/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/loops/matrix-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:48:11,956 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:48:11,959 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:48:11,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:48:11,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:48:11,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:48:11,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:48:11,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:48:12,000 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:48:12,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:48:12,006 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:48:12,009 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:48:12,010 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:48:12,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:48:12,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:48:12,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:48:12,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:48:12,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:48:12,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:48:12,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:48:12,033 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:48:12,036 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:48:12,038 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:48:12,038 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:48:12,041 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 01:48:12,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:48:12,053 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:48:12,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:48:12,055 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 01:48:12,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:48:12,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:48:12,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:48:12,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:48:12,095 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:48:12,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:48:12,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:48:12,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:48:12,095 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:48:12,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:48:12,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:48:12,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:48:12,098 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:48:12,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:48:12,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:48:12,099 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:48:12,099 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:48:12,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:48:12,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:48:12,100 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:48:12,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:48:12,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:48:12,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:48:12,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:48:12,101 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:48:12,101 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:48:12,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:48:12,102 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:48:12,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:48:12,102 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 01:48:12,411 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:48:12,425 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:48:12,429 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:48:12,431 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:48:12,431 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:48:12,432 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/matrix-1.c [2020-07-20 01:48:12,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f553c2d96/d2939bb86b454145af40ba5954f79dd5/FLAG5089edb10 [2020-07-20 01:48:12,964 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:48:12,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/matrix-1.c [2020-07-20 01:48:12,972 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f553c2d96/d2939bb86b454145af40ba5954f79dd5/FLAG5089edb10 [2020-07-20 01:48:13,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f553c2d96/d2939bb86b454145af40ba5954f79dd5 [2020-07-20 01:48:13,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:48:13,387 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:48:13,388 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:48:13,388 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:48:13,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:48:13,393 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,396 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11b33ed2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13, skipping insertion in model container [2020-07-20 01:48:13,396 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,404 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:48:13,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:48:13,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:48:13,615 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:48:13,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:48:13,660 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:48:13,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13 WrapperNode [2020-07-20 01:48:13,660 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:48:13,661 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:48:13,661 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:48:13,661 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:48:13,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,761 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,761 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,769 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,774 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,776 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (1/1) ... [2020-07-20 01:48:13,778 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:48:13,779 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:48:13,779 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:48:13,779 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:48:13,780 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (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 01:48:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:48:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:48:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 01:48:13,852 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:48:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:48:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 01:48:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:48:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:48:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 01:48:13,853 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 01:48:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 01:48:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 01:48:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:48:13,854 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:48:14,121 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:48:14,121 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-20 01:48:14,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:48:14 BoogieIcfgContainer [2020-07-20 01:48:14,127 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:48:14,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:48:14,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:48:14,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:48:14,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:48:13" (1/3) ... [2020-07-20 01:48:14,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f7e8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:48:14, skipping