/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/geo3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:17:18,742 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:17:18,745 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:17:18,761 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:17:18,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:17:18,763 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:17:18,765 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:17:18,767 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:17:18,769 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:17:18,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:17:18,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:17:18,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:17:18,772 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:17:18,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:17:18,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:17:18,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:17:18,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:17:18,777 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:17:18,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:17:18,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:17:18,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:17:18,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:17:18,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:17:18,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:17:18,789 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:17:18,798 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:17:18,799 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:17:18,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:17:18,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:17:18,817 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:17:18,818 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:17:18,819 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:17:18,820 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:17:18,820 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:17:18,820 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:17:18,820 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:17:18,821 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:17:18,821 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:17:18,821 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:17:18,821 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:17:18,821 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:17:18,822 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:17:18,822 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:17:18,822 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:17:18,822 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:17:18,822 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:17:18,822 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:17:18,823 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:17:18,823 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:17:18,823 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:17:18,823 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:17:18,824 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:17:18,824 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:17:18,824 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:17:18,824 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:17:18,824 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:17:18,824 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:17:18,825 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:17:18,825 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:17:19,150 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:17:19,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:17:19,169 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:17:19,171 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:17:19,171 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:17:19,172 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-17 12:17:19,259 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c625a533e/f6505b8d5db54f6ca512441de8550398/FLAGdcefcfdcc [2020-07-17 12:17:19,816 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:17:19,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-17 12:17:19,825 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c625a533e/f6505b8d5db54f6ca512441de8550398/FLAGdcefcfdcc [2020-07-17 12:17:20,207 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c625a533e/f6505b8d5db54f6ca512441de8550398 [2020-07-17 12:17:20,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:17:20,221 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:17:20,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:17:20,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:17:20,226 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:17:20,227 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,230 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b902dac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20, skipping insertion in model container [2020-07-17 12:17:20,230 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,239 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:17:20,262 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:17:20,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:17:20,484 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:17:20,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:17:20,516 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:17:20,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20 WrapperNode [2020-07-17 12:17:20,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:17:20,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:17:20,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:17:20,519 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:17:20,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,536 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,536 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,642 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,643 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (1/1) ... [2020-07-17 12:17:20,645 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:17:20,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:17:20,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:17:20,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:17:20,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (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 [2020-07-17 12:17:20,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:17:20,710 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:17:20,710 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:17:20,710 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 12:17:20,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:17:20,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:17:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:17:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:17:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:17:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:17:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:17:20,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:17:20,712 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:17:20,908 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:17:20,909 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:17:20,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:17:20 