0)) [L37] long long c, k; [L38] c = a [L39] k = 0 VAL [counter=7] [L41] EXPR counter++ VAL [counter=8] [L41] COND TRUE counter++<10 [L42] COND FALSE !(!(c >= b)) [L44] long long d, v; [L45] d = 1 [L46] v = b VAL [counter=8] [L48] EXPR counter++ VAL [counter=9] [L48] COND TRUE counter++<10 [L11] COND FALSE !(!(cond)) VAL [counter=9] [L11] COND FALSE !(!(cond)) VAL [counter=9] [L11] COND FALSE !(!(cond)) VAL [counter=9] [L11] COND FALSE !(!(cond)) VAL [counter=9] [L54] COND TRUE !(c >= 2 * v) VAL [counter=9] [L59] c = c - v [L60] k = k + d VAL [counter=9] [L41] EXPR counter++ VAL [counter=10] [L41] COND TRUE counter++<10 [L42] COND TRUE !(c >= b) VAL [counter=10] [L63] a = b [L64] b = c [L65] long long temp; [L66] temp = p [L67] p = q [L68] q = temp - q * k [L69] temp = r [L70] r = s [L71] s = temp - s * k VAL [counter=10] [L34] EXPR counter++ VAL [counter=11] [L34] COND FALSE !(counter++<10) [L11] COND TRUE !(cond) VAL [counter=11] [L13] reach_error() VAL [counter=11] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 40 locations, 5 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 233.3s, OverallIterations: 47, TraceHistogramMax: 5, AutomataDifference: 199.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2291 SDtfs, 7629 SDslu, 10366 SDs, 0 SdLazy, 7779 SolverSat, 1245 SolverUnsat, 66 SolverUnknown, 0 SolverNotchecked, 145.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2002 GetRequests, 1285 SyntacticMatches, 6 SemanticMatches, 711 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3695 ImplicationChecksByTransitivity, 59.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1491occurred in iteration=42, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.9s AutomataMinimizationTime, 46 MinimizatonAttempts, 5373 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 16.2s InterpolantComputationTime, 1735 NumberOfCodeBlocks, 1652 NumberOfCodeBlocksAsserted, 67 NumberOfCheckSat, 1629 ConstructedInterpolants, 0 QuantifiedInterpolants, 620227 SizeOfPredicates, 447 NumberOfNonLiveVariables, 7157 ConjunctsInSsa, 1162 ConjunctsInUnsatCore, 46 InterpolantComputations, 12 PerfectInterpolantSequences, 309/955 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...