/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 NUM_VARIABLES --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 01:27:01,262 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:27:01,265 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:27:01,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:27:01,278 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:27:01,279 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:27:01,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:27:01,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:27:01,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:27:01,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:27:01,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:27:01,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:27:01,287 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:27:01,288 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:27:01,289 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:27:01,290 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:27:01,291 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:27:01,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:27:01,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:27:01,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:27:01,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:27:01,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:27:01,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:27:01,299 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:27:01,302 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:27:01,309 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:27:01,310 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:27:01,311 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:27:01,311 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 01:27:01,326 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:27:01,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:27:01,328 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:27:01,328 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:27:01,328 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:27:01,328 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:27:01,329 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:27:01,329 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:27:01,329 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:27:01,329 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:27:01,329 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:27:01,330 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:27:01,330 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:27:01,330 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:27:01,330 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:27:01,330 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:27:01,331 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:27:01,331 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:27:01,331 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:27:01,331 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:27:01,331 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:27:01,332 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:27:01,332 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:27:01,332 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:27:01,332 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:27:01,333 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:27:01,333 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:27:01,333 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:27:01,333 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:27:01,333 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES 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 01:27:01,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:27:01,644 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:27:01,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:27:01,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:27:01,649 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:27:01,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 01:27:01,728 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ed06efb/4384bfa147004f41959794893cab7d31/FLAG805f12e3b [2020-07-20 01:27:02,163 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:27:02,164 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-with-pointer/simple-recursive.c [2020-07-20 01:27:02,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ed06efb/4384bfa147004f41959794893cab7d31/FLAG805f12e3b [2020-07-20 01:27:02,491 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19ed06efb/4384bfa147004f41959794893cab7d31 [2020-07-20 01:27:02,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:27:02,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:27:02,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:27:02,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:27:02,511 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:27:02,512 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,515 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18d09088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02, skipping insertion in model container [2020-07-20 01:27:02,516 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,523 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:27:02,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:27:02,763 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:27:02,777 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:27:02,795 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:27:02,812 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:27:02,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02 WrapperNode [2020-07-20 01:27:02,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:27:02,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:27:02,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:27:02,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:27:02,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,931 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,943 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (1/1) ... [2020-07-20 01:27:02,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:27:02,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:27:02,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:27:02,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:27:02,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (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 01:27:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:27:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:27:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure plus [2020-07-20 01:27:03,014 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-07-20 01:27:03,015 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:27:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:27:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-07-20 01:27:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure plus [2020-07-20 01:27:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:27:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:27:03,015 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:27:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:27:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-20 01:27:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:27:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:27:03,016 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:27:03,244 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:27:03,245 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 01:27:03,249 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:27:03 BoogieIcfgContainer [2020-07-20 01:27:03,249 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:27:03,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:27:03,251 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:27:03,254 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:27:03,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:27:02" (1/3) ... [2020-07-20 01:27:03,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca47c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:27:03, skipping insertion in model container [2020-07-20 01:27:03,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:27:02" (2/3) ... [2020-07-20 01:27:03,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ca47c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:27:03, skipping insertion in model container [2020-07-20 01:27:03,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:27:03" (3/3) ... [2020-07-20 01:27:03,258 INFO L109 eAbstractionObserver]: Analyzing ICFG simple-recursive.c [2020-07-20 01:27:03,269 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:27:03,276 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:27:03,292 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:27:03,355 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:27:03,356 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:27:03,356 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:27:03,356 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:27:03,356 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:27:03,357 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:27:03,357 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:27:03,357 