BoogieIcfgContainer [2020-07-17 12:17:20,914 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:17:20,916 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:17:20,916 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:17:20,919 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:17:20,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:17:20" (1/3) ... [2020-07-17 12:17:20,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b1f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:17:20, skipping insertion in model container [2020-07-17 12:17:20,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:17:20" (2/3) ... [2020-07-17 12:17:20,921 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b1f72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:17:20, skipping insertion in model container [2020-07-17 12:17:20,921 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:17:20" (3/3) ... [2020-07-17 12:17:20,924 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-07-17 12:17:20,936 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:17:20,944 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:17:20,959 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:17:20,982 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:17:20,982 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:17:20,983 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:17:20,983 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:17:20,983 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:17:20,983 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:17:20,983 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:17:20,984 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:17:21,004 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-17 12:17:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:17:21,010 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:21,011 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:21,012 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:21,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:21,018 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-17 12:17:21,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:21,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828614214] [2020-07-17 12:17:21,027 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:21,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:21,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:21,160 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:17:21,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828614214] [2020-07-17 12:17:21,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:17:21,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 12:17:21,165 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917807656] [2020-07-17 12:17:21,170 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 12:17:21,171 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:17:21,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 12:17:21,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 12:17:21,189 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-17 12:17:21,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:17:21,220 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-17 12:17:21,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 12:17:21,221 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-17 12:17:21,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:17:21,234 INFO L225 Difference]: With dead ends: 35 [2020-07-17 12:17:21,234 INFO L226 Difference]: Without dead ends: 15 [2020-07-17 12:17:21,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 12:17:21,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-17 12:17:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-17 12:17:21,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-17 12:17:21,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-17 12:17:21,302 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-17 12:17:21,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:17:21,304 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-17 12:17:21,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 12:17:21,304 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-17 12:17:21,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 12:17:21,306 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:21,306 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:21,307 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:17:21,307 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:21,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:21,308 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-17 12:17:21,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:21,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [308654657] [2020-07-17 12:17:21,309 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:21,329 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:17:21,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [897243950] [2020-07-17 12:17:21,330 INFO L94 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 [2020-07-17 12:17:21,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:21,400 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-17 12:17:21,416 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:17:21,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:17:21,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [308654657] [2020-07-17 12:17:21,588 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:17:21,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [897243950] [2020-07-17 12:17:21,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:17:21,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 12:17:21,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682998884] [2020-07-17 12:17:21,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 12:17:21,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:17:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 12:17:21,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:17:21,593 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-17 12:17:21,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:17:21,683 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-17 12:17:21,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 12:17:21,684 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-17 12:17:21,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:17:21,685 INFO L225 Difference]: With dead ends: 25 [2020-07-17 12:17:21,686 INFO L226 Difference]: Without dead ends: 22 [2020-07-17 12:17:21,687 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 12:17:21,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-17 12:17:21,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-17 12:17:21,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-17 12:17:21,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-17 12:17:21,695 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-17 12:17:21,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:17:21,696 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-17 12:17:21,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 12:17:21,696 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-17 12:17:21,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 12:17:21,697 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:21,697 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:21,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:17:21,911 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:21,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:21,912 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-17 12:17:21,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:21,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796280590] [2020-07-17 12:17:21,914 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:21,924 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:17:21,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [621458375] [2020-07-17 12:17:21,925 INFO L94 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 [2020-07-17 12:17:21,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:21,961 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-17 12:17:21,965 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:17:22,075 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:17:22,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796280590] [2020-07-17 12:17:22,076 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:17:22,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [621458375] [2020-07-17 12:17:22,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:17:22,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-17 12:17:22,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743691884] [2020-07-17 12:17:22,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:17:22,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:17:22,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:17:22,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:17:22,079 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-07-17 12:17:27,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:17:27,599 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-17 12:17:27,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 12:17:27,601 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-17 12:17:27,601 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:17:27,603 INFO L225 Difference]: With dead ends: 32 [2020-07-17 12:17:27,603 INFO L226 Difference]: Without dead ends: 30 [2020-07-17 12:17:27,604 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:17:27,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-17 12:17:27,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-07-17 12:17:27,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-17 12:17:27,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-07-17 12:17:27,613 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-07-17 12:17:27,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:17:27,614 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-07-17 12:17:27,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:17:27,614 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-07-17 12:17:27,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 12:17:27,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:27,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:27,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:17:27,832 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:27,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:27,833 INFO L82 PathProgramCache]: Analyzing trace with hash 325764102, now seen corresponding path program 1 times [2020-07-17 12:17:27,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:27,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601801951] [2020-07-17 12:17:27,834 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:27,842 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:17:27,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [692680737] [2020-07-17 12:17:27,843 INFO L94 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 [2020-07-17 12:17:27,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:17:27,879 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-17 12:17:27,882 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:17:27,998 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:17:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 12:17:28,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601801951] [2020-07-17 12:17:28,061 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:17:28,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [692680737] [2020-07-17 12:17:28,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:17:28,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 12:17:28,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951046127] [2020-07-17 12:17:28,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:17:28,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:17:28,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:17:28,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:17:28,064 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-07-17 12:17:32,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:17:32,360 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-17 12:17:32,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:17:32,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-17 12:17:32,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:17:32,483 INFO L225 Difference]: With dead ends: 34 [2020-07-17 12:17:32,483 INFO L226 Difference]: Without dead ends: 27 [2020-07-17 12:17:32,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-17 12:17:32,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-17 12:17:32,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-17 12:17:32,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-17 12:17:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-17 12:17:32,493 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2020-07-17 12:17:32,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:17:32,494 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-17 12:17:32,494 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:17:32,494 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-17 12:17:32,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 12:17:32,495 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:32,496 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:32,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:17:32,703 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:32,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:32,704 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-17 12:17:32,705 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:32,705 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809011362] [2020-07-17 12:17:32,705 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:32,713 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:17:32,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [907181920] [2020-07-17 12:17:32,713 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2020-07-17 12:17:32,775 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:17:32,775 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:17:32,777 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-17 12:17:32,779 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:17:37,144 WARN L193 SmtUtils]: Spent 2.14 s on a formula simplification that was a NOOP. DAG size: 14 [2020-07-17 12:17:37,419 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 11 [2020-07-17 12:17:37,499 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-17 12:17:37,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809011362] [2020-07-17 12:17:37,500 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:17:37,501 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907181920] [2020-07-17 12:17:37,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:17:37,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-17 12:17:37,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084339550] [2020-07-17 