/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/sqrt1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:18:31,117 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:18:31,119 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:18:31,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:18:31,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:18:31,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:18:31,134 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:18:31,136 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:18:31,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:18:31,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:18:31,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:18:31,141 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:18:31,141 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:18:31,142 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:18:31,143 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:18:31,144 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:18:31,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:18:31,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:18:31,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:18:31,150 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:18:31,151 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:18:31,152 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:18:31,153 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:18:31,154 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:18:31,156 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 22:18:31,166 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 [2019-11-23 22:18:31,180 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:18:31,181 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:18:31,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:18:31,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:18:31,182 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:18:31,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:18:31,183 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:18:31,183 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:18:31,183 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:18:31,183 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:18:31,184 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:18:31,184 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:18:31,184 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:18:31,184 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:18:31,184 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:18:31,185 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:18:31,185 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:18:31,185 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:18:31,185 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:18:31,185 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:18:31,186 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:18:31,186 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:18:31,186 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:18:31,186 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:18:31,187 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:18:31,187 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:18:31,187 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:18:31,187 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:18:31,187 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:18:31,187 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:18:31,466 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:18:31,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:18:31,485 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:18:31,486 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:18:31,487 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:18:31,488 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-11-23 22:18:31,552 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3427fe874/3346dfe5796e47e8b39a250bbe3bae18/FLAG847a6dfc1 [2019-11-23 22:18:31,998 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:18:31,999 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/sqrt1.c [2019-11-23 22:18:32,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3427fe874/3346dfe5796e47e8b39a250bbe3bae18/FLAG847a6dfc1 [2019-11-23 22:18:32,388 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3427fe874/3346dfe5796e47e8b39a250bbe3bae18 [2019-11-23 22:18:32,397 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:18:32,399 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:18:32,400 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:18:32,400 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:18:32,404 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:18:32,405 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,408 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5362047b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32, skipping insertion in model container [2019-11-23 22:18:32,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,417 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:18:32,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:18:32,647 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:18:32,651 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:18:32,670 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:18:32,681 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:18:32,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32 WrapperNode [2019-11-23 22:18:32,681 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:18:32,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:18:32,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:18:32,682 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:18:32,689 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,695 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,792 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:18:32,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:18:32,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:18:32,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:18:32,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,806 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,811 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,812 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (1/1) ... [2019-11-23 22:18:32,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:18:32,814 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:18:32,814 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:18:32,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:18:32,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (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 [2019-11-23 22:18:32,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:18:32,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:18:33,117 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:18:33,118 INFO L284 CfgBuilder]: Removed 17 assume(true) statements. [2019-11-23 22:18:33,120 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:18:33 BoogieIcfgContainer [2019-11-23 22:18:33,120 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:18:33,121 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:18:33,121 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:18:33,125 