/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:32:12,087 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:32:12,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:32:12,108 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:32:12,108 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:32:12,110 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:32:12,113 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:32:12,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:32:12,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:32:12,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:32:12,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:32:12,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:32:12,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:32:12,125 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:32:12,127 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:32:12,129 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:32:12,130 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:32:12,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:32:12,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:32:12,143 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:32:12,145 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:32:12,147 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:32:12,148 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:32:12,150 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:32:12,153 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:32:12,164 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:32:12,165 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:32:12,167 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:32:12,168 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:32:12,186 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:32:12,186 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:32:12,188 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:32:12,189 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:32:12,189 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:32:12,189 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:32:12,189 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:32:12,190 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:32:12,190 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:32:12,190 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:32:12,190 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:32:12,190 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:32:12,191 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:32:12,191 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:32:12,191 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:32:12,191 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:32:12,191 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:32:12,192 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:32:12,192 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:32:12,192 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:32:12,192 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:32:12,192 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:32:12,193 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:32:12,193 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:32:12,193 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:32:12,194 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:32:12,194 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:12,194 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:32:12,194 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:32:12,194 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-20 11:32:12,563 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:32:12,583 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:32:12,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:32:12,591 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:32:12,593 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:32:12,595 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-07-20 11:32:12,708 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d64df322/114f4bcb76fc41a8bba6bd218a698a1c/FLAG1f150c52d [2020-07-20 11:32:13,480 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:32:13,481 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label05.c [2020-07-20 11:32:13,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d64df322/114f4bcb76fc41a8bba6bd218a698a1c/FLAG1f150c52d [2020-07-20 11:32:13,708 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9d64df322/114f4bcb76fc41a8bba6bd218a698a1c [2020-07-20 11:32:13,726 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:32:13,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:32:13,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:32:13,734 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:32:13,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:32:13,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:32:13" (1/1) ... [2020-07-20 11:32:13,748 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3883adbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:13, skipping insertion in model container [2020-07-20 11:32:13,749 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:32:13" (1/1) ... [2020-07-20 11:32:13,761 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:32:13,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:32:14,410 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:32:14,427 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:32:14,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:32:14,724 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:32:14,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14 WrapperNode [2020-07-20 11:32:14,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:32:14,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:32:14,727 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:32:14,727 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:32:14,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,748 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,774 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... [2020-07-20 11:32:14,889 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:32:14,890 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:32:14,890 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:32:14,890 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:32:14,892 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:32:15,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:32:15,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:32:15,022 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:32:15,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:32:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:32:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:32:15,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:32:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:32:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:32:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:32:15,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:32:16,664 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:32:16,664 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:32:16,673 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:32:16 BoogieIcfgContainer [2020-07-20 11:32:16,673 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:32:16,675 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:32:16,675 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:32:16,681 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:32:16,681 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:32:13" (1/3) ... [2020-07-20 11:32:16,682 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a13c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:32:16, skipping insertion in model container [2020-07-20 11:32:16,682 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:32:14" (2/3) ... [2020-07-20 11:32:16,683 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a13c4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:32:16, skipping insertion in model container [2020-07-20 11:32:16,683 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:32:16" (3/3) ... [2020-07-20 11:32:16,686 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label05.c [2020-07-20 11:32:16,701 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:32:16,713 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:32:16,739 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:32:16,791 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:32:16,792 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:32:16,793 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:32:16,793 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:32:16,793 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:32:16,794 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:32:16,794 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:32:16,794 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:32:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 11:32:16,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-07-20 11:32:16,863 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:16,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:16,866 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:16,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:16,879 INFO L82 PathProgramCache]: Analyzing trace with hash -1904695938, now seen corresponding path program 1 times [2020-07-20 11:32:16,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:16,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276875547] [2020-07-20 11:32:16,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:17,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 281 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:17,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:17,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:17,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:17,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276875547] [2020-07-20 11:32:17,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:17,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:17,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187746438] [2020-07-20 11:32:17,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:17,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:17,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:17,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:17,266 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 11:32:18,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:18,687 INFO L93 Difference]: Finished difference Result 572 states and 963 transitions. [2020-07-20 11:32:18,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:18,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 100 [2020-07-20 11:32:18,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:18,724 INFO L225 Difference]: With dead ends: 572 [2020-07-20 11:32:18,724 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 11:32:18,736 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 98 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 11:32:18,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 11:32:18,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 11:32:18,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 11:32:18,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 11:32:18,831 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 100 [2020-07-20 11:32:18,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:18,832 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 11:32:18,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:18,833 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 11:32:18,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-07-20 11:32:18,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:18,841 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:19,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:19,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:19,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:19,051 INFO L82 PathProgramCache]: Analyzing trace with hash 1236531093, now seen corresponding path program 1 times [2020-07-20 11:32:19,052 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:19,052 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [942186959] [2020-07-20 11:32:19,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:19,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:19,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 347 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:19,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:19,245 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:19,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:19,246 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [942186959] [2020-07-20 11:32:19,246 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:19,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:32:19,247 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125984723] [2020-07-20 11:32:19,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:32:19,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:19,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:32:19,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:32:19,253 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 5 states. [2020-07-20 11:32:20,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:20,558 INFO L93 Difference]: Finished difference Result 842 states and 1218 transitions. [2020-07-20 11:32:20,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:20,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 110 [2020-07-20 11:32:20,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:20,571 INFO L225 Difference]: With dead ends: 842 [2020-07-20 11:32:20,572 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 11:32:20,575 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:32:20,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 11:32:20,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 11:32:20,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 11:32:20,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2020-07-20 11:32:20,653 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 110 [2020-07-20 11:32:20,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:20,654 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2020-07-20 11:32:20,654 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:32:20,654 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2020-07-20 11:32:20,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-20 11:32:20,660 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:20,660 