12:17:37,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 12:17:37,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:17:37,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 12:17:37,503 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2020-07-17 12:17:37,503 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-07-17 12:17:50,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:17:50,517 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-07-17 12:17:50,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:17:50,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-17 12:17:50,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:17:50,520 INFO L225 Difference]: With dead ends: 37 [2020-07-17 12:17:50,520 INFO L226 Difference]: Without dead ends: 35 [2020-07-17 12:17:50,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2020-07-17 12:17:50,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-17 12:17:50,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-07-17 12:17:50,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-17 12:17:50,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-07-17 12:17:50,530 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 24 [2020-07-17 12:17:50,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:17:50,530 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-07-17 12:17:50,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 12:17:50,530 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-17 12:17:50,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 12:17:50,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:17:50,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:17:50,732 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:17:50,733 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:17:50,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:17:50,734 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-17 12:17:50,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:17:50,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545709013] [2020-07-17 12:17:50,735 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:17:50,743 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-17 12:17:50,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1881173692] [2020-07-17 12:17:50,744 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2020-07-17 12:17:50,795 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-17 12:17:50,795 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:17:50,797 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-17 12:17:50,799 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:17:53,472 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-07-17 12:17:53,492 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:18:17,684 WARN L193 SmtUtils]: Spent 12.78 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-17 12:18:17,692 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:18:46,985 WARN L193 SmtUtils]: Spent 14.33 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-17 12:18:49,039 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:18:57,316 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_13 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int) (v_main_~x~0_14 Int)) (and (not (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14)) (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)))) (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) v_main_~x~0_BEFORE_CALL_8) (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~x~0_14)))) is different from false [2020-07-17 12:18:59,365 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~y~0_13 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int) (v_main_~x~0_14 Int)) (and (not (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14)) (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)))) (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) v_main_~x~0_BEFORE_CALL_8) (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8) v_main_~x~0_14)))) is different from true [2020-07-17 12:18:59,373 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-17 12:18:59,373 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545709013] [2020-07-17 12:18:59,373 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-17 12:18:59,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1881173692] [2020-07-17 12:18:59,374 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:18:59,374 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-17 12:18:59,376 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068984785] [2020-07-17 12:18:59,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 12:18:59,377 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:18:59,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 12:18:59,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=38, Unknown=7, NotChecked=12, Total=72 [2020-07-17 12:18:59,380 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 9 states. [2020-07-17 12:19:06,292 WARN L193 SmtUtils]: Spent 4.11 s on a formula simplification. DAG size of input: 29 DAG size of output: 3 [2020-07-17 12:19:15,145 WARN L193 SmtUtils]: Spent 8.18 s on a formula simplification. DAG size of input: 35 DAG size of output: 6 [2020-07-17 12:21:02,425 WARN L193 SmtUtils]: Spent 1.37 m on a formula simplification. DAG size of input: 33 DAG size of output: 31 [2020-07-17 12:21:06,740 WARN L193 SmtUtils]: Spent 2.23 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-17 12:21:10,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:21:10,836 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-17 12:21:10,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 12:21:10,857 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-07-17 12:21:10,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:21:10,858 INFO L225 Difference]: With dead ends: 34 [2020-07-17 12:21:10,858 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:21:10,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 162.5s TimeCoverageRelationStatistics Valid=36, Invalid=88, Unknown=12, NotChecked=20, Total=156 [2020-07-17 12:21:10,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:21:10,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:21:10,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:21:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:21:10,860 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-17 12:21:10,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:21:10,860 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:21:10,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 12:21:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:21:10,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:21:11,061 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-17 12:21:11,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:21:14,223 WARN L193 SmtUtils]: Spent 3.07 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-07-17 12:22:07,483 WARN L193 SmtUtils]: Spent 53.25 s on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-07-17 12:22:08,524 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-07-17 12:22:08,527 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 12:22:08,527 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:22:08,527 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:22:08,528 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:22:08,528 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:22:08,528 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:22:08,528 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-07-17 12:22:08,528 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-17 