insertion in model container [2020-07-20 01:48:14,134 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:48:13" (2/3) ... [2020-07-20 01:48:14,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33f7e8ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:48:14, skipping insertion in model container [2020-07-20 01:48:14,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:48:14" (3/3) ... [2020-07-20 01:48:14,137 INFO L109 eAbstractionObserver]: Analyzing ICFG matrix-1.c [2020-07-20 01:48:14,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:48:14,159 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:48:14,177 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:48:14,206 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:48:14,206 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:48:14,206 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:48:14,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:48:14,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:48:14,207 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:48:14,207 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:48:14,207 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:48:14,228 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-07-20 01:48:14,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 01:48:14,236 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:48:14,237 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:48:14,237 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:48:14,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:48:14,245 INFO L82 PathProgramCache]: Analyzing trace with hash 1330517862, now seen corresponding path program 1 times [2020-07-20 01:48:14,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:48:14,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811862921] [2020-07-20 01:48:14,258 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ae1eff [2020-07-20 01:48:14,399 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:48:14,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1786563657] [2020-07-20 01:48:14,400 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a577b1d 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 01:48:14,483 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1a577b1d issued 3 check-sat command(s) [2020-07-20 01:48:14,484 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:48:14,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 01:48:14,491 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:48:14,508 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 01:48:14,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811862921] [2020-07-20 01:48:14,509 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:48:14,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1786563657] [2020-07-20 01:48:14,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:48:14,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 01:48:14,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731696344] [2020-07-20 01:48:14,519 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 01:48:14,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:48:14,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 01:48:14,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 01:48:14,532 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-07-20 01:48:14,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:48:14,554 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2020-07-20 01:48:14,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 01:48:14,556 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-07-20 01:48:14,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:48:14,565 INFO L225 Difference]: With dead ends: 42 [2020-07-20 01:48:14,565 INFO L226 Difference]: Without dead ends: 17 [2020-07-20 01:48:14,570 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 01:48:14,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-07-20 01:48:14,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-07-20 01:48:14,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-20 01:48:14,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-07-20 01:48:14,611 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-07-20 01:48:14,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:48:14,611 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-07-20 01:48:14,612 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 01:48:14,612 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-07-20 01:48:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-20 01:48:14,613 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:48:14,613 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:48:14,814 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-07-20 01:48:14,815 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:48:14,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:48:14,816 INFO L82 PathProgramCache]: Analyzing trace with hash 672047389, now seen corresponding path program 1 times [2020-07-20 01:48:14,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:48:14,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628805535] [2020-07-20 01:48:14,820 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ae1eff [2020-07-20 01:48:14,839 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:48:14,840 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1595925094] [2020-07-20 01:48:14,840 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3354364f No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:14,889 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3354364f issued 1 check-sat command(s) [2020-07-20 01:48:14,889 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:48:14,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 01:48:14,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:48:14,921 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 01:48:14,921 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628805535] [2020-07-20 01:48:14,922 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:48:14,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595925094] [2020-07-20 01:48:14,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:48:14,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:48:14,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210182870] [2020-07-20 01:48:14,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:48:14,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:48:14,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:48:14,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:48:14,926 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 3 states. [2020-07-20 01:48:14,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:48:14,959 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-07-20 01:48:14,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:48:14,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-07-20 01:48:14,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:48:14,961 INFO L225 Difference]: With dead ends: 28 [2020-07-20 01:48:14,962 INFO L226 Difference]: Without dead ends: 22 [2020-07-20 01:48:14,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:48:14,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-07-20 01:48:14,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-07-20 01:48:14,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-07-20 01:48:14,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-07-20 01:48:14,973 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 12 [2020-07-20 01:48:14,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:48:14,973 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-07-20 01:48:14,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:48:14,974 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-07-20 01:48:14,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-20 01:48:14,975 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:48:14,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:48:15,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:15,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:48:15,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:48:15,194 