/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 0.1.25-86f66a4 [2020-07-07 11:34:33,500 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:34:33,502 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:34:33,515 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:34:33,516 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:34:33,517 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:34:33,518 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:34:33,520 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:34:33,522 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:34:33,523 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:34:33,524 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:34:33,525 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:34:33,525 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:34:33,527 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:34:33,528 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:34:33,529 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:34:33,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:34:33,531 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:34:33,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:34:33,534 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:34:33,536 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:34:33,537 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:34:33,538 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:34:33,539 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:34:33,541 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:34:33,549 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:34:33,549 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:34:33,550 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:34:33,551 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 [2020-07-07 11:34:33,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:34:33,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:34:33,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:34:33,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:34:33,568 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:34:33,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:34:33,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:34:33,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:34:33,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:34:33,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:34:33,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:34:33,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:34:33,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:34:33,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:34:33,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:34:33,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:34:33,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:34:33,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:34:33,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:34:33,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:34:33,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:34:33,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:34:33,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:34:33,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:34:33,572 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:34:33,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:34:33,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:34:33,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:34:33,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:34:33,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:34:33,862 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:34:33,877 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:34:33,881 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:34:33,882 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:34:33,883 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:34:33,884 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-07 11:34:33,965 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4532b20a7/00ffe7d997dc4fa4b04661b36d0d97b3/FLAGd613d7eea [2020-07-07 11:34:34,434 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:34:34,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/geo3.c [2020-07-07 11:34:34,445 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4532b20a7/00ffe7d997dc4fa4b04661b36d0d97b3/FLAGd613d7eea [2020-07-07 11:34:34,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4532b20a7/00ffe7d997dc4fa4b04661b36d0d97b3 [2020-07-07 11:34:34,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:34:34,826 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:34:34,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:34:34,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:34:34,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:34:34,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dfc5529 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:34, skipping insertion in model container [2020-07-07 11:34:34,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:34:34" (1/1) ... [2020-07-07 11:34:34,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:34:34,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:34:35,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:34:35,045 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:34:35,064 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:34:35,079 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:34:35,080 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35 WrapperNode [2020-07-07 11:34:35,080 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:34:35,081 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:34:35,081 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:34:35,081 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:34:35,095 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,095 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,182 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,182 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,187 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (1/1) ... [2020-07-07 11:34:35,200 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:34:35,201 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:34:35,207 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:34:35,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:34:35,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (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 [2020-07-07 11:34:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:34:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:34:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:34:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 11:34:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:34:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:34:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:34:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:34:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:34:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 11:34:35,282 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:34:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:34:35,283 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:34:35,484 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:34:35,484 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:34:35,488 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:34:35 BoogieIcfgContainer [2020-07-07 11:34:35,488 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:34:35,490 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:34:35,490 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:34:35,493 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:34:35,494 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:34:34" (1/3) ... [2020-07-07 11:34:35,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d062a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:34:35, skipping insertion in model container [2020-07-07 11:34:35,495 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:34:35" (2/3) ... [2020-07-07 11:34:35,495 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411d062a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:34:35, skipping insertion in model container [2020-07-07 11:34:35,496 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:34:35" (3/3) ... [2020-07-07 11:34:35,498 INFO L109 eAbstractionObserver]: Analyzing ICFG geo3.c [2020-07-07 11:34:35,519 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:34:35,539 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:34:35,583 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:34:35,636 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:34:35,636 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:34:35,636 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:34:35,636 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:34:35,636 