/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 04:58:43,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 04:58:43,523 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 04:58:43,563 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-22 04:58:43,564 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-22 04:58:43,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-22 04:58:43,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-22 04:58:43,569 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-22 04:58:43,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-22 04:58:43,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-22 04:58:43,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-22 04:58:43,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-22 04:58:43,576 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 04:58:43,577 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 04:58:43,578 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 04:58:43,580 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 04:58:43,581 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 04:58:43,582 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 04:58:43,591 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 04:58:43,593 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 04:58:43,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 04:58:43,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 04:58:43,598 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 04:58:43,599 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 04:58:43,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 04:58:43,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-22 04:58:43,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-22 04:58:43,608 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-22 04:58:43,609 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-22 04:58:43,610 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-22 04:58:43,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-22 04:58:43,611 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-22 04:58:43,612 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-22 04:58:43,612 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-22 04:58:43,613 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-22 04:58:43,614 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-22 04:58:43,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 04:58:43,642 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 04:58:43,642 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 04:58:43,644 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 04:58:43,644 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 04:58:43,644 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 04:58:43,644 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 04:58:43,644 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 04:58:43,645 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 04:58:43,645 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 04:58:43,645 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 04:58:43,645 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 04:58:43,646 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 04:58:43,646 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 04:58:43,646 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 04:58:43,646 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 04:58:43,646 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 04:58:43,647 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 04:58:43,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 04:58:43,647 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 04:58:43,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 04:58:43,648 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 04:58:43,648 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 04:58:43,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 04:58:43,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 04:58:43,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 04:58:43,649 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 04:58:44,048 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 04:58:44,076 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 04:58:44,079 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 04:58:44,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 04:58:44,081 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 04:58:44,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2020-12-22 04:58:44,170 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbd1a57d/8e8f0f0dfe724a49bfe378db7c555bdc/FLAG25efcd855 [2020-12-22 04:58:44,757 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 04:58:44,758 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/cohencu-ll_valuebound10.c [2020-12-22 04:58:44,765 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbd1a57d/8e8f0f0dfe724a49bfe378db7c555bdc/FLAG25efcd855 [2020-12-22 04:58:45,124 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3bbd1a57d/8e8f0f0dfe724a49bfe378db7c555bdc [2020-12-22 04:58:45,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 04:58:45,132 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 04:58:45,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 04:58:45,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 04:58:45,138 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 04:58:45,139 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,141 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4847a6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45, skipping insertion in model container [2020-12-22 04:58:45,141 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,150 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 04:58:45,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 04:58:45,315 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/cohencu-ll_valuebound10.c[588,601] [2020-12-22 04:58:45,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:58:45,372 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 04:58:45,392 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/cohencu-ll_valuebound10.c[588,601] [2020-12-22 04:58:45,424 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 04:58:45,455 INFO L208 MainTranslator]: Completed translation [2020-12-22 04:58:45,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45 WrapperNode [2020-12-22 04:58:45,456 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 04:58:45,459 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 04:58:45,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 04:58:45,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 04:58:45,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,493 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,542 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 04:58:45,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 04:58:45,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 04:58:45,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 04:58:45,564 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,569 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,588 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,602 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (1/1) ... [2020-12-22 04:58:45,610 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 04:58:45,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 04:58:45,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 04:58:45,615 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 04:58:45,616 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (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 [2020-12-22 04:58:45,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 04:58:45,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 