/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound5.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-4f750a8 [2020-12-22 05:22:40,724 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-22 05:22:40,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-22 05:22:40,784 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-12-22 05:22:40,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-22 05:22:40,828 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-22 05:22:40,830 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-22 05:22:40,832 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-22 05:22:40,833 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-22 05:22:40,837 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-22 05:22:40,842 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-22 05:22:40,846 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-22 05:22:40,848 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-22 05:22:40,849 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-22 05:22:40,850 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-22 05:22:40,854 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-22 05:22:40,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-22 05:22:40,882 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-22 05:22:40,907 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-22 05:22:40,907 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-22 05:22:40,909 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-22 05:22:40,909 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-22 05:22:40,909 INFO L138 SettingsManager]: * Use SBE=true [2020-12-22 05:22:40,909 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-22 05:22:40,910 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-22 05:22:40,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-22 05:22:40,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-22 05:22:40,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-22 05:22:40,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-22 05:22:40,911 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-22 05:22:40,911 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-22 05:22:40,911 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-22 05:22:40,911 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-22 05:22:40,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-22 05:22:40,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-22 05:22:40,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:22:40,912 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-22 05:22:40,912 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-22 05:22:40,912 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-22 05:22:40,913 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-22 05:22:40,913 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-22 05:22:40,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-22 05:22:40,913 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-22 05:22:40,913 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-22 05:22:41,271 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-22 05:22:41,304 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-22 05:22:41,307 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-22 05:22:41,309 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-22 05:22:41,309 INFO L275 PluginConnector]: CDTParser initialized [2020-12-22 05:22:41,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound5.c [2020-12-22 05:22:41,391 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28a48a635/0d04779b5e7a4e9399174f9783282bf2/FLAG48bdaf822 [2020-12-22 05:22:41,937 INFO L306 CDTParser]: Found 1 translation units. [2020-12-22 05:22:41,938 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound5.c [2020-12-22 05:22:41,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28a48a635/0d04779b5e7a4e9399174f9783282bf2/FLAG48bdaf822 [2020-12-22 05:22:42,315 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/28a48a635/0d04779b5e7a4e9399174f9783282bf2 [2020-12-22 05:22:42,318 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-22 05:22:42,320 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-22 05:22:42,322 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-22 05:22:42,322 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-22 05:22:42,326 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-22 05:22:42,327 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,328 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b01c334 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42, skipping insertion in model container [2020-12-22 05:22:42,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,336 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-22 05:22:42,351 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-22 05:22:42,498 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound5.c[525,538] [2020-12-22 05:22:42,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:22:42,521 INFO L203 MainTranslator]: Completed pre-run [2020-12-22 05:22:42,533 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_valuebound5.c[525,538] [2020-12-22 05:22:42,539 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-22 05:22:42,553 INFO L208 MainTranslator]: Completed translation [2020-12-22 05:22:42,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42 WrapperNode [2020-12-22 05:22:42,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-22 05:22:42,555 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-22 05:22:42,555 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-22 05:22:42,555 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-22 05:22:42,564 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,571 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,593 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-22 05:22:42,594 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-22 05:22:42,594 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-22 05:22:42,594 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-22 05:22:42,603 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,603 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... [2020-12-22 05:22:42,617 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-22 05:22:42,618 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-22 05:22:42,618 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-22 05:22:42,618 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-22 05:22:42,619 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-22 05:22:42,730 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-22 05:22:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-22 