/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 SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:37:55,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:37:55,728 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:37:55,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 16:37:55,771 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:37:55,773 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:37:55,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:37:55,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:37:55,778 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:37:55,779 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:37:55,780 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:37:55,785 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:37:55,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:37:55,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:37:55,794 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:37:55,795 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:37:55,797 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:37:55,808 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:37:55,808 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:37:55,810 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:37:55,811 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 [2020-07-21 16:37:55,846 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:37:55,848 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:37:55,849 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:37:55,850 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:37:55,850 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:37:55,851 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:37:55,851 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:37:55,851 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:37:55,851 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:37:55,852 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:37:55,852 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:37:55,852 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:37:55,852 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:37:55,852 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:37:55,853 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:37:55,853 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:37:55,853 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:37:55,854 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:37:55,854 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:37:55,855 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:37:55,855 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:37:55,855 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:37:55,855 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:37:55,855 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:37:55,856 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:37:55,856 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:37:55,856 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:37:55,856 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:37:55,856 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:37:55,856 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 -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:37:56,164 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:37:56,178 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:37:56,181 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:37:56,183 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:37:56,183 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:37:56,184 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-21 16:37:56,263 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633cfa61c/1d818d80554f490e8ea42cce7ed669d8/FLAG5792b1b76 [2020-07-21 16:37:56,763 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:37:56,764 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-07-21 16:37:56,773 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633cfa61c/1d818d80554f490e8ea42cce7ed669d8/FLAG5792b1b76 [2020-07-21 16:37:57,110 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/633cfa61c/1d818d80554f490e8ea42cce7ed669d8 [2020-07-21 16:37:57,118 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:37:57,120 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:37:57,121 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:37:57,121 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:37:57,125 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:37:57,126 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,129 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45792849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57, skipping insertion in model container [2020-07-21 16:37:57,129 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,139 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:37:57,168 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:37:57,389 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:37:57,397 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:37:57,432 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:37:57,550 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:37:57,551 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57 WrapperNode [2020-07-21 16:37:57,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:37:57,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:37:57,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:37:57,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:37:57,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,572 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,572 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,580 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,591 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (1/1) ... [2020-07-21 16:37:57,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:37:57,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:37:57,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:37:57,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:37:57,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (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 [2020-07-21 16:37:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:37:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:37:57,652 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:37:57,652 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:37:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:37:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:37:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:37:57,653 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:37:58,085 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:37:58,086 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-21 16:37:58,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:37:58 BoogieIcfgContainer [2020-07-21 16:37:58,092 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:37:58,094 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:37:58,094 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:37:58,097 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:37:58,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:37:57" (1/3) ... [2020-07-21 16:37:58,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fe7cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:37:58, skipping insertion in model container [2020-07-21 16:37:58,099 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:37:57" (2/3) ... [2020-07-21 16:37:58,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59fe7cd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:37:58, skipping insertion in model container [2020-07-21 16:37:58,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:37:58" (3/3) ... [2020-07-21 16:37:58,102 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-07-21 16:37:58,113 