04:58:45,738 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 04:58:45,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 04:58:46,238 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 04:58:46,239 INFO L299 CfgBuilder]: Removed 29 assume(true) statements. [2020-12-22 04:58:46,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:58:46 BoogieIcfgContainer [2020-12-22 04:58:46,241 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 04:58:46,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 04:58:46,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 04:58:46,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 04:58:46,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 04:58:45" (1/3) ... [2020-12-22 04:58:46,252 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7586ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:58:46, skipping insertion in model container [2020-12-22 04:58:46,253 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 04:58:45" (2/3) ... [2020-12-22 04:58:46,254 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7586ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 04:58:46, skipping insertion in model container [2020-12-22 04:58:46,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:58:46" (3/3) ... [2020-12-22 04:58:46,257 INFO L111 eAbstractionObserver]: Analyzing ICFG cohencu-ll_valuebound10.c [2020-12-22 04:58:46,268 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 04:58:46,274 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2020-12-22 04:58:46,294 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-12-22 04:58:46,340 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 04:58:46,340 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 04:58:46,340 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 04:58:46,340 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 04:58:46,340 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 04:58:46,340 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 04:58:46,341 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 04:58:46,341 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 04:58:46,361 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states. [2020-12-22 04:58:46,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:58:46,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:46,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:46,373 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:46,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:46,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1804972333, now seen corresponding path program 1 times [2020-12-22 04:58:46,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:46,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906070431] [2020-12-22 04:58:46,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:46,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:46,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:46,608 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906070431] [2020-12-22 04:58:46,609 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:58:46,610 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 04:58:46,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060191149] [2020-12-22 04:58:46,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 04:58:46,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:46,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 04:58:46,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 04:58:46,638 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 2 states. [2020-12-22 04:58:46,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:46,673 INFO L93 Difference]: Finished difference Result 103 states and 130 transitions. [2020-12-22 04:58:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 04:58:46,675 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 7 [2020-12-22 04:58:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:46,696 INFO L225 Difference]: With dead ends: 103 [2020-12-22 04:58:46,696 INFO L226 Difference]: Without dead ends: 49 [2020-12-22 04:58:46,704 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 [2020-12-22 04:58:46,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-12-22 04:58:46,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-12-22 04:58:46,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-22 04:58:46,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2020-12-22 04:58:46,753 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 7 [2020-12-22 04:58:46,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:46,753 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2020-12-22 04:58:46,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 04:58:46,754 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2020-12-22 04:58:46,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-22 04:58:46,754 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:46,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:46,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 04:58:46,758 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:46,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:46,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1806819375, now seen corresponding path program 1 times [2020-12-22 04:58:46,760 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:46,761 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690859826] [2020-12-22 04:58:46,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:46,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:46,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:46,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690859826] [2020-12-22 04:58:46,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:58:46,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-22 04:58:46,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970169686] [2020-12-22 04:58:46,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-22 04:58:46,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:46,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-22 04:58:46,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-22 04:58:46,886 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand 4 states. [2020-12-22 04:58:47,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:47,040 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2020-12-22 04:58:47,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:58:47,041 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-12-22 04:58:47,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:47,042 INFO L225 Difference]: With dead ends: 50 [2020-12-22 04:58:47,042 INFO L226 Difference]: Without dead ends: 46 [2020-12-22 04:58:47,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-22 04:58:47,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-12-22 04:58:47,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-12-22 04:58:47,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-12-22 04:58:47,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-12-22 04:58:47,052 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 7 [2020-12-22 04:58:47,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:47,053 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-12-22 04:58:47,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-22 04:58:47,053 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-12-22 04:58:47,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 04:58:47,053 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:47,054 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:47,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-22 04:58:47,054 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:47,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:47,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1186787538, now seen