05:22:42,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-22 05:22:42,731 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-22 05:22:43,137 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-22 05:22:43,137 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-22 05:22:43,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:22:43 BoogieIcfgContainer [2020-12-22 05:22:43,139 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-22 05:22:43,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-22 05:22:43,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-22 05:22:43,144 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-22 05:22:43,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 05:22:42" (1/3) ... [2020-12-22 05:22:43,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463cdba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:22:43, skipping insertion in model container [2020-12-22 05:22:43,146 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 05:22:42" (2/3) ... [2020-12-22 05:22:43,146 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@463cdba1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 05:22:43, skipping insertion in model container [2020-12-22 05:22:43,147 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:22:43" (3/3) ... [2020-12-22 05:22:43,149 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_valuebound5.c [2020-12-22 05:22:43,155 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-22 05:22:43,160 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-22 05:22:43,183 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-22 05:22:43,211 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-22 05:22:43,211 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-22 05:22:43,211 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-22 05:22:43,212 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-22 05:22:43,212 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-22 05:22:43,212 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-22 05:22:43,212 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-22 05:22:43,212 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-22 05:22:43,228 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-12-22 05:22:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:22:43,234 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:22:43,235 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:22:43,235 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:22:43,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:22:43,242 INFO L82 PathProgramCache]: Analyzing trace with hash -594062832, now seen corresponding path program 1 times [2020-12-22 05:22:43,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:22:43,252 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838694486] [2020-12-22 05:22:43,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:22:43,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:22:43,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:22:43,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838694486] [2020-12-22 05:22:43,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:22:43,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-22 05:22:43,440 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110868360] [2020-12-22 05:22:43,445 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-22 05:22:43,445 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:22:43,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-22 05:22:43,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:22:43,464 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-12-22 05:22:43,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:22:43,481 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2020-12-22 05:22:43,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-22 05:22:43,483 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 9 [2020-12-22 05:22:43,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:22:43,492 INFO L225 Difference]: With dead ends: 35 [2020-12-22 05:22:43,492 INFO L226 Difference]: Without dead ends: 15 [2020-12-22 05:22:43,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-22 05:22:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-12-22 05:22:43,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-12-22 05:22:43,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-12-22 05:22:43,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-12-22 05:22:43,531 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 9 [2020-12-22 05:22:43,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:22:43,532 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-12-22 05:22:43,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-22 05:22:43,532 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-12-22 05:22:43,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-22 05:22:43,533 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:22:43,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:22:43,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-22 05:22:43,534 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:22:43,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:22:43,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1182791572, now seen corresponding path program 1 times [2020-12-22 05:22:43,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:22:43,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374200733] [2020-12-22 05:22:43,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:22:43,556 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:22:43,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2083032589] [2020-12-22 05:22:43,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:43,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:22:43,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-22 05:22:43,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:22:43,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:22:43,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374200733] [2020-12-22 05:22:43,884 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:22:43,885 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083032589] [2020-12-22 05:22:43,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-22 05:22:43,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-22 05:22:43,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169337398] [2020-12-22 05:22:43,887 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-22 05:22:43,887 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:22:43,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-22 05:22:43,888 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-12-22 05:22:43,888 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 