/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:49:25,261 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:49:25,264 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:49:25,276 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:49:25,276 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:49:25,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:49:25,279 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:49:25,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:49:25,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:49:25,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:49:25,284 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:49:25,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:49:25,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:49:25,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:49:25,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:49:25,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:49:25,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:49:25,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:49:25,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:49:25,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:49:25,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:49:25,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:49:25,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:49:25,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:49:25,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:49:25,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:49:25,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:49:25,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:49:25,312 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 [2020-07-20 11:49:25,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:49:25,326 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:49:25,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:49:25,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:49:25,328 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:49:25,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:49:25,328 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:49:25,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:49:25,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:49:25,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:49:25,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:49:25,329 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:49:25,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:49:25,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:49:25,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:49:25,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:49:25,330 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:49:25,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:49:25,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:49:25,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:49:25,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:49:25,331 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:49:25,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:49:25,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:49:25,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:49:25,332 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:49:25,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:25,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:49:25,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:49:25,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:49:25,667 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:49:25,680 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:49:25,684 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:49:25,685 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:49:25,686 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:49:25,686 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-20 11:49:25,767 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4ad40c1/12d3a501b0f1440fbfddc73b9efe0b1b/FLAG5189061ec [2020-07-20 11:49:26,207 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:49:26,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-crafted/simple_vardep_2.c [2020-07-20 11:49:26,215 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4ad40c1/12d3a501b0f1440fbfddc73b9efe0b1b/FLAG5189061ec [2020-07-20 11:49:26,544 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a4ad40c1/12d3a501b0f1440fbfddc73b9efe0b1b [2020-07-20 11:49:26,555 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:49:26,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:49:26,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:49:26,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:49:26,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:49:26,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59958d66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26, skipping insertion in model container [2020-07-20 11:49:26,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:49:26,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:49:26,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:49:26,756 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:49:26,772 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:49:26,787 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:49:26,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26 WrapperNode [2020-07-20 11:49:26,788 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:49:26,788 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:49:26,788 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:49:26,789 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:49:26,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,811 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,815 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,816 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (1/1) ... [2020-07-20 11:49:26,817 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:49:26,818 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:49:26,818 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:49:26,818 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:49:26,819 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (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 [2020-07-20 11:49:26,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:49:26,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:49:26,964 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 11:49:26,964 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:49:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:49:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 11:49:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:49:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:49:26,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:49:27,125 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:49:27,125 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:49:27,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:27 BoogieIcfgContainer [2020-07-20 11:49:27,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:49:27,130 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:49:27,130 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:49:27,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:49:27,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:49:26" (1/3) ... [2020-07-20 11:49:27,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696cabb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:27, skipping insertion in model container [2020-07-20 11:49:27,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:49:26" (2/3) ... [2020-07-20 