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:34:35,636 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:34:35,636 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:34:35,636 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:34:35,654 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states. [2020-07-07 11:34:35,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:34:35,660 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:35,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:35,662 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:35,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:35,667 INFO L82 PathProgramCache]: Analyzing trace with hash -64610451, now seen corresponding path program 1 times [2020-07-07 11:34:35,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:35,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1800811449] [2020-07-07 11:34:35,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:35,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:35,788 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1800811449] [2020-07-07 11:34:35,789 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:34:35,789 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 11:34:35,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676320855] [2020-07-07 11:34:35,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 11:34:35,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:35,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 11:34:35,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 11:34:35,813 INFO L87 Difference]: Start difference. First operand 20 states. Second operand 2 states. [2020-07-07 11:34:35,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:35,837 INFO L93 Difference]: Finished difference Result 35 states and 45 transitions. [2020-07-07 11:34:35,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 11:34:35,839 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-07 11:34:35,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:35,849 INFO L225 Difference]: With dead ends: 35 [2020-07-07 11:34:35,849 INFO L226 Difference]: Without dead ends: 15 [2020-07-07 11:34:35,853 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 [2020-07-07 11:34:35,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-07 11:34:35,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-07 11:34:35,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-07 11:34:35,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-07-07 11:34:35,897 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2020-07-07 11:34:35,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:35,897 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-07-07 11:34:35,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 11:34:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-07-07 11:34:35,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:34:35,898 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:35,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:35,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:34:35,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:35,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:35,900 INFO L82 PathProgramCache]: Analyzing trace with hash -62822991, now seen corresponding path program 1 times [2020-07-07 11:34:35,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:35,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427721197] [2020-07-07 11:34:35,900 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:35,910 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:35,911 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2126192685] [2020-07-07 11:34:35,911 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 [2020-07-07 11:34:35,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:35,961 INFO L264 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-07 11:34:35,967 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:36,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:36,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427721197] [2020-07-07 11:34:36,088 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:36,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2126192685] [2020-07-07 11:34:36,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:34:36,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:34:36,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475038911] [2020-07-07 11:34:36,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:34:36,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:36,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:34:36,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:34:36,093 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 5 states. [2020-07-07 11:34:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:36,188 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-07-07 11:34:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:34:36,189 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-07 11:34:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:36,191 INFO L225 Difference]: With dead ends: 25 [2020-07-07 11:34:36,191 INFO L226 Difference]: Without dead ends: 22 [2020-07-07 11:34:36,193 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 [2020-07-07 11:34:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-07 11:34:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-07-07 11:34:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 11:34:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-07-07 11:34:36,201 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 10 [2020-07-07 11:34:36,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:36,201 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-07-07 11:34:36,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:34:36,202 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-07-07 11:34:36,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:34:36,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:36,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:36,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-07 11:34:36,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:36,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:36,406 INFO L82 PathProgramCache]: Analyzing trace with hash 50868238, now seen corresponding path program 1 times [2020-07-07 11:34:36,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:36,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586444832] [2020-07-07 11:34:36,408 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:36,417 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:36,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1012446278] [2020-07-07 11:34:36,418 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 [2020-07-07 11:34:36,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:36,458 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-07 11:34:36,460 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:36,568 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:34:36,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586444832] [2020-07-07 11:34:36,569 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:36,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1012446278] [2020-07-07 11:34:36,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:36,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-07 11:34:36,570 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680194178] [2020-07-07 11:34:36,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:34:36,571 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:36,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:34:36,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:34:36,571 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 8 states. [2020-07-07 11:34:43,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:43,120 INFO L93 Difference]: Finished difference Result 32 states and 34 transitions. [2020-07-07 11:34:43,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 11:34:43,121 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 17 [2020-07-07 11:34:43,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:43,123 INFO L225 Difference]: With dead ends: 32 [2020-07-07 11:34:43,123 INFO L226 Difference]: Without dead ends: 30 [2020-07-07 11:34:43,124 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 [2020-07-07 11:34:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-07 11:34:43,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-07-07 11:34:43,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-07 11:34:43,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-07-07 11:34:43,132 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 17 [2020-07-07 11:34:43,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:43,133 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-07-07 11:34:43,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:34:43,133 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-07-07 11:34:43,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 