corresponding path program 1 times [2020-12-22 04:58:47,055 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:47,055 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991199107] [2020-12-22 04:58:47,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:47,072 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:47,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1258414676] [2020-12-22 04:58:47,073 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 [2020-12-22 04:58:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:47,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:58:47,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:47,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:47,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991199107] [2020-12-22 04:58:47,241 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:47,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258414676] [2020-12-22 04:58:47,242 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:58:47,242 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:58:47,243 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986073660] [2020-12-22 04:58:47,243 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:58:47,243 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:47,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:58:47,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:58:47,245 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 6 states. [2020-12-22 04:58:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:47,548 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-12-22 04:58:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:58:47,549 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 04:58:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:47,551 INFO L225 Difference]: With dead ends: 87 [2020-12-22 04:58:47,551 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 04:58:47,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:58:47,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 04:58:47,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 66. [2020-12-22 04:58:47,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:58:47,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-12-22 04:58:47,570 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 9 [2020-12-22 04:58:47,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:47,570 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-12-22 04:58:47,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:58:47,571 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-12-22 04:58:47,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-22 04:58:47,571 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:47,572 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:47,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-12-22 04:58:47,786 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:47,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1958320619, now seen corresponding path program 1 times [2020-12-22 04:58:47,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:47,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910271432] [2020-12-22 04:58:47,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:47,825 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:47,826 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [388786898] [2020-12-22 04:58:47,826 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 [2020-12-22 04:58:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:47,898 INFO L263 TraceCheckSpWp]: Trace formula consists of 63 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-22 04:58:47,901 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:48,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910271432] [2020-12-22 04:58:48,059 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:48,059 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [388786898] [2020-12-22 04:58:48,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:58:48,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:58:48,060 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272238793] [2020-12-22 04:58:48,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:58:48,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:48,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:58:48,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:58:48,062 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 6 states. [2020-12-22 04:58:48,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:48,207 INFO L93 Difference]: Finished difference Result 78 states and 78 transitions. [2020-12-22 04:58:48,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-22 04:58:48,208 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-12-22 04:58:48,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:48,209 INFO L225 Difference]: With dead ends: 78 [2020-12-22 04:58:48,209 INFO L226 Difference]: Without dead ends: 74 [2020-12-22 04:58:48,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:58:48,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-22 04:58:48,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 66. [2020-12-22 04:58:48,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-12-22 04:58:48,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 69 transitions. [2020-12-22 04:58:48,222 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 69 transitions. Word has length 11 [2020-12-22 04:58:48,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:48,222 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 69 transitions. [2020-12-22 04:58:48,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:58:48,223 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 69 transitions. [2020-12-22 04:58:48,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-22 04:58:48,223 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:48,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:48,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:48,437 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:48,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash -750282760, now seen corresponding path program 1 times [2020-12-22 04:58:48,439 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:48,440 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [620580810] [2020-12-22 04:58:48,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:48,462 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:48,462 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [994840992] [2020-12-22 04:58:48,463 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 [2020-12-22 04:58:48,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:48,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-22 04:58:48,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:48,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [620580810] [2020-12-22 04:58:48,578 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:48,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994840992] [2020-12-22 04:58:48,579 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:58:48,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 04:58:48,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211527446] [2020-12-22 04:58:48,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 04:58:48,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:48,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 04:58:48,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-12-22 04:58:48,581 INFO L87 Difference]: Start difference. First operand 66 states and 69 transitions. Second operand 6 states. [2020-12-22 04:58:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:48,747 INFO L93 Difference]: Finished difference Result 75 states and 75 transitions. [2020-12-22 04:58:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-22 04:58:48,747 