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:37:58,120 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:37:58,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:37:58,161 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:37:58,162 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:37:58,162 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:37:58,163 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:37:58,165 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:37:58,165 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:37:58,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:37:58,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:37:58,192 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-07-21 16:37:58,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 16:37:58,199 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:37:58,200 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:37:58,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:37:58,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:37:58,207 INFO L82 PathProgramCache]: Analyzing trace with hash -901605196, now seen corresponding path program 1 times [2020-07-21 16:37:58,216 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:37:58,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1126768605] [2020-07-21 16:37:58,217 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:37:58,318 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:37:58,318 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:37:58,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-21 16:37:58,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:37:58,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:37:58,352 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:37:58,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1126768605] [2020-07-21 16:37:58,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:37:58,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-21 16:37:58,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628806396] [2020-07-21 16:37:58,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-21 16:37:58,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:37:58,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-21 16:37:58,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:37:58,379 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 2 states. [2020-07-21 16:37:58,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:37:58,409 INFO L93 Difference]: Finished difference Result 136 states and 250 transitions. [2020-07-21 16:37:58,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-21 16:37:58,411 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 13 [2020-07-21 16:37:58,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:37:58,421 INFO L225 Difference]: With dead ends: 136 [2020-07-21 16:37:58,421 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 16:37:58,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-21 16:37:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 16:37:58,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-21 16:37:58,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 16:37:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 91 transitions. [2020-07-21 16:37:58,465 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 91 transitions. Word has length 13 [2020-07-21 16:37:58,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:37:58,466 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 91 transitions. [2020-07-21 16:37:58,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-21 16:37:58,467 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 91 transitions. [2020-07-21 16:37:58,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-21 16:37:58,468 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:37:58,468 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:37:58,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:37:58,680 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:37:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:37:58,681 INFO L82 PathProgramCache]: Analyzing trace with hash -1647463811, now seen corresponding path program 1 times [2020-07-21 16:37:58,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:37:58,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1188390343] [2020-07-21 16:37:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:37:58,734 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:37:58,735 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:37:58,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:37:58,739 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:37:58,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:37:58,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:37:58,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1188390343] [2020-07-21 16:37:58,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:37:58,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:37:58,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254460330] [2020-07-21 16:37:58,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:37:58,786 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:37:58,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:37:58,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:58,787 INFO L87 Difference]: Start difference. First operand 61 states and 91 transitions. Second operand 3 states. [2020-07-21 16:37:58,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:37:58,870 INFO L93 Difference]: Finished difference Result 122 states and 186 transitions. [2020-07-21 16:37:58,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:37:58,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-07-21 16:37:58,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:37:58,877 INFO L225 Difference]: With dead ends: 122 [2020-07-21 16:37:58,878 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 16:37:58,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:58,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 16:37:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-07-21 16:37:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 16:37:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2020-07-21 16:37:58,889 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 14 [2020-07-21 16:37:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:37:58,890 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2020-07-21 16:37:58,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:37:58,890 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2020-07-21 16:37:58,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 16:37:58,891 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:37:58,891 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:37:59,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:37:59,107 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:37:59,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:37:59,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1212559863, now seen corresponding path program 1 times [2020-07-21 16:37:59,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:37:59,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1930880477] [2020-07-21 16:37:59,110 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:37:59,173 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:37:59,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:37:59,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:37:59,176 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:37:59,191 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:37:59,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:37:59,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1930880477] [2020-07-21 16:37:59,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:37:59,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:37:59,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326651494] [2020-07-21 