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:20,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:20,876 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:20,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:20,877 INFO L82 PathProgramCache]: Analyzing trace with hash 235879383, now seen corresponding path program 1 times [2020-07-20 11:32:20,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:20,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [83527580] [2020-07-20 11:32:20,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:21,008 INFO L263 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:32:21,013 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:21,053 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:21,054 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:21,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [83527580] [2020-07-20 11:32:21,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:21,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:21,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933041341] [2020-07-20 11:32:21,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:21,057 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:21,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:21,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:21,058 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2020-07-20 11:32:21,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:21,990 INFO L93 Difference]: Finished difference Result 1652 states and 2385 transitions. [2020-07-20 11:32:21,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:21,993 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-07-20 11:32:21,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:22,004 INFO L225 Difference]: With dead ends: 1652 [2020-07-20 11:32:22,005 INFO L226 Difference]: Without dead ends: 1102 [2020-07-20 11:32:22,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 109 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 11:32:22,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-07-20 11:32:22,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1102. [2020-07-20 11:32:22,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1102 states. [2020-07-20 11:32:22,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1102 states to 1102 states and 1504 transitions. [2020-07-20 11:32:22,078 INFO L78 Accepts]: Start accepts. Automaton has 1102 states and 1504 transitions. Word has length 111 [2020-07-20 11:32:22,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:22,079 INFO L479 AbstractCegarLoop]: Abstraction has 1102 states and 1504 transitions. [2020-07-20 11:32:22,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:22,080 INFO L276 IsEmpty]: Start isEmpty. Operand 1102 states and 1504 transitions. [2020-07-20 11:32:22,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 11:32:22,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:22,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:22,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:22,302 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:22,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:22,303 INFO L82 PathProgramCache]: Analyzing trace with hash -2022552526, now seen corresponding path program 1 times [2020-07-20 11:32:22,303 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:22,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253323498] [2020-07-20 11:32:22,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:22,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:22,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 406 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:22,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:22,472 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:22,472 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:22,606 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:22,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253323498] [2020-07-20 11:32:22,608 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:22,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 11:32:22,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816201280] [2020-07-20 11:32:22,610 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:32:22,610 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:22,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:32:22,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:32:22,611 INFO L87 Difference]: Start difference. First operand 1102 states and 1504 transitions. Second operand 8 states. [2020-07-20 11:32:25,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:25,423 INFO L93 Difference]: Finished difference Result 4220 states and 6124 transitions. [2020-07-20 11:32:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:32:25,425 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 119 [2020-07-20 11:32:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:25,467 INFO L225 Difference]: With dead ends: 4220 [2020-07-20 11:32:25,468 INFO L226 Difference]: Without dead ends: 3124 [2020-07-20 11:32:25,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:32:25,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3124 states. [2020-07-20 11:32:25,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3124 to 2349. [2020-07-20 11:32:25,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2349 states. [2020-07-20 11:32:25,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2349 states to 2349 states and 3071 transitions. [2020-07-20 11:32:25,706 INFO L78 Accepts]: Start accepts. Automaton has 2349 states and 3071 transitions. Word has length 119 [2020-07-20 11:32:25,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:25,710 INFO L479 AbstractCegarLoop]: Abstraction has 2349 states and 3071 transitions. [2020-07-20 11:32:25,710 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:32:25,710 INFO L276 IsEmpty]: Start isEmpty. Operand 2349 states and 3071 transitions. [2020-07-20 11:32:25,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-20 11:32:25,722 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:25,723 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:25,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:25,937 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash 308691738, now seen corresponding path program 1 times [2020-07-20 11:32:25,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:25,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118197457] [2020-07-20 11:32:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:26,047 INFO L263 TraceCheckSpWp]: Trace formula consists of 423 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:26,052 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:26,102 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:26,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:26,207 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 34 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:26,208 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118197457] [2020-07-20 11:32:26,208 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:26,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:32:26,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936379095] [2020-07-20 11:32:26,209 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:32:26,210 