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-12-22 04:58:48,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:48,748 INFO L225 Difference]: With dead ends: 75 [2020-12-22 04:58:48,748 INFO L226 Difference]: Without dead ends: 57 [2020-12-22 04:58:48,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:58:48,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-22 04:58:48,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-12-22 04:58:48,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-12-22 04:58:48,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2020-12-22 04:58:48,757 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 13 [2020-12-22 04:58:48,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:48,758 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2020-12-22 04:58:48,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 04:58:48,758 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2020-12-22 04:58:48,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-22 04:58:48,759 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:48,759 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:48,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:48,973 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:48,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:48,975 INFO L82 PathProgramCache]: Analyzing trace with hash 41188983, now seen corresponding path program 1 times [2020-12-22 04:58:48,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:48,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928285857] [2020-12-22 04:58:48,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:48,987 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:48,988 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [45433884] [2020-12-22 04:58:48,988 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 [2020-12-22 04:58:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:49,048 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 23 conjunts are in the unsatisfiable core [2020-12-22 04:58:49,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:49,164 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:49,165 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928285857] [2020-12-22 04:58:49,165 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:49,166 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [45433884] [2020-12-22 04:58:49,166 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:49,166 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:58:49,166 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269646266] [2020-12-22 04:58:49,167 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:58:49,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:58:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:58:49,170 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand 7 states. [2020-12-22 04:58:49,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:49,403 INFO L93 Difference]: Finished difference Result 98 states and 98 transitions. [2020-12-22 04:58:49,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-22 04:58:49,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-12-22 04:58:49,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:49,407 INFO L225 Difference]: With dead ends: 98 [2020-12-22 04:58:49,407 INFO L226 Difference]: Without dead ends: 92 [2020-12-22 04:58:49,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:58:49,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-12-22 04:58:49,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 77. [2020-12-22 04:58:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-22 04:58:49,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 83 transitions. [2020-12-22 04:58:49,429 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 83 transitions. Word has length 20 [2020-12-22 04:58:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:49,429 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 83 transitions. [2020-12-22 04:58:49,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:58:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 83 transitions. [2020-12-22 04:58:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-22 04:58:49,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:49,430 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:49,645 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:49,646 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:49,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:49,647 INFO L82 PathProgramCache]: Analyzing trace with hash 928063098, now seen corresponding path program 1 times [2020-12-22 04:58:49,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:49,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720203413] [2020-12-22 04:58:49,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:49,664 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:49,664 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804853299] [2020-12-22 04:58:49,664 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 [2020-12-22 04:58:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:49,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:58:49,743 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:49,861 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:49,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720203413] [2020-12-22 04:58:49,861 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:49,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804853299] [2020-12-22 04:58:49,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:49,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 04:58:49,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162474192] [2020-12-22 04:58:49,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 04:58:49,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:49,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 04:58:49,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-22 04:58:49,864 INFO L87 Difference]: Start difference. First operand 77 states and 83 transitions. Second operand 7 states. [2020-12-22 04:58:50,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:50,055 INFO L93 Difference]: Finished difference Result 91 states and 91 transitions. [2020-12-22 04:58:50,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-22 04:58:50,055 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-12-22 04:58:50,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:50,056 INFO L225 Difference]: With dead ends: 91 [2020-12-22 04:58:50,057 INFO L226 Difference]: Without dead ends: 81 [2020-12-22 04:58:50,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 04:58:50,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-12-22 04:58:50,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-12-22 04:58:50,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 04:58:50,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 78 transitions. [2020-12-22 04:58:50,065 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 78 transitions. Word has length 22 [2020-12-22 04:58:50,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:50,066 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 78 transitions. [2020-12-22 04:58:50,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 04:58:50,066 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 78 transitions. [2020-12-22 04:58:50,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:58:50,067 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:50,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:50,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-12-22 04:58:50,282 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:50,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:50,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1813911283, now seen corresponding path program 1 times [2020-12-22 