11:34:43,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:43,135 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:43,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:43,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:43,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:43,351 INFO L82 PathProgramCache]: Analyzing trace with hash 325764102, now seen corresponding path program 1 times [2020-07-07 11:34:43,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:43,352 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561168602] [2020-07-07 11:34:43,353 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:43,360 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:43,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1322226414] [2020-07-07 11:34:43,363 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 [2020-07-07 11:34:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:34:43,395 INFO L264 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-07 11:34:43,398 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:43,459 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:34:43,539 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-07 11:34:43,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561168602] [2020-07-07 11:34:43,539 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:43,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1322226414] [2020-07-07 11:34:43,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:43,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-07 11:34:43,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458055372] [2020-07-07 11:34:43,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 11:34:43,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:43,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 11:34:43,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:34:43,545 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 7 states. [2020-07-07 11:34:45,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:34:45,766 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-07 11:34:45,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:34:45,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-07-07 11:34:45,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:34:45,772 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:34:45,772 INFO L226 Difference]: Without dead ends: 27 [2020-07-07 11:34:45,773 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 [2020-07-07 11:34:45,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-07 11:34:45,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-07 11:34:45,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:34:45,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-07 11:34:45,780 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 23 [2020-07-07 11:34:45,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:34:45,780 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-07 11:34:45,780 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 11:34:45,780 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-07 11:34:45,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 11:34:45,781 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:34:45,781 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:34:45,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:34:45,989 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:34:45,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:34:45,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1538749201, now seen corresponding path program 2 times [2020-07-07 11:34:45,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:34:45,992 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520436234] [2020-07-07 11:34:45,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:34:45,999 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:34:46,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [356192617] [2020-07-07 11:34:46,000 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 [2020-07-07 11:34:46,073 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-07 11:34:46,073 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:34:46,075 INFO L264 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-07 11:34:46,077 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:34:50,323 WARN L193 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 14 [2020-07-07 11:34:50,439 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-07 11:34:50,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520436234] [2020-07-07 11:34:50,440 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:34:50,440 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356192617] [2020-07-07 11:34:50,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:34:50,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-07 11:34:50,441 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211701497] [2020-07-07 11:34:50,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 11:34:50,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:34:50,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 11:34:50,442 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=70, Unknown=1, NotChecked=0, Total=90 [2020-07-07 11:34:50,442 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-07-07 11:35:03,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:35:03,028 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-07-07 11:35:03,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:35:03,029 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-07-07 11:35:03,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:35:03,031 INFO L225 Difference]: With dead ends: 37 [2020-07-07 11:35:03,031 INFO L226 Difference]: Without dead ends: 35 [2020-07-07 11:35:03,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=30, Invalid=101, Unknown=1, NotChecked=0, Total=132 [2020-07-07 11:35:03,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-07 11:35:03,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2020-07-07 11:35:03,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-07 11:35:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2020-07-07 11:35:03,039 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 24 [2020-07-07 11:35:03,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:35:03,040 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2020-07-07 11:35:03,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 11:35:03,040 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2020-07-07 11:35:03,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 11:35:03,041 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:35:03,041 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:35:03,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:35:03,244 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:35:03,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:35:03,245 INFO L82 PathProgramCache]: Analyzing trace with hash -695576914, now seen corresponding path program 3 times [2020-07-07 11:35:03,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:35:03,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138188793] [2020-07-07 11:35:03,247 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:35:03,253 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-07 11:35:03,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1055455718] [2020-07-07 11:35:03,254 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 [2020-07-07 11:35:03,293 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-07 11:35:03,293 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-07 11:35:03,295 INFO L264 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-07 11:35:03,297 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:35:05,603 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:24,800 WARN L193 SmtUtils]: Spent 10.93 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-07 11:35:24,804 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:35:52,075 WARN L193 SmtUtils]: Spent 13.72 s on a formula simplification that was a NOOP. DAG size: 26 [2020-07-07 11:35:54,143 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 11:36:02,439 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 [2020-07-07 11:36:04,480 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 [2020-07-07 11:36:04,489 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-07 11:36:04,489 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138188793] [2020-07-07 11:36:04,489 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-07 11:36:04,490 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1055455718] [2020-07-07 11:36:04,490 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-07 11:36:04,490 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-07 11:36:04,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789994645] [2020-07-07 11:36:04,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 11:36:04,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:36:04,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 