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:26,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:32:26,211 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:32:26,211 INFO L87 Difference]: Start difference. First operand 2349 states and 3071 transitions. Second operand 7 states. [2020-07-20 11:32:28,671 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:28,671 INFO L93 Difference]: Finished difference Result 7590 states and 10616 transitions. [2020-07-20 11:32:28,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:32:28,673 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-07-20 11:32:28,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:28,726 INFO L225 Difference]: With dead ends: 7590 [2020-07-20 11:32:28,726 INFO L226 Difference]: Without dead ends: 5251 [2020-07-20 11:32:28,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:28,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2020-07-20 11:32:28,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4567. [2020-07-20 11:32:28,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4567 states. [2020-07-20 11:32:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4567 states to 4567 states and 5929 transitions. [2020-07-20 11:32:29,104 INFO L78 Accepts]: Start accepts. Automaton has 4567 states and 5929 transitions. Word has length 131 [2020-07-20 11:32:29,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:29,105 INFO L479 AbstractCegarLoop]: Abstraction has 4567 states and 5929 transitions. [2020-07-20 11:32:29,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:32:29,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4567 states and 5929 transitions. [2020-07-20 11:32:29,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-20 11:32:29,122 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:29,123 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:29,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:29,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:29,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:29,340 INFO L82 PathProgramCache]: Analyzing trace with hash -720996718, now seen corresponding path program 1 times [2020-07-20 11:32:29,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:29,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462968893] [2020-07-20 11:32:29,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:29,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:29,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:29,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:29,505 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:32:29,506 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:29,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462968893] [2020-07-20 11:32:29,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:29,507 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:29,507 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683419975] [2020-07-20 11:32:29,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:29,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:29,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:29,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:29,509 INFO L87 Difference]: Start difference. First operand 4567 states and 5929 transitions. Second operand 3 states. [2020-07-20 11:32:30,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:30,432 INFO L93 Difference]: Finished difference Result 11993 states and 15911 transitions. [2020-07-20 11:32:30,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:30,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 135 [2020-07-20 11:32:30,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:30,491 INFO L225 Difference]: With dead ends: 11993 [2020-07-20 11:32:30,491 INFO L226 Difference]: Without dead ends: 7436 [2020-07-20 11:32:30,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 133 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 11:32:30,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7436 states. [2020-07-20 11:32:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7436 to 5665. [2020-07-20 11:32:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5665 states. [2020-07-20 11:32:30,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5665 states to 5665 states and 7367 transitions. [2020-07-20 11:32:30,769 INFO L78 Accepts]: Start accepts. Automaton has 5665 states and 7367 transitions. Word has length 135 [2020-07-20 11:32:30,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:30,770 INFO L479 AbstractCegarLoop]: Abstraction has 5665 states and 7367 transitions. [2020-07-20 11:32:30,770 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:30,771 INFO L276 IsEmpty]: Start isEmpty. Operand 5665 states and 7367 transitions. [2020-07-20 11:32:30,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-20 11:32:30,791 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:30,792 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:31,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:31,007 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:31,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:31,008 INFO L82 PathProgramCache]: Analyzing trace with hash -676972618, now seen corresponding path program 1 times [2020-07-20 11:32:31,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:31,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [531630533] [2020-07-20 11:32:31,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:31,129 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:32:31,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:31,269 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:31,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:31,352 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:32:31,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [531630533] [2020-07-20 11:32:31,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:31,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:32:31,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225005335] [2020-07-20 11:32:31,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:32:31,356 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:31,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:32:31,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:32:31,357 INFO L87 Difference]: Start difference. First operand 5665 states and 7367 transitions. Second operand 7 states. [2020-07-20 11:32:32,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:32,533 INFO L93 Difference]: Finished difference Result 10413 states and 13551 transitions. [2020-07-20 11:32:32,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:32,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-07-20 11:32:32,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:32,576 INFO L225 Difference]: With dead ends: 10413 [2020-07-20 11:32:32,577 INFO L226 Difference]: Without dead ends: 6245 [2020-07-20 11:32:32,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 279 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:32,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6245 states. [2020-07-20 11:32:32,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6245 to 5669. [2020-07-20 11:32:32,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5669 states. [2020-07-20 11:32:32,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5669 states to 5669 states and 7057 transitions. [2020-07-20 11:32:32,819 INFO