/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 --traceabstraction.assert.codeblocks.term.scoring.heuristic DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 03:36:05,644 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 03:36:05,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 03:36:05,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 03:36:05,659 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 03:36:05,660 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 03:36:05,661 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 03:36:05,663 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 03:36:05,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 03:36:05,666 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 03:36:05,667 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 03:36:05,668 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 03:36:05,668 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 03:36:05,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 03:36:05,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 03:36:05,672 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 03:36:05,672 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 03:36:05,673 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 03:36:05,675 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 03:36:05,678 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 03:36:05,679 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 03:36:05,681 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 03:36:05,682 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 03:36:05,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 03:36:05,685 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 03:36:05,694 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 03:36:05,695 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 03:36:05,695 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 03:36:05,696 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 03:36:05,711 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 03:36:05,711 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 03:36:05,713 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 03:36:05,713 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 03:36:05,713 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 03:36:05,713 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 03:36:05,714 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 03:36:05,714 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 03:36:05,714 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 03:36:05,714 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 03:36:05,714 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 03:36:05,715 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 03:36:05,715 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 03:36:05,715 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 03:36:05,715 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 03:36:05,715 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 03:36:05,716 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 03:36:05,716 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 03:36:05,716 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 03:36:05,716 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 03:36:05,716 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 03:36:05,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 03:36:05,717 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 03:36:05,717 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 03:36:05,717 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 03:36:05,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 03:36:05,718 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 03:36:05,718 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 03:36:05,718 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 03:36:05,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> DAGSIZE Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 03:36:06,023 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 03:36:06,037 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 03:36:06,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 03:36:06,042 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 03:36:06,043 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 03:36:06,044 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 03:36:06,120 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05760c42f/0ff94ca03b8b467082108ec40047793e/FLAGa9fdd9d10 [2020-07-20 03:36:06,636 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 03:36:06,637 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 03:36:06,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05760c42f/0ff94ca03b8b467082108ec40047793e/FLAGa9fdd9d10 [2020-07-20 03:36:06,955 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05760c42f/0ff94ca03b8b467082108ec40047793e [2020-07-20 03:36:06,964 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 03:36:06,967 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 03:36:06,968 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:06,969 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 03:36:06,974 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 03:36:06,975 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:06" (1/1) ... [2020-07-20 03:36:06,979 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6df29e44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:06, skipping insertion in model container [2020-07-20 03:36:06,979 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 03:36:06" (1/1) ... [2020-07-20 03:36:06,989 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 03:36:07,005 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 03:36:07,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:07,185 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 03:36:07,199 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 03:36:07,213 INFO L208 MainTranslator]: Completed translation [2020-07-20 03:36:07,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07 WrapperNode [2020-07-20 03:36:07,214 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 03:36:07,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 03:36:07,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 03:36:07,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 03:36:07,305 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,315 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,316 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,321 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,323 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (1/1) ... [2020-07-20 03:36:07,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 03:36:07,327 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 03:36:07,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 03:36:07,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 03:36:07,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (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 03:36:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 03:36:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 03:36:07,392 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-07-20 03:36:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-20 03:36:07,393 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 03:36:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 03:36:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-20 03:36:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-07-20 03:36:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 03:36:07,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 03:36:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 03:36:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 03:36:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 03:36:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 03:36:07,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 03:36:07,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 03:36:07,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 03:36:07,611 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 03:36:07,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:36:07 BoogieIcfgContainer [2020-07-20 03:36:07,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 03:36:07,617 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 03:36:07,617 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 03:36:07,620 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 03:36:07,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 03:36:06" (1/3) ... [2020-07-20 03:36:07,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630db7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:36:07, skipping insertion in model container [2020-07-20 03:36:07,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 03:36:07" (2/3) ... [2020-07-20 03:36:07,622 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630db7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 03:36:07, skipping insertion in model container [2020-07-20 03:36:07,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 03:36:07" (3/3) ... [2020-07-20 03:36:07,624 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-07-20 03:36:07,635 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 03:36:07,643 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 03:36:07,668 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 03:36:07,736 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 03:36:07,736 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 03:36:07,736 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 03:36:07,737 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 