INFO L82 PathProgramCache]: Analyzing trace with hash -830834987, now seen corresponding path program 1 times [2020-07-20 01:48:15,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:48:15,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493141987] [2020-07-20 01:48:15,196 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ae1eff [2020-07-20 01:48:15,206 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:48:15,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1032881930] [2020-07-20 01:48:15,207 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b2d6ac1 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 01:48:15,266 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@3b2d6ac1 issued 1 check-sat command(s) [2020-07-20 01:48:15,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:48:15,268 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 01:48:15,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:48:15,308 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:48:15,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493141987] [2020-07-20 01:48:15,308 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:48:15,309 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1032881930] [2020-07-20 01:48:15,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:48:15,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:48:15,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732856024] [2020-07-20 01:48:15,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:48:15,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:48:15,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:48:15,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:48:15,311 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-07-20 01:48:15,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:48:15,385 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2020-07-20 01:48:15,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:48:15,387 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-07-20 01:48:15,387 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:48:15,388 INFO L225 Difference]: With dead ends: 32 [2020-07-20 01:48:15,388 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 01:48:15,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:48:15,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 01:48:15,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-07-20 01:48:15,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-07-20 01:48:15,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-07-20 01:48:15,399 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 15 [2020-07-20 01:48:15,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:48:15,400 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-07-20 01:48:15,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:48:15,400 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-07-20 01:48:15,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 01:48:15,403 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:48:15,404 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:48:15,604 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:15,605 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:48:15,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:48:15,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1529445450, now seen corresponding path program 1 times [2020-07-20 01:48:15,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:48:15,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844063730] [2020-07-20 01:48:15,607 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ae1eff [2020-07-20 01:48:15,617 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:48:15,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1534817315] [2020-07-20 01:48:15,618 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a44043 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:15,699 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@5a44043 issued 4 check-sat command(s) [2020-07-20 01:48:15,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:48:15,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 01:48:15,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:48:15,792 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-07-20 01:48:15,793 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:48:16,206 WARN L193 SmtUtils]: Spent 410.00 ms on a formula simplification. DAG size of input: 114 DAG size of output: 33 [2020-07-20 01:48:16,209 INFO L624 ElimStorePlain]: treesize reduction 372, result has 9.7 percent of original size [2020-07-20 01:48:16,224 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 26 treesize of output 22 [2020-07-20 01:48:16,225 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-20 01:48:16,242 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:48:16,242 INFO L512 ElimStorePlain]: Eliminatee v_prenex_1 vanished before elimination [2020-07-20 01:48:16,242 INFO L512 ElimStorePlain]: Eliminatee |v_#memory_int_7| vanished before elimination [2020-07-20 01:48:16,242 INFO L512 ElimStorePlain]: Eliminatee v_prenex_11 vanished before elimination [2020-07-20 01:48:16,243 INFO L512 ElimStorePlain]: Eliminatee v_prenex_3 vanished before elimination [2020-07-20 01:48:16,243 INFO L512 ElimStorePlain]: Eliminatee v_prenex_5 vanished before elimination [2020-07-20 01:48:16,243 INFO L512 ElimStorePlain]: Eliminatee v_prenex_7 vanished before elimination [2020-07-20 01:48:16,245 INFO L544 ElimStorePlain]: Start of recursive call 1: 8 dim-0 vars, 8 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:48:16,245 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 16 variables, input treesize:473, output treesize:14 [2020-07-20 01:48:16,272 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:48:16,343 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:48:16,344 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 21 treesize of output 21 [2020-07-20 01:48:16,347 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:48:16,348 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:48:16,351 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2020-07-20 01:48:16,367 INFO L624 ElimStorePlain]: treesize reduction 16, result has 36.0 percent of original size [2020-07-20 01:48:16,369 INFO L544 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-20 01:48:16,370 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:31, output treesize:3 [2020-07-20 01:48:16,385 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:48:16,412 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 01:48:16,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844063730] [2020-07-20 01:48:16,413 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:48:16,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1534817315] [2020-07-20 01:48:16,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:48:16,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-20 01:48:16,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [256128995] [2020-07-20 01:48:16,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 01:48:16,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:48:16,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 01:48:16,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-20 01:48:16,416 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 8 states. [2020-07-20 01:48:16,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:48:16,640 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-07-20 01:48:16,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 01:48:16,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-07-20 01:48:16,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:48:16,641 INFO L225 Difference]: With dead ends: 35 [2020-07-20 01:48:16,642 INFO L226 Difference]: Without dead ends: 29 [2020-07-20 01:48:16,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-07-20 01:48:16,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-07-20 01:48:16,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 27. [2020-07-20 01:48:16,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-20 01:48:16,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2020-07-20 