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:27:03,394 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 01:27:03,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-20 01:27:03,403 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:03,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:03,405 INFO L427 AbstractCegarLoop]: === Iteration 1 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:03,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:03,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1703201428, now seen corresponding path program 1 times [2020-07-20 01:27:03,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:03,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112902293] [2020-07-20 01:27:03,440 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:03,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:03,706 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 01:27:03,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112902293] [2020-07-20 01:27:03,708 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:27:03,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-20 01:27:03,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599873715] [2020-07-20 01:27:03,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 01:27:03,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:03,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 01:27:03,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 01:27:03,734 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 6 states. [2020-07-20 01:27:03,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:03,927 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 01:27:03,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 01:27:03,930 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-07-20 01:27:03,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:03,940 INFO L225 Difference]: With dead ends: 39 [2020-07-20 01:27:03,940 INFO L226 Difference]: Without dead ends: 18 [2020-07-20 01:27:03,945 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 01:27:03,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-20 01:27:03,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-20 01:27:03,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 01:27:03,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-20 01:27:03,992 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 11 [2020-07-20 01:27:03,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:03,993 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-20 01:27:03,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 01:27:03,994 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-20 01:27:03,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-20 01:27:03,995 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:03,995 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:03,996 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:27:03,996 INFO L427 AbstractCegarLoop]: === Iteration 2 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:03,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:03,997 INFO L82 PathProgramCache]: Analyzing trace with hash 1207469216, now seen corresponding path program 1 times [2020-07-20 01:27:03,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:03,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344112211] [2020-07-20 01:27:03,998 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:04,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:04,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:04,220 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 01:27:04,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344112211] [2020-07-20 01:27:04,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837666677] [2020-07-20 01:27:04,224 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@641a2110 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:04,305 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@641a2110 issued 3 check-sat command(s) [2020-07-20 01:27:04,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:04,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 37 conjunts are in the unsatisfiable core [2020-07-20 01:27:04,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:04,377 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 01:27:04,378 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:04,384 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:04,384 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:04,385 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:04,418 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 01:27:04,419 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:04,426 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:04,426 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:04,427 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:04,506 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 01:27:04,508 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:04,513 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 01:27:04,514 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 01:27:04,515 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:04,537 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 01:27:04,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:04,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9] total 13 [2020-07-20 01:27:04,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [986714558] [2020-07-20 01:27:04,541 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-20 01:27:04,541 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:04,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-20 01:27:04,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-07-20 01:27:04,542 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 13 states. [2020-07-20 01:27:04,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:04,771 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-20 01:27:04,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 01:27:04,772 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2020-07-20 01:27:04,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:04,773 INFO L225 Difference]: With dead ends: 26 [2020-07-20 01:27:04,773 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 01:27:04,775 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 01:27:04,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 01:27:04,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-20 01:27:04,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-20 01:27:04,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-20 01:27:04,782 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-20 01:27:04,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:04,783 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-20 01:27:04,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-20 01:27:04,783 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-20 01:27:04,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 01:27:04,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:04,784 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:04,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-07-20 01:27:04,999 INFO L427 AbstractCegarLoop]: === Iteration 3 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:05,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:05,000 INFO L82 PathProgramCache]: Analyzing trace with hash 1866674708, now seen corresponding path program 2 times [2020-07-20 01:27:05,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:05,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1189373094] [2020-07-20 01:27:05,003 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:05,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:05,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:05,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:27:05,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1189373094] [2020-07-20 01:27:05,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [571130913] [2020-07-20 01:27:05,216 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@73b313e6 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 01:27:05,288 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@73b313e6 issued 3 check-sat command(s) [2020-07-20 01:27:05,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:05,291 WARN L261 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 58 conjunts are in the unsatisfiable core [2020-07-20 01:27:05,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:05,304 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 01:27:05,305 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,307 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:05,308 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,308 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:05,331 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 01:27:05,333 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,341 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:05,342 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,342 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:05,431 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 01:27:05,432 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,436 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:05,436 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,437 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:05,534 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 