/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/array-multidimensional/init-non-constant-2-n-u.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-21 22:29:59,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-21 22:29:59,628 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-21 22:29:59,683 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-21 22:29:59,684 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-21 22:29:59,689 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-21 22:29:59,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-21 22:29:59,702 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-21 22:29:59,706 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-21 22:29:59,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-21 22:29:59,714 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-21 22:29:59,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-21 22:29:59,716 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-21 22:29:59,720 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-21 22:29:59,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-21 22:29:59,725 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-21 22:29:59,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-21 22:29:59,732 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-21 22:29:59,740 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-21 22:29:59,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-21 22:29:59,751 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-21 22:29:59,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-21 22:29:59,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-21 22:29:59,758 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-21 22:29:59,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-21 22:29:59,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-21 22:29:59,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-21 22:29:59,794 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-21 22:29:59,795 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-21 22:29:59,826 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-21 22:29:59,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-21 22:29:59,828 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-21 22:29:59,829 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-21 22:29:59,829 INFO L138 SettingsManager]: * Use SBE=true [2020-12-21 22:29:59,829 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-21 22:29:59,829 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-21 22:29:59,830 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-21 22:29:59,830 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-21 22:29:59,830 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-21 22:29:59,830 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-21 22:29:59,830 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-21 22:29:59,831 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-21 22:29:59,831 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-21 22:29:59,831 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-21 22:29:59,831 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-21 22:29:59,832 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-21 22:29:59,832 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-21 22:29:59,832 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-21 22:29:59,832 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-21 22:29:59,832 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-21 22:29:59,833 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-21 22:29:59,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-21 22:29:59,833 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-21 22:29:59,833 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-21 22:29:59,834 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-21 22:30:00,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-21 22:30:00,273 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-21 22:30:00,276 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-21 22:30:00,278 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-21 22:30:00,279 INFO L275 PluginConnector]: CDTParser initialized [2020-12-21 22:30:00,280 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c [2020-12-21 22:30:00,389 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51741f2cf/d9272fad51d849eb9501090205198486/FLAGceb901b53 [2020-12-21 22:30:01,178 INFO L306 CDTParser]: Found 1 translation units. [2020-12-21 22:30:01,179 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-multidimensional/init-non-constant-2-n-u.c [2020-12-21 22:30:01,188 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51741f2cf/d9272fad51d849eb9501090205198486/FLAGceb901b53 [2020-12-21 22:30:01,508 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51741f2cf/d9272fad51d849eb9501090205198486 [2020-12-21 22:30:01,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-21 22:30:01,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-21 22:30:01,515 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-21 22:30:01,515 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-21 22:30:01,520 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-21 22:30:01,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,522 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5318e7af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01, skipping insertion in model container [2020-12-21 22:30:01,522 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-21 22:30:01,554 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-21 22:30:01,734 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/array-multidimensional/init-non-constant-2-n-u.c[421,434] [2020-12-21 22:30:01,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 22:30:01,764 INFO L203 MainTranslator]: Completed pre-run [2020-12-21 22:30:01,778 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/array-multidimensional/init-non-constant-2-n-u.c[421,434] [2020-12-21 22:30:01,788 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-21 22:30:01,807 INFO L208 MainTranslator]: Completed translation [2020-12-21 22:30:01,807 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01 WrapperNode [2020-12-21 22:30:01,808 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-21 22:30:01,809 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-21 22:30:01,809 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-21 22:30:01,809 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-21 22:30:01,819 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,828 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,852 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-21 22:30:01,853 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-21 22:30:01,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-21 22:30:01,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-21 22:30:01,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,865 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,873 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,879 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,881 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (1/1) ... [2020-12-21 22:30:01,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-21 22:30:01,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-21 22:30:01,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-21 22:30:01,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-21 22:30:01,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (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 [2020-12-21 22:30:01,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-21 22:30:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-21 22:30:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-21 22:30:01,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-21 22:30:01,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-21 22:30:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-12-21 22:30:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-21 22:30:02,330 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-21 22:30:02,333 INFO L299 CfgBuilder]: Removed 14 assume(true) statements. [2020-12-21 22:30:02,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:30:02 BoogieIcfgContainer [2020-12-21 22:30:02,339 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-21 22:30:02,344 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-21 22:30:02,345 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-21 22:30:02,349 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-21 22:30:02,350 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.12 10:30:01" (1/3) ... [2020-12-21 22:30:02,351 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdfd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:30:02, skipping insertion in model container [2020-12-21 22:30:02,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.12 10:30:01" (2/3) ... [2020-12-21 22:30:02,352 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5cdfd763 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.12 10:30:02, skipping insertion in model container [2020-12-21 22:30:02,352 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.12 10:30:02" (3/3) ... [2020-12-21 22:30:02,355 INFO L111 eAbstractionObserver]: Analyzing ICFG init-non-constant-2-n-u.c [2020-12-21 22:30:02,363 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-21 22:30:02,370 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-21 22:30:02,396 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-21 22:30:02,436 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-21 22:30:02,436 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-21 22:30:02,437 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-21 22:30:02,437 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-21 22:30:02,440 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-21 22:30:02,440 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-21 22:30:02,441 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-21 22:30:02,441 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-21 22:30:02,474 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-12-21 22:30:02,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-21 22:30:02,490 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:02,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:02,493 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:02,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:02,508 INFO L82 PathProgramCache]: Analyzing trace with hash 523505315, now seen corresponding path program 1 times [2020-12-21 22:30:02,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:02,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682241913] [2020-12-21 22:30:02,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:02,697 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:02,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [366021834] [2020-12-21 22:30:02,699 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 [2020-12-21 