11:49:27,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696cabb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:49:27, skipping insertion in model container [2020-07-20 11:49:27,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:49:27" (3/3) ... [2020-07-20 11:49:27,137 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_vardep_2.c [2020-07-20 11:49:27,148 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:49:27,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:49:27,172 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:49:27,203 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:49:27,203 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:49:27,204 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:49:27,204 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:49:27,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:49:27,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:49:27,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:49:27,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:49:27,225 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-07-20 11:49:27,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 11:49:27,232 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:27,233 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:27,234 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:27,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1847991872, now seen corresponding path program 1 times [2020-07-20 11:49:27,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:27,248 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080035087] [2020-07-20 11:49:27,248 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:27,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:27,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2020-07-20 11:49:27,314 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:27,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:49:27,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080035087] [2020-07-20 11:49:27,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:49:27,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 11:49:27,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229841310] [2020-07-20 11:49:27,495 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:49:27,495 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:27,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:49:27,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:49:27,515 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 6 states. [2020-07-20 11:49:27,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:49:27,636 INFO L93 Difference]: Finished difference Result 36 states and 47 transitions. [2020-07-20 11:49:27,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 11:49:27,638 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-07-20 11:49:27,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:49:27,648 INFO L225 Difference]: With dead ends: 36 [2020-07-20 11:49:27,648 INFO L226 Difference]: Without dead ends: 20 [2020-07-20 11:49:27,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:49:27,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-07-20 11:49:27,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-07-20 11:49:27,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 11:49:27,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-07-20 11:49:27,693 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-07-20 11:49:27,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:49:27,694 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-07-20 11:49:27,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:49:27,694 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-07-20 11:49:27,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 11:49:27,695 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:49:27,695 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:49:27,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:27,903 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:49:27,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:49:27,905 INFO L82 PathProgramCache]: Analyzing trace with hash 982254813, now seen corresponding path program 1 times [2020-07-20 11:49:27,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:49:27,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868013745] [2020-07-20 11:49:27,906 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:49:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:49:27,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 21 conjunts are in the unsatisfiable core [2020-07-20 11:49:27,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:49:28,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:28,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:49:28,087 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:49:32,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:49:40,571 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 2 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:49:40,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868013745] [2020-07-20 11:49:40,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:49:40,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 10 [2020-07-20 11:49:40,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408944083] [2020-07-20 11:49:40,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 11:49:40,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:49:40,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 11:49:40,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=58, Unknown=6, NotChecked=0, Total=90 [2020-07-20 11:49:40,581 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 10 states. [2020-07-20 11:49:59,355 WARN L193 SmtUtils]: Spent 12.39 s on a formula simplification that was a NOOP. DAG size: 48 [2020-07-20 11:50:20,674 WARN L193 SmtUtils]: Spent 8.13 s on a formula simplification that was a NOOP. DAG size: 32 [2020-07-20 11:50:30,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:50:30,943 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2020-07-20 11:50:30,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 11:50:30,944 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-07-20 11:50:30,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:50:30,947 INFO L225 Difference]: With dead ends: 34 [2020-07-20 11:50:30,947 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 11:50:30,949 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=46, Invalid=96, Unknown=14, NotChecked=0, Total=156 [2020-07-20 11:50:30,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 11:50:30,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-07-20 11:50:30,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-20 11:50:30,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-07-20 11:50:30,966 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 16 [2020-07-20 11:50:30,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:50:30,966 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-07-20 11:50:30,966 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 11:50:30,967 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-07-20 11:50:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 11:50:30,970 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:50:30,970 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:50:31,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:31,184 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:50:31,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:50:31,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1130438097, now seen corresponding path program 2 times [2020-07-20 