16:37:59,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:37:59,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:37:59,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:37:59,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:59,195 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand 3 states. [2020-07-21 16:37:59,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:37:59,242 INFO L93 Difference]: Finished difference Result 120 states and 178 transitions. [2020-07-21 16:37:59,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:37:59,242 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-21 16:37:59,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:37:59,244 INFO L225 Difference]: With dead ends: 120 [2020-07-21 16:37:59,244 INFO L226 Difference]: Without dead ends: 59 [2020-07-21 16:37:59,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:59,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-21 16:37:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-07-21 16:37:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 16:37:59,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 84 transitions. [2020-07-21 16:37:59,254 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 84 transitions. Word has length 19 [2020-07-21 16:37:59,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:37:59,255 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 84 transitions. [2020-07-21 16:37:59,255 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:37:59,255 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 84 transitions. [2020-07-21 16:37:59,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-21 16:37:59,257 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:37:59,257 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:37:59,471 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:37:59,473 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:37:59,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:37:59,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2054021688, now seen corresponding path program 1 times [2020-07-21 16:37:59,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:37:59,475 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1710127776] [2020-07-21 16:37:59,475 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:37:59,561 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:37:59,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:37:59,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 16:37:59,567 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:37:59,586 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:37:59,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:37:59,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1710127776] [2020-07-21 16:37:59,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:37:59,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:37:59,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76502294] [2020-07-21 16:37:59,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:37:59,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:37:59,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:37:59,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:59,595 INFO L87 Difference]: Start difference. First operand 59 states and 84 transitions. Second operand 3 states. [2020-07-21 16:37:59,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:37:59,664 INFO L93 Difference]: Finished difference Result 143 states and 214 transitions. [2020-07-21 16:37:59,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:37:59,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-07-21 16:37:59,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:37:59,666 INFO L225 Difference]: With dead ends: 143 [2020-07-21 16:37:59,666 INFO L226 Difference]: Without dead ends: 97 [2020-07-21 16:37:59,667 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:59,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-21 16:37:59,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 94. [2020-07-21 16:37:59,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-07-21 16:37:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 136 transitions. [2020-07-21 16:37:59,678 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 136 transitions. Word has length 24 [2020-07-21 16:37:59,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:37:59,679 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 136 transitions. [2020-07-21 16:37:59,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:37:59,679 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 136 transitions. [2020-07-21 16:37:59,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-21 16:37:59,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:37:59,680 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:37:59,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:37:59,895 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:37:59,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:37:59,895 INFO L82 PathProgramCache]: Analyzing trace with hash -1279925660, now seen corresponding path program 1 times [2020-07-21 16:37:59,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:37:59,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572733017] [2020-07-21 16:37:59,897 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:37:59,938 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:37:59,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:37:59,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:37:59,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:37:59,956 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:37:59,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:37:59,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572733017] [2020-07-21 16:37:59,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:37:59,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:37:59,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622446577] [2020-07-21 16:37:59,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:37:59,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:37:59,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:37:59,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:37:59,959 INFO L87 Difference]: Start difference. First operand 94 states and 136 transitions. Second operand 3 states. [2020-07-21 16:38:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:38:00,008 INFO L93 Difference]: Finished difference Result 187 states and 272 transitions. [2020-07-21 16:38:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:38:00,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-07-21 16:38:00,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:38:00,011 INFO L225 Difference]: With dead ends: 187 [2020-07-21 16:38:00,012 INFO L226 Difference]: Without dead ends: 108 [2020-07-21 16:38:00,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:38:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-07-21 16:38:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2020-07-21 16:38:00,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-21 16:38:00,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 150 transitions. [2020-07-21 16:38:00,033 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 150 transitions. Word has length 25 [2020-07-21 16:38:00,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:38:00,033 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 150 transitions. [2020-07-21 16:38:00,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:38:00,034 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 150 transitions. [2020-07-21 16:38:00,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-21 16:38:00,035 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:38:00,035 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 16:38:00,250 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:38:00,251 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:38:00,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:38:00,252 