22:30:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:02,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-21 22:30:02,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:02,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:02,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682241913] [2020-12-21 22:30:02,853 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:02,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366021834] [2020-12-21 22:30:02,854 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 22:30:02,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-21 22:30:02,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099457853] [2020-12-21 22:30:02,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-21 22:30:02,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:02,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-21 22:30:02,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-21 22:30:02,882 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-12-21 22:30:02,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:02,903 INFO L93 Difference]: Finished difference Result 37 states and 56 transitions. [2020-12-21 22:30:02,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-21 22:30:02,905 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-12-21 22:30:02,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:02,915 INFO L225 Difference]: With dead ends: 37 [2020-12-21 22:30:02,915 INFO L226 Difference]: Without dead ends: 16 [2020-12-21 22:30:02,918 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-21 22:30:02,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-12-21 22:30:02,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-12-21 22:30:02,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-12-21 22:30:02,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2020-12-21 22:30:02,960 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 11 [2020-12-21 22:30:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:02,961 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2020-12-21 22:30:02,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-21 22:30:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2020-12-21 22:30:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-21 22:30:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:02,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:03,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-21 22:30:03,178 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:03,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1316396249, now seen corresponding path program 1 times [2020-12-21 22:30:03,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:03,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428726727] [2020-12-21 22:30:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:03,194 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:03,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1772890375] [2020-12-21 22:30:03,195 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 [2020-12-21 22:30:03,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:03,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 22:30:03,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:03,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:03,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428726727] [2020-12-21 22:30:03,339 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:03,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1772890375] [2020-12-21 22:30:03,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 22:30:03,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-21 22:30:03,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246051005] [2020-12-21 22:30:03,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 22:30:03,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:03,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 22:30:03,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-21 22:30:03,343 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand 5 states. [2020-12-21 22:30:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:03,400 INFO L93 Difference]: Finished difference Result 35 states and 42 transitions. [2020-12-21 22:30:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 22:30:03,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-12-21 22:30:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:03,401 INFO L225 Difference]: With dead ends: 35 [2020-12-21 22:30:03,401 INFO L226 Difference]: Without dead ends: 26 [2020-12-21 22:30:03,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-21 22:30:03,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-21 22:30:03,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 17. [2020-12-21 22:30:03,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-21 22:30:03,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 20 transitions. [2020-12-21 22:30:03,408 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 20 transitions. Word has length 11 [2020-12-21 22:30:03,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:03,408 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 20 transitions. [2020-12-21 22:30:03,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 22:30:03,409 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 20 transitions. [2020-12-21 22:30:03,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-21 22:30:03,410 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:03,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:03,623 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:03,624 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:03,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:03,624 INFO L82 PathProgramCache]: Analyzing trace with hash 1285873139, now seen corresponding path program 1 times [2020-12-21 22:30:03,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:03,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893194920] [2020-12-21 22:30:03,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:03,638 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:03,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1706034917] [2020-12-21 22:30:03,639 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 [2020-12-21 22:30:03,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:03,710 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-21 22:30:03,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:03,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:03,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893194920] [2020-12-21 22:30:03,789 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:03,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706034917] [2020-12-21 22:30:03,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-21 22:30:03,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-21 22:30:03,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265399852] [2020-12-21 22:30:03,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-21 22:30:03,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:03,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-21 22:30:03,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-12-21 22:30:03,792 INFO L87 Difference]: Start difference. First operand 17 states and 20 transitions. Second operand 5 states. [2020-12-21 22:30:03,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:03,863 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2020-12-21 22:30:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-21 22:30:03,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-12-21 22:30:03,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:03,865 INFO L225 Difference]: With dead ends: 47 [2020-12-21 22:30:03,865 INFO L226 Difference]: Without dead ends: 24 [2020-12-21 22:30:03,866 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-12-21 22:30:03,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-21 22:30:03,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2020-12-21 22:30:03,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-21 22:30:03,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2020-12-21 22:30:03,871 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 14 [2020-12-21 22:30:03,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:03,872 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2020-12-21 22:30:03,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-21 22:30:03,872 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2020-12-21 22:30:03,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-21 22:30:03,873 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:03,873 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:04,078 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:04,079 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:04,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:04,081 INFO L82 PathProgramCache]: Analyzing trace with hash -104390634, now seen corresponding path program 1 times [2020-12-21 22:30:04,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:04,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265880043] [2020-12-21 22:30:04,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:04,094 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:04,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2086113407] [2020-12-21 22:30:04,094 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 [2020-12-21 22:30:04,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:04,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-21 22:30:04,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:04,267 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-12-21 22:30:04,270 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:04,277 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:04,279 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:04,279 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-12-21 22:30:04,397 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:04,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265880043] [2020-12-21 22:30:04,398 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:04,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086113407] [2020-12-21 22:30:04,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:04,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-21 22:30:04,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186392129] [2020-12-21 22:30:04,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-21 22:30:04,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:04,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-21 22:30:04,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-12-21 22:30:04,402 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 9 states. [2020-12-21 22:30:04,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:04,602 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2020-12-21 22:30:04,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-21 22:30:04,602 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-12-21 22:30:04,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:04,604 