L78 Accepts]: Start accepts. Automaton has 5669 states and 7057 transitions. Word has length 142 [2020-07-20 11:32:32,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:32,820 INFO L479 AbstractCegarLoop]: Abstraction has 5669 states and 7057 transitions. [2020-07-20 11:32:32,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:32:32,820 INFO L276 IsEmpty]: Start isEmpty. Operand 5669 states and 7057 transitions. [2020-07-20 11:32:32,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-07-20 11:32:32,840 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:32,841 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:33,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:33,055 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:33,057 INFO L82 PathProgramCache]: Analyzing trace with hash 809347390, now seen corresponding path program 1 times [2020-07-20 11:32:33,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:33,059 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953309418] [2020-07-20 11:32:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:33,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:33,391 INFO L263 TraceCheckSpWp]: Trace formula consists of 428 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:32:33,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:33,459 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 24 proven. 27 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 11:32:33,459 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:33,557 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 49 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 11:32:33,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953309418] [2020-07-20 11:32:33,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:33,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-07-20 11:32:33,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991992391] [2020-07-20 11:32:33,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:32:33,561 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:33,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:32:33,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:32:33,562 INFO L87 Difference]: Start difference. First operand 5669 states and 7057 transitions. Second operand 5 states. [2020-07-20 11:32:34,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:34,478 INFO L93 Difference]: Finished difference Result 5677 states and 7068 transitions. [2020-07-20 11:32:34,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 11:32:34,478 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 146 [2020-07-20 11:32:34,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:34,512 INFO L225 Difference]: With dead ends: 5677 [2020-07-20 11:32:34,513 INFO L226 Difference]: Without dead ends: 5675 [2020-07-20 11:32:34,517 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 286 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:32:34,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5675 states. [2020-07-20 11:32:34,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5675 to 5387. [2020-07-20 11:32:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5387 states. [2020-07-20 11:32:34,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5387 states to 5387 states and 6705 transitions. [2020-07-20 11:32:34,702 INFO L78 Accepts]: Start accepts. Automaton has 5387 states and 6705 transitions. Word has length 146 [2020-07-20 11:32:34,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:34,703 INFO L479 AbstractCegarLoop]: Abstraction has 5387 states and 6705 transitions. [2020-07-20 11:32:34,703 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:32:34,703 INFO L276 IsEmpty]: Start isEmpty. Operand 5387 states and 6705 transitions. [2020-07-20 11:32:34,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-07-20 11:32:34,724 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:34,734 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:34,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:34,948 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:34,949 INFO L82 PathProgramCache]: Analyzing trace with hash -742331683, now seen corresponding path program 1 times [2020-07-20 11:32:34,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:34,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464641112] [2020-07-20 11:32:34,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:35,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 491 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:35,098 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:35,165 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:32:35,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:35,434 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 74 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:32:35,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464641112] [2020-07-20 11:32:35,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:35,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:32:35,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509018442] [2020-07-20 11:32:35,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:32:35,439 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:35,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:32:35,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:32:35,441 INFO L87 Difference]: Start difference. First operand 5387 states and 6705 transitions. Second operand 6 states. [2020-07-20 11:32:36,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:36,630 INFO L93 Difference]: Finished difference Result 9692 states and 12174 transitions. [2020-07-20 11:32:36,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:32:36,631 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-07-20 11:32:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:36,661 INFO L225 Difference]: With dead ends: 9692 [2020-07-20 11:32:36,661 INFO L226 Difference]: Without dead ends: 6096 [2020-07-20 11:32:36,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 298 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:36,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6096 states. [2020-07-20 11:32:36,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6096 to 5808. [2020-07-20 11:32:36,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-07-20 11:32:36,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7020 transitions. [2020-07-20 11:32:36,843 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7020 transitions. Word has length 151 [2020-07-20 11:32:36,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:36,844 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 7020 transitions. [2020-07-20 11:32:36,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:32:36,844 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7020 transitions. [2020-07-20 11:32:36,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-07-20 11:32:36,866 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:36,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:37,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:37,079 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:37,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:37,081 INFO L82 PathProgramCache]: Analyzing trace with hash 1695161737, now seen corresponding path program 1 times [2020-07-20 11:32:37,081 