01:27:05,538 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:05,543 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 01:27:05,544 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 01:27:05,545 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:05,550 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 01:27:05,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:05,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13] total 21 [2020-07-20 01:27:05,551 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251785528] [2020-07-20 01:27:05,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-20 01:27:05,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:05,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-20 01:27:05,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-07-20 01:27:05,555 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 21 states. [2020-07-20 01:27:06,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:06,119 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-07-20 01:27:06,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 01:27:06,119 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 21 [2020-07-20 01:27:06,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:06,121 INFO L225 Difference]: With dead ends: 31 [2020-07-20 01:27:06,121 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 01:27:06,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=143, Invalid=913, Unknown=0, NotChecked=0, Total=1056 [2020-07-20 01:27:06,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 01:27:06,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-20 01:27:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 01:27:06,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-20 01:27:06,130 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-07-20 01:27:06,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:06,130 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-20 01:27:06,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-20 01:27:06,131 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-20 01:27:06,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-20 01:27:06,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:06,132 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:06,348 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:06,349 INFO L427 AbstractCegarLoop]: === Iteration 4 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:06,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:06,350 INFO L82 PathProgramCache]: Analyzing trace with hash 1116654880, now seen corresponding path program 3 times [2020-07-20 01:27:06,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:06,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073131699] [2020-07-20 01:27:06,352 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:06,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:06,641 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 01:27:06,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073131699] [2020-07-20 01:27:06,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1594579712] [2020-07-20 01:27:06,642 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46d3842 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:06,705 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@46d3842 issued 3 check-sat command(s) [2020-07-20 01:27:06,706 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:06,709 WARN L261 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 79 conjunts are in the unsatisfiable core [2020-07-20 01:27:06,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:06,720 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 01:27:06,721 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,723 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:06,723 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,723 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:06,732 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 01:27:06,733 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,735 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:06,736 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:06,824 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 01:27:06,825 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,828 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:06,829 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:06,928 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 01:27:06,929 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,933 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:06,934 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:06,934 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:07,020 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 01:27:07,021 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:07,022 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:07,023 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 01:27:07,023 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:07,024 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 01:27:07,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:07,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 29 [2020-07-20 01:27:07,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786363900] [2020-07-20 01:27:07,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-07-20 01:27:07,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:07,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-07-20 01:27:07,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2020-07-20 01:27:07,027 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 29 states. [2020-07-20 01:27:07,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:07,788 INFO L93 Difference]: Finished difference Result 36 states and 36 transitions. [2020-07-20 01:27:07,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 01:27:07,788 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 26 [2020-07-20 01:27:07,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:07,790 INFO L225 Difference]: With dead ends: 36 [2020-07-20 01:27:07,790 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 01:27:07,792 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 01:27:07,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 01:27:07,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-20 01:27:07,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-20 01:27:07,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-20 01:27:07,800 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-20 01:27:07,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:07,801 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-20 01:27:07,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-07-20 01:27:07,801 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-20 01:27:07,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 01:27:07,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:07,802 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:08,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:08,007 INFO L427 AbstractCegarLoop]: === Iteration 5 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:08,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:08,008 INFO L82 PathProgramCache]: Analyzing trace with hash 1506163092, now seen corresponding path program 4 times [2020-07-20 01:27:08,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:08,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718507291] [2020-07-20 01:27:08,009 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:08,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:08,384 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:27:08,384 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718507291] [2020-07-20 01:27:08,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689442486] [2020-07-20 01:27:08,385 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@912ca12 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 01:27:08,460 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@912ca12 issued 3 check-sat command(s) [2020-07-20 01:27:08,460 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:08,464 WARN L261 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 100 conjunts are in the unsatisfiable core [2020-07-20 01:27:08,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:08,474 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 01:27:08,475 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,476 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:08,477 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,477 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:08,491 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 01:27:08,492 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,497 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:08,497 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,498 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:08,592 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 01:27:08,593 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,595 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:08,596 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,596 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:08,697 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 01:27:08,698 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,700 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:08,700 