11:36:04,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=4, NotChecked=12, Total=72 [2020-07-07 11:36:04,493 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand 9 states. [2020-07-07 11:36:10,859 WARN L193 SmtUtils]: Spent 4.09 s on a formula simplification. DAG size of input: 29 DAG size of output: 3 [2020-07-07 11:36:19,898 WARN L193 SmtUtils]: Spent 8.21 s on a formula simplification. DAG size of input: 35 DAG size of output: 6 [2020-07-07 11:38:08,852 WARN L193 SmtUtils]: Spent 1.43 m on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-07-07 11:38:18,147 WARN L193 SmtUtils]: Spent 5.57 s on a formula simplification that was a NOOP. DAG size: 22 [2020-07-07 11:38:22,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:38:22,209 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-07-07 11:38:22,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 11:38:22,236 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-07-07 11:38:22,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:38:22,237 INFO L225 Difference]: With dead ends: 34 [2020-07-07 11:38:22,237 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:38:22,238 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 164.2s TimeCoverageRelationStatistics Valid=36, Invalid=90, Unknown=10, NotChecked=20, Total=156 [2020-07-07 11:38:22,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:38:22,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:38:22,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:38:22,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:38:22,239 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-07 11:38:22,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:38:22,239 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:38:22,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 11:38:22,239 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:38:22,239 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:38:22,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-07 11:38:22,443 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:38:22,753 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 9 [2020-07-07 11:38:23,404 WARN L193 SmtUtils]: Spent 646.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-07-07 11:38:33,635 WARN L193 SmtUtils]: Spent 10.23 s on a formula simplification. DAG size of input: 33 DAG size of output: 1 [2020-07-07 11:38:36,860 WARN L193 SmtUtils]: Spent 3.22 s on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-07-07 11:38:36,863 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:38:36,863 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:38:36,863 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:38:36,863 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:38:36,864 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:38:36,864 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:38:36,864 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 9 11) no Hoare annotation was computed. [2020-07-07 11:38:36,864 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-07-07 11:38:36,864 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 11) no Hoare annotation was computed. [2020-07-07 11:38:36,865 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 9 11) no Hoare annotation was computed. [2020-07-07 11:38:36,865 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))) [2020-07-07 11:38:36,865 INFO L268 CegarLoopResult]: For program point L31-1(lines 30 39) no Hoare annotation was computed. [2020-07-07 11:38:36,865 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 19 42) the Hoare annotation is: true [2020-07-07 11:38:36,866 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))) [2020-07-07 11:38:36,867 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))) [2020-07-07 11:38:36,867 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 42) no Hoare annotation was computed. [2020-07-07 11:38:36,867 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 42) no Hoare annotation was computed. [2020-07-07 11:38:36,867 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-07 11:38:36,867 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 12 18) the Hoare annotation is: true [2020-07-07 11:38:36,867 INFO L268 CegarLoopResult]: For program point L14(lines 14 15) no Hoare annotation was computed. [2020-07-07 11:38:36,867 INFO L268 CegarLoopResult]: For program point L13(lines 13 16) no Hoare annotation was computed. [2020-07-07 11:38:36,867 INFO L268 CegarLoopResult]: For program point L13-2(lines 12 18) no Hoare annotation was computed. [2020-07-07 11:38:36,868 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 12 18) no Hoare annotation was computed. [2020-07-07 11:38:36,868 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-07-07 11:38:36,877 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,878 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,878 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,879 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,879 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,886 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,886 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,887 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,887 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,887 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,893 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:38:36 BoogieIcfgContainer [2020-07-07 11:38:36,893 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:38:36,895 INFO L168 Benchmark]: Toolchain (without parser) took 242069.37 ms. Allocated memory was 136.3 MB in the beginning and 228.6 MB in the end (delta: 92.3 MB). Free memory was 100.6 MB in the beginning and 79.1 MB in the end (delta: 21.6 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:36,897 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 11:38:36,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.67 ms. Allocated memory is still 136.3 MB. Free memory was 100.4 MB in the beginning and 90.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:36,900 INFO L168 Benchmark]: Boogie Preprocessor took 119.87 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 90.8 MB in the beginning and 178.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:36,906 INFO L168 Benchmark]: RCFGBuilder took 287.64 ms. Allocated memory is still 199.8 MB. Free memory was 177.8 MB in the beginning and 165.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:36,908 INFO L168 Benchmark]: TraceAbstraction took 241403.69 ms. Allocated memory was 199.8 MB in the beginning and 228.6 MB in the end (delta: 28.8 MB). Free memory was 165.2 MB in the beginning and 80.5 MB in the end (delta: 84.7 MB). Peak memory consumption was 113.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:38:36,918 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 136.3 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.67 ms. Allocated memory is still 136.3 MB. Free memory was 100.4 MB in the beginning and 90.8 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.87 ms. Allocated memory was 136.3 MB in the beginning and 199.8 MB in the end (delta: 63.4 MB). Free memory was 90.8 MB in the beginning and 178.5 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 287.64 ms. Allocated memory is still 199.8 MB. Free memory was 177.8 MB in the beginning and 165.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 241403.69 ms. Allocated memory was 199.8 MB in the beginning and 228.6 MB in the end (delta: 28.8 MB). Free memory was 165.2 MB in the beginning and 80.5 MB in the end (delta: 84.7 MB). Peak memory consumption was 113.6 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 [2020-07-07 11:38:36,933 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,935 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,935 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,936 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,936 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~y~0_13,QUANTIFIED] [2020-07-07 11:38:36,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,937 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_main_~x~0_14,QUANTIFIED] [2020-07-07 11:38:36,937 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: 226.8s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 159.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 14.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 81 SDtfs, 57 SDslu, 245 SDs, 0 SdLazy, 197 SolverSat, 12 SolverUnsat, 15 SolverUnknown, 0 SolverNotchecked, 36.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 115 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 168.9s 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, 85 HoareAnnotationTreeSize, 15 FomulaSimplifications, 252 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 123 FormulaSimplificationTreeSizeReductionInter, 14.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 65.9s 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...