INFO L225 Difference]: With dead ends: 49 [2020-12-21 22:30:04,604 INFO L226 Difference]: Without dead ends: 47 [2020-12-21 22:30:04,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-12-21 22:30:04,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-12-21 22:30:04,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 27. [2020-12-21 22:30:04,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-12-21 22:30:04,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-12-21 22:30:04,613 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 15 [2020-12-21 22:30:04,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:04,613 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-12-21 22:30:04,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-21 22:30:04,614 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-12-21 22:30:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-21 22:30:04,614 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:04,614 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:04,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:04,828 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:04,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:04,829 INFO L82 PathProgramCache]: Analyzing trace with hash -340200154, now seen corresponding path program 1 times [2020-12-21 22:30:04,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:04,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892603779] [2020-12-21 22:30:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:04,842 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:04,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [873862022] [2020-12-21 22:30:04,842 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 [2020-12-21 22:30:04,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:04,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-21 22:30:04,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:05,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:05,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892603779] [2020-12-21 22:30:05,017 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:05,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873862022] [2020-12-21 22:30:05,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:05,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-21 22:30:05,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140435337] [2020-12-21 22:30:05,021 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 22:30:05,021 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:05,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 22:30:05,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-21 22:30:05,023 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 7 states. [2020-12-21 22:30:05,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:05,155 INFO L93 Difference]: Finished difference Result 77 states and 93 transitions. [2020-12-21 22:30:05,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-21 22:30:05,155 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-12-21 22:30:05,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:05,156 INFO L225 Difference]: With dead ends: 77 [2020-12-21 22:30:05,157 INFO L226 Difference]: Without dead ends: 64 [2020-12-21 22:30:05,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-21 22:30:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-12-21 22:30:05,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 49. [2020-12-21 22:30:05,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-12-21 22:30:05,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-12-21 22:30:05,173 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 18 [2020-12-21 22:30:05,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:05,173 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-12-21 22:30:05,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 22:30:05,174 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-12-21 22:30:05,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 22:30:05,174 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:05,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:05,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:05,391 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:05,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:05,391 INFO L82 PathProgramCache]: Analyzing trace with hash -606638647, now seen corresponding path program 2 times [2020-12-21 22:30:05,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:05,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1930909136] [2020-12-21 22:30:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:05,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:05,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1619828994] [2020-12-21 22:30:05,403 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 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 [2020-12-21 22:30:05,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 22:30:05,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:05,534 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-21 22:30:05,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:05,583 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-21 22:30:05,584 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:05,589 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:05,590 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:05,590 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-21 22:30:05,852 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:05,852 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1930909136] [2020-12-21 22:30:05,853 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:05,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619828994] [2020-12-21 22:30:05,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:05,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-21 22:30:05,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83546202] [2020-12-21 22:30:05,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-12-21 22:30:05,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:05,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-12-21 22:30:05,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-12-21 22:30:05,855 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 12 states. [2020-12-21 22:30:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:06,167 INFO L93 Difference]: Finished difference Result 86 states and 105 transitions. [2020-12-21 22:30:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-12-21 22:30:06,168 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2020-12-21 22:30:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:06,169 INFO L225 Difference]: With dead ends: 86 [2020-12-21 22:30:06,169 INFO L226 Difference]: Without dead ends: 84 [2020-12-21 22:30:06,170 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-12-21 22:30:06,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-12-21 22:30:06,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 52. [2020-12-21 22:30:06,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-21 22:30:06,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 65 transitions. [2020-12-21 22:30:06,182 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 65 transitions. Word has length 19 [2020-12-21 22:30:06,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:06,182 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 65 transitions. [2020-12-21 22:30:06,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-12-21 22:30:06,182 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 65 transitions. [2020-12-21 22:30:06,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-21 22:30:06,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:06,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:06,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:06,391 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash 1106169221, now seen corresponding path program 2 times [2020-12-21 22:30:06,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:06,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868651247] [2020-12-21 22:30:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:06,403 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:06,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1752214644] [2020-12-21 22:30:06,404 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 [2020-12-21 22:30:06,475 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 22:30:06,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:06,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 31 conjunts are in the unsatisfiable core [2020-12-21 22:30:06,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:06,671 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:06,672 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 72 [2020-12-21 22:30:06,678 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:06,723 INFO L625 ElimStorePlain]: treesize reduction 28, result has 62.7 percent of original size [2020-12-21 22:30:06,731 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:06,732 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:22 [2020-12-21 22:30:10,895 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:10,895 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 67 [2020-12-21 22:30:10,901 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:10,936 INFO L625 ElimStorePlain]: treesize reduction 35, result has 50.7 percent of original size [2020-12-21 22:30:10,945 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2020-12-21 22:30:10,946 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:36 [2020-12-21 22:30:11,217 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-21 22:30:11,237 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-21 22:30:11,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-21 22:30:11,271 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-21 22:30:11,281 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-21 22:30:11,299 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-21 22:30:11,337 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:11,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868651247] [2020-12-21 22:30:11,338 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:11,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1752214644] [2020-12-21 22:30:11,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:11,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-12-21 22:30:11,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683346437] [2020-12-21 22:30:11,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-21 22:30:11,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:11,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-21 22:30:11,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=120, Unknown=2, NotChecked=0, Total=156 [2020-12-21 22:30:11,341 INFO L87 Difference]: Start difference. First operand 52 states and 65 transitions. Second operand 13 states. [2020-12-21 22:30:23,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:23,016 