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,700 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:08,823 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 01:27:08,824 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,829 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:08,829 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:08,941 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 01:27:08,942 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:08,944 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 01:27:08,945 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 01:27:08,945 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:08,949 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 01:27:08,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:08,949 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 37 [2020-07-20 01:27:08,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233000027] [2020-07-20 01:27:08,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-07-20 01:27:08,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:08,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-07-20 01:27:08,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=1200, Unknown=0, NotChecked=0, Total=1332 [2020-07-20 01:27:08,952 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 37 states. [2020-07-20 01:27:10,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:10,040 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-07-20 01:27:10,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-20 01:27:10,041 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 31 [2020-07-20 01:27:10,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:10,043 INFO L225 Difference]: With dead ends: 41 [2020-07-20 01:27:10,043 INFO L226 Difference]: Without dead ends: 38 [2020-07-20 01:27:10,046 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 01:27:10,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-20 01:27:10,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-07-20 01:27:10,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-20 01:27:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-07-20 01:27:10,054 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-07-20 01:27:10,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:10,055 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-07-20 01:27:10,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-07-20 01:27:10,055 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-07-20 01:27:10,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-20 01:27:10,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:10,057 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:10,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:10,271 INFO L427 AbstractCegarLoop]: === Iteration 6 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:10,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:10,272 INFO L82 PathProgramCache]: Analyzing trace with hash 1044673952, now seen corresponding path program 5 times [2020-07-20 01:27:10,272 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:10,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609601304] [2020-07-20 01:27:10,273 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:10,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:10,715 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 01:27:10,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [609601304] [2020-07-20 01:27:10,716 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1776289129] [2020-07-20 01:27:10,716 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6162a5e3 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:10,815 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@6162a5e3 issued 3 check-sat command(s) [2020-07-20 01:27:10,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:10,819 WARN L261 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 121 conjunts are in the unsatisfiable core [2020-07-20 01:27:10,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:10,829 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 01:27:10,829 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:10,831 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:10,832 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:10,832 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:10,840 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 01:27:10,841 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:10,843 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:10,843 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:10,843 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:10,937 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 01:27:10,938 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:10,940 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:10,940 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:10,940 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:11,038 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 01:27:11,039 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,041 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:11,041 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,041 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:11,155 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 01:27:11,156 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,158 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:11,158 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,158 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:11,284 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 01:27:11,286 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,293 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:11,293 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,294 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:11,421 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 01:27:11,426 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:11,427 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:11,428 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 01:27:11,428 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:11,431 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 01:27:11,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:11,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 45 [2020-07-20 01:27:11,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625814481] [2020-07-20 01:27:11,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 45 states [2020-07-20 01:27:11,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:11,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2020-07-20 01:27:11,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=1797, Unknown=0, NotChecked=0, Total=1980 [2020-07-20 01:27:11,438 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 45 states. [2020-07-20 01:27:12,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:12,834 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2020-07-20 01:27:12,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-20 01:27:12,834 INFO L78 Accepts]: Start accepts. Automaton has 45 states. Word has length 36 [2020-07-20 01:27:12,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:12,836 INFO L225 Difference]: With dead ends: 46 [2020-07-20 01:27:12,836 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 01:27:12,838 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 01:27:12,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 01:27:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-20 01:27:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 01:27:12,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-07-20 01:27:12,849 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-07-20 01:27:12,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:12,850 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-07-20 01:27:12,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 45 states. [2020-07-20 01:27:12,850 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-20 01:27:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-20 01:27:12,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:12,851 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:13,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-07-20 01:27:13,061 INFO L427 AbstractCegarLoop]: === Iteration 7 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:13,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:13,062 INFO L82 PathProgramCache]: Analyzing trace with hash -272244460, now seen corresponding path program 6 times [2020-07-20 01:27:13,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:13,063 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305284231] [2020-07-20 01:27:13,063 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:13,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:13,582 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:27:13,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305284231] [2020-07-20 01:27:13,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [966438527] [2020-07-20 01:27:13,584 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b2dbf7d 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 01:27:13,680 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5b2dbf7d issued 3 check-sat command(s) [2020-07-20 01:27:13,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:13,688 WARN L261 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 