/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:16:49,102 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:16:49,104 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:16:49,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:16:49,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:16:49,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:16:49,119 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:16:49,121 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:16:49,123 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:16:49,123 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:16:49,124 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:16:49,126 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:16:49,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:16:49,127 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:16:49,128 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:16:49,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:16:49,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:16:49,131 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:16:49,132 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:16:49,134 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:16:49,136 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:16:49,137 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:16:49,138 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:16:49,139 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:16:49,142 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 12:16:49,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 12:16:49,142 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 12:16:49,143 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 12:16:49,146 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 12:16:49,147 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 12:16:49,148 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 12:16:49,148 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 12:16:49,149 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 12:16:49,150 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 12:16:49,151 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 12:16:49,151 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 12:16:49,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 12:16:49,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 12:16:49,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:16:49,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:16:49,157 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:16:49,159 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 12:16:49,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:16:49,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:16:49,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:16:49,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:16:49,189 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:16:49,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:16:49,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:16:49,189 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:16:49,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:16:49,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:16:49,191 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:16:49,191 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:16:49,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:16:49,192 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:16:49,192 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:16:49,192 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:16:49,192 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:16:49,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:16:49,193 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:16:49,193 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:16:49,193 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:16:49,193 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:49,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:16:49,194 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:16:49,194 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:16:49,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:16:49,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:16:49,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:16:49,195 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:16:49,195 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:16:49,477 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:16:49,492 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:16:49,495 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:16:49,497 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:16:49,497 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:16:49,498 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-07-17 12:16:49,579 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6f77845/050934f8e7c44fd7a87651ce2e97bbe4/FLAGd9e51cb7b [2020-07-17 12:16:50,112 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:16:50,113 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-07-17 12:16:50,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6f77845/050934f8e7c44fd7a87651ce2e97bbe4/FLAGd9e51cb7b [2020-07-17 12:16:50,518 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de6f77845/050934f8e7c44fd7a87651ce2e97bbe4 [2020-07-17 12:16:50,527 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:16:50,530 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:16:50,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:50,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:16:50,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:16:50,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@233cbe6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50, skipping insertion in model container [2020-07-17 12:16:50,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,551 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:16:50,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:16:50,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:50,783 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:16:50,802 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:16:50,816 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:16:50,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50 WrapperNode [2020-07-17 12:16:50,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:16:50,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:16:50,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:16:50,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:16:50,828 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,927 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,928 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... [2020-07-17 12:16:50,929 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:16:50,929 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:16:50,930 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:16:50,930 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:16:50,931 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:16:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:16:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:16:50,984 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 12:16:50,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:16:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:16:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 12:16:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 12:16:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 12:16:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:16:50,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:16:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:16:50,986 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:16:51,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:16:51,196 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 12:16:51,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:51 BoogieIcfgContainer [2020-07-17 12:16:51,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:16:51,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:16:51,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:16:51,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:16:51,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:16:50" (1/3) ... [2020-07-17 12:16:51,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682dc2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:51, skipping insertion in model container [2020-07-17 12:16:51,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:16:50" (2/3) ... [2020-07-17 12:16:51,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@682dc2b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:16:51, skipping