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/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:17:19,703 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:17:19,706 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:17:19,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:17:19,721 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:17:19,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:17:19,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:17:19,734 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:17:19,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:17:19,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:17:19,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:17:19,740 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:17:19,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:17:19,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:17:19,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:17:19,746 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:17:19,747 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:17:19,748 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:17:19,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:17:19,755 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:17:19,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:17:19,760 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:17:19,762 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:17:19,763 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:17:19,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:17:19,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:17:19,766 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:17:19,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:17:19,769 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:17:19,771 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:17:19,771 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:17:19,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:17:19,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:17:19,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:17:19,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:17:19,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:17:19,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:17:19,779 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:17:19,779 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:17:19,780 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:17:19,781 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:17:19,782 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 [2019-10-14 23:17:19,804 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:17:19,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:17:19,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:17:19,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:17:19,806 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:17:19,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:17:19,807 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:17:19,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:17:19,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:17:19,807 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:17:19,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:17:19,807 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:17:19,808 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:17:19,808 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:17:19,808 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:17:19,808 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:17:19,808 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:17:19,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:17:19,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:17:19,809 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:17:19,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:17:19,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:17:19,810 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:17:19,810 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:17:19,810 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:17:19,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:17:19,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:17:19,811 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:17:19,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:17:20,095 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:17:20,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:17:20,119 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:17:20,122 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:17:20,122 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:17:20,123 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c [2019-10-14 23:17:20,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94610e014/1dea0fa5b65e4ddab85363b717a6abb5/FLAGa7c13ee79 [2019-10-14 23:17:20,623 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:17:20,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c [2019-10-14 23:17:20,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94610e014/1dea0fa5b65e4ddab85363b717a6abb5/FLAGa7c13ee79 [2019-10-14 23:17:21,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/94610e014/1dea0fa5b65e4ddab85363b717a6abb5 [2019-10-14 23:17:21,019 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:17:21,022 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:17:21,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:21,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:17:21,026 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:17:21,027 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54268d74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21, skipping insertion in model container [2019-10-14 23:17:21,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,038 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:17:21,056 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:17:21,253 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:21,257 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:17:21,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:17:21,285 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:17:21,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21 WrapperNode [2019-10-14 23:17:21,286 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:17:21,286 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:17:21,286 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:17:21,286 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:17:21,376 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,382 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,392 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,393 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (1/1) ... [2019-10-14 23:17:21,395 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:17:21,395 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:17:21,395 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:17:21,396 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:17:21,396 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (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 [2019-10-14 23:17:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:17:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:17:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:17:21,459 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:17:21,459 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:17:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-14 23:17:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:17:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:17:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:17:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:17:21,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:17:21,657 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:17:21,658 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-14 23:17:21,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:21 BoogieIcfgContainer [2019-10-14 23:17:21,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:17:21,660 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:17:21,660 