03:36:07,737 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 03:36:07,737 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 03:36:07,737 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 03:36:07,737 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 03:36:07,763 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 03:36:07,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 03:36:07,768 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:07,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:07,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:07,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:07,775 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-07-20 03:36:07,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:07,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520161142] [2020-07-20 03:36:07,784 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:07,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:08,040 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 03:36:08,041 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520161142] [2020-07-20 03:36:08,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 03:36:08,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 03:36:08,044 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967092602] [2020-07-20 03:36:08,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 03:36:08,050 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:08,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 03:36:08,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 03:36:08,069 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-07-20 03:36:08,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:08,283 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 03:36:08,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 03:36:08,285 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-20 03:36:08,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:08,296 INFO L225 Difference]: With dead ends: 39 [2020-07-20 03:36:08,296 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 03:36:08,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 03:36:08,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 03:36:08,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-20 03:36:08,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 03:36:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 03:36:08,342 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-07-20 03:36:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:08,343 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 03:36:08,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 03:36:08,343 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 03:36:08,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 03:36:08,344 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:08,344 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:08,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 03:36:08,345 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:08,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:08,346 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-07-20 03:36:08,346 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:08,347 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377961743] [2020-07-20 03:36:08,347 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:08,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:08,556 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:08,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377961743] [2020-07-20 03:36:08,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113340890] [2020-07-20 03:36:08,557 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@64ad92cb No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:08,641 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@64ad92cb issued 3 check-sat command(s) [2020-07-20 03:36:08,641 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:08,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 03:36:08,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:08,716 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:08,717 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:08,721 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:08,722 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:08,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:08,751 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:08,752 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:08,755 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:08,756 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:08,756 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:08,835 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:08,836 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:08,841 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 03:36:08,842 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:08,842 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:08,844 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:08,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:08,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2020-07-20 03:36:08,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867578045] [2020-07-20 03:36:08,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 03:36:08,860 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:08,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 03:36:08,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-07-20 03:36:08,862 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 13 states. [2020-07-20 03:36:09,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:09,111 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-20 03:36:09,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 03:36:09,112 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-07-20 03:36:09,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:09,113 INFO L225 Difference]: With dead ends: 26 [2020-07-20 03:36:09,113 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 03:36:09,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-07-20 03:36:09,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 03:36:09,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-20 03:36:09,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 03:36:09,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-20 03:36:09,123 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-20 03:36:09,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:09,123 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-20 03:36:09,123 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 03:36:09,123 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-20 03:36:09,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 03:36:09,124 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:09,124 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:09,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 03:36:09,340 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:09,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:09,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1866674708, now seen corresponding path program 2 times [2020-07-20 03:36:09,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:09,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266121133] [2020-07-20 03:36:09,341 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:09,556 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:09,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266121133] [2020-07-20 03:36:09,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [80219660] [2020-07-20 03:36:09,557 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2e4250 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 [2020-07-20 03:36:09,625 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4a2e4250 issued 3 check-sat command(s) [2020-07-20 03:36:09,625 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:09,628 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-20 03:36:09,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:09,637 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:09,638 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,641 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:09,641 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,641 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:09,653 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:09,654 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,657 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:09,657 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,658 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:09,736 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:09,737 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,740 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:09,741 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,741 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:09,810 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:09,812 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,814 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 03:36:09,815 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:09,815 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:09,817 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:09,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:09,817 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2020-07-20 03:36:09,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433282414] [2020-07-20 03:36:09,818 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 03:36:09,819 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:09,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 