INFO L93 Difference]: Finished difference Result 104 states and 125 transitions. [2020-12-21 22:30:23,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-12-21 22:30:23,017 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 19 [2020-12-21 22:30:23,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:23,018 INFO L225 Difference]: With dead ends: 104 [2020-12-21 22:30:23,018 INFO L226 Difference]: Without dead ends: 102 [2020-12-21 22:30:23,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=79, Invalid=299, Unknown=2, NotChecked=0, Total=380 [2020-12-21 22:30:23,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-21 22:30:23,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 52. [2020-12-21 22:30:23,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-21 22:30:23,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-12-21 22:30:23,035 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 19 [2020-12-21 22:30:23,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:23,035 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-12-21 22:30:23,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-21 22:30:23,036 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-12-21 22:30:23,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-21 22:30:23,036 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:23,037 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:23,252 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:23,253 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:23,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:23,254 INFO L82 PathProgramCache]: Analyzing trace with hash 1173496307, now seen corresponding path program 1 times [2020-12-21 22:30:23,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:23,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786286353] [2020-12-21 22:30:23,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:23,276 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:23,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [288540389] [2020-12-21 22:30:23,276 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 [2020-12-21 22:30:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:23,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-12-21 22:30:23,363 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-21 22:30:23,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786286353] [2020-12-21 22:30:23,443 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:23,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288540389] [2020-12-21 22:30:23,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:23,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-21 22:30:23,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588014785] [2020-12-21 22:30:23,447 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-21 22:30:23,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:23,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-21 22:30:23,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-12-21 22:30:23,453 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-12-21 22:30:23,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:23,568 INFO L93 Difference]: Finished difference Result 121 states and 147 transitions. [2020-12-21 22:30:23,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-21 22:30:23,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-12-21 22:30:23,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:23,571 INFO L225 Difference]: With dead ends: 121 [2020-12-21 22:30:23,571 INFO L226 Difference]: Without dead ends: 94 [2020-12-21 22:30:23,572 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-21 22:30:23,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-12-21 22:30:23,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 57. [2020-12-21 22:30:23,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-12-21 22:30:23,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2020-12-21 22:30:23,606 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 21 [2020-12-21 22:30:23,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:23,606 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2020-12-21 22:30:23,606 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-21 22:30:23,606 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2020-12-21 22:30:23,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-21 22:30:23,613 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:23,613 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:23,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-21 22:30:23,828 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:23,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:23,829 INFO L82 PathProgramCache]: Analyzing trace with hash 855303827, now seen corresponding path program 3 times [2020-12-21 22:30:23,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:23,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [837671820] [2020-12-21 22:30:23,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:23,840 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:23,841 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [804378640] [2020-12-21 22:30:23,841 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 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 [2020-12-21 22:30:23,918 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-21 22:30:23,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:23,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 119 conjuncts, 8 conjunts are in the unsatisfiable core [2020-12-21 22:30:23,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:24,008 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:24,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [837671820] [2020-12-21 22:30:24,009 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:24,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804378640] [2020-12-21 22:30:24,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:24,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-21 22:30:24,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139420684] [2020-12-21 22:30:24,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-21 22:30:24,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:24,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-21 22:30:24,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-21 22:30:24,011 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 9 states. [2020-12-21 22:30:24,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:24,196 INFO L93 Difference]: Finished difference Result 154 states and 186 transitions. [2020-12-21 22:30:24,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-21 22:30:24,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-12-21 22:30:24,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:24,198 INFO L225 Difference]: With dead ends: 154 [2020-12-21 22:30:24,198 INFO L226 Difference]: Without dead ends: 108 [2020-12-21 22:30:24,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-12-21 22:30:24,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-12-21 22:30:24,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 82. [2020-12-21 22:30:24,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-12-21 22:30:24,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 103 transitions. [2020-12-21 22:30:24,219 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 103 transitions. Word has length 22 [2020-12-21 22:30:24,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:24,219 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 103 transitions. [2020-12-21 22:30:24,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-21 22:30:24,220 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 103 transitions. [2020-12-21 22:30:24,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-21 22:30:24,220 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:24,220 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:24,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:24,434 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:24,435 INFO L82 PathProgramCache]: Analyzing trace with hash -2011802186, now seen corresponding path program 4 times [2020-12-21 22:30:24,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:24,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468951560] [2020-12-21 22:30:24,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:24,444 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:24,444 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1695010131] [2020-12-21 22:30:24,444 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-12-21 22:30:24,689 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-12-21 22:30:24,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:24,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 41 conjunts are in the unsatisfiable core [2020-12-21 22:30:24,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:24,738 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 21 [2020-12-21 22:30:24,739 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:24,750 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:24,751 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:24,752 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:35, output treesize:32 [2020-12-21 22:30:24,791 INFO L348 Elim1Store]: treesize reduction 71, result has 19.3 percent of original size [2020-12-21 22:30:24,792 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 47 [2020-12-21 22:30:24,794 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:24,826 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:24,827 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:24,834 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:57, output treesize:54 [2020-12-21 22:30:24,899 INFO L348 Elim1Store]: treesize reduction 60, result has 22.1 percent of original size [2020-12-21 22:30:24,900 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 34 treesize of output 36 [2020-12-21 22:30:24,902 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:24,915 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:24,916 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:24,916 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:37, output treesize:33 [2020-12-21 22:30:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:25,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468951560] [2020-12-21 22:30:25,239 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:25,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695010131] [2020-12-21 22:30:25,239 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:25,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-12-21 22:30:25,240 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706963001] [2020-12-21 22:30:25,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-12-21 22:30:25,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:25,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-12-21 22:30:25,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-12-21 22:30:25,241 INFO L87 Difference]: Start difference. First