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:37,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300313347] [2020-07-20 11:32:37,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:37,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:37,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:32:37,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:37,256 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-07-20 11:32:37,256 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:32:37,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300313347] [2020-07-20 11:32:37,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:32:37,257 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:32:37,257 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209913127] [2020-07-20 11:32:37,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:32:37,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:37,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:32:37,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:32:37,260 INFO L87 Difference]: Start difference. First operand 5808 states and 7020 transitions. Second operand 3 states. [2020-07-20 11:32:38,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:38,005 INFO L93 Difference]: Finished difference Result 5810 states and 7021 transitions. [2020-07-20 11:32:38,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:32:38,014 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 161 [2020-07-20 11:32:38,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:38,039 INFO L225 Difference]: With dead ends: 5810 [2020-07-20 11:32:38,040 INFO L226 Difference]: Without dead ends: 5808 [2020-07-20 11:32:38,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 160 GetRequests, 159 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 11:32:38,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5808 states. [2020-07-20 11:32:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5808 to 5808. [2020-07-20 11:32:38,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5808 states. [2020-07-20 11:32:38,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5808 states to 5808 states and 7019 transitions. [2020-07-20 11:32:38,197 INFO L78 Accepts]: Start accepts. Automaton has 5808 states and 7019 transitions. Word has length 161 [2020-07-20 11:32:38,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:38,197 INFO L479 AbstractCegarLoop]: Abstraction has 5808 states and 7019 transitions. [2020-07-20 11:32:38,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:32:38,198 INFO L276 IsEmpty]: Start isEmpty. Operand 5808 states and 7019 transitions. [2020-07-20 11:32:38,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-20 11:32:38,225 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:32:38,225 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:32:38,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:38,441 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:32:38,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:32:38,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1628827276, now seen corresponding path program 1 times [2020-07-20 11:32:38,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:32:38,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750605934] [2020-07-20 11:32:38,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:38,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:32:38,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 604 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:32:38,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:32:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 134 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-07-20 11:32:38,677 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:32:38,811 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 142 proven. 16 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-20 11:32:38,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750605934] [2020-07-20 11:32:38,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:32:38,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 11:32:38,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065725922] [2020-07-20 11:32:38,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 11:32:38,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:32:38,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 11:32:38,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 11:32:38,825 INFO L87 Difference]: Start difference. First operand 5808 states and 7019 transitions. Second operand 7 states. [2020-07-20 11:32:40,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:32:40,978 INFO L93 Difference]: Finished difference Result 9081 states and 11033 transitions. [2020-07-20 11:32:40,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:32:40,980 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-07-20 11:32:40,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:32:40,981 INFO L225 Difference]: With dead ends: 9081 [2020-07-20 11:32:40,981 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:32:41,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 431 GetRequests, 424 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 11:32:41,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:32:41,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:32:41,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:32:41,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:32:41,015 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 214 [2020-07-20 11:32:41,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:32:41,015 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:32:41,015 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 11:32:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:32:41,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:32:41,231 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:32:41,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:32:43,073 WARN L193 SmtUtils]: Spent 881.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 143 [2020-07-20 11:32:43,838 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification. DAG size of input: 256 DAG size of output: 143 [2020-07-20 11:32:47,363 WARN L193 SmtUtils]: Spent 3.40 s on a formula simplification. DAG size of input: 225 DAG size of output: 112 [2020-07-20 11:32:48,493 WARN L193 SmtUtils]: Spent 1.11 s on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-07-20 11:32:49,517 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 149 DAG size of output: 64 [2020-07-20 11:32:49,522 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:32:49,522 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a21~0 |old(~a21~0)|)) [2020-07-20 11:32:49,522 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,523 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,524 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 11:32:49,524 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 11:32:49,524 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 11:32:49,524 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 11:32:49,525 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 11:32:49,525 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 11:32:49,525 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 11:32:49,525 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 11:32:49,525 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 11:32:49,525 