insertion in model container [2020-07-17 12:16:51,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:16:51" (3/3) ... [2020-07-17 12:16:51,211 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-07-17 12:16:51,225 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:16:51,235 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:16:51,256 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:16:51,296 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:16:51,297 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:16:51,297 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:16:51,297 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:16:51,297 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:16:51,298 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:16:51,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:16:51,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:16:51,342 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-07-17 12:16:51,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 12:16:51,351 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:51,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:51,353 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:51,362 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:51,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1330899215, now seen corresponding path program 1 times [2020-07-17 12:16:51,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:51,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580042085] [2020-07-17 12:16:51,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:51,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:51,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:51,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580042085] [2020-07-17 12:16:51,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:16:51,636 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 12:16:51,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286190772] [2020-07-17 12:16:51,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:16:51,645 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:51,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:16:51,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 12:16:51,661 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-07-17 12:16:51,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:51,745 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-07-17 12:16:51,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:16:51,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-07-17 12:16:51,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:51,759 INFO L225 Difference]: With dead ends: 26 [2020-07-17 12:16:51,759 INFO L226 Difference]: Without dead ends: 13 [2020-07-17 12:16:51,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 12:16:51,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-17 12:16:51,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-17 12:16:51,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-17 12:16:51,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-07-17 12:16:51,806 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-07-17 12:16:51,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:51,807 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-07-17 12:16:51,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:16:51,808 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-07-17 12:16:51,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 12:16:51,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:51,809 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:51,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:16:51,810 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:51,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:51,810 INFO L82 PathProgramCache]: Analyzing trace with hash -1691859760, now seen corresponding path program 1 times [2020-07-17 12:16:51,811 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:51,811 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357465010] [2020-07-17 12:16:51,811 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:51,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:51,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:51,919 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:51,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357465010] [2020-07-17 12:16:51,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [996864424] [2020-07-17 12:16:51,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:51,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:51,977 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-17 12:16:51,983 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:52,028 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:52,034 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:52,057 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:52,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:52,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 7 [2020-07-17 12:16:52,060 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040128957] [2020-07-17 12:16:52,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 12:16:52,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:52,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 12:16:52,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-07-17 12:16:52,062 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 7 states. [2020-07-17 12:16:52,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:52,170 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-07-17 12:16:52,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 12:16:52,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-07-17 12:16:52,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:52,172 INFO L225 Difference]: With dead ends: 17 [2020-07-17 12:16:52,172 INFO L226 Difference]: Without dead ends: 14 [2020-07-17 12:16:52,173 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-07-17 12:16:52,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-07-17 12:16:52,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-07-17 12:16:52,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-07-17 12:16:52,183 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2020-07-17 12:16:52,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:52,187 INFO L479 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-07-17 12:16:52,188 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 12:16:52,188 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-07-17 12:16:52,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-17 12:16:52,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:52,189 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:52,390 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-17 12:16:52,391 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:52,391 INFO L82 PathProgramCache]: Analyzing trace with hash -908107473, now seen corresponding path program 2 times [2020-07-17 12:16:52,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:52,392 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255540772] [2020-07-17 12:16:52,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:52,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:52,509 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:52,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255540772] [2020-07-17 12:16:52,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250608370] [2020-07-17 12:16:52,510 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 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:52,548 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-07-17 12:16:52,548 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-17 12:16:52,549 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-17 12:16:52,551 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:52,586 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:52,591 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:52,614 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:52,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-17 12:16:52,615 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2020-07-17 12:16:52,615 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102117018] [2020-07-17 12:16:52,616 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 12:16:52,617 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:52,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 12:16:52,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 12:16:52,618 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-07-17 12:16:52,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:52,727 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2020-07-17 