03:36:09,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-07-20 03:36:09,820 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2020-07-20 03:36:10,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:10,310 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-07-20 03:36:10,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 03:36:10,310 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2020-07-20 03:36:10,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:10,312 INFO L225 Difference]: With dead ends: 31 [2020-07-20 03:36:10,312 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 03:36:10,313 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 03:36:10,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 03:36:10,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-20 03:36:10,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 03:36:10,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-20 03:36:10,320 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-07-20 03:36:10,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:10,321 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-20 03:36:10,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 03:36:10,321 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-20 03:36:10,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 03:36:10,322 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:10,322 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:10,536 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:10,536 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:10,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:10,537 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 3 times [2020-07-20 03:36:10,538 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:10,539 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584890303] [2020-07-20 03:36:10,539 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:10,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:10,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:10,761 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:10,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584890303] [2020-07-20 03:36:10,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [969986542] [2020-07-20 03:36:10,762 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60f25245 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:10,823 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@60f25245 issued 3 check-sat command(s) [2020-07-20 03:36:10,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:10,826 WARN L261 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-20 03:36:10,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:10,835 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:10,835 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:10,837 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:10,838 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:10,838 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:10,847 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:10,848 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:10,850 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:10,850 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:10,851 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:10,922 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:10,923 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:10,929 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:10,930 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:10,930 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:11,031 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:11,032 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:11,036 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:11,037 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:11,037 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:11,123 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:11,124 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:11,126 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:11,127 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:11,127 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:11,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:11,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 29 [2020-07-20 03:36:11,133 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428505099] [2020-07-20 03:36:11,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 03:36:11,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:11,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 03:36:11,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-07-20 03:36:11,138 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 29 states. [2020-07-20 03:36:11,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:11,917 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-20 03:36:11,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 03:36:11,918 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2020-07-20 03:36:11,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:11,919 INFO L225 Difference]: With dead ends: 36 [2020-07-20 03:36:11,919 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 03:36:11,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 472 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=232, Invalid=1838, Unknown=0, NotChecked=0, Total=2070 [2020-07-20 03:36:11,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 03:36:11,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-20 03:36:11,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 03:36:11,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-20 03:36:11,932 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-20 03:36:11,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:11,932 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-20 03:36:11,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 03:36:11,932 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-20 03:36:11,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 03:36:11,933 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:11,933 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:12,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:12,141 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:12,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:12,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1506163092, now seen corresponding path program 4 times [2020-07-20 03:36:12,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:12,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642192416] [2020-07-20 03:36:12,142 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:12,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:12,483 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:12,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642192416] [2020-07-20 03:36:12,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1631972657] [2020-07-20 03:36:12,484 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75419a0 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:12,540 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@75419a0 issued 3 check-sat command(s) [2020-07-20 03:36:12,540 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:12,544 WARN L261 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-20 03:36:12,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:12,568 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:12,569 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,571 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:12,571 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,571 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:12,597 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:12,598 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,601 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:12,601 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,602 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:12,688 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:12,689 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,691 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:12,692 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,692 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:12,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:12,778 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,780 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:12,780 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:12,891 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:12,893 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,895 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:12,896 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,896 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:12,992 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:12,993 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,996 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 03:36:12,996 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:12,996 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:12,999 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:12,999 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:12,999 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 37 [2020-07-20 03:36:13,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251408463] [2020-07-20 03:36:13,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 03:36:13,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:13,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 03:36:13,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 03:36:13,007 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 