142 conjunts are in the unsatisfiable core [2020-07-20 01:27:13,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:13,704 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 01:27:13,705 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,707 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:13,707 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,707 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:13,724 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 01:27:13,725 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,730 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:13,731 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,731 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:13,836 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 01:27:13,837 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,840 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:13,840 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,840 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:13,949 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 01:27:13,950 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,951 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:13,952 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:13,952 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:14,078 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 01:27:14,079 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,081 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:14,082 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,082 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:14,216 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 01:27:14,217 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,219 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:14,219 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,220 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:14,364 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 01:27:14,365 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,367 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:14,367 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,368 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:14,505 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 01:27:14,507 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:14,510 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 01:27:14,511 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 01:27:14,511 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:14,516 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 01:27:14,517 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:14,517 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29] total 53 [2020-07-20 01:27:14,517 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487233687] [2020-07-20 01:27:14,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 53 states [2020-07-20 01:27:14,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:14,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2020-07-20 01:27:14,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=242, Invalid=2514, Unknown=0, NotChecked=0, Total=2756 [2020-07-20 01:27:14,521 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 53 states. [2020-07-20 01:27:15,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:15,968 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-07-20 01:27:15,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-20 01:27:15,968 INFO L78 Accepts]: Start accepts. Automaton has 53 states. Word has length 41 [2020-07-20 01:27:15,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:15,970 INFO L225 Difference]: With dead ends: 51 [2020-07-20 01:27:15,970 INFO L226 Difference]: Without dead ends: 48 [2020-07-20 01:27:15,976 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 01:27:15,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-20 01:27:15,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-20 01:27:15,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-20 01:27:15,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-20 01:27:15,993 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-07-20 01:27:15,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:15,993 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-20 01:27:15,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 53 states. [2020-07-20 01:27:15,994 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-20 01:27:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-20 01:27:15,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:15,998 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:16,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:16,213 INFO L427 AbstractCegarLoop]: === Iteration 8 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:16,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:16,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1667333664, now seen corresponding path program 7 times [2020-07-20 01:27:16,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:16,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111461018] [2020-07-20 01:27:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:16,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:16,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:16,903 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 01:27:16,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111461018] [2020-07-20 01:27:16,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [409045415] [2020-07-20 01:27:16,904 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c3ea5ea No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:17,034 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@2c3ea5ea issued 3 check-sat command(s) [2020-07-20 01:27:17,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:17,041 WARN L261 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 163 conjunts are in the unsatisfiable core [2020-07-20 01:27:17,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:17,051 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 01:27:17,052 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,059 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,059 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,060 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:17,068 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 01:27:17,069 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,072 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,073 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,073 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:17,178 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 01:27:17,179 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,182 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,182 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,182 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:17,303 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 01:27:17,304 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,312 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,312 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,313 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:17,447 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 01:27:17,448 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,451 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,451 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,451 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:17,582 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 01:27:17,582 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,585 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,585 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,585 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:17,728 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 01:27:17,729 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,730 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,731 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,731 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:17,899 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 01:27:17,899 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,901 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:17,902 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:17,902 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:18,048 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 01:27:18,050 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:18,052 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 01:27:18,053 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 01:27:18,053 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:18,061 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 01:27:18,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:18,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 33] total 61 [2020-07-20 01:27:18,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478042029] [2020-07-20 01:27:18,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 61 states [2020-07-20 01:27:18,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:18,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2020-07-20 01:27:18,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=309, Invalid=3351, Unknown=0, NotChecked=0, Total=3660 [2020-07-20 01:27:18,065 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 61 