01:48:16,650 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 18 [2020-07-20 01:48:16,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:48:16,651 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2020-07-20 01:48:16,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 01:48:16,651 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2020-07-20 01:48:16,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-20 01:48:16,652 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:48:16,652 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:48:16,865 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:16,866 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:48:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:48:16,867 INFO L82 PathProgramCache]: Analyzing trace with hash -1922472460, now seen corresponding path program 1 times [2020-07-20 01:48:16,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:48:16,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594144450] [2020-07-20 01:48:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ae1eff [2020-07-20 01:48:16,880 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:48:16,880 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [573574899] [2020-07-20 01:48:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1262bec0 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 01:48:16,926 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1262bec0 issued 4 check-sat command(s) [2020-07-20 01:48:16,927 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:48:16,928 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-20 01:48:16,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:48:16,967 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 01:48:16,968 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:48:16,973 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:48:16,974 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 01:48:16,974 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:19, output treesize:7 [2020-07-20 01:48:16,994 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 17 treesize of output 9 [2020-07-20 01:48:16,995 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-20 01:48:16,997 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-20 01:48:16,998 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 01:48:16,998 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:17, output treesize:5 [2020-07-20 01:48:17,008 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 01:48:17,029 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 01:48:17,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594144450] [2020-07-20 01:48:17,030 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:48:17,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [573574899] [2020-07-20 01:48:17,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:48:17,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-20 01:48:17,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193932311] [2020-07-20 01:48:17,031 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 01:48:17,031 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:48:17,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 01:48:17,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-20 01:48:17,032 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 9 states. [2020-07-20 01:48:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:48:17,252 INFO L93 Difference]: Finished difference Result 39 states and 45 transitions. [2020-07-20 01:48:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-20 01:48:17,252 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 18 [2020-07-20 01:48:17,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:48:17,253 INFO L225 Difference]: With dead ends: 39 [2020-07-20 01:48:17,253 INFO L226 Difference]: Without dead ends: 33 [2020-07-20 01:48:17,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2020-07-20 01:48:17,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-20 01:48:17,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-07-20 01:48:17,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-20 01:48:17,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-07-20 01:48:17,261 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 18 [2020-07-20 01:48:17,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:48:17,261 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-07-20 01:48:17,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 01:48:17,261 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-07-20 01:48:17,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-20 01:48:17,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:48:17,262 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:48:17,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:17,477 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:48:17,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:48:17,478 INFO L82 PathProgramCache]: Analyzing trace with hash 239488911, now seen corresponding path program 2 times [2020-07-20 01:48:17,479 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:48:17,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094872146] [2020-07-20 01:48:17,480 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@23ae1eff [2020-07-20 01:48:17,489 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-07-20 01:48:17,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1477250698] [2020-07-20 01:48:17,490 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1d30443c No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:17,560 INFO L228 tOrderPrioritization]: Assert order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@1d30443c issued 3 check-sat command(s) [2020-07-20 01:48:17,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 01:48:17,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 01:48:17,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 01:48:17,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:48:17,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094872146] [2020-07-20 01:48:17,586 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-07-20 01:48:17,586 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1477250698] [2020-07-20 01:48:17,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 01:48:17,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-07-20 01:48:17,587 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622607442] [2020-07-20 01:48:17,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:48:17,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:48:17,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:48:17,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:48:17,589 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 4 states. [2020-07-20 01:48:17,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:48:17,608 INFO L93 Difference]: Finished difference Result 25 states and 29 transitions. [2020-07-20 01:48:17,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:48:17,609 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-20 01:48:17,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:48:17,610 INFO L225 Difference]: With dead ends: 25 [2020-07-20 01:48:17,610 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:48:17,611 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:48:17,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:48:17,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:48:17,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:48:17,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:48:17,612 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-07-20 01:48:17,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:48:17,613 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:48:17,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:48:17,613 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:48:17,613 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:48:17,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-20 01:48:17,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:48:18,106 