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:17:21,663 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:17:21,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:17:21" (1/3) ... [2019-10-14 23:17:21,664 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d7f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:21, skipping insertion in model container [2019-10-14 23:17:21,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:17:21" (2/3) ... [2019-10-14 23:17:21,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59d7f271 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:17:21, skipping insertion in model container [2019-10-14 23:17:21,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:17:21" (3/3) ... [2019-10-14 23:17:21,666 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm1.c [2019-10-14 23:17:21,676 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:17:21,683 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:17:21,695 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:17:21,718 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:17:21,718 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:17:21,719 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:17:21,719 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:17:21,719 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:17:21,719 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:17:21,719 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:17:21,720 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:17:21,737 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-10-14 23:17:21,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:21,742 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:21,743 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:21,745 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:21,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:21,750 INFO L82 PathProgramCache]: Analyzing trace with hash -831554694, now seen corresponding path program 1 times [2019-10-14 23:17:21,759 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:21,760 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302659984] [2019-10-14 23:17:21,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:21,760 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:21,760 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:21,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:21,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:21,873 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302659984] [2019-10-14 23:17:21,874 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:21,874 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:17:21,874 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632994442] [2019-10-14 23:17:21,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:17:21,878 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:21,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:17:21,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:17:21,891 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-10-14 23:17:21,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:21,916 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2019-10-14 23:17:21,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:17:21,917 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:17:21,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:21,926 INFO L225 Difference]: With dead ends: 49 [2019-10-14 23:17:21,926 INFO L226 Difference]: Without dead ends: 22 [2019-10-14 23:17:21,930 INFO L600 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 [2019-10-14 23:17:21,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-14 23:17:21,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-10-14 23:17:21,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-10-14 23:17:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2019-10-14 23:17:21,970 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2019-10-14 23:17:21,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:21,971 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-10-14 23:17:21,971 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:17:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2019-10-14 23:17:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:17:21,972 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:21,972 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:21,972 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:21,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:21,973 INFO L82 PathProgramCache]: Analyzing trace with hash -871444843, now seen corresponding path program 1 times [2019-10-14 23:17:21,973 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:21,973 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729696041] [2019-10-14 23:17:21,973 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:21,974 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:21,974 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:21,984 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:21,984 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1439070297] [2019-10-14 23:17:21,985 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 [2019-10-14 23:17:22,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:22,029 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-14 23:17:22,035 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:22,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:22,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729696041] [2019-10-14 23:17:22,186 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:22,186 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439070297] [2019-10-14 23:17:22,187 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:22,187 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:17:22,187 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328332111] [2019-10-14 23:17:22,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:17:22,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:22,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:17:22,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:17:22,191 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 5 states. [2019-10-14 23:17:22,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:22,357 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2019-10-14 23:17:22,357 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:17:22,358 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-14 23:17:22,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:22,359 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:17:22,359 INFO L226 Difference]: Without dead ends: 37 [2019-10-14 23:17:22,360 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:22,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-14 23:17:22,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-10-14 23:17:22,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-14 23:17:22,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2019-10-14 23:17:22,375 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 10 [2019-10-14 23:17:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:22,375 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-10-14 23:17:22,375 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:17:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2019-10-14 23:17:22,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-14 23:17:22,377 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:22,377 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:22,581 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:22,582 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:22,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:22,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1387131099, now seen corresponding path program 1 times [2019-10-14 23:17:22,583 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:22,584 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471843115] [2019-10-14 23:17:22,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:22,584 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:22,585 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:22,606 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:22,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1725887070] [2019-10-14 