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:18:33,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:18:32" (1/3) ... [2019-11-23 22:18:33,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1af6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:18:33, skipping insertion in model container [2019-11-23 22:18:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:18:32" (2/3) ... [2019-11-23 22:18:33,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1af6d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:18:33, skipping insertion in model container [2019-11-23 22:18:33,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:18:33" (3/3) ... [2019-11-23 22:18:33,129 INFO L109 eAbstractionObserver]: Analyzing ICFG sqrt1.c [2019-11-23 22:18:33,141 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:18:33,149 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2019-11-23 22:18:33,184 INFO L249 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2019-11-23 22:18:33,212 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:18:33,213 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:18:33,213 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:18:33,213 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:18:33,213 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:18:33,213 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:18:33,213 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:18:33,214 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:18:33,229 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-23 22:18:33,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 22:18:33,233 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:33,234 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 22:18:33,234 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:33,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:33,239 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-23 22:18:33,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:33,246 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272096467] [2019-11-23 22:18:33,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:18:33,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:33,471 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272096467] [2019-11-23 22:18:33,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:18:33,472 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:18:33,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559443105] [2019-11-23 22:18:33,480 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:18:33,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:33,494 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:18:33,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:18:33,498 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-23 22:18:33,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:33,600 INFO L93 Difference]: Finished difference Result 56 states and 74 transitions. [2019-11-23 22:18:33,600 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:18:33,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-23 22:18:33,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:33,612 INFO L225 Difference]: With dead ends: 56 [2019-11-23 22:18:33,612 INFO L226 Difference]: Without dead ends: 23 [2019-11-23 22:18:33,615 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:18:33,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-23 22:18:33,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2019-11-23 22:18:33,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:18:33,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-23 22:18:33,651 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 4 [2019-11-23 22:18:33,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:33,651 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-23 22:18:33,651 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:18:33,652 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-23 22:18:33,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:18:33,652 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:33,652 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:18:33,653 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:33,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:33,654 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-23 22:18:33,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:33,655 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320850861] [2019-11-23 22:18:33,655 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:33,664 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:33,665 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956278196] [2019-11-23 22:18:33,665 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 [2019-11-23 22:18:33,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:18:33,699 WARN L253 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-23 22:18:33,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:33,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:33,808 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320850861] [2019-11-23 22:18:33,808 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:33,809 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956278196] [2019-11-23 22:18:33,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:18:33,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-23 22:18:33,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422189209] [2019-11-23 22:18:33,811 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:33,812 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:33,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:33,812 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:33,813 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-23 22:18:33,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:33,961 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2019-11-23 22:18:33,962 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:18:33,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-23 22:18:33,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:33,964 INFO L225 Difference]: With dead ends: 44 [2019-11-23 22:18:33,964 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 22:18:33,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:18:33,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 22:18:33,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2019-11-23 22:18:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-11-23 22:18:33,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2019-11-23 22:18:33,986 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 6 [2019-11-23 22:18:33,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:33,986 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2019-11-23 22:18:33,986 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:33,986 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2019-11-23 22:18:33,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 22:18:33,987 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:33,987 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 22:18:34,193 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:34,194 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:34,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:34,195 INFO L82 PathProgramCache]: Analyzing trace with