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 11:32:49,526 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,526 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,526 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,526 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,526 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,526 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,527 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 11:32:49,527 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 11:32:49,527 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 11:32:49,527 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 11:32:49,527 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 11:32:49,527 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 11:32:49,528 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 11:32:49,528 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 11:32:49,528 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 11:32:49,528 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 11:32:49,528 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 11:32:49,528 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 458) no Hoare annotation was computed. [2020-07-20 11:32:49,529 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 11:32:49,529 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 11:32:49,529 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 11:32:49,529 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 11:32:49,529 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,529 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,530 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,530 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,530 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,530 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 11:32:49,530 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 11:32:49,530 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,531 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 11:32:49,532 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 11:32:49,533 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 11:32:49,534 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 11:32:49,535 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 11:32:49,536 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 11:32:49,537 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 11:32:49,538 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 11:32:49,538 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 11:32:49,538 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 11:32:49,538 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 11:32:49,538 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 11:32:49,538 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 11:32:49,539 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,539 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,539 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,539 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,539 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,540 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 11:32:49,541 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 11:32:49,541 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 11:32:49,541 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 11:32:49,542 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 11:32:49,542 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 11:32:49,542 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 11:32:49,542 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 11:32:49,542 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,542 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 11:32:49,543 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 11:32:49,544 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 11:32:49,544 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 11:32:49,544 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 11:32:49,544 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 11:32:49,545 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 11:32:49,545 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 11:32:49,547 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse0 (not (= 1 |old(~a20~0)|))) (.cse8 (not (<= |old(~a8~0)| 13)))) (let ((.cse19 (or .cse0 .cse8)) (.cse20 (not (<= |old(~a16~0)| 5))) (.cse21 (not (< |old(~a8~0)| 15)))) (let ((.cse25 (<= ~a16~0 5)) (.cse27 (< ~a8~0 15)) (.cse11 (<= ~a8~0 |old(~a8~0)|)) (.cse12 (<= ~a16~0 |old(~a16~0)|)) (.cse13 (<= ~a8~0 13)) (.cse18 (<= ~a17~0 0)) (.cse3 (= 1 ~a20~0)) (.cse14 (= ~a21~0 |old(~a21~0)|)) (.cse26 (and .cse19 (or .cse0 .cse20 .cse21))) (.cse5 (not (<= |old(~a17~0)| 0)))) (let ((.cse9 (not (<= |old(~a16~0)| 4))) (.cse7 (and (or .cse26 .cse5) (or .cse20 .cse21 .cse5))) (.cse23 (= ~a7~0 |old(~a7~0)|)) (.cse15 (and (or (and .cse11 .cse12 .cse18 .cse25 .cse27) (and .cse11 .cse12 .cse13 .cse18 .cse3)) .cse14)) (.cse24 (<= 15 ~a8~0)) (.cse6 (not (<= |old(~a21~0)| 0))) (.cse10 (not (= 1 |old(~a7~0)|))) (.cse16 (= 1 ~a7~0)) (.cse17 (<= |old(~a16~0)| ~a16~0)) (.cse22 (not (<= 5 |old(~a16~0)|))) (.cse1 (not (<= 15 |old(~a8~0)|))) (.cse2 (not (<= |old(~a7~0)| 0))) (.cse4 (not (= 1 |old(~a21~0)|)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or (and (or .cse6 .cse7) (or .cse6 .cse8 .cse9)) .cse10 (and (or (and .cse11 .cse12 .cse13 .cse14 (<= ~a16~0 4)) .cse15) .cse16 .cse17)) (or .cse18 (and .cse19 (or .cse20 .cse21)) .cse4 .cse22 .cse5) (or .cse11 .cse0 .cse6 .cse10 .cse8) (or .cse1 .cse2 (and .cse11 .cse12 .cse23 .cse17 .cse24 .cse14) .cse4) (or .cse1 .cse10 (and .cse11 .cse12 .cse16 .cse17 .cse18 .cse24 .cse14) .cse9 .cse4 .cse5) (or .cse0 .cse1 .cse2 .cse3 .cse22 .cse4) (or (and (or (and (or .cse0 .cse2 .cse8) (or .cse2 .cse20)) .cse4) (or .cse0 .cse8 .cse9 .cse4) (or .cse7 .cse4)) (and .cse23 .cse17 (or (and .cse12 .cse11 (<= ~a7~0 0) .cse25 .cse14) (and .cse11 .cse12 .cse13 .cse3 .cse14) .cse15))) (or .cse1 .cse10 .cse20 (and .cse11 .cse16 .cse18 .cse25 .cse24 (<= 5 ~a16~0) .cse14) .cse22 .cse4 .cse5) (or .cse6 .cse10 .cse26 (and .cse16 (or (and .cse25 .cse27 .cse3) (and .cse12 .cse13 .cse3)) .cse17 .cse14) .cse22) (or .cse1 .cse18 .cse2 .cse4 .cse5)))))) [2020-07-20 11:32:49,547 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 11:32:49,547 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,548 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 11:32:49,549 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,550 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 11:32:49,551 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 11:32:49,552 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 11:32:49,553 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 11:32:49,553 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 11:32:49,553 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 11:32:49,553 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,553 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,554 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 11:32:49,555 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 11:32:49,556 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 11:32:49,557 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 11:32:49,557 