37 states. [2020-07-20 03:36:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:14,045 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-07-20 03:36:14,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 03:36:14,046 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 31 [2020-07-20 03:36:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:14,048 INFO L225 Difference]: With dead ends: 41 [2020-07-20 03:36:14,048 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 03:36:14,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 870 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=337, Invalid=3085, Unknown=0, NotChecked=0, Total=3422 [2020-07-20 03:36:14,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 03:36:14,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-07-20 03:36:14,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 03:36:14,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-07-20 03:36:14,058 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-07-20 03:36:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:14,058 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-07-20 03:36:14,058 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 03:36:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-07-20 03:36:14,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 03:36:14,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:14,060 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:14,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:14,272 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:14,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:14,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1044673952, now seen corresponding path program 5 times [2020-07-20 03:36:14,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:14,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925179495] [2020-07-20 03:36:14,274 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:14,727 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:14,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925179495] [2020-07-20 03:36:14,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768185740] [2020-07-20 03:36:14,728 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4af4f045 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:14,808 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@4af4f045 issued 3 check-sat command(s) [2020-07-20 03:36:14,808 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:14,812 WARN L261 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 121 conjunts are in the unsatisfiable core [2020-07-20 03:36:14,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:14,821 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:14,822 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:14,823 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:14,824 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:14,824 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:14,834 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:14,835 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:14,856 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:14,857 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:14,857 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:14,970 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:14,971 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:14,974 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:14,974 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:14,975 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:15,068 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:15,068 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,073 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:15,073 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,074 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:15,188 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:15,189 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,196 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:15,196 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,197 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:15,318 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:15,319 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,323 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:15,323 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,324 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:15,446 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:15,449 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,453 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:15,454 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:15,454 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:15,458 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:15,458 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:15,458 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 45 [2020-07-20 03:36:15,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242024533] [2020-07-20 03:36:15,461 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-20 03:36:15,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:15,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-20 03:36:15,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 03:36:15,464 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 45 states. [2020-07-20 03:36:16,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:16,881 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-07-20 03:36:16,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 03:36:16,882 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 36 [2020-07-20 03:36:16,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:16,884 INFO L225 Difference]: With dead ends: 46 [2020-07-20 03:36:16,884 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 03:36:16,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1389 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=458, Invalid=4654, Unknown=0, NotChecked=0, Total=5112 [2020-07-20 03:36:16,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 03:36:16,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-20 03:36:16,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 03:36:16,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-07-20 03:36:16,895 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-07-20 03:36:16,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:16,896 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-07-20 03:36:16,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-20 03:36:16,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-20 03:36:16,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 03:36:16,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:16,897 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:17,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 03:36:17,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:17,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:17,103 INFO L82 PathProgramCache]: Analyzing trace with hash -272244460, now seen corresponding path program 6 times [2020-07-20 03:36:17,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:17,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [429803795] [2020-07-20 03:36:17,104 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:17,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:17,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [429803795] [2020-07-20 03:36:17,660 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [808415548] [2020-07-20 03:36:17,660 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e88ed1a No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:17,748 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5e88ed1a issued 3 check-sat command(s) [2020-07-20 03:36:17,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:17,753 WARN L261 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 142 conjunts are in the unsatisfiable core [2020-07-20 03:36:17,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:17,767 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:17,768 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,769 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:17,770 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,770 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:17,777 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:17,777 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,779 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:17,779 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,780 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:17,877 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:17,878 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,880 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:17,880 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,880 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:17,985 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:17,986 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,989 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:17,989 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:17,990 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:18,116 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:18,117 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,118 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:18,118 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,119 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:18,248 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:18,248 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,250 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:18,251 