12:22:08,529 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-07-17 12:22:08,529 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-07-17 12:22:08,529 INFO L264 CegarLoopResult]: At program point L31(line 31) the Hoare annotation is: (or (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (+ (* main_~z~0 v_main_~x~0_14) main_~a~0))) (and (= main_~y~0 (* main_~z~0 v_main_~y~0_13)) (= (+ (* main_~z~0 v_main_~y~0_13 main_~a~0) v_main_~x~0_14) .cse0) (= main_~x~0 .cse0)))) (and (= 1 main_~y~0) (= main_~a~0 main_~x~0))) [2020-07-17 12:22:08,529 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 39) no Hoare annotation was computed. [2020-07-17 12:22:08,529 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 19 42) the Hoare annotation is: true [2020-07-17 12:22:08,530 INFO L264 CegarLoopResult]: At program point L30-2(lines 30 39) the Hoare annotation is: (or (exists ((v_main_~y~0_13 Int) (v_main_~x~0_14 Int)) (let ((.cse0 (+ (* main_~z~0 v_main_~x~0_14) main_~a~0))) (and (= main_~y~0 (* main_~z~0 v_main_~y~0_13)) (= (+ (* main_~z~0 v_main_~y~0_13 main_~a~0) v_main_~x~0_14) .cse0) (= main_~x~0 .cse0)))) (and (= 1 main_~y~0) (= main_~a~0 main_~x~0))) [2020-07-17 12:22:08,530 INFO L264 CegarLoopResult]: At program point L30-3(lines 30 39) the Hoare annotation is: (= (+ main_~a~0 (* main_~x~0 main_~z~0)) (+ main_~x~0 (* main_~y~0 main_~z~0 main_~a~0))) [2020-07-17 12:22:08,530 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 42) no Hoare annotation was computed. [2020-07-17 12:22:08,530 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 42) no Hoare annotation was computed. [2020-07-17 12:22:08,531 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-17 12:22:08,531 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: (or (forall ((v_main_~y~0_13 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int) (v_main_~x~0_14 Int)) (or (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8))) (not (= (+ v_main_~x~0_14 (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) v_main_~x~0_BEFORE_CALL_8))))) (exists ((v_main_~y~0_13 Int) (v_main_~z~0_BEFORE_CALL_6 Int) (v_main_~x~0_BEFORE_CALL_8 Int) (v_main_~x~0_14 Int)) (and (not (= (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)))) (= (+ v_main_~x~0_14 (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_BEFORE_CALL_8)) (+ (* v_main_~y~0_13 v_main_~z~0_BEFORE_CALL_6 v_main_~z~0_BEFORE_CALL_6 v_main_~x~0_14) v_main_~x~0_BEFORE_CALL_8)))) (<= 1 |__VERIFIER_assert_#in~cond|) (not (<= 0 |__VERIFIER_assert_#in~cond|))) [2020-07-17 12:22:08,531 INFO L268 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-07-17 12:22:08,531 INFO L268 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-07-17 12:22:08,531 INFO L268 CegarLoopResult]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2020-07-17 12:22:08,532 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-07-17 12:22:08,532 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-07-17 12:22:08,542 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,543 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,544 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,551 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,552 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,555 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:22:08 BoogieIcfgContainer [2020-07-17 12:22:08,555 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:22:08,557 INFO L168 Benchmark]: Toolchain (without parser) took 288337.71 ms. Allocated memory was 136.8 MB in the beginning and 223.3 MB in the end (delta: 86.5 MB). Free memory was 97.3 MB in the beginning and 77.5 MB in the end (delta: 19.8 MB). Peak memory consumption was 106.3 MB. Max. memory is 7.1 GB. [2020-07-17 12:22:08,558 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 115.9 MB in the beginning and 115.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 12:22:08,559 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.74 ms. Allocated memory is still 136.8 MB. Free memory was 96.9 MB in the beginning and 87.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-17 12:22:08,560 INFO L168 Benchmark]: Boogie Preprocessor took 126.43 ms. Allocated memory was 136.8 MB in the beginning and 198.2 MB in the end (delta: 61.3 MB). Free memory was 87.3 MB in the beginning and 177.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-07-17 12:22:08,561 INFO L168 Benchmark]: RCFGBuilder took 266.94 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 164.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:22:08,562 INFO L168 Benchmark]: TraceAbstraction took 287639.64 ms. Allocated memory was 198.2 MB in the beginning and 223.3 MB in the end (delta: 25.2 MB). Free memory was 164.1 MB in the beginning and 77.5 MB in the end (delta: 86.5 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:22:08,566 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 136.8 MB. Free memory was 115.9 MB in the beginning and 115.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.74 ms. Allocated memory is still 136.8 MB. Free memory was 96.9 MB in the beginning and 87.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.43 ms. Allocated memory was 136.8 MB in the beginning and 198.2 MB in the end (delta: 61.3 MB). Free memory was 87.3 MB in the beginning and 177.2 MB in the end (delta: -89.8 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.94 ms. Allocated memory is still 198.2 MB. Free memory was 177.2 MB in the beginning and 164.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 287639.64 ms. Allocated memory was 198.2 MB in the beginning and 223.3 MB in the end (delta: 25.2 MB). Free memory was 164.1 MB in the beginning and 77.5 MB in the end (delta: 86.5 MB). Peak memory consumption was 111.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant [2020-07-17 12:22:08,575 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,576 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,577 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,577 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-17 12:22:08,577 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,578 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-17 12:22:08,578 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] Derived loop invariant: (\exists v_main_~y~0_13 : int, v_main_~x~0_14 : int :: (y == z * v_main_~y~0_13 && z * v_main_~y~0_13 * a + v_main_~x~0_14 == z * v_main_~x~0_14 + a) && x == z * v_main_~x~0_14 + a) || (1 == y && a == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 230.0s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 154.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 57.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 57 SDslu, 245 SDs, 0 SdLazy, 193 SolverSat, 12 SolverUnsat, 18 SolverUnknown, 0 SolverNotchecked, 40.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 167.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=5, 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, 6 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 25 NumberOfFragments, 166 HoareAnnotationTreeSize, 15 FomulaSimplifications, 252 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 42 FormulaSimplificationTreeSizeReductionInter, 57.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 73.8s InterpolantComputationTime, 115 NumberOfCodeBlocks, 101 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 109 ConstructedInterpolants, 5 QuantifiedInterpolants, 12389 SizeOfPredicates, 16 NumberOfNonLiveVariables, 285 ConjunctsInSsa, 85 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 49/63 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...