04:58:50,283 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:50,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781634593] [2020-12-22 04:58:50,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:50,300 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:50,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1991219495] [2020-12-22 04:58:50,300 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 [2020-12-22 04:58:50,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:50,357 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 26 conjunts are in the unsatisfiable core [2020-12-22 04:58:50,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:50,521 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:58:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:50,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781634593] [2020-12-22 04:58:50,544 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:50,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1991219495] [2020-12-22 04:58:50,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:50,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:58:50,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314112717] [2020-12-22 04:58:50,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:58:50,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:50,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:58:50,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:58:50,546 INFO L87 Difference]: Start difference. First operand 75 states and 78 transitions. Second operand 8 states. [2020-12-22 04:58:50,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:50,992 INFO L93 Difference]: Finished difference Result 81 states and 81 transitions. [2020-12-22 04:58:50,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:58:50,992 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 04:58:50,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:50,993 INFO L225 Difference]: With dead ends: 81 [2020-12-22 04:58:50,993 INFO L226 Difference]: Without dead ends: 79 [2020-12-22 04:58:50,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:58:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-12-22 04:58:51,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-12-22 04:58:51,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-12-22 04:58:51,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 77 transitions. [2020-12-22 04:58:51,004 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 77 transitions. Word has length 31 [2020-12-22 04:58:51,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:51,004 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 77 transitions. [2020-12-22 04:58:51,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:58:51,004 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 77 transitions. [2020-12-22 04:58:51,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-22 04:58:51,005 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:51,005 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:51,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:51,220 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:51,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:51,222 INFO L82 PathProgramCache]: Analyzing trace with hash 1811048370, now seen corresponding path program 2 times [2020-12-22 04:58:51,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:51,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158165504] [2020-12-22 04:58:51,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:51,236 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:51,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [484553208] [2020-12-22 04:58:51,237 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:51,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:58:51,301 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:58:51,302 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-22 04:58:51,304 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:51,423 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:51,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158165504] [2020-12-22 04:58:51,423 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:51,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484553208] [2020-12-22 04:58:51,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:51,424 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:58:51,424 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292064972] [2020-12-22 04:58:51,424 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:58:51,425 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:51,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:58:51,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:58:51,426 INFO L87 Difference]: Start difference. First operand 75 states and 77 transitions. Second operand 8 states. [2020-12-22 04:58:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:51,697 INFO L93 Difference]: Finished difference Result 121 states and 121 transitions. [2020-12-22 04:58:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:58:51,697 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-12-22 04:58:51,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:51,701 INFO L225 Difference]: With dead ends: 121 [2020-12-22 04:58:51,701 INFO L226 Difference]: Without dead ends: 115 [2020-12-22 04:58:51,707 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-12-22 04:58:51,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-22 04:58:51,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-12-22 04:58:51,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 04:58:51,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-12-22 04:58:51,730 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 31 [2020-12-22 04:58:51,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:51,730 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-12-22 04:58:51,731 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:58:51,731 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-12-22 04:58:51,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:58:51,732 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:51,732 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:51,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:51,949 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:51,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:51,951 INFO L82 PathProgramCache]: Analyzing trace with hash -587821098, now seen corresponding path program 1 times [2020-12-22 04:58:51,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:51,952 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410322203] [2020-12-22 04:58:51,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:51,963 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:51,964 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64976801] [2020-12-22 04:58:51,964 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 [2020-12-22 04:58:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 04:58:52,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 22 conjunts are in the unsatisfiable core [2020-12-22 04:58:52,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:52,175 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:58:52,200 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:52,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410322203] [2020-12-22 04:58:52,204 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:52,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64976801] [2020-12-22 04:58:52,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:52,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-12-22 04:58:52,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644775807] [2020-12-22 04:58:52,206 