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:48:18,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:48:18,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:48:18,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:48:18,107 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:48:18,107 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:48:18,107 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:48:18,108 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 31) no Hoare annotation was computed. [2020-07-20 01:48:18,108 INFO L268 CegarLoopResult]: For program point L19-2(lines 19 26) no Hoare annotation was computed. [2020-07-20 01:48:18,108 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse1 (= 1 main_~N_LIN~0))) (or (and .cse0 (= 1 main_~j~0) .cse1 (exists ((main_~k~0 Int)) (and (< (mod main_~k~0 4294967296) 1) (<= (mod main_~k~0 4294967296) 2147483647) (<= (select (select |#memory_int| |main_~#matriz~0.base|) (+ (* (mod main_~k~0 4294967296) 4) |main_~#matriz~0.offset|)) main_~maior~0)))) (and .cse0 (= 0 main_~j~0) .cse1))) [2020-07-20 01:48:18,108 INFO L268 CegarLoopResult]: For program point L19-4(lines 19 26) no Hoare annotation was computed. [2020-07-20 01:48:18,108 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 31) no Hoare annotation was computed. [2020-07-20 01:48:18,108 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 31) the Hoare annotation is: true [2020-07-20 01:48:18,108 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= |main_#t~mem6| main_~maior~0) (= 1 main_~N_COL~0) (= 1 main_~N_LIN~0) (exists ((main_~k~0 Int)) (and (< (mod main_~k~0 4294967296) 1) (<= (mod main_~k~0 4294967296) 2147483647) (<= (select (select |#memory_int| |main_~#matriz~0.base|) (+ (* (mod main_~k~0 4294967296) 4) |main_~#matriz~0.offset|)) main_~maior~0)))) [2020-07-20 01:48:18,109 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-07-20 01:48:18,109 INFO L268 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-07-20 01:48:18,109 INFO L268 CegarLoopResult]: For program point L20-2(lines 20 26) no Hoare annotation was computed. [2020-07-20 01:48:18,109 INFO L264 CegarLoopResult]: At program point L20-3(lines 20 26) the Hoare annotation is: (let ((.cse0 (= 1 main_~N_COL~0)) (.cse1 (= 0 main_~j~0)) (.cse2 (= 1 main_~N_LIN~0))) (or (and (= 0 main_~k~0) .cse0 .cse1 .cse2) (and (exists ((main_~k~0 Int)) (and (<= (mod main_~k~0 4294967296) 2147483647) (< (mod main_~k~0 4294967296) 1) (<= (select (select |#memory_int| |main_~#matriz~0.base|) (+ (* (mod main_~k~0 4294967296) 4) |main_~#matriz~0.offset|)) main_~maior~0))) .cse0 .cse1 .cse2))) [2020-07-20 01:48:18,109 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-20 01:48:18,109 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-20 01:48:18,109 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-20 01:48:18,109 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-20 01:48:18,110 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-20 01:48:18,110 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-20 01:48:18,118 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,119 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,120 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,122 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 01:48:18,126 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,127 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,127 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,127 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 01:48:18,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,129 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,130 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,130 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 01:48:18,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,131 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,131 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 01:48:18,134 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:48:18 BoogieIcfgContainer [2020-07-20 01:48:18,134 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:48:18,136 INFO L168 Benchmark]: Toolchain (without parser) took 4750.85 ms. Allocated memory was 138.9 MB in the beginning and 244.3 MB in the end (delta: 105.4 MB). Free memory was 102.0 MB in the beginning and 205.9 MB in the end (delta: -103.9 MB). Peak memory consumption was 115.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:48:18,137 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:48:18,137 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.04 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-20 01:48:18,138 INFO L168 Benchmark]: Boogie Preprocessor took 117.42 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.1 MB in the beginning and 180.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:48:18,139 INFO L168 Benchmark]: RCFGBuilder took 348.63 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 165.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. [2020-07-20 01:48:18,140 INFO L168 Benchmark]: TraceAbstraction took 4005.19 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 165.4 MB in the beginning and 205.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:48:18,143 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 138.9 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 273.04 ms. Allocated memory is still 138.9 MB. Free memory was 101.8 MB in the beginning and 91.1 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.42 ms. Allocated memory was 138.9 MB in the beginning and 203.4 MB in the end (delta: 64.5 MB). Free memory was 91.1 MB in the beginning and 180.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.63 ms. Allocated memory is still 203.4 MB. Free memory was 180.5 MB in the beginning and 165.4 MB in the end (delta: 15.1 MB). Peak memory consumption was 15.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4005.19 ms. Allocated memory was 203.4 MB in the beginning and 244.3 MB in the end (delta: 40.9 MB). Free memory was 165.4 MB in the beginning and 205.9 MB in the end (delta: -40.5 MB). Peak memory consumption was 114.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant [2020-07-20 01:48:18,152 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,153 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,153 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 01:48:18,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,154 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,155 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((0 == k && 1 == N_COL) && 0 == j) && 1 == N_LIN) || ((((\exists main_~k~0 : int :: (main_~k~0 % 4294967296 <= 2147483647 && main_~k~0 % 4294967296 < 1) && unknown-#memory_int-unknown[matriz][main_~k~0 % 4294967296 * 4 + matriz] <= maior) && 1 == N_COL) && 0 == j) && 1 == N_LIN) - InvariantResult [Line: 19]: Loop Invariant [2020-07-20 01:48:18,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,155 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,156 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-20 01:48:18,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,156 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,157 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~k~0,QUANTIFIED] [2020-07-20 01:48:18,157 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((1 == N_COL && 1 == j) && 1 == N_LIN) && (\exists main_~k~0 : int :: (main_~k~0 % 4294967296 < 1 && main_~k~0 % 4294967296 <= 2147483647) && unknown-#memory_int-unknown[matriz][main_~k~0 % 4294967296 * 4 + matriz] <= maior)) || ((1 == N_COL && 0 == j) && 1 == N_LIN) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 42 SDslu, 154 SDs, 0 SdLazy, 195 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 16 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 135 HoareAnnotationTreeSize, 13 FomulaSimplifications, 15 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 62 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 99 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 93 ConstructedInterpolants, 5 QuantifiedInterpolants, 6485 SizeOfPredicates, 25 NumberOfNonLiveVariables, 336 ConjunctsInSsa, 48 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/17 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...