12:16:52,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 12:16:52,728 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2020-07-17 12:16:52,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:52,729 INFO L225 Difference]: With dead ends: 18 [2020-07-17 12:16:52,729 INFO L226 Difference]: Without dead ends: 15 [2020-07-17 12:16:52,730 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-17 12:16:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-07-17 12:16:52,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-07-17 12:16:52,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-07-17 12:16:52,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-07-17 12:16:52,735 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-07-17 12:16:52,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:52,736 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-07-17 12:16:52,736 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 12:16:52,736 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-07-17 12:16:52,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 12:16:52,737 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:16:52,756 INFO L422 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:16:52,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:52,968 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:16:52,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:16:52,970 INFO L82 PathProgramCache]: Analyzing trace with hash 1913376944, now seen corresponding path program 3 times [2020-07-17 12:16:52,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:16:52,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028476903] [2020-07-17 12:16:52,971 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:16:52,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:53,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:16:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:16:53,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028476903] [2020-07-17 12:16:53,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617769013] [2020-07-17 12:16:53,058 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 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-07-17 12:16:53,091 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-07-17 12:16:53,091 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:53,092 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-17 12:16:53,094 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-17 12:16:53,117 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:53,119 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-17 12:16:53,134 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-17 12:16:53,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-17 12:16:53,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [8] total 10 [2020-07-17 12:16:53,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465496935] [2020-07-17 12:16:53,135 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 12:16:53,136 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:16:53,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 12:16:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-17 12:16:53,136 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-07-17 12:16:53,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:16:53,162 INFO L93 Difference]: Finished difference Result 15 states and 15 transitions. [2020-07-17 12:16:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 12:16:53,163 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-17 12:16:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:16:53,163 INFO L225 Difference]: With dead ends: 15 [2020-07-17 12:16:53,163 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:16:53,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-07-17 12:16:53,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:16:53,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:16:53,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:16:53,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:16:53,166 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-07-17 12:16:53,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:16:53,166 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:16:53,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 12:16:53,166 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:16:53,167 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:16:53,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-17 12:16:53,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:16:53,441 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:16:53,442 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-07-17 12:16:53,442 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:53,442 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:16:53,442 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:16:53,442 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:16:53,443 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:16:53,443 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-17 12:16:53,443 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-17 12:16:53,443 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-17 12:16:53,443 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-17 12:16:53,444 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-07-17 12:16:53,444 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-07-17 12:16:53,444 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-07-17 12:16:53,444 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-07-17 12:16:53,444 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-07-17 12:16:53,445 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-17 12:16:53,445 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-07-17 12:16:53,445 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-07-17 12:16:53,445 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and (<= (+ main_~main__x~0 50) 0) .cse0) (and (<= (+ main_~main__x~0 2) main_~main__y~0) .cse0))) [2020-07-17 12:16:53,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:16:53 BoogieIcfgContainer [2020-07-17 12:16:53,465 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:16:53,468 INFO L168 Benchmark]: Toolchain (without parser) took 2938.26 ms. Allocated memory was 136.8 MB in the beginning and 231.2 MB in the end (delta: 94.4 MB). Free memory was 101.0 MB in the beginning and 170.0 MB in the end (delta: -69.0 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:53,470 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:16:53,471 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.49 ms. Allocated memory is still 136.8 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:53,472 INFO L168 Benchmark]: Boogie Preprocessor took 111.15 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 179.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:53,473 INFO L168 Benchmark]: RCFGBuilder took 271.38 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 166.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:53,474 INFO L168 Benchmark]: TraceAbstraction took 2263.36 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 170.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-17 12:16:53,478 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.8 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.49 ms. Allocated memory is still 136.8 MB. Free memory was 100.7 MB in the beginning and 91.0 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.15 ms. Allocated memory was 136.8 MB in the beginning and 200.8 MB in the end (delta: 64.0 MB). Free memory was 91.0 MB in the beginning and 179.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 271.38 ms. Allocated memory is still 200.8 MB. Free memory was 179.4 MB in the beginning and 166.7 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2263.36 ms. Allocated memory was 200.8 MB in the beginning and 231.2 MB in the end (delta: 30.4 MB). Free memory was 166.7 MB in the beginning and 170.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 28]: Loop Invariant Derived loop invariant: (main__x + 50 <= 0 && \old(__return_65) == __return_65) || (main__x + 2 <= main__y && \old(__return_65) == __return_65) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 44 SDtfs, 32 SDslu, 64 SDs, 0 SdLazy, 78 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 74 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 8 NumberOfFragments, 31 HoareAnnotationTreeSize, 5 FomulaSimplifications, 36 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 89 NumberOfCodeBlocks, 88 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 82 ConstructedInterpolants, 0 QuantifiedInterpolants, 2840 SizeOfPredicates, 12 NumberOfNonLiveVariables, 149 ConjunctsInSsa, 23 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...