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 11:32:49,557 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 11:32:49,557 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 11:32:49,557 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 11:32:49,558 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:32:49,558 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a21~0) (= 1 ~a20~0)) [2020-07-20 11:32:49,558 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:32:49,558 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:32:49,558 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0) (= ~a21~0 |old(~a21~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|)) (not (= 1 |old(~a21~0)|))) [2020-07-20 11:32:49,558 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:32:49,559 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse7 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse4 (< ~a8~0 15)) (.cse10 (= 1 ~a20~0))) (let ((.cse1 (<= ~a17~0 0)) (.cse0 (= 1 ~a7~0)) (.cse6 (<= ~a21~0 0)) (.cse5 (or (and .cse7 .cse10) (and .cse2 .cse4 .cse10))) (.cse9 (<= ~a7~0 0)) (.cse3 (= 1 ~a21~0)) (.cse8 (<= ~a16~0 4))) (or (not (<= |old(~a7~0)| 0)) (and .cse0 .cse1 .cse2 .cse3) (and (or (and .cse1 .cse2 .cse4) (and .cse1 .cse5)) .cse3) (and .cse0 (or (and .cse6 .cse1 .cse2 .cse4) (and .cse7 .cse6 .cse8))) (not (<= 5 |old(~a16~0)|)) (and (or (and .cse9 .cse2) (and .cse7 .cse9 .cse10)) .cse3) (and .cse0 .cse6 .cse5 (<= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse9 (<= 15 ~a8~0) .cse3) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a21~0)|)) (and .cse7 .cse3 .cse10 .cse8)))) [2020-07-20 11:32:49,559 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 11:32:49,559 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 11:32:49,559 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse7 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse4 (< ~a8~0 15)) (.cse10 (= 1 ~a20~0))) (let ((.cse1 (<= ~a17~0 0)) (.cse0 (= 1 ~a7~0)) (.cse6 (<= ~a21~0 0)) (.cse5 (or (and .cse7 .cse10) (and .cse2 .cse4 .cse10))) (.cse9 (<= ~a7~0 0)) (.cse3 (= 1 ~a21~0)) (.cse8 (<= ~a16~0 4))) (or (not (<= |old(~a7~0)| 0)) (and .cse0 .cse1 .cse2 .cse3) (and (or (and .cse1 .cse2 .cse4) (and .cse1 .cse5)) .cse3) (and .cse0 (or (and .cse6 .cse1 .cse2 .cse4) (and .cse7 .cse6 .cse8))) (not (<= 5 |old(~a16~0)|)) (and (or (and .cse9 .cse2) (and .cse7 .cse9 .cse10)) .cse3) (and .cse0 .cse6 .cse5 (<= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse9 (<= 15 ~a8~0) .cse3) (not (<= |old(~a16~0)| 5)) (not (= 1 |old(~a21~0)|)) (and .cse7 .cse3 .cse10 .cse8)))) [2020-07-20 11:32:49,560 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:32:49,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:32:49 BoogieIcfgContainer [2020-07-20 11:32:49,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:32:49,631 INFO L168 Benchmark]: Toolchain (without parser) took 35901.38 ms. Allocated memory was 143.7 MB in the beginning and 644.9 MB in the end (delta: 501.2 MB). Free memory was 99.6 MB in the beginning and 419.9 MB in the end (delta: -320.3 MB). Peak memory consumption was 537.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:49,632 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:32:49,635 INFO L168 Benchmark]: CACSL2BoogieTranslator took 992.45 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 99.2 MB in the beginning and 171.6 MB in the end (delta: -72.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:49,636 INFO L168 Benchmark]: Boogie Preprocessor took 162.54 ms. Allocated memory is still 204.5 MB. Free memory was 171.6 MB in the beginning and 166.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:49,637 INFO L168 Benchmark]: RCFGBuilder took 1783.63 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 166.4 MB in the beginning and 180.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:49,638 INFO L168 Benchmark]: TraceAbstraction took 32950.57 ms. Allocated memory was 233.3 MB in the beginning and 644.9 MB in the end (delta: 411.6 MB). Free memory was 180.3 MB in the beginning and 419.9 MB in the end (delta: -239.6 MB). Peak memory consumption was 528.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:32:49,654 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 143.7 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 992.45 ms. Allocated memory was 143.7 MB in the beginning and 204.5 MB in the end (delta: 60.8 MB). Free memory was 99.2 MB in the beginning and 171.6 MB in the end (delta: -72.4 MB). Peak memory consumption was 31.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 162.54 ms. Allocated memory is still 204.5 MB. Free memory was 171.6 MB in the beginning and 166.4 MB in the end (delta: 5.2 MB). Peak memory consumption was 5.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1783.63 ms. Allocated memory was 204.5 MB in the beginning and 233.3 MB in the end (delta: 28.8 MB). Free memory was 166.4 MB in the beginning and 180.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 87.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 32950.57 ms. Allocated memory was 233.3 MB in the beginning and 644.9 MB in the end (delta: 411.6 MB). Free memory was 180.3 MB in the beginning and 419.9 MB in the end (delta: -239.6 MB). Peak memory consumption was 528.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 458]: 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: 583]: Loop Invariant Derived loop invariant: (((((((((((!(\old(a7) <= 0) || (((1 == a7 && a17 <= 0) && a16 <= 5) && 1 == a21)) || ((((a17 <= 0 && a16 <= 5) && a8 < 15) || (a17 <= 0 && ((a8 <= 13 && 1 == a20) || ((a16 <= 5 && a8 < 15) && 1 == a20)))) && 1 == a21)) || (1 == a7 && ((((a21 <= 0 && a17 <= 0) && a16 <= 5) && a8 < 15) || ((a8 <= 13 && a21 <= 0) && a16 <= 4)))) || !(5 <= \old(a16))) || (((a7 <= 0 && a16 <= 5) || ((a8 <= 13 && a7 <= 0) && 1 == a20)) && 1 == a21)) || (((1 == a7 && a21 <= 0) && ((a8 <= 13 && 1 == a20) || ((a16 <= 5 && a8 < 15) && 1 == a20))) && 5 <= a16)) || !(1 == \old(a20))) || !(15 <= \old(a8))) || ((a7 <= 0 && 15 <= a8) && 1 == a21)) || !(\old(a16) <= 5)) || !(1 == \old(a21))) || (((a8 <= 13 && 1 == a21) && 1 == a20) && a16 <= 4) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 24.4s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 8.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 546 SDtfs, 3800 SDslu, 387 SDs, 0 SdLazy, 8568 SolverSat, 1195 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2442 GetRequests, 2384 SyntacticMatches, 6 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5808occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.7s AutomataMinimizationTime, 11 MinimizatonAttempts, 4396 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 206 PreInvPairs, 304 NumberOfFragments, 1046 HoareAnnotationTreeSize, 206 FomulaSimplifications, 221064 FormulaSimplificationTreeSizeReduction, 2.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 68998 FormulaSimplificationTreeSizeReductionInter, 5.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.4s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 1520 NumberOfCodeBlocks, 1520 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 2406 ConstructedInterpolants, 0 QuantifiedInterpolants, 655103 SizeOfPredicates, 13 NumberOfNonLiveVariables, 4678 ConjunctsInSsa, 59 ConjunctsInUnsatCore, 17 InterpolantComputations, 5 PerfectInterpolantSequences, 1000/1063 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...