23:17:22,608 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 [2019-10-14 23:17:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:22,642 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-14 23:17:22,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:22,714 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:17:22,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471843115] [2019-10-14 23:17:22,715 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:22,715 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725887070] [2019-10-14 23:17:22,716 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:22,716 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:17:22,716 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946403680] [2019-10-14 23:17:22,716 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:17:22,717 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:22,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:17:22,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:22,717 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 6 states. [2019-10-14 23:17:22,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:22,881 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2019-10-14 23:17:22,882 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:17:22,882 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-10-14 23:17:22,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:22,884 INFO L225 Difference]: With dead ends: 56 [2019-10-14 23:17:22,884 INFO L226 Difference]: Without dead ends: 48 [2019-10-14 23:17:22,885 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:22,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2019-10-14 23:17:22,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2019-10-14 23:17:22,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-14 23:17:22,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 63 transitions. [2019-10-14 23:17:22,899 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 63 transitions. Word has length 16 [2019-10-14 23:17:22,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:22,899 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 63 transitions. [2019-10-14 23:17:22,899 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:17:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 63 transitions. [2019-10-14 23:17:22,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-10-14 23:17:22,901 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:22,901 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:23,106 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:23,107 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:23,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:23,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1615934296, now seen corresponding path program 1 times [2019-10-14 23:17:23,107 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:23,108 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1674873442] [2019-10-14 23:17:23,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:23,108 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:23,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:23,119 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:23,119 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1949101500] [2019-10-14 23:17:23,119 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 [2019-10-14 23:17:23,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:23,149 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-14 23:17:23,152 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:23,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:23,249 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-14 23:17:23,250 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1674873442] [2019-10-14 23:17:23,251 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:23,251 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1949101500] [2019-10-14 23:17:23,252 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:23,252 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-10-14 23:17:23,252 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851423483] [2019-10-14 23:17:23,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:17:23,253 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:23,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:17:23,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:23,254 INFO L87 Difference]: Start difference. First operand 48 states and 63 transitions. Second operand 6 states. [2019-10-14 23:17:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:23,435 INFO L93 Difference]: Finished difference Result 65 states and 86 transitions. [2019-10-14 23:17:23,436 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:17:23,436 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2019-10-14 23:17:23,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:23,437 INFO L225 Difference]: With dead ends: 65 [2019-10-14 23:17:23,437 INFO L226 Difference]: Without dead ends: 63 [2019-10-14 23:17:23,438 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:17:23,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2019-10-14 23:17:23,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 61. [2019-10-14 23:17:23,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-10-14 23:17:23,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 81 transitions. [2019-10-14 23:17:23,450 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 81 transitions. Word has length 24 [2019-10-14 23:17:23,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:23,451 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 81 transitions. [2019-10-14 23:17:23,451 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:17:23,451 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 81 transitions. [2019-10-14 23:17:23,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:17:23,452 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:23,452 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:23,655 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:23,656 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:23,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:23,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1283188595, now seen corresponding path program 2 times [2019-10-14 23:17:23,657 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:23,658 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654099274] [2019-10-14 23:17:23,658 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:23,659 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:23,659 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:23,668 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:23,669 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1494266682] [2019-10-14 23:17:23,669 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 [2019-10-14 23:17:23,721 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:17:23,721 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:17:23,722 INFO L256 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:17:23,726 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:23,805 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:23,829 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2019-10-14 23:17:23,829 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654099274] [2019-10-14 23:17:23,829 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:23,830 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1494266682] [2019-10-14 23:17:23,830 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:23,830 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-14 23:17:23,830 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345598862] [2019-10-14 23:17:23,831 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:17:23,831 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:23,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:17:23,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:17:23,832 INFO L87 Difference]: Start difference. First operand 61 states and 81 transitions. Second operand 7 states. [2019-10-14 23:17:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:24,053 INFO L93 Difference]: Finished difference