states. [2020-07-20 01:27:20,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:20,284 INFO L93 Difference]: Finished difference Result 56 states and 56 transitions. [2020-07-20 01:27:20,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-20 01:27:20,286 INFO L78 Accepts]: Start accepts. Automaton has 61 states. Word has length 46 [2020-07-20 01:27:20,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:20,287 INFO L225 Difference]: With dead ends: 56 [2020-07-20 01:27:20,287 INFO L226 Difference]: Without dead ends: 53 [2020-07-20 01:27:20,290 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 01:27:20,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-20 01:27:20,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-07-20 01:27:20,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-20 01:27:20,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-07-20 01:27:20,301 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-07-20 01:27:20,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:20,302 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-07-20 01:27:20,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 61 states. [2020-07-20 01:27:20,302 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-07-20 01:27:20,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-20 01:27:20,304 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:20,304 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:20,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:20,514 INFO L427 AbstractCegarLoop]: === Iteration 9 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:20,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:20,514 INFO L82 PathProgramCache]: Analyzing trace with hash -168154988, now seen corresponding path program 8 times [2020-07-20 01:27:20,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:20,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915432138] [2020-07-20 01:27:20,516 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:20,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:21,477 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:27:21,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915432138] [2020-07-20 01:27:21,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220762864] [2020-07-20 01:27:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f1ef2b2 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 01:27:21,679 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@f1ef2b2 issued 3 check-sat command(s) [2020-07-20 01:27:21,680 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:21,688 WARN L261 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 184 conjunts are in the unsatisfiable core [2020-07-20 01:27:21,700 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:21,716 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 01:27:21,716 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:21,719 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:21,719 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:21,720 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:21,731 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 01:27:21,732 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:21,736 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:21,736 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:21,736 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:21,877 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 01:27:21,878 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:21,880 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:21,880 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:21,881 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:22,038 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 01:27:22,038 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,041 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:22,041 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,042 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:22,198 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 01:27:22,199 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,202 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:22,202 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,202 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:22,342 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 01:27:22,343 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,350 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:22,350 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,351 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:22,513 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 01:27:22,514 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,520 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:22,520 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,521 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:22,690 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 01:27:22,691 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,695 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:22,695 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,695 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:22,896 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 01:27:22,897 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,904 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:22,904 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:22,905 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:23,064 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 01:27:23,065 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:23,068 INFO L624 ElimStorePlain]: treesize reduction 6, result has 14.3 percent of original size [2020-07-20 01:27:23,068 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 01:27:23,068 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:22, output treesize:1 [2020-07-20 01:27:23,074 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 01:27:23,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:23,076 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 69 [2020-07-20 01:27:23,079 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67068979] [2020-07-20 01:27:23,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 69 states [2020-07-20 01:27:23,082 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:23,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 69 interpolants. [2020-07-20 01:27:23,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=384, Invalid=4308, Unknown=0, NotChecked=0, Total=4692 [2020-07-20 01:27:23,084 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 69 states. [2020-07-20 01:27:26,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:26,277 INFO L93 Difference]: Finished difference Result 61 states and 61 transitions. [2020-07-20 01:27:26,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 01:27:26,278 INFO L78 Accepts]: Start accepts. Automaton has 69 states. Word has length 51 [2020-07-20 01:27:26,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:26,281 INFO L225 Difference]: With dead ends: 61 [2020-07-20 01:27:26,281 INFO L226 Difference]: Without dead ends: 58 [2020-07-20 01:27:26,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3672 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=917, Invalid=11293, Unknown=0, NotChecked=0, Total=12210 [2020-07-20 01:27:26,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-20 01:27:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-20 01:27:26,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-20 01:27:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-07-20 01:27:26,294 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-07-20 01:27:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:26,294 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-07-20 01:27:26,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 69 states. [2020-07-20 01:27:26,294 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-07-20 01:27:26,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-20 01:27:26,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:26,295 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:26,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-07-20 01:27:26,510 INFO L427 AbstractCegarLoop]: === Iteration 10 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:26,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:26,511 INFO L82 PathProgramCache]: Analyzing trace with hash 539879072, now seen corresponding path program 9 times [2020-07-20 01:27:26,512 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:26,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107099823] [2020-07-20 01:27:26,512 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:27,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:27,335 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 01:27:27,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107099823] [2020-07-20 01:27:27,335 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642887295] [2020-07-20 01:27:27,336 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f4fb3c8 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:27,474 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5f4fb3c8 issued 3 check-sat command(s) [2020-07-20 01:27:27,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:27,481 WARN L261 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 202 conjunts are in the unsatisfiable core [2020-07-20 