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:58:52,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:52,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:58:52,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:58:52,207 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 8 states. [2020-12-22 04:58:52,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:52,625 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2020-12-22 04:58:52,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 04:58:52,626 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-22 04:58:52,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:52,627 INFO L225 Difference]: With dead ends: 100 [2020-12-22 04:58:52,627 INFO L226 Difference]: Without dead ends: 98 [2020-12-22 04:58:52,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2020-12-22 04:58:52,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-12-22 04:58:52,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 96. [2020-12-22 04:58:52,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-12-22 04:58:52,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2020-12-22 04:58:52,639 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 33 [2020-12-22 04:58:52,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:52,640 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2020-12-22 04:58:52,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 04:58:52,640 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2020-12-22 04:58:52,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-22 04:58:52,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:52,641 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:52,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-12-22 04:58:52,855 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:52,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:52,857 INFO L82 PathProgramCache]: Analyzing trace with hash 955884789, now seen corresponding path program 2 times [2020-12-22 04:58:52,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:52,857 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [834522643] [2020-12-22 04:58:52,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:52,872 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:52,873 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293987749] [2020-12-22 04:58:52,873 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 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 [2020-12-22 04:58:52,941 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:58:52,941 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:58:52,943 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 04:58:52,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 04:58:53,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [834522643] [2020-12-22 04:58:53,137 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:53,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293987749] [2020-12-22 04:58:53,138 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:53,138 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:58:53,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661094449] [2020-12-22 04:58:53,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:58:53,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:53,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:58:53,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 04:58:53,143 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand 10 states. [2020-12-22 04:58:53,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:58:53,418 INFO L93 Difference]: Finished difference Result 111 states and 112 transitions. [2020-12-22 04:58:53,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 04:58:53,419 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-12-22 04:58:53,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:58:53,422 INFO L225 Difference]: With dead ends: 111 [2020-12-22 04:58:53,422 INFO L226 Difference]: Without dead ends: 89 [2020-12-22 04:58:53,423 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 04:58:53,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-12-22 04:58:53,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 84. [2020-12-22 04:58:53,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 04:58:53,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 86 transitions. [2020-12-22 04:58:53,440 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 86 transitions. Word has length 33 [2020-12-22 04:58:53,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:58:53,440 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 86 transitions. [2020-12-22 04:58:53,440 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:58:53,441 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 86 transitions. [2020-12-22 04:58:53,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 04:58:53,446 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:58:53,446 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 04:58:53,660 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:58:53,661 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:58:53,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:58:53,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1745507624, now seen corresponding path program 2 times [2020-12-22 04:58:53,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:58:53,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814846656] [2020-12-22 04:58:53,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:58:53,686 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:58:53,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [880155460] [2020-12-22 04:58:53,690 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 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 [2020-12-22 04:58:53,778 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 04:58:53,778 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:58:53,779 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 40 conjunts are in the unsatisfiable core [2020-12-22 04:58:53,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:58:56,008 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (+ (* c_ULTIMATE.start_main_~z~0 (- 1)) c_ULTIMATE.start_main_~x~0 12) 2))) (and (= (+ (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) (* 2 (* .cse0 .cse0)) 6) (+ (* 3 (* .cse0 c_ULTIMATE.start_main_~x~0)) (* 4 c_ULTIMATE.start_main_~x~0) (* 16 .cse0))) (<= 1 c_ULTIMATE.start_main_~a~0) (<= c_ULTIMATE.start_main_~n~0 2) (= 0 (mod (+ c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 2)) (= (+ (* 2 .cse0) 6) c_ULTIMATE.start_main_~x~0))) is different from false [2020-12-22 04:58:58,088 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (+ (* c_ULTIMATE.start_main_~z~0 (- 1)) c_ULTIMATE.start_main_~x~0 12) 2))) (and (= (+ (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) (* 2 (* .cse0 .cse0)) 6) (+ (* 3 (* .cse0 c_ULTIMATE.start_main_~x~0)) (* 4 c_ULTIMATE.start_main_~x~0) (* 16 .cse0))) (<= 1 c_ULTIMATE.start_main_~a~0) (= 0 (mod (+ c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 2)) (= (+ (* 2 .cse0) 6) c_ULTIMATE.start_main_~x~0) (< c_ULTIMATE.start_main_~a~0 2))) is different from false [2020-12-22 04:58:58,182 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:58:58,189 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 04:58:58,196 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:58:58,203 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 04:58:58,218 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-22 04:58:58,280 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 22 not checked. [2020-12-22 04:58:58,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814846656] [2020-12-22 04:58:58,280 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:58:58,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880155460] [2020-12-22 04:58:58,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 04:58:58,281 