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,251 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:18,401 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:18,401 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,404 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:18,404 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,404 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:18,538 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:18,539 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,542 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 03:36:18,543 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:18,543 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:18,548 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:18,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:18,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 53 [2020-07-20 03:36:18,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270026120] [2020-07-20 03:36:18,550 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 03:36:18,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:18,552 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 03:36:18,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 03:36:18,553 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 53 states. [2020-07-20 03:36:20,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:20,001 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-07-20 03:36:20,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 03:36:20,001 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 41 [2020-07-20 03:36:20,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:20,003 INFO L225 Difference]: With dead ends: 51 [2020-07-20 03:36:20,003 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 03:36:20,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2029 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=595, Invalid=6545, Unknown=0, NotChecked=0, Total=7140 [2020-07-20 03:36:20,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 03:36:20,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-20 03:36:20,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 03:36:20,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-20 03:36:20,015 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-07-20 03:36:20,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:20,015 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-20 03:36:20,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 03:36:20,015 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-20 03:36:20,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 03:36:20,016 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:20,017 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:20,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:20,230 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:20,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:20,231 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 7 times [2020-07-20 03:36:20,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:20,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99444094] [2020-07-20 03:36:20,232 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:20,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:20,887 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:20,887 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99444094] [2020-07-20 03:36:20,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [667633631] [2020-07-20 03:36:20,888 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d5118a6 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:20,978 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d5118a6 issued 3 check-sat command(s) [2020-07-20 03:36:20,978 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:20,982 WARN L261 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 163 conjunts are in the unsatisfiable core [2020-07-20 03:36:20,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:20,991 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:20,992 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:20,994 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:20,995 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:20,995 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:21,001 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,002 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,003 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,004 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,004 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,104 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,105 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,107 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,107 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,107 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,231 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,232 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,242 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,242 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,243 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,371 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,372 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,374 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,374 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,374 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,501 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,501 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,504 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,504 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,504 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,650 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,651 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,652 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,653 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,653 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,817 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:21,818 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,820 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:21,820 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,820 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:21,974 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:21,976 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,979 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 03:36:21,979 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:21,980 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:21,986 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:21,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:21,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 61 [2020-07-20 03:36:21,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601539578] [2020-07-20 03:36:21,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-20 03:36:21,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:21,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-20 03:36:21,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3351, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 03:36:21,990 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 61 states. [2020-07-20 03:36:24,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:24,207 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-07-20 03:36:24,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-20 03:36:24,210 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 46 [2020-07-20 03:36:24,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:24,211 INFO L225 Difference]: With dead ends: 56 [2020-07-20 03:36:24,211 INFO L226 Difference]: Without dead ends: 53 [2020-07-20 03:36:24,214 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 96 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2790 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=748, Invalid=8758, Unknown=0, NotChecked=0, Total=9506 [2020-07-20 03:36:24,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-20 03:36:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-07-20 03:36:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 03:36:24,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-07-20 03:36:24,223 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-07-20 03:36:24,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:24,223 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-07-20 03:36:24,223 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-20 03:36:24,223 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-07-20 03:36:24,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 03:36:24,224 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:24,225 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:24,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:24,432 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:24,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:24,433 INFO L82 PathProgramCache]: Analyzing trace with hash -168154988, now seen corresponding path program 8 times [2020-07-20 03:36:24,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:24,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688765969] [2020-07-20 03:36:24,434 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:25,105 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:25,105 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688765969] [2020-07-20 03:36:25,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21982232] [2020-07-20 03:36:25,106 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c54e38c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:25,245 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6c54e38c