operand 82 states and 103 transitions. Second operand 14 states. [2020-12-21 22:30:25,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:25,718 INFO L93 Difference]: Finished difference Result 92 states and 112 transitions. [2020-12-21 22:30:25,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-21 22:30:25,719 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 23 [2020-12-21 22:30:25,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:25,722 INFO L225 Difference]: With dead ends: 92 [2020-12-21 22:30:25,722 INFO L226 Difference]: Without dead ends: 90 [2020-12-21 22:30:25,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=95, Invalid=325, Unknown=0, NotChecked=0, Total=420 [2020-12-21 22:30:25,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-12-21 22:30:25,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2020-12-21 22:30:25,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-12-21 22:30:25,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 106 transitions. [2020-12-21 22:30:25,742 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 106 transitions. Word has length 23 [2020-12-21 22:30:25,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:25,742 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 106 transitions. [2020-12-21 22:30:25,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-12-21 22:30:25,742 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 106 transitions. [2020-12-21 22:30:25,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-21 22:30:25,743 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:25,743 INFO L422 BasicCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:25,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:25,949 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:25,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:25,950 INFO L82 PathProgramCache]: Analyzing trace with hash -1831911179, now seen corresponding path program 5 times [2020-12-21 22:30:25,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:25,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89012041] [2020-12-21 22:30:25,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:25,959 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:25,959 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [465394990] [2020-12-21 22:30:25,959 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-12-21 22:30:26,144 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2020-12-21 22:30:26,144 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:26,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 36 conjunts are in the unsatisfiable core [2020-12-21 22:30:26,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:26,198 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2020-12-21 22:30:26,200 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:26,207 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:26,208 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:26,210 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2020-12-21 22:30:26,285 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:26,285 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 82 [2020-12-21 22:30:26,289 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:26,320 INFO L625 ElimStorePlain]: treesize reduction 39, result has 50.6 percent of original size [2020-12-21 22:30:26,321 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:26,321 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:40 [2020-12-21 22:30:26,400 INFO L348 Elim1Store]: treesize reduction 54, result has 50.5 percent of original size [2020-12-21 22:30:26,403 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 79 [2020-12-21 22:30:26,408 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:26,439 INFO L625 ElimStorePlain]: treesize reduction 18, result has 71.4 percent of original size [2020-12-21 22:30:26,440 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:26,441 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:43, output treesize:45 [2020-12-21 22:30:26,863 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-21 22:30:26,915 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:26,915 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89012041] [2020-12-21 22:30:26,915 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:26,916 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [465394990] [2020-12-21 22:30:26,916 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:26,916 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-12-21 22:30:26,916 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043337135] [2020-12-21 22:30:26,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-12-21 22:30:26,917 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:26,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-12-21 22:30:26,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-12-21 22:30:26,918 INFO L87 Difference]: Start difference. First operand 85 states and 106 transitions. Second operand 16 states. [2020-12-21 22:30:28,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:28,037 INFO L93 Difference]: Finished difference Result 168 states and 205 transitions. [2020-12-21 22:30:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-12-21 22:30:28,038 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-12-21 22:30:28,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:28,039 INFO L225 Difference]: With dead ends: 168 [2020-12-21 22:30:28,040 INFO L226 Difference]: Without dead ends: 166 [2020-12-21 22:30:28,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=557, Unknown=0, NotChecked=0, Total=702 [2020-12-21 22:30:28,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-12-21 22:30:28,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 110. [2020-12-21 22:30:28,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-12-21 22:30:28,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 137 transitions. [2020-12-21 22:30:28,066 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 137 transitions. Word has length 24 [2020-12-21 22:30:28,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:28,067 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 137 transitions. [2020-12-21 22:30:28,067 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-12-21 22:30:28,067 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 137 transitions. [2020-12-21 22:30:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-21 22:30:28,068 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:28,068 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:28,282 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2020-12-21 22:30:28,282 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:28,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:28,283 INFO L82 PathProgramCache]: Analyzing trace with hash 448249890, now seen corresponding path program 2 times [2020-12-21 22:30:28,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:28,284 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509584030] [2020-12-21 22:30:28,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:28,291 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:28,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1637684027] [2020-12-21 22:30:28,292 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 [2020-12-21 22:30:28,372 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 22:30:28,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:28,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-21 22:30:28,376 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:28,430 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 13 [2020-12-21 22:30:28,431 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:28,437 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:28,438 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:28,438 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:17 [2020-12-21 22:30:28,601 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-21 22:30:28,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509584030] [2020-12-21 22:30:28,601 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:28,601 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637684027] [2020-12-21 22:30:28,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:28,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-21 22:30:28,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534568728] [2020-12-21 22:30:28,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-21 22:30:28,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:28,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-21 22:30:28,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-12-21 22:30:28,604 INFO L87 Difference]: Start difference. First operand 110 states and 137 transitions. Second operand 11 states. [2020-12-21 22:30:28,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:28,936 INFO L93 Difference]: Finished difference Result 210 states and 260 transitions. [2020-12-21 22:30:28,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-21 22:30:28,936 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 25 [2020-12-21 22:30:28,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:28,938 INFO L225 Difference]: With dead ends: 210 [2020-12-21 22:30:28,938 INFO L226 Difference]: Without dead ends: 208 [2020-12-21 22:30:28,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2020-12-21 22:30:28,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-12-21 22:30:28,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 137. [2020-12-21 22:30:28,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-21 22:30:28,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 172 transitions. [2020-12-21 22:30:28,976 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 172 transitions. Word has length 25 [2020-12-21 22:30:28,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:28,976 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 172 transitions. [2020-12-21 22:30:28,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-21 22:30:28,976 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 172 transitions. [2020-12-21 22:30:28,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 22:30:28,977 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:28,977 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:29,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:29,192 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:29,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:29,193 INFO L82 PathProgramCache]: Analyzing trace with hash -1620419706, now seen corresponding path program 6 times [2020-12-21 22:30:29,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:29,193 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323016759] [2020-12-21 22:30:29,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:29,206 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:29,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [105638513] [2020-12-21 22:30:29,206 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:29,351 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2020-12-21 