hash -65748776, now seen corresponding path program 1 times [2019-11-23 22:18:34,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:34,196 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560862836] [2019-11-23 22:18:34,196 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:34,203 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:34,204 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [260389843] [2019-11-23 22:18:34,204 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 [2019-11-23 22:18:34,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:18:34,246 WARN L253 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:18:34,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:34,325 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1560862836] [2019-11-23 22:18:34,325 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:34,326 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [260389843] [2019-11-23 22:18:34,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:34,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:18:34,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881334302] [2019-11-23 22:18:34,327 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:34,327 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:34,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:34,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:34,328 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2019-11-23 22:18:34,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:34,444 INFO L93 Difference]: Finished difference Result 50 states and 50 transitions. [2019-11-23 22:18:34,445 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:18:34,445 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2019-11-23 22:18:34,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:34,446 INFO L225 Difference]: With dead ends: 50 [2019-11-23 22:18:34,446 INFO L226 Difference]: Without dead ends: 46 [2019-11-23 22:18:34,447 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:18:34,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-11-23 22:18:34,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2019-11-23 22:18:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-23 22:18:34,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2019-11-23 22:18:34,456 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 13 [2019-11-23 22:18:34,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:34,457 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2019-11-23 22:18:34,457 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:34,457 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2019-11-23 22:18:34,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2019-11-23 22:18:34,458 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:34,458 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2019-11-23 22:18:34,666 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:34,666 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:34,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:34,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1240091547, now seen corresponding path program 1 times [2019-11-23 22:18:34,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:34,668 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318924334] [2019-11-23 22:18:34,669 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:34,675 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:34,676 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1476406452] [2019-11-23 22:18:34,676 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 [2019-11-23 22:18:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:18:34,705 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-23 22:18:34,706 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:34,771 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:34,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318924334] [2019-11-23 22:18:34,772 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:34,772 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1476406452] [2019-11-23 22:18:34,772 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:34,772 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2019-11-23 22:18:34,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089270567] [2019-11-23 22:18:34,773 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:18:34,773 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:34,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:18:34,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:18:34,774 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 7 states. [2019-11-23 22:18:34,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:34,891 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2019-11-23 22:18:34,891 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:18:34,891 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2019-11-23 22:18:34,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:34,893 INFO L225 Difference]: With dead ends: 47 [2019-11-23 22:18:34,893 INFO L226 Difference]: Without dead ends: 37 [2019-11-23 22:18:34,894 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:18:34,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-23 22:18:34,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-11-23 22:18:34,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-11-23 22:18:34,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2019-11-23 22:18:34,903 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 15 [2019-11-23 22:18:34,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:34,903 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2019-11-23 22:18:34,904 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:18:34,904 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2019-11-23 22:18:34,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-11-23 22:18:34,904 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:34,905 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1] [2019-11-23 22:18:35,113 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:35,114 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:35,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:35,115 INFO L82 PathProgramCache]: Analyzing trace with hash 1987102543, now seen corresponding path program 2 times [2019-11-23 22:18:35,116 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:35,116 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636883790] [2019-11-23 22:18:35,117 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:35,123 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:35,124 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [487695462] [2019-11-23 22:18:35,124 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 [2019-11-23 22:18:35,159 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:18:35,159 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:35,161 INFO L255 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-23 22:18:35,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:35,259 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:35,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636883790] [2019-11-23 22:18:35,260 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:35,260 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487695462] [2019-11-23 22:18:35,260 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:35,260 