INFO L82 PathProgramCache]: Analyzing trace with hash -964230168, now seen corresponding path program 1 times [2020-07-21 16:38:00,252 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:38:00,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259651076] [2020-07-21 16:38:00,255 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:38:00,305 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 16:38:00,305 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:38:00,306 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 2 conjunts are in the unsatisfiable core [2020-07-21 16:38:00,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:38:00,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 16:38:00,323 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:38:00,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259651076] [2020-07-21 16:38:00,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:38:00,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:38:00,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941604491] [2020-07-21 16:38:00,325 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:38:00,325 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:38:00,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:38:00,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:38:00,326 INFO L87 Difference]: Start difference. First operand 106 states and 150 transitions. Second operand 3 states. [2020-07-21 16:38:00,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:38:00,351 INFO L93 Difference]: Finished difference Result 173 states and 247 transitions. [2020-07-21 16:38:00,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:38:00,352 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 36 [2020-07-21 16:38:00,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:38:00,353 INFO L225 Difference]: With dead ends: 173 [2020-07-21 16:38:00,353 INFO L226 Difference]: Without dead ends: 82 [2020-07-21 16:38:00,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:38:00,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-07-21 16:38:00,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 82. [2020-07-21 16:38:00,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-07-21 16:38:00,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 112 transitions. [2020-07-21 16:38:00,362 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 112 transitions. Word has length 36 [2020-07-21 16:38:00,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:38:00,363 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 112 transitions. [2020-07-21 16:38:00,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:38:00,363 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 112 transitions. [2020-07-21 16:38:00,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-21 16:38:00,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:38:00,365 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-07-21 16:38:00,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:38:00,580 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:38:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:38:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1856126908, now seen corresponding path program 1 times [2020-07-21 16:38:00,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:38:00,582 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44233718] [2020-07-21 16:38:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) 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 [2020-07-21 16:38:00,642 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:38:00,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:38:00,644 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 16:38:00,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:38:00,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 16:38:00,678 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:38:00,678 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44233718] [2020-07-21 16:38:00,678 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:38:00,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 16:38:00,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166342650] [2020-07-21 16:38:00,679 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 16:38:00,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:38:00,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 16:38:00,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 16:38:00,680 INFO L87 Difference]: Start difference. First operand 82 states and 112 transitions. Second operand 4 states. [2020-07-21 16:38:00,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:38:00,730 INFO L93 Difference]: Finished difference Result 85 states and 115 transitions. [2020-07-21 16:38:00,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 16:38:00,730 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-07-21 16:38:00,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:38:00,731 INFO L225 Difference]: With dead ends: 85 [2020-07-21 16:38:00,731 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:38:00,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 16:38:00,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:38:00,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:38:00,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:38:00,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:38:00,734 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 37 [2020-07-21 16:38:00,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:38:00,734 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:38:00,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 16:38:00,734 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:38:00,734 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:38:00,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:38:00,945 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:38:01,120 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:38:01,121 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:38:01,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:38:01,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:38:01,121 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 16:38:01,121 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:38:01,121 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:38:01,121 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 344) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L36(lines 36 47) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L86(lines 86 101) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L53(lines 53 104) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L202(lines 202 217) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L70(lines 70 85) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L318(lines 318 333) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L186(lines 186 201) no Hoare annotation was computed. [2020-07-21 16:38:01,122 INFO L268 CegarLoopResult]: For program point L54(lines 54 69) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L264 CegarLoopResult]: At program point L335(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (<= main_~q~0 2) (<= 2 main_~q~0) .cse0) (and .cse0 (<= main_~q~0 0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L302(lines 302 317) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 344) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L170(lines 170 185) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L286(lines 286 301) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L154(lines 154 169) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L88(lines 88 99) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L270(lines 270 285) no Hoare annotation was computed. [2020-07-21 16:38:01,123 INFO L268 CegarLoopResult]: For program point L204(lines 204 215) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L138(lines 138 153) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L105(lines 105 220) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L72(lines 72 83) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L320(lines 320 331) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L254(lines 254 269) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L221(lines 221 336) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L188(lines 188 199) no Hoare annotation was computed. [2020-07-21 16:38:01,124 INFO L268 CegarLoopResult]: For program point L122(lines 122 137) no Hoare annotation was computed. [2020-07-21 16:38:01,125 INFO L268 CegarLoopResult]: For program point L56(lines 56 67) no Hoare annotation was computed. [2020-07-21 16:38:01,125 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 339) the Hoare annotation is: (let ((.cse0 (= 0 main_~this_sink~0))) (or (and (<= main_~q~0 2) (<= 2 main_~q~0) .cse0) (and .cse0 (<= main_~q~0 0)) (and (<= 3 main_~q~0) (not .cse0)))) [2020-07-21 16:38:01,125 INFO L268 CegarLoopResult]: For program point L23-3(lines 23 339) no Hoare annotation was computed. [2020-07-21 16:38:01,125 INFO L268 CegarLoopResult]: For program point L304(lines 304 315) no Hoare annotation was computed. [2020-07-21 16:38:01,125 INFO L268 CegarLoopResult]: For program point L238(lines 238 253) no Hoare annotation was computed. [2020-07-21 16:38:01,125 INFO L268 CegarLoopResult]: For program point L172(lines 172 183) no Hoare annotation was computed. [2020-07-21 16:38:01,125 INFO L268 CegarLoopResult]: For program point L106(lines 106 121) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L40(lines 40 42) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L288(lines 288 299) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L222(lines 222 237) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L156(lines 156 167) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L272(lines 272 283) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L140(lines 140 151) no Hoare annotation was computed. [2020-07-21 16:38:01,126 INFO L268 CegarLoopResult]: For program point L256(lines 256 267) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L124(lines 124 135) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L240(lines 240 251) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L108(lines 108 119) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L224(lines 224 235) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L92(lines 92 94) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L208(lines 208 210) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L76(lines 76 78) no Hoare annotation was computed. [2020-07-21 16:38:01,127 INFO L268 CegarLoopResult]: For program point L324(lines 324 326) no Hoare annotation was computed. [2020-07-21 16:38:01,128 INFO L268 CegarLoopResult]: For program point L192(lines 192 194) no Hoare annotation was computed. [2020-07-21 16:38:01,128 INFO L268 CegarLoopResult]: For program point L60(lines 60 62) no Hoare annotation was computed. [2020-07-21 16:38:01,128 INFO L268 CegarLoopResult]: For program point L308(lines 308 310) no Hoare annotation was computed. [2020-07-21 16:38:01,128 INFO L268 CegarLoopResult]: For program point L176(lines 176 178) no Hoare annotation was computed. [2020-07-21 16:38:01,128 INFO L264 CegarLoopResult]: At program point L325(lines 13 344) the Hoare annotation is: false [2020-07-21 16:38:01,128 INFO L268 CegarLoopResult]: For program point L292(lines 292 294) no Hoare annotation was computed. [2020-07-21 16:38:01,128 INFO L268 CegarLoopResult]: For program point L160(lines 160 162) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L276(lines 276 278) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L144(lines 144 146) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L260(lines 260 262) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L128(lines 128 130) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L244(lines 244 246) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L112(lines 112 114) no Hoare annotation was computed. [2020-07-21 16:38:01,129 INFO L268 CegarLoopResult]: For program point L228(lines 228 230) no Hoare annotation was computed. [2020-07-21 16:38:01,130 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 343) no Hoare annotation was computed. [2020-07-21 16:38:01,130 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 344) the Hoare annotation is: true [2020-07-21 16:38:01,130 INFO L268 CegarLoopResult]: For program point L33(lines 33 52) no Hoare annotation was computed. [2020-07-21 16:38:01,130 INFO L268 CegarLoopResult]: For program point L34(lines 34 49) no Hoare annotation was computed. [2020-07-21 16:38:01,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:38:01 BoogieIcfgContainer [2020-07-21 16:38:01,148 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:38:01,151 INFO L168 Benchmark]: Toolchain (without parser) took 4030.45 ms. Allocated memory was 144.2 MB in the beginning and 233.3 MB in the end (delta: 89.1 MB). Free memory was 100.3 MB in the beginning and 108.6 MB in the end (delta: -8.3 MB). Peak memory consumption was 80.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:38:01,152 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 16:38:01,153 INFO L168 Benchmark]: CACSL2BoogieTranslator took 430.41 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 99.9 MB in the beginning and 180.8 MB in the end (delta: -80.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. [2020-07-21 16:38:01,154 INFO L168 Benchmark]: Boogie Preprocessor took 44.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-21 16:38:01,154 INFO L168 Benchmark]: RCFGBuilder took 495.94 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 151.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:38:01,155 INFO L168 Benchmark]: TraceAbstraction took 3054.50 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 150.8 MB in the beginning and 108.6 MB in the end (delta: 42.2 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:38:01,160 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 119.1 MB in the beginning and 118.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 430.41 ms. Allocated memory was 144.2 MB in the beginning and 202.4 MB in the end (delta: 58.2 MB). Free memory was 99.9 MB in the beginning and 180.8 MB in the end (delta: -80.9 MB). Peak memory consumption was 21.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.00 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 178.8 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 495.94 ms. Allocated memory is still 202.4 MB. Free memory was 178.8 MB in the beginning and 151.5 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3054.50 ms. Allocated memory was 202.4 MB in the beginning and 233.3 MB in the end (delta: 30.9 MB). Free memory was 150.8 MB in the beginning and 108.6 MB in the end (delta: 42.2 MB). Peak memory consumption was 73.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 343]: 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: 23]: Loop Invariant Derived loop invariant: (((q <= 2 && 2 <= q) && 0 == this_sink) || (0 == this_sink && q <= 0)) || (3 <= q && !(0 == this_sink)) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (((q <= 2 && 2 <= q) && 0 == this_sink) || (0 == this_sink && q <= 0)) || (3 <= q && !(0 == this_sink)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 549 SDtfs, 199 SDslu, 292 SDs, 0 SdLazy, 98 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 15 NumberOfFragments, 57 HoareAnnotationTreeSize, 7 FomulaSimplifications, 29 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 12 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 168 NumberOfCodeBlocks, 122 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 161 ConstructedInterpolants, 0 QuantifiedInterpolants, 6905 SizeOfPredicates, 5 NumberOfNonLiveVariables, 771 ConjunctsInSsa, 17 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 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...