22:30:29,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:29,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-21 22:30:29,355 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 16 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:29,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323016759] [2020-12-21 22:30:29,481 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:29,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [105638513] [2020-12-21 22:30:29,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:29,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-12-21 22:30:29,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512419414] [2020-12-21 22:30:29,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-12-21 22:30:29,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:29,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-12-21 22:30:29,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-12-21 22:30:29,483 INFO L87 Difference]: Start difference. First operand 137 states and 172 transitions. Second operand 11 states. [2020-12-21 22:30:29,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:29,799 INFO L93 Difference]: Finished difference Result 334 states and 422 transitions. [2020-12-21 22:30:29,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-21 22:30:29,799 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 26 [2020-12-21 22:30:29,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:29,801 INFO L225 Difference]: With dead ends: 334 [2020-12-21 22:30:29,801 INFO L226 Difference]: Without dead ends: 245 [2020-12-21 22:30:29,803 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-12-21 22:30:29,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2020-12-21 22:30:29,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 189. [2020-12-21 22:30:29,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-21 22:30:29,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 246 transitions. [2020-12-21 22:30:29,857 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 246 transitions. Word has length 26 [2020-12-21 22:30:29,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:29,859 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 246 transitions. [2020-12-21 22:30:29,859 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-12-21 22:30:29,859 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 246 transitions. [2020-12-21 22:30:29,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-21 22:30:29,862 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:29,863 INFO L422 BasicCegarLoop]: trace histogram [6, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:30,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-12-21 22:30:30,077 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:30,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:30,077 INFO L82 PathProgramCache]: Analyzing trace with hash 454342103, now seen corresponding path program 7 times [2020-12-21 22:30:30,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:30,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1662528591] [2020-12-21 22:30:30,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:30,089 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:30,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1679665443] [2020-12-21 22:30:30,089 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:30,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-21 22:30:30,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 48 conjunts are in the unsatisfiable core [2020-12-21 22:30:30,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:30,451 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2020-12-21 22:30:30,452 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:30,462 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:30,463 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:30,463 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:31, output treesize:27 [2020-12-21 22:30:30,506 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:30,506 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 98 [2020-12-21 22:30:30,509 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:30,543 INFO L625 ElimStorePlain]: treesize reduction 30, result has 60.5 percent of original size [2020-12-21 22:30:30,545 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-21 22:30:30,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:50, output treesize:46 [2020-12-21 22:30:30,710 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:30,710 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 67 treesize of output 237 [2020-12-21 22:30:30,715 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:30,801 INFO L625 ElimStorePlain]: treesize reduction 90, result has 50.0 percent of original size [2020-12-21 22:30:30,804 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-21 22:30:30,805 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-12-21 22:30:30,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:79, output treesize:90 [2020-12-21 22:30:30,807 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-21 22:30:30,923 INFO L348 Elim1Store]: treesize reduction 74, result has 54.9 percent of original size [2020-12-21 22:30:30,923 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 55 treesize of output 117 [2020-12-21 22:30:30,934 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:30,977 INFO L625 ElimStorePlain]: treesize reduction 32, result has 65.2 percent of original size [2020-12-21 22:30:30,978 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:30,978 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:64, output treesize:60 [2020-12-21 22:30:31,098 INFO L348 Elim1Store]: treesize reduction 129, result has 34.2 percent of original size [2020-12-21 22:30:31,099 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 57 treesize of output 96 [2020-12-21 22:30:31,109 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:31,147 INFO L625 ElimStorePlain]: treesize reduction 28, result has 66.7 percent of original size [2020-12-21 22:30:31,148 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:31,148 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:60, output treesize:56 [2020-12-21 22:30:31,597 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-21 22:30:31,641 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:31,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1662528591] [2020-12-21 22:30:31,642 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:31,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679665443] [2020-12-21 22:30:31,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:31,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-12-21 22:30:31,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897751252] [2020-12-21 22:30:31,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-12-21 22:30:31,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:31,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-12-21 22:30:31,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=281, Unknown=0, NotChecked=0, Total=342 [2020-12-21 22:30:31,644 INFO L87 Difference]: Start difference. First operand 189 states and 246 transitions. Second operand 19 states. [2020-12-21 22:30:34,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:34,336 INFO L93 Difference]: Finished difference Result 239 states and 301 transitions. [2020-12-21 22:30:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-12-21 22:30:34,337 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 26 [2020-12-21 22:30:34,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:34,339 INFO L225 Difference]: With dead ends: 239 [2020-12-21 22:30:34,339 INFO L226 Difference]: Without dead ends: 237 [2020-12-21 22:30:34,340 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=158, Invalid=964, Unknown=0, NotChecked=0, Total=1122 [2020-12-21 22:30:34,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2020-12-21 22:30:34,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 189. [2020-12-21 22:30:34,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 189 states. [2020-12-21 22:30:34,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 245 transitions. [2020-12-21 22:30:34,380 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 245 transitions. Word has length 26 [2020-12-21 22:30:34,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:34,380 INFO L481 AbstractCegarLoop]: Abstraction has 189 states and 245 transitions. [2020-12-21 22:30:34,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-12-21 22:30:34,381 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 245 transitions. [2020-12-21 22:30:34,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-21 22:30:34,381 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:34,382 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:34,596 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:34,596 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:34,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:34,597 INFO L82 PathProgramCache]: Analyzing trace with hash 220430633, now seen corresponding path program 8 times [2020-12-21 22:30:34,597 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:34,597 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349989785] [2020-12-21 22:30:34,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:34,615 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:34,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [868379015] [2020-12-21 22:30:34,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:35,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-21 22:30:35,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:35,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 38 conjunts are in the unsatisfiable core [2020-12-21 22:30:35,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:35,107 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-12-21 22:30:35,108 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:35,114 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:35,115 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:35,115 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:19, output treesize:15 [2020-12-21 22:30:35,355 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-21 22:30:35,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349989785] [2020-12-21 22:30:35,355 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:30:35,356 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [868379015] [2020-12-21 22:30:35,356 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:30:35,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-12-21 22:30:35,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829749163] [2020-12-21 22:30:35,357 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-12-21 22:30:35,357 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:30:35,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-12-21 22:30:35,358 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-12-21 22:30:35,358 INFO L87 Difference]: Start difference. First operand 