6 states. [2020-12-22 05:22:43,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:22:43,995 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-12-22 05:22:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-22 05:22:43,996 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 9 [2020-12-22 05:22:43,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:22:43,996 INFO L225 Difference]: With dead ends: 25 [2020-12-22 05:22:43,997 INFO L226 Difference]: Without dead ends: 19 [2020-12-22 05:22:43,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:22:43,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-22 05:22:44,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-12-22 05:22:44,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-22 05:22:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 18 transitions. [2020-12-22 05:22:44,003 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 18 transitions. Word has length 9 [2020-12-22 05:22:44,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:22:44,003 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 18 transitions. [2020-12-22 05:22:44,004 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-22 05:22:44,004 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 18 transitions. [2020-12-22 05:22:44,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-22 05:22:44,004 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:22:44,005 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:22:44,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-12-22 05:22:44,220 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:22:44,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:22:44,222 INFO L82 PathProgramCache]: Analyzing trace with hash 636965506, now seen corresponding path program 1 times [2020-12-22 05:22:44,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:22:44,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [421284072] [2020-12-22 05:22:44,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:22:44,238 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:22:44,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1179988419] [2020-12-22 05:22:44,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-22 05:22:44,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-22 05:22:44,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:22:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:22:44,425 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [421284072] [2020-12-22 05:22:44,426 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:22:44,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1179988419] [2020-12-22 05:22:44,426 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:22:44,426 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-12-22 05:22:44,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849619945] [2020-12-22 05:22:44,427 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-22 05:22:44,427 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:22:44,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-22 05:22:44,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-22 05:22:44,429 INFO L87 Difference]: Start difference. First operand 18 states and 18 transitions. Second operand 7 states. [2020-12-22 05:22:44,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:22:44,591 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-12-22 05:22:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:22:44,591 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-12-22 05:22:44,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:22:44,592 INFO L225 Difference]: With dead ends: 28 [2020-12-22 05:22:44,593 INFO L226 Difference]: Without dead ends: 22 [2020-12-22 05:22:44,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-12-22 05:22:44,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-22 05:22:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-12-22 05:22:44,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-12-22 05:22:44,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-12-22 05:22:44,599 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 12 [2020-12-22 05:22:44,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:22:44,600 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-12-22 05:22:44,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-22 05:22:44,600 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-12-22 05:22:44,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-22 05:22:44,601 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:22:44,601 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:22:44,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:44,815 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:22:44,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:22:44,816 INFO L82 PathProgramCache]: Analyzing trace with hash 678815956, now seen corresponding path program 2 times [2020-12-22 05:22:44,817 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:22:44,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [995135337] [2020-12-22 05:22:44,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:22:44,834 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:22:44,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1719467785] [2020-12-22 05:22:44,835 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:44,901 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-12-22 05:22:44,901 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:22:44,903 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 37 conjunts are in the unsatisfiable core [2020-12-22 05:22:44,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:22:49,227 WARN L197 SmtUtils]: Spent 4.13 s on a formula simplification. DAG size of input: 24 DAG size of output: 14 [2020-12-22 05:22:49,309 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-22 05:22:49,310 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [995135337] [2020-12-22 05:22:49,310 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:22:49,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1719467785] [2020-12-22 05:22:49,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:22:49,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-12-22 05:22:49,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303539370] [2020-12-22 05:22:49,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-22 05:22:49,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:22:49,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-22 05:22:49,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-12-22 05:22:49,316 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 10 states. [2020-12-22 05:22:49,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:22:49,656 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-12-22 05:22:49,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-22 05:22:49,657 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 15 [2020-12-22 05:22:49,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:22:49,658 INFO L225 Difference]: With dead ends: 31 [2020-12-22 05:22:49,658 INFO L226 Difference]: Without dead ends: 25 [2020-12-22 05:22:49,659 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2020-12-22 05:22:49,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-12-22 05:22:49,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-12-22 05:22:49,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-12-22 05:22:49,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-12-22 05:22:49,668 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 15 [2020-12-22 05:22:49,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:22:49,668 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-12-22 05:22:49,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-22 05:22:49,669 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-12-22 05:22:49,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-22 05:22:49,669 INFO L414 BasicCegarLoop]: Found error trace [2020-12-22 05:22:49,669 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-22 05:22:49,887 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:49,888 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-22 05:22:49,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-22 05:22:49,889 INFO L82 PathProgramCache]: Analyzing trace with hash 1905056066, now seen corresponding path program 3 times [2020-12-22 05:22:49,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-22 05:22:49,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542745353] [2020-12-22 05:22:49,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-22 05:22:49,906 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-22 05:22:49,907 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [215429142] [2020-12-22 05:22:49,907 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 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:22:50,201 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-12-22 05:22:50,201 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-22 05:22:50,203 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 30 conjunts are in the unsatisfiable core [2020-12-22 05:22:50,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-22 05:22:51,011 WARN L197 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 21 [2020-12-22 05:22:51,441 WARN L197 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 30 [2020-12-22 05:22:51,467 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-22 05:22:51,474 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:22:51,483 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:22:51,490 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-12-22 05:22:51,514 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:22:51,522 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-22 05:22:51,528 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-22 05:22:51,534 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-12-22 05:22:51,727 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-22 05:22:51,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542745353] [2020-12-22 05:22:51,727 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-22 05:22:51,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [215429142] [2020-12-22 05:22:51,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-12-22 05:22:51,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-12-22 05:22:51,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027285981] [2020-12-22 05:22:51,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-12-22 05:22:51,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-22 05:22:51,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-12-22 05:22:51,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-12-22 05:22:51,730 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 9 states. [2020-12-22 05:22:55,155 WARN L197 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 35 DAG size of output: 23 [2020-12-22 05:23:02,415 WARN L197 SmtUtils]: Spent 6.19 s on a formula simplification. DAG size of input: 47 DAG size of output: 27 [2020-12-22 05:23:04,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-22 05:23:04,075 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-12-22 05:23:04,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-22 05:23:04,075 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-12-22 05:23:04,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-22 05:23:04,076 INFO L225 Difference]: With dead ends: 24 [2020-12-22 05:23:04,076 INFO L226 Difference]: Without dead ends: 0 [2020-12-22 05:23:04,077 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-12-22 05:23:04,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-22 05:23:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-22 05:23:04,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-22 05:23:04,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-22 05:23:04,079 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 18 [2020-12-22 05:23:04,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-22 05:23:04,079 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-22 05:23:04,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-12-22 05:23:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-22 05:23:04,079 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-22 05:23:04,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-22 05:23:04,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-22 05:23:07,120 WARN L197 SmtUtils]: Spent 2.76 s on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-12-22 05:23:20,197 WARN L197 SmtUtils]: Spent 13.08 s on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-12-22 05:23:20,202 INFO L185 CegarLoopUtils]: At program point L35-2(lines 35 44) the Hoare annotation is: (let ((.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse2 (<= ULTIMATE.start_main_~z~0 5))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) .cse2) (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse2 (= ULTIMATE.start_main_~y~0 1)))) [2020-12-22 05:23:20,203 INFO L189 CegarLoopUtils]: For program point L35-3(lines 35 44) no Hoare annotation was computed. [2020-12-22 05:23:20,203 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:23:20,203 INFO L189 CegarLoopUtils]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:23:20,204 INFO L185 CegarLoopUtils]: At program point L15-2(lines 38 39) the Hoare annotation is: (let ((.cse0 (<= 0 ULTIMATE.start_main_~z~0)) (.cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse2 (<= ULTIMATE.start_main_~z~0 5))) (or (and .cse0 (= ULTIMATE.start_main_~x~0 1) .cse1 .cse2 (= ULTIMATE.start_main_~y~0 1)) (and .cse0 .cse1 (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~z~0 1))) (and .cse0 (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) .cse1 (= (mod (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)) .cse2))) [2020-12-22 05:23:20,204 INFO L189 CegarLoopUtils]: For program point L15-3(lines 15 18) no Hoare annotation was computed. [2020-12-22 05:23:20,204 INFO L189 CegarLoopUtils]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-12-22 05:23:20,204 INFO L189 CegarLoopUtils]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-12-22 05:23:20,204 INFO L192 CegarLoopUtils]: At program point L15-5(lines 14 20) the Hoare annotation is: true [2020-12-22 05:23:20,204 INFO L189 CegarLoopUtils]: For program point L-1(line -1) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point L12(line 12) no Hoare annotation was computed. [2020-12-22 05:23:20,205 INFO L189 CegarLoopUtils]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-12-22 05:23:20,206 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-22 05:23:20,206 INFO L192 CegarLoopUtils]: At program point L46(lines 23 47) the Hoare annotation is: true [2020-12-22 05:23:20,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.12 05:23:20 BoogieIcfgContainer [2020-12-22 05:23:20,244 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-22 05:23:20,245 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-22 05:23:20,245 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-22 05:23:20,245 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-22 05:23:20,246 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 05:22:43" (3/4) ... [2020-12-22 05:23:20,249 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-22 05:23:20,262 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2020-12-22 05:23:20,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-12-22 05:23:20,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:23:20,263 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-22 05:23:20,349 INFO L141 WitnessManager]: Wrote witness to /storage/repos/svcomp/c/nla-digbench-scaling/geo2-ll_valuebound5.c-witness.graphml [2020-12-22 05:23:20,349 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-22 05:23:20,350 INFO L168 Benchmark]: Toolchain (without parser) took 38030.27 ms. Allocated memory was 158.3 MB in the beginning and 208.7 MB in the end (delta: 50.3 MB). Free memory was 134.6 MB in the beginning and 115.7 MB in the end (delta: 19.0 MB). Peak memory consumption was 70.3 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,352 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 158.3 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-12-22 05:23:20,352 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.52 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 124.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,353 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.03 ms. Allocated memory is still 158.3 MB. Free memory was 124.7 MB in the beginning and 123.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,355 INFO L168 Benchmark]: Boogie Preprocessor took 23.27 ms. Allocated memory is still 158.3 MB. Free memory was 123.2 MB in the beginning and 122.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,358 INFO L168 Benchmark]: RCFGBuilder took 521.57 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 109.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,359 INFO L168 Benchmark]: TraceAbstraction took 37103.63 ms. Allocated memory was 158.3 MB in the beginning and 208.7 MB in the end (delta: 50.3 MB). Free memory was 109.0 MB in the beginning and 118.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,360 INFO L168 Benchmark]: Witness Printer took 104.28 ms. Allocated memory is still 208.7 MB. Free memory was 118.3 MB in the beginning and 115.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-12-22 05:23:20,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 158.3 MB. Free memory is still 129.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 232.52 ms. Allocated memory is still 158.3 MB. Free memory was 134.3 MB in the beginning and 124.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Procedure Inliner took 38.03 ms. Allocated memory is still 158.3 MB. Free memory was 124.7 MB in the beginning and 123.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 23.27 ms. Allocated memory is still 158.3 MB. Free memory was 123.2 MB in the beginning and 122.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 521.57 ms. Allocated memory is still 158.3 MB. Free memory was 122.0 MB in the beginning and 109.4 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 37103.63 ms. Allocated memory was 158.3 MB in the beginning and 208.7 MB in the end (delta: 50.3 MB). Free memory was 109.0 MB in the beginning and 118.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 43.0 MB. Max. memory is 8.0 GB. * Witness Printer took 104.28 ms. Allocated memory is still 208.7 MB. Free memory was 118.3 MB in the beginning and 115.7 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((0 <= z && 1 == cond) && z == y) && z <= 5) && x == z + 1) || ((((((0 <= z && y % z == 0) && 1 == cond) && y / z % z == 0) && !(z == 0)) && z * y + x == z * x + 1) && z <= 5)) || (((0 <= z && x == 1) && z <= 5) && y == 1) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((0 <= z && x == 1) && 1 == cond) && z <= 5) && y == 1) || ((((0 <= z && 1 == cond) && z == y) && z <= 5) && x == z + 1)) || ((((((0 <= z && y % z == 0) && 1 == cond) && y / z % z == 0) && !(z == 0)) && z * y + x == z * x + 1) && z <= 5) - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 21.0s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 13.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 15.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 71 SDslu, 111 SDs, 0 SdLazy, 165 SolverSat, 49 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 14.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 3 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 14 NumberOfFragments, 143 HoareAnnotationTreeSize, 4 FomulaSimplifications, 198 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 191 FormulaSimplificationTreeSizeReductionInter, 15.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.2s InterpolantComputationTime, 63 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 58 ConstructedInterpolants, 0 QuantifiedInterpolants, 8782 SizeOfPredicates, 35 NumberOfNonLiveVariables, 308 ConjunctsInSsa, 103 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 11/24 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...