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 04:58:58,281 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315351101] [2020-12-22 04:58:58,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 04:58:58,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:58:58,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 04:58:58,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=41, Unknown=2, NotChecked=26, Total=90 [2020-12-22 04:58:58,288 INFO L87 Difference]: Start difference. First operand 84 states and 86 transitions. Second operand 10 states. [2020-12-22 04:59:00,508 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (div (+ (* c_ULTIMATE.start_main_~z~0 (- 1)) c_ULTIMATE.start_main_~x~0 12) 2))) (and (= (+ (* c_ULTIMATE.start_main_~x~0 c_ULTIMATE.start_main_~x~0) (* 2 (* .cse0 .cse0)) 6) (+ (* 3 (* .cse0 c_ULTIMATE.start_main_~x~0)) (* 4 c_ULTIMATE.start_main_~x~0) (* 16 .cse0))) (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 c_ULTIMATE.start_main_~a~0) (<= c_ULTIMATE.start_main_~n~0 2) (= 0 (mod (+ c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) 2)) (= (+ (* 2 .cse0) 6) c_ULTIMATE.start_main_~x~0))) is different from false [2020-12-22 04:59:00,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 04:59:00,637 INFO L93 Difference]: Finished difference Result 86 states and 87 transitions. [2020-12-22 04:59:00,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-22 04:59:00,638 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 42 [2020-12-22 04:59:00,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 04:59:00,639 INFO L225 Difference]: With dead ends: 86 [2020-12-22 04:59:00,639 INFO L226 Difference]: Without dead ends: 84 [2020-12-22 04:59:00,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=34, Invalid=65, Unknown=3, NotChecked=54, Total=156 [2020-12-22 04:59:00,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-22 04:59:00,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-12-22 04:59:00,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-12-22 04:59:00,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-12-22 04:59:00,650 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 42 [2020-12-22 04:59:00,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 04:59:00,650 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-12-22 04:59:00,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 04:59:00,650 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-12-22 04:59:00,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-22 04:59:00,651 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 04:59:00,651 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-12-22 04:59:00,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 04:59:00,866 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 04:59:00,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 04:59:00,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1748370537, now seen corresponding path program 3 times [2020-12-22 04:59:00,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 04:59:00,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395035710] [2020-12-22 04:59:00,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 04:59:00,878 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 04:59:00,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [597463436] [2020-12-22 04:59:00,878 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 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 [2020-12-22 04:59:00,991 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-12-22 04:59:00,991 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 04:59:00,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 25 conjunts are in the unsatisfiable core [2020-12-22 04:59:00,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 04:59:01,078 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 04:59:01,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-12-22 04:59:01,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395035710] [2020-12-22 04:59:01,340 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 04:59:01,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597463436] [2020-12-22 04:59:01,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 04:59:01,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-22 04:59:01,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132071287] [2020-12-22 04:59:01,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-22 04:59:01,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 04:59:01,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-22 04:59:01,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-12-22 04:59:01,342 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 8 states. [2020-12-22 04:59:23,246 WARN L197 SmtUtils]: Spent 19.52 s on a formula simplification. DAG size of input: 36 DAG size of output: 35 [2020-12-22 04:59:23,536 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 26 [2020-12-22 04:59:47,199 WARN L197 SmtUtils]: Spent 8.11 s on a formula simplification that was a NOOP. DAG size: 36 [2020-12-22 05:00:11,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:00:11,570 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-12-22 05:00:11,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-12-22 05:00:11,570 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 42 [2020-12-22 05:00:11,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:00:11,571 INFO L225 Difference]: With dead ends: 84 [2020-12-22 05:00:11,571 INFO L226 Difference]: Without dead ends: 80 [2020-12-22 05:00:11,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 30.6s TimeCoverageRelationStatistics Valid=56, Invalid=125, Unknown=1, NotChecked=0, Total=182 [2020-12-22 05:00:11,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-12-22 05:00:11,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-12-22 05:00:11,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-12-22 05:00:11,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 81 transitions. [2020-12-22 05:00:11,585 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 81 transitions. Word has length 42 [2020-12-22 05:00:11,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:00:11,588 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 81 transitions. [2020-12-22 05:00:11,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-22 05:00:11,589 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 81 transitions. [2020-12-22 05:00:11,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-22 05:00:11,589 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:00:11,590 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:00:11,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-22 05:00:11,796 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:00:11,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:00:11,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1899544187, now seen corresponding path program 2 times [2020-12-22 05:00:11,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:00:11,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012966873] [2020-12-22 05:00:11,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:00:11,807 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:00:11,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [291855274] [2020-12-22 05:00:11,808 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 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 [2020-12-22 05:00:12,068 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-22 05:00:12,068 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:00:12,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 44 conjunts are in the unsatisfiable core [2020-12-22 05:00:12,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:00:14,328 WARN L838 $PredicateComparison]: unable to prove that (and (= c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (= c_ULTIMATE.start_main_~z~0 (+ (* 6 c_ULTIMATE.start_main_~n~0) 6)) (let ((.cse0 (= (+ (* 12 c_ULTIMATE.start_main_~y~0) (* 18 c_ULTIMATE.start_main_~x~0) 6) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (* 2 c_ULTIMATE.start_main_~z~0))))) (or (and .cse0 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse0)))) (<= 0 c_ULTIMATE.start_main_~a~0) (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 1)) (<= c_ULTIMATE.start_main_~a~0 10)) is different from false [2020-12-22 05:00:24,537 WARN L197 SmtUtils]: Spent 8.16 s on a formula simplification that was a NOOP. DAG size: 33 [2020-12-22 05:00:26,553 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* 12 c_ULTIMATE.start_main_~y~0))) (and (= (+ .cse0 (* 18 c_ULTIMATE.start_main_~x~0) 6) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (* 2 c_ULTIMATE.start_main_~z~0))) (= c_ULTIMATE.start_main_~x~0 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) (= c_ULTIMATE.start_main_~z~0 (+ (* 6 c_ULTIMATE.start_main_~n~0) 6)) (<= 0 c_ULTIMATE.start_main_~a~0) (= c_ULTIMATE.start_main_~y~0 (+ (* 3 c_ULTIMATE.start_main_~n~0) (* 3 (* c_ULTIMATE.start_main_~n~0 c_ULTIMATE.start_main_~n~0)) 1)) (<= c_ULTIMATE.start_main_~a~0 10) (let ((.cse1 (= (+ .cse0 (* 6 c_ULTIMATE.start_main_~z~0)) (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) 12)))) (or (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse1) (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse1)))))) is different from false [2020-12-22 05:00:51,206 WARN L197 SmtUtils]: Spent 20.59 s on a formula simplification that was a NOOP. DAG size: 38 [2020-12-22 05:01:16,459 WARN L197 SmtUtils]: Spent 22.79 s on a formula simplification that was a NOOP. DAG size: 39 [2020-12-22 05:01:30,211 WARN L197 SmtUtils]: Spent 10.09 s on a formula simplification that was a NOOP. DAG size: 44 [2020-12-22 05:01:48,960 WARN L197 SmtUtils]: Spent 16.38 s on a formula simplification that was a NOOP. DAG size: 55 [2020-12-22 05:01:58,056 WARN L197 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 48 DAG size of output: 30 [2020-12-22 05:01:58,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012966873] [2020-12-22 05:01:58,063 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:01:58,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [291855274] [2020-12-22 05:01:58,064 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-12-22 05:01:58,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:01:58,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-12-22 05:01:58,064 ERROR L205 FreeRefinementEngine]: Strategy CAMEL failed to provide any proof altough trace is infeasible [2020-12-22 05:01:58,064 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-22 05:01:58,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-12-22 05:01:58,290 WARN L227 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-12-22 05:01:58,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:01:58 BoogieIcfgContainer [2020-12-22 05:01:58,290 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:01:58,291 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:01:58,291 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:01:58,291 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:01:58,292 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 04:58:46" (3/4) ... [2020-12-22 05:01:58,295 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-22 05:01:58,295 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:01:58,296 INFO L168 Benchmark]: Toolchain (without parser) took 193164.90 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 131.4 MB in the beginning and 95.0 MB in the end (delta: 36.4 MB). Peak memory consumption was 106.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:01:58,297 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:01:58,297 INFO L168 Benchmark]: CACSL2BoogieTranslator took 322.54 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-12-22 05:01:58,298 INFO L168 Benchmark]: Boogie Procedure Inliner took 84.66 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 119.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:01:58,298 INFO L168 Benchmark]: Boogie Preprocessor took 65.81 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 118.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:01:58,299 INFO L168 Benchmark]: RCFGBuilder took 626.90 ms. Allocated memory is still 156.2 MB. Free memory was 117.7 MB in the beginning and 136.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:01:58,300 INFO L168 Benchmark]: TraceAbstraction took 192046.02 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 136.3 MB in the beginning and 95.5 MB in the end (delta: 40.8 MB). Peak memory consumption was 111.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:01:58,300 INFO L168 Benchmark]: Witness Printer took 4.35 ms. Allocated memory is still 225.4 MB. Free memory was 95.5 MB in the beginning and 95.0 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:01:58,305 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 156.2 MB. Free memory is still 128.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 322.54 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.0 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 84.66 ms. Allocated memory is still 156.2 MB. Free memory was 120.8 MB in the beginning and 119.2 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 65.81 ms. Allocated memory is still 156.2 MB. Free memory was 119.2 MB in the beginning and 118.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 626.90 ms. Allocated memory is still 156.2 MB. Free memory was 117.7 MB in the beginning and 136.8 MB in the end (delta: -19.0 MB). Peak memory consumption was 19.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 192046.02 ms. Allocated memory was 156.2 MB in the beginning and 225.4 MB in the end (delta: 69.2 MB). Free memory was 136.3 MB in the beginning and 95.5 MB in the end (delta: 40.8 MB). Peak memory consumption was 111.0 MB. Max. memory is 8.0 GB. * Witness Printer took 4.35 ms. Allocated memory is still 225.4 MB. Free memory was 95.5 MB in the beginning and 95.0 MB in the end (delta: 522.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 17]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L23] short a; [L24] long long n, x, y, z; [L25] a = __VERIFIER_nondet_ushort() [L12] COND FALSE !(!cond) [L28] n = 0 [L29] x = 0 [L30] y = 1 [L31] z = 6 [L33] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND FALSE !(!(n <= a)) [L42] n = n + 1 [L43] x = x + y [L44] y = y + z [L45] z = z + 6 [L33] COND TRUE 1 [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L39] COND TRUE !(n <= a) [L15] COND FALSE !(!(cond)) [L15] COND FALSE !(!(cond)) [L15] COND TRUE !(cond) [L17] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 53 locations, 11 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 191.9s, OverallIterations: 14, TraceHistogramMax: 4, AutomataDifference: 75.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 403 SDtfs, 687 SDslu, 1107 SDs, 0 SdLazy, 1508 SolverSat, 275 SolverUnsat, 17 SolverUnknown, 0 SolverNotchecked, 41.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 321 GetRequests, 219 SyntacticMatches, 1 SemanticMatches, 101 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 38.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 13 MinimizatonAttempts, 74 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 301 NumberOfCodeBlocks, 279 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 288 ConstructedInterpolants, 1 QuantifiedInterpolants, 124424 SizeOfPredicates, 81 NumberOfNonLiveVariables, 1120 ConjunctsInSsa, 283 ConjunctsInUnsatCore, 13 InterpolantComputations, 6 PerfectInterpolantSequences, 45/152 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 could not prove your program: unable to determine feasibility of some traces Received shutdown request...