189 states and 245 transitions. Second operand 15 states. [2020-12-21 22:30:35,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-21 22:30:35,760 INFO L93 Difference]: Finished difference Result 198 states and 253 transitions. [2020-12-21 22:30:35,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-21 22:30:35,761 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 27 [2020-12-21 22:30:35,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-21 22:30:35,763 INFO L225 Difference]: With dead ends: 198 [2020-12-21 22:30:35,763 INFO L226 Difference]: Without dead ends: 196 [2020-12-21 22:30:35,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2020-12-21 22:30:35,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-12-21 22:30:35,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 192. [2020-12-21 22:30:35,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 192 states. [2020-12-21 22:30:35,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 248 transitions. [2020-12-21 22:30:35,804 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 248 transitions. Word has length 27 [2020-12-21 22:30:35,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-21 22:30:35,804 INFO L481 AbstractCegarLoop]: Abstraction has 192 states and 248 transitions. [2020-12-21 22:30:35,804 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-12-21 22:30:35,804 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 248 transitions. [2020-12-21 22:30:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-21 22:30:35,805 INFO L414 BasicCegarLoop]: Found error trace [2020-12-21 22:30:35,805 INFO L422 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-21 22:30:36,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-12-21 22:30:36,013 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-21 22:30:36,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-21 22:30:36,013 INFO L82 PathProgramCache]: Analyzing trace with hash -513846795, now seen corresponding path program 9 times [2020-12-21 22:30:36,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-21 22:30:36,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554862290] [2020-12-21 22:30:36,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-21 22:30:36,020 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-21 22:30:36,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [357951597] [2020-12-21 22:30:36,020 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 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-21 22:30:36,453 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2020-12-21 22:30:36,453 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-21 22:30:36,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 64 conjunts are in the unsatisfiable core [2020-12-21 22:30:36,458 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-21 22:30:36,473 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-21 22:30:36,475 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,482 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2020-12-21 22:30:36,484 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,505 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:36,507 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2020-12-21 22:30:36,507 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:37, output treesize:27 [2020-12-21 22:30:36,585 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2020-12-21 22:30:36,586 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,599 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:36,601 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,601 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:34, output treesize:30 [2020-12-21 22:30:36,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,639 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 38 [2020-12-21 22:30:36,647 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,665 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:36,666 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,667 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:51, output treesize:47 [2020-12-21 22:30:36,710 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,714 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,716 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:36,717 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 40 [2020-12-21 22:30:36,719 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,736 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:36,737 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:36,738 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:47, output treesize:43 [2020-12-21 22:30:36,806 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,808 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:36,868 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:36,869 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 59 treesize of output 202 [2020-12-21 22:30:36,876 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,035 WARN L197 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-12-21 22:30:37,036 INFO L625 ElimStorePlain]: treesize reduction 81, result has 55.5 percent of original size [2020-12-21 22:30:37,038 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,039 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:68, output treesize:101 [2020-12-21 22:30:37,131 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-21 22:30:37,132 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-21 22:30:37,133 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-21 22:30:37,134 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-21 22:30:37,137 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-21 22:30:37,138 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-21 22:30:37,140 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-21 22:30:37,158 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,164 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,172 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-21 22:30:37,180 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,238 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2020-12-21 22:30:37,241 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,255 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,257 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,308 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,400 INFO L244 Elim1Store]: Index analysis took 146 ms [2020-12-21 22:30:37,504 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:37,505 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 81 treesize of output 287 [2020-12-21 22:30:37,513 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,539 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,545 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-21 22:30:37,551 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,598 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 66 [2020-12-21 22:30:37,601 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,614 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,623 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,638 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,645 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:37,757 INFO L244 Elim1Store]: Index analysis took 144 ms [2020-12-21 22:30:37,776 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 70 treesize of output 75 [2020-12-21 22:30:37,778 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,787 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-21 22:30:37,788 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,796 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-21 22:30:37,797 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,808 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-21 22:30:37,809 INFO L547 ElimStorePlain]: Start of recursive call 8: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:37,816 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-21 22:30:37,817 INFO L547 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:38,239 WARN L197 SmtUtils]: Spent 420.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 61 [2020-12-21 22:30:38,240 INFO L625 ElimStorePlain]: treesize reduction 201, result has 62.8 percent of original size [2020-12-21 22:30:38,243 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2020-12-21 22:30:38,243 INFO L244 ElimStorePlain]: Needed 9 recursive calls to eliminate 1 variables, input treesize:721, output treesize:339 [2020-12-21 22:30:38,492 WARN L197 SmtUtils]: Spent 214.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-12-21 22:30:38,503 INFO L639 QuantifierPusher]: Distributing 4 conjuncts over 2 disjuncts [2020-12-21 22:30:38,505 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-21 22:30:38,527 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,536 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,545 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,555 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,557 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,564 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,571 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,573 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,688 INFO L244 Elim1Store]: Index analysis took 168 ms [2020-12-21 22:30:38,700 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 100 [2020-12-21 22:30:38,702 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:38,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,717 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,733 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,760 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,762 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,780 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:38,944 INFO L244 Elim1Store]: Index analysis took 232 ms [2020-12-21 22:30:39,089 WARN L197 SmtUtils]: Spent 123.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-12-21 22:30:39,089 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:39,090 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 9 case distinctions, treesize of input 103 treesize of output 372 [2020-12-21 22:30:39,101 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:39,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,124 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,131 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-21 22:30:39,132 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,182 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 77 [2020-12-21 22:30:39,189 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:39,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,207 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,208 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,213 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,258 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 81 treesize of output 86 [2020-12-21 22:30:39,260 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:39,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,280 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,286 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,293 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-21 22:30:39,298 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,307 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,309 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:39,330 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 92 treesize of output 91 [2020-12-21 22:30:39,333 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:39,997 WARN L197 SmtUtils]: Spent 663.00 ms on a formula simplification. DAG size of input: 99 DAG size of output: 69 [2020-12-21 22:30:39,998 INFO L625 ElimStorePlain]: treesize reduction 255, result has 66.8 percent of original size [2020-12-21 22:30:40,002 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2020-12-21 22:30:40,003 INFO L244 ElimStorePlain]: Needed 6 recursive calls to eliminate 1 variables, input treesize:539, output treesize:514 [2020-12-21 22:30:40,335 WARN L197 SmtUtils]: Spent 274.