11:50:31,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:50:31,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613133219] [2020-07-20 11:50:31,188 INFO L95 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 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:50:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:50:31,298 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 45 conjunts are in the unsatisfiable core [2020-07-20 11:50:31,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:50:31,487 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 30 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 11:50:31,488 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:50:31,531 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:50:35,813 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:50:46,096 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 11:50:46,114 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:50:58,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:51:14,949 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:51:35,764 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:52:00,397 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 30 times theorem prover too weak. 40 trivial. 0 not checked. [2020-07-20 11:52:00,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613133219] [2020-07-20 11:52:00,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:52:00,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 18 [2020-07-20 11:52:00,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220547239] [2020-07-20 11:52:00,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-20 11:52:00,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:52:00,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-20 11:52:00,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=182, Unknown=42, NotChecked=0, Total=306 [2020-07-20 11:52:00,413 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 18 states. [2020-07-20 11:52:02,871 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~i~0 3)) (.cse1 (* c_main_~i~0 2))) (and (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ c_main_~j~0 12) 4294967296) (mod (+ .cse1 12) 4294967296)) (= (mod (+ .cse0 9) 4294967296) (mod (+ c_main_~k~0 9) 4294967296)) (= (mod (+ .cse1 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)) (= (mod (+ c_main_~j~0 6) 4294967296) (mod (+ .cse1 6) 4294967296)) (= (mod (+ c_main_~k~0 15) 4294967296) (mod (+ .cse0 15) 4294967296)) (= (mod (+ c_main_~k~0 12) 4294967296) (mod (+ .cse0 12) 4294967296)) (= (mod (+ c_main_~j~0 10) 4294967296) (mod (+ .cse1 10) 4294967296)) (= (mod c_main_~k~0 4294967296) (mod .cse0 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse1 4294967296)) (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ .cse1 8) 4294967296) (mod (+ c_main_~j~0 8) 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ .cse1 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)))) is different from false [2020-07-20 11:52:58,008 WARN L193 SmtUtils]: Spent 33.80 s on a formula simplification that was a NOOP. DAG size: 85 [2020-07-20 11:54:48,613 WARN L193 SmtUtils]: Spent 1.29 m on a formula simplification. DAG size of input: 79 DAG size of output: 65 [2020-07-20 11:56:13,036 WARN L193 SmtUtils]: Spent 40.63 s on a formula simplification. DAG size of input: 63 DAG size of output: 43 [2020-07-20 11:57:04,023 WARN L193 SmtUtils]: Spent 14.64 s on a formula simplification that was a NOOP. DAG size: 53 [2020-07-20 11:58:13,810 WARN L193 SmtUtils]: Spent 21.77 s on a formula simplification. DAG size of input: 48 DAG size of output: 43 [2020-07-20 11:58:22,972 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse0 (* c_main_~i~0 3)) (.cse1 (* c_main_~i~0 2))) (and (= (mod c_main_~k~0 4294967296) (mod .cse0 4294967296)) (= (mod c_main_~j~0 4294967296) (mod .cse1 4294967296)) (= (mod (+ c_main_~k~0 6) 4294967296) (mod (+ .cse0 6) 4294967296)) (= (mod (+ .cse0 18) 4294967296) (mod (+ c_main_~k~0 18) 4294967296)) (= (mod (+ .cse0 3) 4294967296) (mod (+ c_main_~k~0 3) 4294967296)) (= (mod (+ .cse1 4) 4294967296) (mod (+ c_main_~j~0 4) 4294967296)) (= (mod (+ c_main_~j~0 12) 4294967296) (mod (+ .cse1 12) 4294967296)) (= (mod (+ .cse1 2) 4294967296) (mod (+ c_main_~j~0 2) 4294967296)))) is different from false [2020-07-20 11:59:36,907 WARN L193 SmtUtils]: Spent 27.54 s on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-07-20 12:00:35,981 WARN L193 SmtUtils]: Spent 10.24 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-20 12:01:45,845 WARN L193 SmtUtils]: Spent 8.21 s on a formula simplification that was a NOOP. DAG size: 34 [2020-07-20 12:03:18,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 12:03:18,756 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2020-07-20 12:03:18,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-20 12:03:18,758 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-07-20 12:03:18,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 12:03:18,763 INFO L225 Difference]: With dead ends: 57 [2020-07-20 12:03:18,763 INFO L226 Difference]: Without dead ends: 55 [2020-07-20 12:03:18,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 61 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 632.2s TimeCoverageRelationStatistics Valid=192, Invalid=330, Unknown=188, NotChecked=102, Total=812 [2020-07-20 12:03:18,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-20 12:03:18,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2020-07-20 12:03:18,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-07-20 12:03:18,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2020-07-20 12:03:18,781 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 40 [2020-07-20 12:03:18,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 12:03:18,782 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2020-07-20 12:03:18,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-20 12:03:18,783 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2020-07-20 12:03:18,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-07-20 12:03:18,786 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 12:03:18,786 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 12:03:18,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:18,988 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 12:03:18,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 12:03:18,989 INFO L82 PathProgramCache]: Analyzing trace with hash -811144676, now seen corresponding path program 3 times [2020-07-20 12:03:18,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 12:03:18,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799186126] [2020-07-20 12:03:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 12:03:19,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 12:03:19,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 224 conjuncts, 87 conjunts are in the unsatisfiable core [2020-07-20 12:03:19,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 12:03:19,590 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 24 proven. 156 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2020-07-20 12:03:19,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 12:03:19,651 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:21,856 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 12:03:30,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:38,733 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 12:03:38,742 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:03:53,151 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification that was a NOOP. DAG size: 24 [2020-07-20 12:03:53,160 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 12:04:09,619 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts