/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 01:42:50,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 01:42:50,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 01:42:50,495 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 01:42:50,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 01:42:50,498 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 01:42:50,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 01:42:50,514 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 01:42:50,516 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 01:42:50,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 01:42:50,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 01:42:50,519 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 01:42:50,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 01:42:50,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 01:42:50,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 01:42:50,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 01:42:50,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 01:42:50,525 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 01:42:50,527 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 01:42:50,529 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 01:42:50,531 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 01:42:50,532 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 01:42:50,533 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 01:42:50,534 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 01:42:50,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-20 01:42:50,537 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-20 01:42:50,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-20 01:42:50,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-20 01:42:50,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-20 01:42:50,541 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-20 01:42:50,541 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-20 01:42:50,542 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-20 01:42:50,543 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-20 01:42:50,544 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-20 01:42:50,545 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-20 01:42:50,545 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-20 01:42:50,546 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-20 01:42:50,546 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-20 01:42:50,546 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 01:42:50,547 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 01:42:50,548 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 01:42:50,549 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 01:42:50,565 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 01:42:50,565 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 01:42:50,567 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 01:42:50,567 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 01:42:50,567 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 01:42:50,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 01:42:50,568 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 01:42:50,568 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 01:42:50,568 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 01:42:50,568 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 01:42:50,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 01:42:50,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 01:42:50,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 01:42:50,569 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 01:42:50,569 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 01:42:50,570 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 01:42:50,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 01:42:50,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 01:42:50,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 01:42:50,570 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 01:42:50,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 01:42:50,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:42:50,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 01:42:50,571 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 01:42:50,571 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 01:42:50,572 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 01:42:50,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 01:42:50,572 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 01:42:50,572 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 01:42:50,572 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_SMT_AM [2020-07-20 01:42:50,885 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 01:42:50,899 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 01:42:50,903 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 01:42:50,905 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 01:42:50,905 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 01:42:50,906 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-07-20 01:42:50,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c0ae7e6/e7ed72f9a885400fa37d3cbcc98c8b8e/FLAG4b0f8a57c [2020-07-20 01:42:51,591 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 01:42:51,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-07-20 01:42:51,611 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c0ae7e6/e7ed72f9a885400fa37d3cbcc98c8b8e/FLAG4b0f8a57c [2020-07-20 01:42:51,907 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a7c0ae7e6/e7ed72f9a885400fa37d3cbcc98c8b8e [2020-07-20 01:42:51,920 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 01:42:51,924 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 01:42:51,925 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 01:42:51,925 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 01:42:51,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 01:42:51,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:42:51" (1/1) ... [2020-07-20 01:42:51,934 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b0daa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:51, skipping insertion in model container [2020-07-20 01:42:51,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 01:42:51" (1/1) ... [2020-07-20 01:42:51,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 01:42:51,973 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 01:42:52,184 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:42:52,197 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 01:42:52,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 01:42:52,356 INFO L208 MainTranslator]: Completed translation [2020-07-20 01:42:52,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52 WrapperNode [2020-07-20 01:42:52,356 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 01:42:52,357 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 01:42:52,357 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 01:42:52,357 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 01:42:52,371 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,372 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,381 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,382 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,390 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,404 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... [2020-07-20 01:42:52,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 01:42:52,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 01:42:52,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 01:42:52,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 01:42:52,409 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 01:42:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 01:42:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 01:42:52,478 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 01:42:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 01:42:52,478 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 01:42:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 01:42:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 01:42:52,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 01:42:53,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 01:42:53,048 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-07-20 01:42:53,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:42:53 BoogieIcfgContainer [2020-07-20 01:42:53,054 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 01:42:53,055 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 01:42:53,056 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 01:42:53,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 01:42:53,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 01:42:51" (1/3) ... [2020-07-20 01:42:53,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d80229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:42:53, skipping insertion in model container [2020-07-20 01:42:53,061 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 01:42:52" (2/3) ... [2020-07-20 01:42:53,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d80229 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 01:42:53, skipping insertion in model container [2020-07-20 01:42:53,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 01:42:53" (3/3) ... [2020-07-20 01:42:53,064 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-07-20 01:42:53,076 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 01:42:53,087 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 01:42:53,103 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 01:42:53,130 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 01:42:53,131 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 01:42:53,131 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 01:42:53,131 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 01:42:53,131 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 01:42:53,131 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 01:42:53,132 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 01:42:53,132 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 01:42:53,155 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states. [2020-07-20 01:42:53,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 01:42:53,164 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:53,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:42:53,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:53,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash -105811556, now seen corresponding path program 1 times [2020-07-20 01:42:53,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:53,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968656638] [2020-07-20 01:42:53,186 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:53,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:53,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:42:53,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968656638] [2020-07-20 01:42:53,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:53,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 01:42:53,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648928532] [2020-07-20 01:42:53,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 01:42:53,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:53,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 01:42:53,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:42:53,418 INFO L87 Difference]: Start difference. First operand 83 states. Second operand 3 states. [2020-07-20 01:42:53,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:53,489 INFO L93 Difference]: Finished difference Result 160 states and 298 transitions. [2020-07-20 01:42:53,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 01:42:53,492 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-07-20 01:42:53,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:53,506 INFO L225 Difference]: With dead ends: 160 [2020-07-20 01:42:53,506 INFO L226 Difference]: Without dead ends: 78 [2020-07-20 01:42:53,511 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 01:42:53,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-20 01:42:53,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-07-20 01:42:53,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-20 01:42:53,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 113 transitions. [2020-07-20 01:42:53,572 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 113 transitions. Word has length 13 [2020-07-20 01:42:53,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:53,573 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 113 transitions. [2020-07-20 01:42:53,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 01:42:53,573 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 113 transitions. [2020-07-20 01:42:53,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-20 01:42:53,574 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:53,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:42:53,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 01:42:53,576 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:53,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:53,576 INFO L82 PathProgramCache]: Analyzing trace with hash 1547300989, now seen corresponding path program 1 times [2020-07-20 01:42:53,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:53,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [983159823] [2020-07-20 01:42:53,578 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:53,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:53,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:42:53,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [983159823] [2020-07-20 01:42:53,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:53,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:53,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366349956] [2020-07-20 01:42:53,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:53,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:53,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:53,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:53,713 INFO L87 Difference]: Start difference. First operand 78 states and 113 transitions. Second operand 4 states. [2020-07-20 01:42:54,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:54,072 INFO L93 Difference]: Finished difference Result 153 states and 224 transitions. [2020-07-20 01:42:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:54,073 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-20 01:42:54,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:54,075 INFO L225 Difference]: With dead ends: 153 [2020-07-20 01:42:54,076 INFO L226 Difference]: Without dead ends: 81 [2020-07-20 01:42:54,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:54,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-07-20 01:42:54,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-07-20 01:42:54,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-20 01:42:54,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 116 transitions. [2020-07-20 01:42:54,091 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 116 transitions. Word has length 14 [2020-07-20 01:42:54,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:54,092 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 116 transitions. [2020-07-20 01:42:54,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:54,092 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 116 transitions. [2020-07-20 01:42:54,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 01:42:54,093 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:54,093 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:42:54,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 01:42:54,094 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:54,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:54,094 INFO L82 PathProgramCache]: Analyzing trace with hash 555004895, now seen corresponding path program 1 times [2020-07-20 01:42:54,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:54,095 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450599582] [2020-07-20 01:42:54,095 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:54,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,181 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:42:54,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450599582] [2020-07-20 01:42:54,182 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:54,183 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:54,183 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359763544] [2020-07-20 01:42:54,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:54,184 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:54,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:54,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:54,185 INFO L87 Difference]: Start difference. First operand 81 states and 116 transitions. Second operand 4 states. [2020-07-20 01:42:54,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:54,277 INFO L93 Difference]: Finished difference Result 146 states and 213 transitions. [2020-07-20 01:42:54,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:54,277 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 19 [2020-07-20 01:42:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:54,279 INFO L225 Difference]: With dead ends: 146 [2020-07-20 01:42:54,279 INFO L226 Difference]: Without dead ends: 72 [2020-07-20 01:42:54,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:54,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-20 01:42:54,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-20 01:42:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-20 01:42:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 102 transitions. [2020-07-20 01:42:54,289 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 102 transitions. Word has length 19 [2020-07-20 01:42:54,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:54,290 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 102 transitions. [2020-07-20 01:42:54,290 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:54,290 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 102 transitions. [2020-07-20 01:42:54,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-20 01:42:54,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:54,292 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] [2020-07-20 01:42:54,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 01:42:54,292 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:54,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:54,293 INFO L82 PathProgramCache]: Analyzing trace with hash -624681896, now seen corresponding path program 1 times [2020-07-20 01:42:54,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:54,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349775473] [2020-07-20 01:42:54,294 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:54,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,348 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:42:54,348 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349775473] [2020-07-20 01:42:54,349 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:54,349 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:54,349 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306491494] [2020-07-20 01:42:54,349 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:54,350 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:54,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:54,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:54,350 INFO L87 Difference]: Start difference. First operand 72 states and 102 transitions. Second operand 4 states. [2020-07-20 01:42:54,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:54,598 INFO L93 Difference]: Finished difference Result 192 states and 280 transitions. [2020-07-20 01:42:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:54,599 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-07-20 01:42:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:54,601 INFO L225 Difference]: With dead ends: 192 [2020-07-20 01:42:54,601 INFO L226 Difference]: Without dead ends: 122 [2020-07-20 01:42:54,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-07-20 01:42:54,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-07-20 01:42:54,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-07-20 01:42:54,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 153 transitions. [2020-07-20 01:42:54,613 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 153 transitions. Word has length 22 [2020-07-20 01:42:54,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:54,614 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 153 transitions. [2020-07-20 01:42:54,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:54,614 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 153 transitions. [2020-07-20 01:42:54,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-20 01:42:54,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:54,615 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] [2020-07-20 01:42:54,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 01:42:54,616 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:54,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:54,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1531598883, now seen corresponding path program 1 times [2020-07-20 01:42:54,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:54,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626852536] [2020-07-20 01:42:54,617 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:54,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,662 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 01:42:54,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626852536] [2020-07-20 01:42:54,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:54,663 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:54,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740074388] [2020-07-20 01:42:54,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:54,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:54,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:54,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:54,664 INFO L87 Difference]: Start difference. First operand 108 states and 153 transitions. Second operand 4 states. [2020-07-20 01:42:54,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:54,839 INFO L93 Difference]: Finished difference Result 183 states and 260 transitions. [2020-07-20 01:42:54,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:54,840 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-07-20 01:42:54,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:54,841 INFO L225 Difference]: With dead ends: 183 [2020-07-20 01:42:54,841 INFO L226 Difference]: Without dead ends: 87 [2020-07-20 01:42:54,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:54,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-07-20 01:42:54,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 85. [2020-07-20 01:42:54,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-20 01:42:54,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 117 transitions. [2020-07-20 01:42:54,851 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 117 transitions. Word has length 23 [2020-07-20 01:42:54,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:54,852 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 117 transitions. [2020-07-20 01:42:54,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:54,852 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 117 transitions. [2020-07-20 01:42:54,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 01:42:54,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:54,854 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 01:42:54,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 01:42:54,854 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:54,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:54,855 INFO L82 PathProgramCache]: Analyzing trace with hash -576284788, now seen corresponding path program 1 times [2020-07-20 01:42:54,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:54,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750708663] [2020-07-20 01:42:54,856 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:54,910 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:42:54,911 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750708663] [2020-07-20 01:42:54,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:54,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:54,912 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820584085] [2020-07-20 01:42:54,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:54,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:54,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:54,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:54,913 INFO L87 Difference]: Start difference. First operand 85 states and 117 transitions. Second operand 4 states. [2020-07-20 01:42:55,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:55,023 INFO L93 Difference]: Finished difference Result 134 states and 190 transitions. [2020-07-20 01:42:55,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:55,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-07-20 01:42:55,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:55,026 INFO L225 Difference]: With dead ends: 134 [2020-07-20 01:42:55,026 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 01:42:55,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:55,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 01:42:55,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-20 01:42:55,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-20 01:42:55,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 96 transitions. [2020-07-20 01:42:55,037 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 96 transitions. Word has length 29 [2020-07-20 01:42:55,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:55,038 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 96 transitions. [2020-07-20 01:42:55,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:55,039 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 96 transitions. [2020-07-20 01:42:55,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-20 01:42:55,040 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:55,040 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] [2020-07-20 01:42:55,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 01:42:55,041 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:55,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:55,042 INFO L82 PathProgramCache]: Analyzing trace with hash -31288535, now seen corresponding path program 1 times [2020-07-20 01:42:55,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:55,043 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62660331] [2020-07-20 01:42:55,043 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,106 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:42:55,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62660331] [2020-07-20 01:42:55,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:55,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:55,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038334674] [2020-07-20 01:42:55,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:55,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:55,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:55,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:55,110 INFO L87 Difference]: Start difference. First operand 70 states and 96 transitions. Second operand 4 states. [2020-07-20 01:42:55,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:55,366 INFO L93 Difference]: Finished difference Result 158 states and 228 transitions. [2020-07-20 01:42:55,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:55,367 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-07-20 01:42:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:55,368 INFO L225 Difference]: With dead ends: 158 [2020-07-20 01:42:55,368 INFO L226 Difference]: Without dead ends: 111 [2020-07-20 01:42:55,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:55,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-07-20 01:42:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 99. [2020-07-20 01:42:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-07-20 01:42:55,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 138 transitions. [2020-07-20 01:42:55,377 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 138 transitions. Word has length 30 [2020-07-20 01:42:55,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:55,377 INFO L479 AbstractCegarLoop]: Abstraction has 99 states and 138 transitions. [2020-07-20 01:42:55,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:55,378 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 138 transitions. [2020-07-20 01:42:55,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 01:42:55,379 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:55,380 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] [2020-07-20 01:42:55,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 01:42:55,380 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:55,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:55,381 INFO L82 PathProgramCache]: Analyzing trace with hash 180888733, now seen corresponding path program 1 times [2020-07-20 01:42:55,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:55,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623011256] [2020-07-20 01:42:55,382 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:55,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:42:55,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623011256] [2020-07-20 01:42:55,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:55,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:55,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036820883] [2020-07-20 01:42:55,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:55,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:55,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:55,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:55,449 INFO L87 Difference]: Start difference. First operand 99 states and 138 transitions. Second operand 4 states. [2020-07-20 01:42:55,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:55,580 INFO L93 Difference]: Finished difference Result 166 states and 232 transitions. [2020-07-20 01:42:55,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:55,581 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-20 01:42:55,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:55,582 INFO L225 Difference]: With dead ends: 166 [2020-07-20 01:42:55,582 INFO L226 Difference]: Without dead ends: 92 [2020-07-20 01:42:55,583 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:55,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-20 01:42:55,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-07-20 01:42:55,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-20 01:42:55,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 120 transitions. [2020-07-20 01:42:55,599 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 120 transitions. Word has length 31 [2020-07-20 01:42:55,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:55,600 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 120 transitions. [2020-07-20 01:42:55,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:55,600 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 120 transitions. [2020-07-20 01:42:55,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 01:42:55,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:55,605 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] [2020-07-20 01:42:55,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 01:42:55,606 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:55,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:55,608 INFO L82 PathProgramCache]: Analyzing trace with hash 317242888, now seen corresponding path program 1 times [2020-07-20 01:42:55,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:55,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277731159] [2020-07-20 01:42:55,609 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:55,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,664 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:42:55,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277731159] [2020-07-20 01:42:55,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:55,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:55,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355556215] [2020-07-20 01:42:55,665 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:55,666 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:55,666 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:55,667 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:55,667 INFO L87 Difference]: Start difference. First operand 92 states and 120 transitions. Second operand 4 states. [2020-07-20 01:42:55,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:55,800 INFO L93 Difference]: Finished difference Result 139 states and 184 transitions. [2020-07-20 01:42:55,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:55,801 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-07-20 01:42:55,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:55,802 INFO L225 Difference]: With dead ends: 139 [2020-07-20 01:42:55,802 INFO L226 Difference]: Without dead ends: 72 [2020-07-20 01:42:55,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:55,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-20 01:42:55,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-20 01:42:55,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-20 01:42:55,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 91 transitions. [2020-07-20 01:42:55,809 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 91 transitions. Word has length 31 [2020-07-20 01:42:55,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:55,809 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 91 transitions. [2020-07-20 01:42:55,809 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:55,809 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 91 transitions. [2020-07-20 01:42:55,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-20 01:42:55,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:55,811 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] [2020-07-20 01:42:55,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 01:42:55,811 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:55,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:55,812 INFO L82 PathProgramCache]: Analyzing trace with hash -1695196396, now seen corresponding path program 1 times [2020-07-20 01:42:55,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:55,813 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329506901] [2020-07-20 01:42:55,813 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:55,867 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:42:55,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329506901] [2020-07-20 01:42:55,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:55,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:55,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364951122] [2020-07-20 01:42:55,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:55,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:55,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:55,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:55,870 INFO L87 Difference]: Start difference. First operand 72 states and 91 transitions. Second operand 4 states. [2020-07-20 01:42:56,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:56,011 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-07-20 01:42:56,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:56,011 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-07-20 01:42:56,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:56,013 INFO L225 Difference]: With dead ends: 74 [2020-07-20 01:42:56,013 INFO L226 Difference]: Without dead ends: 70 [2020-07-20 01:42:56,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:56,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-20 01:42:56,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-07-20 01:42:56,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-20 01:42:56,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 88 transitions. [2020-07-20 01:42:56,021 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 88 transitions. Word has length 32 [2020-07-20 01:42:56,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:56,024 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 88 transitions. [2020-07-20 01:42:56,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:56,024 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 88 transitions. [2020-07-20 01:42:56,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-20 01:42:56,027 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 01:42:56,027 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] [2020-07-20 01:42:56,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 01:42:56,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 01:42:56,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 01:42:56,028 INFO L82 PathProgramCache]: Analyzing trace with hash -1000030502, now seen corresponding path program 1 times [2020-07-20 01:42:56,029 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 01:42:56,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434471983] [2020-07-20 01:42:56,029 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39897748 [2020-07-20 01:42:56,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:56,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 01:42:56,107 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 01:42:56,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434471983] [2020-07-20 01:42:56,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 01:42:56,109 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 01:42:56,109 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614860655] [2020-07-20 01:42:56,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 01:42:56,111 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 01:42:56,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 01:42:56,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 01:42:56,112 INFO L87 Difference]: Start difference. First operand 70 states and 88 transitions. Second operand 4 states. [2020-07-20 01:42:56,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 01:42:56,231 INFO L93 Difference]: Finished difference Result 111 states and 143 transitions. [2020-07-20 01:42:56,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 01:42:56,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-07-20 01:42:56,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 01:42:56,233 INFO L225 Difference]: With dead ends: 111 [2020-07-20 01:42:56,233 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 01:42:56,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 01:42:56,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 01:42:56,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 01:42:56,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 01:42:56,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 01:42:56,235 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-07-20 01:42:56,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 01:42:56,235 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 01:42:56,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 01:42:56,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 01:42:56,236 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 01:42:56,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 01:42:56,238 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 01:42:56,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:42:56,422 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|) (= ~m_update~0 |old(~m_update~0)|)) [2020-07-20 01:42:56,423 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:42:56,423 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 01:42:56,423 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 01:42:56,423 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 01:42:56,423 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 01:42:56,423 INFO L268 CegarLoopResult]: For program point L316(lines 316 331) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point L283(lines 283 382) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point L250(lines 250 261) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 390) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point L184(lines 184 199) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point L118(lines 118 129) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point L366(lines 366 377) no Hoare annotation was computed. [2020-07-20 01:42:56,424 INFO L268 CegarLoopResult]: For program point L300(lines 300 315) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L234(lines 234 245) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L102(lines 102 113) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L350(lines 350 361) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L284(lines 284 299) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L218(lines 218 229) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L86(lines 86 88) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L334(lines 334 345) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L202(lines 202 213) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L70(lines 70 72) no Hoare annotation was computed. [2020-07-20 01:42:56,425 INFO L268 CegarLoopResult]: For program point L318(lines 318 329) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L186(lines 186 197) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L54(lines 54 56) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L302(lines 302 313) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 390) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L170(lines 170 172) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L286(lines 286 297) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L154(lines 154 156) no Hoare annotation was computed. [2020-07-20 01:42:56,426 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (= 0 main_~q~0) (<= main_~this_state~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-07-20 01:42:56,426 INFO L268 CegarLoopResult]: For program point L22-3(lines 22 385) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L270(lines 270 272) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L138(lines 138 140) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L254(lines 254 256) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L370(lines 370 372) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L238(lines 238 240) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L106(lines 106 108) no Hoare annotation was computed. [2020-07-20 01:42:56,427 INFO L268 CegarLoopResult]: For program point L354(lines 354 356) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L222(lines 222 224) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L338(lines 338 340) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L206(lines 206 208) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L322(lines 322 324) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L190(lines 190 192) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L306(lines 306 308) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L290(lines 290 292) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L27(lines 27 46) no Hoare annotation was computed. [2020-07-20 01:42:56,428 INFO L268 CegarLoopResult]: For program point L28(lines 28 43) no Hoare annotation was computed. [2020-07-20 01:42:56,429 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) no Hoare annotation was computed. [2020-07-20 01:42:56,429 INFO L268 CegarLoopResult]: For program point L30(lines 30 41) no Hoare annotation was computed. [2020-07-20 01:42:56,429 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-07-20 01:42:56,429 INFO L268 CegarLoopResult]: For program point L80(lines 80 95) no Hoare annotation was computed. [2020-07-20 01:42:56,429 INFO L268 CegarLoopResult]: For program point L47(lines 47 98) no Hoare annotation was computed. [2020-07-20 01:42:56,429 INFO L268 CegarLoopResult]: For program point L64(lines 64 79) no Hoare annotation was computed. [2020-07-20 01:42:56,429 INFO L268 CegarLoopResult]: For program point L48(lines 48 63) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L164(lines 164 179) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L148(lines 148 163) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L82(lines 82 93) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L264(lines 264 279) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L132(lines 132 147) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L99(lines 99 182) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L66(lines 66 77) no Hoare annotation was computed. [2020-07-20 01:42:56,430 INFO L268 CegarLoopResult]: For program point L248(lines 248 263) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L116(lines 116 131) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L50(lines 50 61) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L364(lines 364 379) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L232(lines 232 247) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L166(lines 166 177) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L100(lines 100 115) no Hoare annotation was computed. [2020-07-20 01:42:56,431 INFO L268 CegarLoopResult]: For program point L34(lines 34 36) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and (= 0 main_~q~0) .cse0) (and (= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) (and .cse0 (= 2 main_~q~0)))) [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L348(lines 348 363) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L216(lines 216 231) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L183(lines 183 282) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L150(lines 150 161) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L332(lines 332 347) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L266(lines 266 277) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L200(lines 200 215) no Hoare annotation was computed. [2020-07-20 01:42:56,432 INFO L268 CegarLoopResult]: For program point L134(lines 134 145) no Hoare annotation was computed. [2020-07-20 01:42:56,449 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 01:42:56 BoogieIcfgContainer [2020-07-20 01:42:56,450 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 01:42:56,453 INFO L168 Benchmark]: Toolchain (without parser) took 4530.09 ms. Allocated memory was 143.7 MB in the beginning and 250.1 MB in the end (delta: 106.4 MB). Free memory was 99.7 MB in the beginning and 185.5 MB in the end (delta: -85.8 MB). Peak memory consumption was 20.6 MB. Max. memory is 7.1 GB. [2020-07-20 01:42:56,454 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 143.7 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 01:42:56,455 INFO L168 Benchmark]: CACSL2BoogieTranslator took 431.28 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 179.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-07-20 01:42:56,456 INFO L168 Benchmark]: Boogie Preprocessor took 50.78 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 01:42:56,457 INFO L168 Benchmark]: RCFGBuilder took 646.49 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 148.8 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. [2020-07-20 01:42:56,458 INFO L168 Benchmark]: TraceAbstraction took 3394.42 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 148.1 MB in the beginning and 185.5 MB in the end (delta: -37.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-07-20 01:42:56,462 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 143.7 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 431.28 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 99.3 MB in the beginning and 179.3 MB in the end (delta: -80.0 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 50.78 ms. Allocated memory is still 200.8 MB. Free memory was 179.3 MB in the beginning and 177.3 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 646.49 ms. Allocated memory is still 200.8 MB. Free memory was 177.3 MB in the beginning and 148.8 MB in the end (delta: 28.5 MB). Peak memory consumption was 28.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3394.42 ms. Allocated memory was 200.8 MB in the beginning and 250.1 MB in the end (delta: 49.3 MB). Free memory was 148.1 MB in the beginning and 185.5 MB in the end (delta: -37.4 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: 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: 22]: Loop Invariant Derived loop invariant: (((0 == q && this_state <= 0) || (3 == q && 2 == this_state)) || (4 <= q && 3 == this_state)) || (this_state <= 0 && 2 == q) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (0 == q && this_state <= 0) || (4 <= q && 3 == this_state) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 83 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1008 SDtfs, 1441 SDslu, 73 SDs, 0 SdLazy, 634 SolverSat, 96 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=108occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 28 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 13 NumberOfFragments, 67 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 153 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 277 NumberOfCodeBlocks, 277 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 266 ConstructedInterpolants, 0 QuantifiedInterpolants, 15354 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 55/55 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...