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-12-21 22:30:40,349 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-12-21 22:30:40,351 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-21 22:30:40,354 INFO L639 QuantifierPusher]: Distributing 5 conjuncts over 3 disjuncts [2020-12-21 22:30:40,366 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-21 22:30:40,368 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-12-21 22:30:40,369 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-21 22:30:40,411 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,415 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,424 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,429 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,430 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-21 22:30:40,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,442 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,445 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,449 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,454 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,460 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,622 INFO L244 Elim1Store]: Index analysis took 214 ms [2020-12-21 22:30:40,670 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 10 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 135 [2020-12-21 22:30:40,674 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:40,697 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,700 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,704 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,716 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,731 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,736 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,736 INFO L173 IndexEqualityManager]: detected equality via solver [2020-12-21 22:30:40,822 INFO L244 Elim1Store]: Index analysis took 129 ms [2020-12-21 22:30:40,872 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 122 treesize of output 121 [2020-12-21 22:30:40,875 INFO L547 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:40,894 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,899 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,901 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,906 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,909 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,917 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,921 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,923 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:40,994 INFO L244 Elim1Store]: Index analysis took 106 ms [2020-12-21 22:30:41,027 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 10 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 132 [2020-12-21 22:30:41,033 INFO L547 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:41,054 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,055 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,058 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,068 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,071 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,073 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,076 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,079 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,081 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,084 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,086 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,088 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,093 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,095 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,178 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 15 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 0 case distinctions, treesize of input 135 treesize of output 146 [2020-12-21 22:30:41,182 INFO L547 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:41,201 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,206 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,215 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,219 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,224 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,228 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,236 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,310 INFO L244 Elim1Store]: Index analysis took 118 ms [2020-12-21 22:30:41,494 WARN L197 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-12-21 22:30:41,495 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-21 22:30:41,495 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 9 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 123 treesize of output 446 [2020-12-21 22:30:41,512 INFO L547 ElimStorePlain]: Start of recursive call 6: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:41,528 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,529 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,533 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,535 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-12-21 22:30:41,547 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 113 treesize of output 118 [2020-12-21 22:30:41,551 INFO L547 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2020-12-21 22:30:42,535 WARN L197 SmtUtils]: Spent 983.00 ms on a formula simplification. DAG size of input: 161 DAG size of output: 123 [2020-12-21 22:30:42,536 INFO L625 ElimStorePlain]: treesize reduction 345, result has 70.2 percent of original size [2020-12-21 22:30:42,541 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-21 22:30:42,544 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 6 xjuncts. [2020-12-21 22:30:42,544 INFO L244 ElimStorePlain]: Needed 7 recursive calls to eliminate 2 variables, input treesize:845, output treesize:811 [2020-12-21 22:30:42,552 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-21 22:30:42,955 WARN L197 SmtUtils]: Spent 307.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-12-21 22:30:42,974 INFO L639 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-12-21 22:30:42,978 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-21 22:30:42,982 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-12-21 22:30:43,529 WARN L197 SmtUtils]: Spent 421.00 ms on a formula simplification that was a NOOP. DAG size: 126 [2020-12-21 22:30:43,558 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-21 22:31:04,807 WARN L197 SmtUtils]: Spent 18.96 s on a formula simplification that was a NOOP. DAG size: 141 [2020-12-21 22:31:04,848 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-21 22:31:33,547 WARN L197 SmtUtils]: Spent 25.66 s on a formula simplification that was a NOOP. DAG size: 259 [2020-12-21 22:32:16,241 WARN L197 SmtUtils]: Spent 41.92 s on a formula simplification that was a NOOP. DAG size: 261 [2020-12-21 22:32:16,280 INFO L639 QuantifierPusher]: Distributing 7 conjuncts over 2 disjuncts [2020-12-21 22:32:23,967 WARN L197 SmtUtils]: Spent 6.85 s on a formula simplification. DAG size of input: 262 DAG size of output: 65 [2020-12-21 22:32:28,191 WARN L197 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 80 [2020-12-21 22:32:28,686 WARN L197 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-12-21 22:32:29,190 WARN L197 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-12-21 22:32:29,221 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-21 22:32:29,229 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-21 22:32:29,234 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-21 22:32:29,253 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-21 22:32:29,257 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-12-21 22:32:29,268 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 10 disjuncts [2020-12-21 22:32:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-12-21 22:32:29,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554862290] [2020-12-21 22:32:29,514 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-21 22:32:29,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357951597] [2020-12-21 22:32:29,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-21 22:32:29,515 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-12-21 22:32:29,515 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842966146] [2020-12-21 22:32:29,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-12-21 22:32:29,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-21 22:32:29,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-12-21 22:32:29,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=395, Unknown=0, NotChecked=0, Total=462 [2020-12-21 22:32:29,517 INFO L87 Difference]: Start difference. First operand 192 states and 248 transitions. Second operand 22 states. [2020-12-21 22:32:29,861 WARN L197 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2020-12-21 22:32:30,466 WARN L197 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 16 [2020-12-21 22:32:30,812 WARN L197 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 28 [2020-12-21 22:32:31,291 WARN L197 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-12-21 22:32:33,717 WARN L197 SmtUtils]: Spent 1.88 s on a formula simplification. DAG size of input: 85 DAG size of output: 60 [2020-12-21 22:32:36,088 WARN L197 SmtUtils]: Spent 1.62 s on a formula simplification. DAG size of input: 169 DAG size of output: 88 [2020-12-21 22:32:40,327 WARN L197 SmtUtils]: Spent 2.49 s on a formula simplification. DAG size of input: 191 DAG size of output: 92 [2020-12-21 22:32:47,756 WARN L197 SmtUtils]: Spent 6.57 s on a formula simplification. DAG size of input: 142 DAG size of output: 63 [2020-12-21 22:33:11,855 WARN L197 SmtUtils]: Spent 21.68 s on a formula simplification. DAG size of input: 329 DAG size of output: 86 [2020-12-21 22:33:13,545 WARN L197 SmtUtils]: Spent 1.03 s on a formula simplification. DAG size of input: 264 DAG size of output: 67 [2020-12-21 22:33:17,698 WARN L197 SmtUtils]: Spent 720.00 ms on a formula simplification. DAG size of input: 267 DAG size of output: 70