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:18:35,261 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268680723] [2019-11-23 22:18:35,261 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:18:35,261 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:35,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:18:35,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:18:35,262 INFO L87 Difference]: Start difference. First operand 36 states and 36 transitions. Second operand 8 states. [2019-11-23 22:18:35,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:35,479 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2019-11-23 22:18:35,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:18:35,480 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2019-11-23 22:18:35,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:35,481 INFO L225 Difference]: With dead ends: 58 [2019-11-23 22:18:35,481 INFO L226 Difference]: Without dead ends: 44 [2019-11-23 22:18:35,482 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:18:35,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-23 22:18:35,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-11-23 22:18:35,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-11-23 22:18:35,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 43 transitions. [2019-11-23 22:18:35,490 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 43 transitions. Word has length 20 [2019-11-23 22:18:35,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:35,490 INFO L462 AbstractCegarLoop]: Abstraction has 43 states and 43 transitions. [2019-11-23 22:18:35,490 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:18:35,490 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 43 transitions. [2019-11-23 22:18:35,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-11-23 22:18:35,491 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:35,491 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1] [2019-11-23 22:18:35,702 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:35,703 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:35,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:35,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1833819384, now seen corresponding path program 3 times [2019-11-23 22:18:35,703 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:35,704 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183707809] [2019-11-23 22:18:35,704 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:35,715 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:35,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1584110833] [2019-11-23 22:18:35,716 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 [2019-11-23 22:18:35,750 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:18:35,750 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:35,752 WARN L253 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 33 conjunts are in the unsatisfiable core [2019-11-23 22:18:35,754 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:35,778 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:35,864 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:39,234 WARN L192 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 29 [2019-11-23 22:18:39,236 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:39,286 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 19 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-11-23 22:18:39,287 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183707809] [2019-11-23 22:18:39,287 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:39,288 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584110833] [2019-11-23 22:18:39,288 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:39,288 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2019-11-23 22:18:39,289 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962892808] [2019-11-23 22:18:39,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-23 22:18:39,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:39,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-23 22:18:39,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:18:39,290 INFO L87 Difference]: Start difference. First operand 43 states and 43 transitions. Second operand 9 states. [2019-11-23 22:18:39,954 WARN L192 SmtUtils]: Spent 627.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 11 [2019-11-23 22:18:45,059 WARN L192 SmtUtils]: Spent 5.09 s on a formula simplification. DAG size of input: 51 DAG size of output: 14 [2019-11-23 22:18:45,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:45,151 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2019-11-23 22:18:45,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:18:45,152 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2019-11-23 22:18:45,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:45,152 INFO L225 Difference]: With dead ends: 43 [2019-11-23 22:18:45,152 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:18:45,153 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 9.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2019-11-23 22:18:45,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:18:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:18:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:18:45,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:18:45,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2019-11-23 22:18:45,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:45,154 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:18:45,155 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-11-23 22:18:45,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:18:45,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:18:45,355 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:45,362 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:18:45,737 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:45,737 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:45,737 INFO L440 ceAbstractionStarter]: At program point L23-2(lines 23 35) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) (or (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1)) (and (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~s~0 (let ((.cse2 (+ ULTIMATE.start_main_~a~0 1))) (* .cse2 .cse2))) .cse1))) [2019-11-23 22:18:45,738 INFO L444 ceAbstractionStarter]: For program point L23-3(lines 23 35) no Hoare annotation was computed. [2019-11-23 22:18:45,738 INFO L444 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:45,738 INFO L440 ceAbstractionStarter]: At program point L7-2(lines 6 12) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) [2019-11-23 22:18:45,738 INFO L444 ceAbstractionStarter]: For program point L7-3(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:45,738 INFO L440 ceAbstractionStarter]: At program point L7-5(lines 6 12) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) [2019-11-23 22:18:45,738 INFO L444 ceAbstractionStarter]: For program point L7-6(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:45,739 INFO L440 ceAbstractionStarter]: At program point L7-8(lines 29 30) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (<= ULTIMATE.start_main_~t~0 .cse0) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))))) [2019-11-23 22:18:45,739 INFO L444 ceAbstractionStarter]: For program point