Result 80 states and 107 transitions. [2019-10-14 23:17:24,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:17:24,053 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2019-10-14 23:17:24,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:24,055 INFO L225 Difference]: With dead ends: 80 [2019-10-14 23:17:24,055 INFO L226 Difference]: Without dead ends: 78 [2019-10-14 23:17:24,055 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:24,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-10-14 23:17:24,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 74. [2019-10-14 23:17:24,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-14 23:17:24,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2019-10-14 23:17:24,069 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 31 [2019-10-14 23:17:24,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:24,069 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2019-10-14 23:17:24,070 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:17:24,070 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2019-10-14 23:17:24,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:17:24,071 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:24,071 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:24,279 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:24,280 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:24,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:24,280 INFO L82 PathProgramCache]: Analyzing trace with hash -1535457417, now seen corresponding path program 1 times [2019-10-14 23:17:24,280 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:24,281 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284898898] [2019-10-14 23:17:24,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:24,281 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:24,281 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:24,293 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:24,293 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1748939171] [2019-10-14 23:17:24,293 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:24,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:24,331 INFO L256 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:17:24,333 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:24,382 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:24,409 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2019-10-14 23:17:24,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284898898] [2019-10-14 23:17:24,410 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:24,410 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748939171] [2019-10-14 23:17:24,411 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:24,411 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-10-14 23:17:24,411 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928284801] [2019-10-14 23:17:24,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:17:24,412 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:24,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:17:24,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:17:24,414 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand 7 states. [2019-10-14 23:17:24,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:24,625 INFO L93 Difference]: Finished difference Result 93 states and 125 transitions. [2019-10-14 23:17:24,625 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:17:24,625 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-14 23:17:24,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:24,628 INFO L225 Difference]: With dead ends: 93 [2019-10-14 23:17:24,629 INFO L226 Difference]: Without dead ends: 91 [2019-10-14 23:17:24,630 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:24,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2019-10-14 23:17:24,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 74. [2019-10-14 23:17:24,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-10-14 23:17:24,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 99 transitions. [2019-10-14 23:17:24,643 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 99 transitions. Word has length 38 [2019-10-14 23:17:24,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:24,644 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 99 transitions. [2019-10-14 23:17:24,644 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:17:24,644 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 99 transitions. [2019-10-14 23:17:24,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-14 23:17:24,646 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:24,646 INFO L380 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:24,849 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:24,850 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:24,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1294737992, now seen corresponding path program 3 times [2019-10-14 23:17:24,851 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:24,851 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084183082] [2019-10-14 23:17:24,852 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:24,852 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:24,852 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:24,861 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:24,861 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786948808] [2019-10-14 23:17:24,861 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 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:24,923 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-10-14 23:17:24,924 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:17:24,925 INFO L256 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 26 conjunts are in the unsatisfiable core [2019-10-14 23:17:24,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:24,986 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:25,004 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2019-10-14 23:17:25,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084183082] [2019-10-14 23:17:25,004 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:25,004 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786948808] [2019-10-14 23:17:25,005 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:25,005 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-14 23:17:25,005 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823646544] [2019-10-14 23:17:25,005 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:17:25,006 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:25,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:17:25,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:25,006 INFO L87 Difference]: Start difference. First operand 74 states and 99 transitions. Second operand 8 states. [2019-10-14 23:17:25,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:25,142 INFO L93 Difference]: Finished difference Result 104 states and 140 transitions. [2019-10-14 23:17:25,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:17:25,142 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2019-10-14 23:17:25,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:25,144 INFO L225 Difference]: With dead ends: 104 [2019-10-14 23:17:25,144 INFO L226 Difference]: Without dead ends: 102 [2019-10-14 23:17:25,145 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:17:25,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2019-10-14 23:17:25,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 87. [2019-10-14 23:17:25,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2019-10-14 23:17:25,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 117 transitions. [2019-10-14 23:17:25,159 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 117 transitions. Word has length 38 [2019-10-14 23:17:25,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:25,160 INFO L462 AbstractCegarLoop]: Abstraction has 87 states and 117 transitions. [2019-10-14 23:17:25,160 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:17:25,160 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 117 transitions. [2019-10-14 23:17:25,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:17:25,162 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:25,162 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:25,365 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:25,366 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:25,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1467183567, now seen corresponding path program 1 times [2019-10-14 23:17:25,367 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:25,367 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102383209] [2019-10-14 23:17:25,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:25,368 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:25,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:25,375 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:25,375 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1480510468] [2019-10-14 23:17:25,375 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:25,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:25,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 21 conjunts are in the unsatisfiable core [2019-10-14 23:17:25,409 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:25,487 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:25,514 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2019-10-14 23:17:25,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102383209] [2019-10-14 23:17:25,515 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:25,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480510468] [2019-10-14 23:17:25,515 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:25,515 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2019-10-14 23:17:25,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498022786] [2019-10-14 23:17:25,517 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:17:25,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:25,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:17:25,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:17:25,518 INFO L87 Difference]: Start difference. First operand 87 states and 117 transitions. Second operand 8 states. [2019-10-14 23:17:25,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:25,734 INFO L93 Difference]: Finished difference Result 142 states and 193 transitions. [2019-10-14 23:17:25,735 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:17:25,735 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2019-10-14 23:17:25,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:25,736 INFO L225 Difference]: With dead ends: 142 [2019-10-14 23:17:25,737 INFO L226 Difference]: Without dead ends: 100 [2019-10-14 23:17:25,740 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:17:25,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2019-10-14 23:17:25,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2019-10-14 23:17:25,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2019-10-14 23:17:25,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 133 transitions. [2019-10-14 23:17:25,769 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 133 transitions. Word has length 44 [2019-10-14 23:17:25,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:25,770 INFO L462 AbstractCegarLoop]: Abstraction has 100 states and 133 transitions. [2019-10-14 23:17:25,770 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:17:25,771 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 133 transitions. [2019-10-14 23:17:25,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2019-10-14 23:17:25,776 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:25,776 INFO L380 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:25,981 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:25,982 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:25,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:25,982 INFO L82 PathProgramCache]: Analyzing trace with hash -1996165331, now seen corresponding path program 1 times [2019-10-14 23:17:25,982 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:25,982 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17729278] [2019-10-14 23:17:25,982 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:25,983 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:25,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:25,988 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:25,989 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1475387409] [2019-10-14 23:17:25,989 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:26,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:26,024 INFO L256 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-14 23:17:26,027 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:26,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:26,656 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2019-10-14 23:17:26,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17729278] [2019-10-14 23:17:26,657 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:26,657 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475387409] [2019-10-14 23:17:26,657 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-10-14 23:17:26,657 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2019-10-14 23:17:26,657 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373095740] [2019-10-14 23:17:26,658 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:17:26,658 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:26,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:17:26,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:17:26,659 INFO L87 Difference]: Start difference. First operand 100 states and 133 transitions. Second operand 10 states. [2019-10-14 23:17:34,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:34,023 INFO L93 Difference]: Finished difference Result 217 states and 308 transitions. [2019-10-14 23:17:34,024 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:17:34,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 44 [2019-10-14 23:17:34,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:34,028 INFO L225 Difference]: With dead ends: 217 [2019-10-14 23:17:34,028 INFO L226 Difference]: Without dead ends: 159 [2019-10-14 23:17:34,030 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2019-10-14 23:17:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2019-10-14 23:17:34,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 141. [2019-10-14 23:17:34,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2019-10-14 23:17:34,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 192 transitions. [2019-10-14 23:17:34,079 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 192 transitions. Word has length 44 [2019-10-14 23:17:34,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:34,081 INFO L462 AbstractCegarLoop]: Abstraction has 141 states and 192 transitions. [2019-10-14 23:17:34,082 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:17:34,082 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 192 transitions. [2019-10-14 23:17:34,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-10-14 23:17:34,090 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:17:34,090 INFO L380 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:17:34,291 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:34,291 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:17:34,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:17:34,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1303301358, now seen corresponding path program 1 times [2019-10-14 23:17:34,292 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:17:34,292 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058244717] [2019-10-14 23:17:34,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:34,292 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:17:34,292 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:17:34,298 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-14 23:17:34,298 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [698524274] [2019-10-14 23:17:34,298 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:34,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:17:34,327 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 23:17:34,329 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:17:34,351 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:17:34,365 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-10-14 23:17:34,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058244717] [2019-10-14 23:17:34,366 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-14 23:17:34,366 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [698524274] [2019-10-14 23:17:34,366 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:17:34,366 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-14 23:17:34,367 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971736574] [2019-10-14 23:17:34,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-14 23:17:34,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:17:34,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-14 23:17:34,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:17:34,368 INFO L87 Difference]: Start difference. First operand 141 states and 192 transitions. Second operand 6 states. [2019-10-14 23:17:34,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:17:34,434 INFO L93 Difference]: Finished difference Result 245 states and 335 transitions. [2019-10-14 23:17:34,434 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-14 23:17:34,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 49 [2019-10-14 23:17:34,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:17:34,435 INFO L225 Difference]: With dead ends: 245 [2019-10-14 23:17:34,435 INFO L226 Difference]: Without dead ends: 0 [2019-10-14 23:17:34,439 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:17:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-14 23:17:34,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-14 23:17:34,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-14 23:17:34,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-14 23:17:34,443 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 49 [2019-10-14 23:17:34,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:17:34,443 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-14 23:17:34,443 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-14 23:17:34,444 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-14 23:17:34,444 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-14 23:17:34,644 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:17:34,649 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-14 23:17:34,951 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-14 23:17:34,952 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:34,952 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-14 23:17:34,952 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-14 23:17:34,952 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-14 23:17:34,952 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-14 23:17:34,952 INFO L439 ceAbstractionStarter]: At program point L35-2(lines 35 41) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-10-14 23:17:34,952 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-10-14 23:17:34,952 INFO L443 ceAbstractionStarter]: For program point L31-1(lines 30 50) no Hoare annotation was computed. [2019-10-14 23:17:34,952 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 58) no Hoare annotation was computed. [2019-10-14 23:17:34,953 INFO L439 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: (and (<= 1 main_~a~0) (<= main_~y~0 main_~x~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0))) (<= main_~x~0 main_~y~0)) [2019-10-14 23:17:34,953 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-10-14 23:17:34,953 INFO L443 ceAbstractionStarter]: For program point L44-1(lines 43 49) no Hoare annotation was computed. [2019-10-14 23:17:34,953 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-10-14 23:17:34,953 INFO L443 ceAbstractionStarter]: For program point L36-1(lines 35 41) no Hoare annotation was computed. [2019-10-14 23:17:34,953 INFO L443 ceAbstractionStarter]: For program point L53(line 53) no Hoare annotation was computed. [2019-10-14 23:17:34,953 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 58) no Hoare annotation was computed. [2019-10-14 23:17:34,953 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 58) the Hoare annotation is: true [2019-10-14 23:17:34,953 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 50) the Hoare annotation is: (and (<= 1 main_~a~0) (<= main_~y~0 main_~x~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0))) (<= main_~x~0 main_~y~0)) [2019-10-14 23:17:34,953 INFO L443 ceAbstractionStarter]: For program point L43-1(lines 30 50) no Hoare annotation was computed. [2019-10-14 23:17:34,954 INFO L439 ceAbstractionStarter]: At program point L43-2(lines 30 50) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-10-14 23:17:34,954 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-10-14 23:17:34,954 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-10-14 23:17:34,954 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-10-14 23:17:34,954 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-10-14 23:17:34,954 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-10-14 23:17:34,954 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-10-14 23:17:34,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:17:34 BoogieIcfgContainer [2019-10-14 23:17:34,967 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:17:34,969 INFO L168 Benchmark]: Toolchain (without parser) took 13946.58 ms. Allocated memory was 137.4 MB in the beginning and 249.0 MB in the end (delta: 111.7 MB). Free memory was 100.7 MB in the beginning and 140.4 MB in the end (delta: -39.7 MB). Peak memory consumption was 72.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:34,970 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 137.4 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. [2019-10-14 23:17:34,971 INFO L168 Benchmark]: CACSL2BoogieTranslator took 263.17 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:34,972 INFO L168 Benchmark]: Boogie Preprocessor took 108.80 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:34,973 INFO L168 Benchmark]: RCFGBuilder took 263.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 166.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:34,974 INFO L168 Benchmark]: TraceAbstraction took 13306.99 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 166.6 MB in the beginning and 140.4 MB in the end (delta: 26.1 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. [2019-10-14 23:17:34,977 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 137.4 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 263.17 ms. Allocated memory is still 137.4 MB. Free memory was 100.3 MB in the beginning and 90.7 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.80 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 90.7 MB in the beginning and 179.6 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.91 ms. Allocated memory is still 201.3 MB. Free memory was 179.6 MB in the beginning and 166.6 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 13306.99 ms. Allocated memory was 201.3 MB in the beginning and 249.0 MB in the end (delta: 47.7 MB). Free memory was 166.6 MB in the beginning and 140.4 MB in the end (delta: 26.1 MB). Peak memory consumption was 73.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 35]: Loop Invariant Derived loop invariant: 1 <= a && a * b == y * v + x * u - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 <= a && a * b == y * v + x * u - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Result: SAFE, OverallTime: 13.2s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 275 SDtfs, 148 SDslu, 879 SDs, 0 SdLazy, 897 SolverSat, 88 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 8.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 10 MinimizatonAttempts, 58 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 106 PreInvPairs, 161 NumberOfFragments, 122 HoareAnnotationTreeSize, 106 FomulaSimplifications, 2506 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 240 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 304 NumberOfCodeBlocks, 290 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 294 ConstructedInterpolants, 4 QuantifiedInterpolants, 57542 SizeOfPredicates, 23 NumberOfNonLiveVariables, 688 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 10 InterpolantComputations, 4 PerfectInterpolantSequences, 283/311 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...