01:27:27,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:27,500 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 01:27:27,501 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,505 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:27,505 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,505 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:7 [2020-07-20 01:27:27,510 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 01:27:27,511 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,513 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:27,513 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,513 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:27,638 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 01:27:27,639 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,642 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:27,643 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,643 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:27,771 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 01:27:27,772 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,774 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:27,774 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:27,935 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 01:27:27,936 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,943 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:27,944 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:27,944 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:28,100 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 01:27:28,101 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,109 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:28,109 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,109 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:28,283 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 01:27:28,284 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,285 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:28,286 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,286 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:28,465 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 01:27:28,466 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,474 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:28,475 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,475 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:28,667 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 01:27:28,667 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,669 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:28,669 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,669 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:28,871 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 01:27:28,872 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,873 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:28,874 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,874 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:7 [2020-07-20 01:27:28,981 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 01:27:28,982 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:28,984 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:28,984 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 01:27:28,984 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:15, output treesize:3 [2020-07-20 01:27:28,991 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 01:27:28,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:28,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 41] total 76 [2020-07-20 01:27:28,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237751009] [2020-07-20 01:27:28,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-07-20 01:27:28,995 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:28,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-07-20 01:27:28,999 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=464, Invalid=5236, Unknown=0, NotChecked=0, Total=5700 [2020-07-20 01:27:28,999 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 76 states. [2020-07-20 01:27:32,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:32,858 INFO L93 Difference]: Finished difference Result 66 states and 66 transitions. [2020-07-20 01:27:32,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-20 01:27:32,858 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 56 [2020-07-20 01:27:32,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:32,860 INFO L225 Difference]: With dead ends: 66 [2020-07-20 01:27:32,860 INFO L226 Difference]: Without dead ends: 63 [2020-07-20 01:27:32,862 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4571 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=1098, Invalid=13908, Unknown=0, NotChecked=0, Total=15006 [2020-07-20 01:27:32,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-20 01:27:32,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-07-20 01:27:32,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-20 01:27:32,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-07-20 01:27:32,872 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-07-20 01:27:32,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:32,873 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-07-20 01:27:32,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-07-20 01:27:32,873 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-07-20 01:27:32,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-20 01:27:32,874 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:27:32,874 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:27:33,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:33,090 INFO L427 AbstractCegarLoop]: === Iteration 11 === [fooErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:27:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:27:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1424289772, now seen corresponding path program 10 times [2020-07-20 01:27:33,091 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:27:33,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677844434] [2020-07-20 01:27:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@29ba6a6c [2020-07-20 01:27:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:34,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:27:34,324 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 206 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:27:34,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677844434] [2020-07-20 01:27:34,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338575237] [2020-07-20 01:27:34,325 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c3e15b0 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 01:27:34,510 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@c3e15b0 issued 3 check-sat command(s) [2020-07-20 01:27:34,510 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:27:34,517 WARN L261 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 230 conjunts are in the unsatisfiable core [2020-07-20 01:27:34,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:27:34,531 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 01:27:34,531 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:34,535 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:34,535 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:34,536 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-07-20 01:27:34,728 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:34,729 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 01:27:34,730 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:34,738 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:34,739 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:34,739 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:34,945 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:34,945 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 01:27:34,946 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:34,954 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:34,954 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:34,954 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:35,175 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:35,176 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 01:27:35,177 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,187 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:35,187 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,188 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:35,423 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:35,423 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 01:27:35,424 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,433 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:35,433 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,434 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:35,687 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:35,687 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 01:27:35,688 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,697 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:35,697 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,697 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:35,968 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:35,968 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 01:27:35,969 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,977 