issued 3 check-sat command(s) [2020-07-20 03:36:25,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:25,250 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 184 conjunts are in the unsatisfiable core [2020-07-20 03:36:25,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:25,259 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:25,259 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,261 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,262 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,262 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:25,268 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:25,268 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,270 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,270 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,271 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:25,377 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:25,378 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,380 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,380 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,380 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:25,509 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:25,509 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,511 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,511 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:25,654 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:25,655 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,657 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,657 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,657 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:25,795 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:25,796 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,798 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,798 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,798 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:25,952 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:25,953 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,960 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:25,960 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:25,960 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:26,132 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:26,132 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:26,136 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:26,137 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:26,137 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:26,324 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:26,325 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:26,326 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:26,327 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:26,327 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:26,487 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:26,488 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:26,490 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 03:36:26,491 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:26,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 03:36:26,496 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:26,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:26,497 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 69 [2020-07-20 03:36:26,497 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771620239] [2020-07-20 03:36:26,498 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-20 03:36:26,498 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:26,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-20 03:36:26,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4308, Unknown=0, NotChecked=0, Total=4692 [2020-07-20 03:36:26,500 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 69 states. [2020-07-20 03:36:29,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:29,693 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-07-20 03:36:29,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 03:36:29,693 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 51 [2020-07-20 03:36:29,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:29,697 INFO L225 Difference]: With dead ends: 61 [2020-07-20 03:36:29,698 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 03:36:29,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=917, Invalid=11293, Unknown=0, NotChecked=0, Total=12210 [2020-07-20 03:36:29,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 03:36:29,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-20 03:36:29,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 03:36:29,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-07-20 03:36:29,711 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-07-20 03:36:29,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:29,712 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-07-20 03:36:29,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-20 03:36:29,712 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-07-20 03:36:29,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 03:36:29,713 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:29,713 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:29,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-20 03:36:29,928 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:29,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:29,929 INFO L82 PathProgramCache]: Analyzing trace with hash 539879072, now seen corresponding path program 9 times [2020-07-20 03:36:29,930 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:29,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609915185] [2020-07-20 03:36:29,930 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:30,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:30,760 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:30,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609915185] [2020-07-20 03:36:30,761 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306490729] [2020-07-20 03:36:30,762 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c21104e No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:30,918 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c21104e issued 3 check-sat command(s) [2020-07-20 03:36:30,918 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:30,923 WARN L261 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 202 conjunts are in the unsatisfiable core [2020-07-20 03:36:30,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:30,937 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:30,937 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:30,941 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:30,942 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:30,942 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 03:36:30,948 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:30,949 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:30,950 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:30,951 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:30,951 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:31,063 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:31,064 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,065 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:31,066 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,066 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:31,194 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:31,195 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,196 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:31,197 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,197 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:31,335 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:31,335 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,337 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:31,337 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,338 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:31,488 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:31,488 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,490 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:31,491 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,491 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:31,657 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:31,658 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,659 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:31,660 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,660 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:31,839 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:31,840 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,842 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:31,843 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:31,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:32,039 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:32,040 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:32,042 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:32,042 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:32,043 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:32,246 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-20 03:36:32,247 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:32,249 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:32,249 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:32,249 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 03:36:32,358 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2020-07-20 03:36:32,358 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:32,359 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:32,360 INFO L544 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:32,360 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 03:36:32,367 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:32,367 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:32,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 76 [2020-07-20 03:36:32,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330244966] [2020-07-20 03:36:32,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-20 03:36:32,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:32,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-20 03:36:32,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2020-07-20 03:36:32,370 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 76 states. [2020-07-20 03:36:36,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:36,335 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-07-20 03:36:36,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-20 03:36:36,336 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 56 [2020-07-20 03:36:36,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:36,338 INFO L225 Difference]: With dead ends: 66 [2020-07-20 03:36:36,338 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 03:36:36,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4571 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=1098, Invalid=13908, Unknown=0, NotChecked=0, Total=15006 [2020-07-20 03:36:36,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 03:36:36,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-07-20 03:36:36,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 03:36:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-07-20 03:36:36,350 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-07-20 03:36:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:36,350 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-07-20 03:36:36,350 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-20 03:36:36,350 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-07-20 03:36:36,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 03:36:36,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 03:36:36,352 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 03:36:36,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:36,567 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 03:36:36,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 03:36:36,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1424289772, now seen corresponding path program 10 times [2020-07-20 03:36:36,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 03:36:36,567 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918051610] [2020-07-20 03:36:36,568 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@225095d6 [2020-07-20 03:36:36,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:37,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 03:36:37,746 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 206 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:37,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918051610] [2020-07-20 03:36:37,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1208016763] [2020-07-20 03:36:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d485abc No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:37,898 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5d485abc issued 3 check-sat command(s) [2020-07-20 03:36:37,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 03:36:37,907 WARN L261 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 230 conjunts are in the unsatisfiable core [2020-07-20 03:36:37,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 03:36:37,923 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2020-07-20 03:36:37,924 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:37,928 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:37,929 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:37,929 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-07-20 03:36:38,120 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:38,120 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:38,121 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,129 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:38,129 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,130 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:38,344 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:38,345 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:38,346 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,356 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:38,357 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,357 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:38,575 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:38,575 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:38,576 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,584 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:38,585 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,585 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:38,826 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:38,826 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:38,827 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,834 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:38,835 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:38,835 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:39,101 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:39,102 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:39,102 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,111 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:39,111 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,112 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:39,376 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:39,376 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:39,377 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,385 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:39,386 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,386 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:39,662 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:39,662 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:39,663 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,671 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:39,671 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,671 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:39,972 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:39,972 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:39,973 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,982 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:39,983 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:39,983 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:40,309 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:40,310 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:40,311 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:40,319 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:40,320 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:40,320 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:40,655 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:40,655 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 25 [2020-07-20 03:36:40,656 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:40,664 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 03:36:40,664 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:40,665 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 03:36:40,965 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2020-07-20 03:36:40,966 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 03:36:40,967 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 03:36:40,968 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 03:36:40,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2020-07-20 03:36:40,978 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 03:36:40,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 03:36:40,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 46] total 91 [2020-07-20 03:36:40,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4343794] [2020-07-20 03:36:40,979 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-20 03:36:40,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 03:36:40,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-20 03:36:40,981 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=7620, Unknown=0, NotChecked=0, Total=8190 [2020-07-20 03:36:40,981 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 91 states. [2020-07-20 03:36:42,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 03:36:42,976 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2020-07-20 03:36:42,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-20 03:36:42,976 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 61 [2020-07-20 03:36:42,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 03:36:42,977 INFO L225 Difference]: With dead ends: 68 [2020-07-20 03:36:42,977 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 03:36:42,980 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6325 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=1151, Invalid=16939, Unknown=0, NotChecked=0, Total=18090 [2020-07-20 03:36:42,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 03:36:42,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 03:36:42,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 03:36:42,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 03:36:42,981 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-07-20 03:36:42,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 03:36:42,981 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 03:36:42,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-20 03:36:42,982 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 03:36:42,982 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 03:36:43,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 03:36:43,185 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 03:36:43,715 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 91 [2020-07-20 03:36:44,072 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2020-07-20 03:36:44,308 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2020-07-20 03:36:44,551 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-07-20 03:36:44,555 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:36:44,555 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-07-20 03:36:44,555 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:36:44,556 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-20 03:36:44,556 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 9 18) the Hoare annotation is: (let ((.cse5 (select |#memory_int| |foo_#in~p.base|)) (.cse6 (select |old(#memory_int)| |foo_#in~p.base|))) (let ((.cse3 (select .cse6 0)) (.cse4 (select .cse5 0)) (.cse0 (select .cse6 |foo_#in~p.offset|)) (.cse1 (select .cse5 |foo_#in~p.offset|)) (.cse2 (not (= 0 |foo_#in~p.offset|)))) (and (or (not (= 16 .cse0)) (= 16 .cse1) .cse2) (or (= 17 .cse1) (not (= 17 .cse0)) .cse2) (or (not (= 19 .cse3)) (= 19 .cse1) .cse2) (or (not (= 20 .cse0)) (= 20 .cse1) .cse2) (or (= 12 .cse1) (not (= 12 .cse0)) .cse2) (or (not (= 13 .cse3)) (= 13 .cse4) .cse2) (or (= 11 .cse1) (not (= 11 .cse0)) .cse2) (or (not (= 15 .cse3)) (= 15 .cse4) .cse2) (or (not (= 18 .cse3)) (= 18 .cse1) .cse2) (or (not (= 14 .cse0)) (= 14 .cse4) .cse2) (or (not (= 10 .cse0)) (= 10 .cse1) .cse2)))) [2020-07-20 03:36:44,556 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-20 03:36:44,556 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 03:36:44,556 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-20 03:36:44,557 INFO L264 CegarLoopResult]: At program point L11(line 11) the Hoare annotation is: (let ((.cse10 (select |old(#memory_int)| |foo_#in~p.base|)) (.cse8 (select |#memory_int| foo_~p.base)) (.cse9 (select |#memory_int| |foo_#in~p.base|))) (let ((.cse7 (select .cse9 0)) (.cse6 (select .cse8 foo_~p.offset)) (.cse5 (select .cse10 0)) (.cse0 (select .cse10 |foo_#in~p.offset|)) (.cse2 (select .cse9 |foo_#in~p.offset|)) (.cse3 (select .cse8 0)) (.cse4 (= 0 foo_~p.offset)) (.cse1 (not (= 0 |foo_#in~p.offset|)))) (and (or (not (= 11 .cse0)) .cse1 (and (= 11 .cse2) (= 11 .cse3) .cse4)) (or (not (= 20 .cse0)) .cse1) (or (not (= 15 .cse5)) .cse1 (and (= 15 .cse6) (= 15 .cse7) .cse4)) (or (and (= 19 .cse3) (= 19 .cse7) .cse4) (not (= 19 .cse5)) .cse1) (or (not (= 10 .cse0)) (and (= 10 .cse6) (= 10 .cse2) .cse4) .cse1) (or (not (= 16 .cse0)) (and (= 16 .cse3) (= 16 .cse2) .cse4) .cse1) (or (not (= 13 .cse5)) (and (= 13 .cse7) (= 13 .cse3) .cse4) .cse1) (or (not (= 14 .cse0)) (and (= 14 .cse7) (= 14 .cse6) .cse4) .cse1) (or (and (= 12 .cse2) .cse4 (= 12 .cse6)) (not (= 12 .cse0)) .cse1) (or (and (= 18 .cse6) (= 18 .cse2) .cse4) (not (= 18 .cse5)) .cse1) (or (not (= 17 .cse0)) (and (= 17 .cse2) (= 17 .cse3) .cse4) .cse1)))) [2020-07-20 03:36:44,557 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-07-20 03:36:44,557 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-07-20 03:36:44,557 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 03:36:44,557 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 03:36:44,557 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 03:36:44,557 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 03:36:44,558 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-20 03:36:44,558 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-07-20 03:36:44,558 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (= 0 main_~p~0.offset) (= 10 (select (select |#memory_int| main_~p~0.base) main_~p~0.offset))) [2020-07-20 03:36:44,558 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-07-20 03:36:44,558 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 03:36:44,558 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 03:36:44,558 INFO L264 CegarLoopResult]: At program point plusENTRY(lines 4 7) the Hoare annotation is: (let ((.cse5 (select |old(#memory_int)| |plus_#in~p.base|)) (.cse6 (select |#memory_int| |plus_#in~p.base|))) (let ((.cse0 (select .cse6 |plus_#in~p.offset|)) (.cse1 (select .cse5 0)) (.cse3 (select .cse6 0)) (.cse2 (not (= 0 |plus_#in~p.offset|))) (.cse4 (select .cse5 |plus_#in~p.offset|))) (and (or (= 18 .cse0) (not (= 18 .cse1)) .cse2) (or (= 17 .cse3) .cse2 (not (= 17 .cse4))) (or .cse2 (= 15 .cse0) (not (= 15 .cse4))) (or (not (= 10 .cse4)) .cse2 (= 10 .cse0)) (or .cse2 (= 16 .cse0) (not (= 16 .cse4))) (or (not (= 11 .cse1)) .cse2 (= 11 .cse3)) (or (not (= 12 .cse4)) (= 12 .cse0) .cse2) (or (not (= 13 .cse1)) (= 13 .cse0) .cse2) (or (= 19 .cse3) .cse2 (not (= 19 .cse1))) (or (= 14 .cse3) .cse2 (not (= 14 .cse4)))))) [2020-07-20 03:36:44,559 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 03:36:44,559 INFO L264 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: (let ((.cse8 (select |old(#memory_int)| |plus_#in~p.base|)) (.cse9 (select |#memory_int| plus_~p.base)) (.cse10 (select |#memory_int| |plus_#in~p.base|))) (let ((.cse6 (select .cse10 0)) (.cse1 (select .cse9 plus_~p.offset)) (.cse5 (select .cse8 0)) (.cse0 (select .cse10 |plus_#in~p.offset|)) (.cse7 (select .cse9 0)) (.cse2 (= 0 plus_~p.offset)) (.cse4 (select .cse8 |plus_#in~p.offset|)) (.cse3 (not (= 0 |plus_#in~p.offset|)))) (and (or (and (= 16 .cse0) (= 16 .cse1) .cse2) .cse3 (not (= 15 .cse4))) (or (not (= 11 .cse5)) (and (= 12 .cse1) (= 12 .cse0) .cse2) .cse3) (or .cse3 (and (= 17 .cse6) (= 17 .cse1) .cse2) (not (= 16 .cse4))) (or (not (= 13 .cse5)) (and (= 14 .cse6) (= 14 .cse7) .cse2) .cse3) (or (and (= 20 .cse1) (<= 18 .cse0) .cse2) .cse3 (not (= 19 .cse5))) (or (and (= 15 .cse7) .cse2 (= 15 .cse0)) .cse3 (not (= 14 .cse4))) (or (not (= 10 .cse4)) .cse3 (and (= 11 .cse1) .cse2 (= 11 .cse6))) (or (and (= 19 .cse6) (= 19 .cse1) .cse2) (not (= 18 .cse5)) .cse3) (or .cse3 (and (= 18 .cse0) (= 18 .cse7) .cse2) (not (= 17 .cse4))) (or (and (= 13 .cse0) (= 13 .cse7) .cse2) (not (= 12 .cse4)) .cse3)))) [2020-07-20 03:36:44,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 03:36:44 BoogieIcfgContainer [2020-07-20 03:36:44,564 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 03:36:44,566 INFO L168 Benchmark]: Toolchain (without parser) took 37600.00 ms. Allocated memory was 137.9 MB in the beginning and 435.7 MB in the end (delta: 297.8 MB). Free memory was 101.3 MB in the beginning and 233.4 MB in the end (delta: -132.0 MB). Peak memory consumption was 307.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:44,566 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 03:36:44,566 INFO L168 Benchmark]: CACSL2BoogieTranslator took 245.58 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:44,566 INFO L168 Benchmark]: Boogie Preprocessor took 112.84 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.4 MB in the beginning and 179.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:44,567 INFO L168 Benchmark]: RCFGBuilder took 288.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 165.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:44,567 INFO L168 Benchmark]: TraceAbstraction took 36947.29 ms. Allocated memory was 201.9 MB in the beginning and 435.7 MB in the end (delta: 233.8 MB). Free memory was 165.4 MB in the beginning and 233.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 307.1 MB. Max. memory is 7.1 GB. [2020-07-20 03:36:44,569 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 137.9 MB. Free memory is still 119.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 245.58 ms. Allocated memory is still 137.9 MB. Free memory was 100.9 MB in the beginning and 91.4 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.84 ms. Allocated memory was 137.9 MB in the beginning and 201.9 MB in the end (delta: 64.0 MB). Free memory was 91.4 MB in the beginning and 179.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 288.30 ms. Allocated memory is still 201.9 MB. Free memory was 179.4 MB in the beginning and 165.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36947.29 ms. Allocated memory was 201.9 MB in the beginning and 435.7 MB in the end (delta: 233.8 MB). Free memory was 165.4 MB in the beginning and 233.4 MB in the end (delta: -67.9 MB). Peak memory consumption was 307.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 16]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 35.4s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 17.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 224 SDtfs, 323 SDslu, 1363 SDs, 0 SdLazy, 11732 SolverSat, 515 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 963 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22352 ImplicationChecksByTransitivity, 21.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 51 PreInvPairs, 51 NumberOfFragments, 1083 HoareAnnotationTreeSize, 51 FomulaSimplifications, 57008 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1111 FormulaSimplificationTreeSizeReductionInter, 1.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 14.5s InterpolantComputationTime, 781 NumberOfCodeBlocks, 696 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 760 ConstructedInterpolants, 0 QuantifiedInterpolants, 213375 SizeOfPredicates, 391 NumberOfNonLiveVariables, 1915 ConjunctsInSsa, 1316 ConjunctsInUnsatCore, 21 InterpolantComputations, 1 PerfectInterpolantSequences, 206/1870 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...