L7-9(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:45,739 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:45,739 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:18:45,739 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:18:45,739 INFO L440 ceAbstractionStarter]: At program point L7-11(lines 6 12) the Hoare annotation is: (or (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (= ULTIMATE.start_main_~s~0 4) (<= .cse0 ULTIMATE.start_main_~t~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~t~0 .cse0) (= ULTIMATE.start_main_~t~0 3))) (let ((.cse1 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0))) (and (= ULTIMATE.start_main_~s~0 (+ (* ULTIMATE.start_main_~a~0 2) .cse1 1)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 .cse1))))) [2019-11-23 22:18:45,740 INFO L444 ceAbstractionStarter]: For program point L7-12(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:45,741 INFO L440 ceAbstractionStarter]: At program point L7-14(lines 6 12) the Hoare annotation is: (let ((.cse2 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (let ((.cse0 (<= .cse2 ULTIMATE.start_main_~t~0)) (.cse1 (<= ULTIMATE.start_main_~t~0 .cse2))) (or (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~a~0)))) (and .cse0 (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse1 (= ULTIMATE.start_main_~s~0 (+ ULTIMATE.start_main_~t~0 1)) (= ULTIMATE.start_main_~t~0 3))))) [2019-11-23 22:18:45,741 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:45,742 INFO L444 ceAbstractionStarter]: For program point L7-15(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:45,742 INFO L440 ceAbstractionStarter]: At program point L7-17(lines 6 12) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~t~0 .cse0))) [2019-11-23 22:18:45,742 INFO L440 ceAbstractionStarter]: At program point L41(lines 15 42) the Hoare annotation is: (let ((.cse0 (+ (* 2 ULTIMATE.start_main_~a~0) 1))) (and (<= .cse0 ULTIMATE.start_main_~t~0) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (<= ULTIMATE.start_main_~t~0 .cse0))) [2019-11-23 22:18:45,742 INFO L444 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:45,742 INFO L444 ceAbstractionStarter]: For program point L8-1(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:45,742 INFO L444 ceAbstractionStarter]: For program point L8-2(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:45,742 INFO L444 ceAbstractionStarter]: For program point L8-3(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:45,743 INFO L444 ceAbstractionStarter]: For program point L8-4(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:45,743 INFO L444 ceAbstractionStarter]: For program point L8-5(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:45,743 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:18:45,743 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:45,743 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:45,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:18:45 BoogieIcfgContainer [2019-11-23 22:18:45,788 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:18:45,790 INFO L168 Benchmark]: Toolchain (without parser) took 13390.83 ms. Allocated memory was 145.2 MB in the beginning and 245.4 MB in the end (delta: 100.1 MB). Free memory was 103.3 MB in the beginning and 170.3 MB in the end (delta: -66.9 MB). Peak memory consumption was 33.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,791 INFO L168 Benchmark]: CDTParser took 0.71 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,791 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.95 ms. Allocated memory is still 145.2 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,792 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.13 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 93.4 MB in the beginning and 180.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,793 INFO L168 Benchmark]: Boogie Preprocessor took 21.64 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 178.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,794 INFO L168 Benchmark]: RCFGBuilder took 305.69 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 165.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,795 INFO L168 Benchmark]: TraceAbstraction took 12666.70 ms. Allocated memory was 201.3 MB in the beginning and 245.4 MB in the end (delta: 44.0 MB). Free memory was 164.8 MB in the beginning and 170.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:45,803 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.71 ms. Allocated memory is still 145.2 MB. Free memory was 121.6 MB in the beginning and 121.3 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 281.95 ms. Allocated memory is still 145.2 MB. Free memory was 103.1 MB in the beginning and 93.4 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 110.13 ms. Allocated memory was 145.2 MB in the beginning and 201.3 MB in the end (delta: 56.1 MB). Free memory was 93.4 MB in the beginning and 180.5 MB in the end (delta: -87.1 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 21.64 ms. Allocated memory is still 201.3 MB. Free memory was 180.5 MB in the beginning and 178.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.69 ms. Allocated memory is still 201.3 MB. Free memory was 178.8 MB in the beginning and 165.5 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12666.70 ms. Allocated memory was 201.3 MB in the beginning and 245.4 MB in the end (delta: 44.0 MB). Free memory was 164.8 MB in the beginning and 170.3 MB in the end (delta: -5.4 MB). Peak memory consumption was 38.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: ((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a) || ((a == 0 && s == (a + 1) * (a + 1)) && s == t + a * a) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (2 * a + 1 <= t && !(0 == cond)) && t <= 2 * a + 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((((s == 4 && 2 * a + 1 <= t) && !(0 == cond)) && t <= 2 * a + 1) && t == 3) || ((s == a * 2 + a * a + 1 && 1 == cond) && s == t + a * a) - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: ((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: (((2 * a + 1 <= t && t <= 2 * a + 1) && 1 == cond) && s == t + a * a) || ((((2 * a + 1 <= t && !(0 == cond)) && t <= 2 * a + 1) && s == t + 1) && t == 3) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: (2 * a + 1 <= t && !(0 == cond)) && t <= 2 * a + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 30 locations, 6 error locations. Result: SAFE, OverallTime: 12.5s, OverallIterations: 6, TraceHistogramMax: 4, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, HoareTripleCheckerStatistics: 62 SDtfs, 131 SDslu, 149 SDs, 0 SdLazy, 373 SolverSat, 114 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 9.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 10 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 34 NumberOfFragments, 259 HoareAnnotationTreeSize, 8 FomulaSimplifications, 1129 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 8 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.0s InterpolantComputationTime, 85 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 79 ConstructedInterpolants, 0 QuantifiedInterpolants, 12120 SizeOfPredicates, 41 NumberOfNonLiveVariables, 235 ConjunctsInSsa, 123 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 PerfectInterpolantSequences, 32/58 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...