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:35,977 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:35,977 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:36,264 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:36,265 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 01:27:36,265 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:36,273 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:36,274 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:36,274 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:36,578 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:36,579 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 01:27:36,579 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:36,588 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:36,589 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:36,589 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:36,921 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:36,922 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 01:27:36,923 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:36,931 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:36,932 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:36,932 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:37,266 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:37,267 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 01:27:37,267 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:37,275 INFO L624 ElimStorePlain]: treesize reduction 11, result has 50.0 percent of original size [2020-07-20 01:27:37,276 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:27:37,276 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:28, output treesize:11 [2020-07-20 01:27:37,542 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 01:27:37,542 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:27:37,543 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:27:37,544 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 01:27:37,544 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:3 [2020-07-20 01:27:37,553 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 01:27:37,553 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 01:27:37,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 46] total 91 [2020-07-20 01:27:37,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3401671] [2020-07-20 01:27:37,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 91 states [2020-07-20 01:27:37,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:27:37,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 91 interpolants. [2020-07-20 01:27:37,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=570, Invalid=7620, Unknown=0, NotChecked=0, Total=8190 [2020-07-20 01:27:37,555 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 91 states. [2020-07-20 01:27:39,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:27:39,498 INFO L93 Difference]: Finished difference Result 68 states and 69 transitions. [2020-07-20 01:27:39,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-07-20 01:27:39,499 INFO L78 Accepts]: Start accepts. Automaton has 91 states. Word has length 61 [2020-07-20 01:27:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:27:39,500 INFO L225 Difference]: With dead ends: 68 [2020-07-20 01:27:39,500 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:27:39,502 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 01:27:39,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:27:39,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:27:39,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:27:39,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:27:39,503 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-07-20 01:27:39,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:27:39,504 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:27:39,504 INFO L480 AbstractCegarLoop]: Interpolant automaton has 91 states. [2020-07-20 01:27:39,504 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:27:39,504 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:27:39,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:27:39,717 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:27:40,178 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 91 [2020-07-20 01:27:40,497 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 94 [2020-07-20 01:27:40,717 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 64 [2020-07-20 01:27:40,968 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 69 [2020-07-20 01:27:40,972 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:27:40,973 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 01:27:40,973 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:27:40,973 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 9 18) no Hoare annotation was computed. [2020-07-20 01:27:40,974 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 01:27:40,974 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-07-20 01:27:40,974 INFO L268 CegarLoopResult]: For program point fooErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2020-07-20 01:27:40,974 INFO L268 CegarLoopResult]: For program point L12(lines 12 17) no Hoare annotation was computed. [2020-07-20 01:27:40,974 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 01:27:40,975 INFO L268 CegarLoopResult]: For program point L10(lines 10 17) no Hoare annotation was computed. [2020-07-20 01:27:40,975 INFO L268 CegarLoopResult]: For program point L10-1(lines 9 18) no Hoare annotation was computed. [2020-07-20 01:27:40,975 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:27:40,975 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:27:40,975 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:27:40,975 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:27:40,975 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 20 26) the Hoare annotation is: (= |#valid| |old(#valid)|) [2020-07-20 01:27:40,976 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 20 26) no Hoare annotation was computed. [2020-07-20 01:27:40,976 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 01:27:40,976 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 20 26) no Hoare annotation was computed. [2020-07-20 01:27:40,976 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-07-20 01:27:40,976 INFO L268 CegarLoopResult]: For program point plusFINAL(lines 4 7) no Hoare annotation was computed. [2020-07-20 01:27:40,977 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 01:27:40,977 INFO L268 CegarLoopResult]: For program point plusEXIT(lines 4 7) no Hoare annotation was computed. [2020-07-20 01:27:40,977 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 01:27:40,984 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:27:40 BoogieIcfgContainer [2020-07-20 01:27:40,984 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:27:40,986 INFO L168 Benchmark]: Toolchain (without parser) took 38481.20 ms. Allocated memory was 145.2 MB in the beginning and 454.0 MB in the end (delta: 308.8 MB). Free memory was 103.1 MB in the beginning and 118.8 MB in the end (delta: -15.7 MB). Peak memory consumption was 293.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:40,986 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 01:27:40,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.64 ms. Allocated memory is still 145.2 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:40,987 INFO L168 Benchmark]: Boogie Preprocessor took 139.19 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 181.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:40,988 INFO L168 Benchmark]: RCFGBuilder took 295.63 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:40,988 INFO L168 Benchmark]: TraceAbstraction took 37733.51 ms. Allocated memory was 202.9 MB in the beginning and 454.0 MB in the end (delta: 251.1 MB). Free memory was 165.9 MB in the beginning and 118.8 MB in the end (delta: 47.1 MB). Peak memory consumption was 298.2 MB. Max. memory is 7.1 GB. [2020-07-20 01:27:40,991 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 145.2 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.64 ms. Allocated memory is still 145.2 MB. Free memory was 102.7 MB in the beginning and 93.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 139.19 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 93.0 MB in the beginning and 181.0 MB in the end (delta: -88.0 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 295.63 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 166.6 MB in the end (delta: 14.5 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 37733.51 ms. Allocated memory was 202.9 MB in the beginning and 454.0 MB in the end (delta: 251.1 MB). Free memory was 165.9 MB in the beginning and 118.8 MB in the end (delta: 47.1 MB). Peak memory consumption was 298.2 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: 36.3s, OverallIterations: 11, TraceHistogramMax: 11, AutomataDifference: 16.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 224 SDtfs, 323 SDslu, 1363 SDs, 0 SdLazy, 11732 SolverSat, 515 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 963 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 768 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22352 ImplicationChecksByTransitivity, 21.5s 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, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 15.2s 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...