/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/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 02:10:30,303 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 02:10:30,307 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 02:10:30,325 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 02:10:30,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 02:10:30,328 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 02:10:30,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 02:10:30,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 02:10:30,337 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 02:10:30,342 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 02:10:30,343 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 02:10:30,344 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 02:10:30,344 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 02:10:30,345 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 02:10:30,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 02:10:30,349 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 02:10:30,350 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 02:10:30,351 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 02:10:30,355 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 02:10:30,358 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 02:10:30,362 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 02:10:30,364 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 02:10:30,365 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 02:10:30,369 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 02:10:30,372 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 02:10:30,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 02:10:30,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 02:10:30,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 02:10:30,391 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 02:10:30,409 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 02:10:30,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 02:10:30,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 02:10:30,413 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 02:10:30,413 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 02:10:30,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 02:10:30,413 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 02:10:30,414 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 02:10:30,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 02:10:30,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 02:10:30,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 02:10:30,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 02:10:30,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 02:10:30,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 02:10:30,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 02:10:30,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 02:10:30,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 02:10:30,417 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 02:10:30,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 02:10:30,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 02:10:30,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 02:10:30,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 02:10:30,418 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 02:10:30,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 02:10:30,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 02:10:30,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 02:10:30,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 02:10:30,419 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 02:10:30,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 02:10:30,419 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 02:10:30,724 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 02:10:30,736 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 02:10:30,740 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 02:10:30,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 02:10:30,742 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 02:10:30,743 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-07-20 02:10:30,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7afc803/aa3b93c1dd8b4124b1f8a1f40d538f2e/FLAG7e384b735 [2020-07-20 02:10:31,487 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 02:10:31,488 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-07-20 02:10:31,505 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7afc803/aa3b93c1dd8b4124b1f8a1f40d538f2e/FLAG7e384b735 [2020-07-20 02:10:31,668 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6b7afc803/aa3b93c1dd8b4124b1f8a1f40d538f2e [2020-07-20 02:10:31,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 02:10:31,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 02:10:31,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 02:10:31,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 02:10:31,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 02:10:31,686 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:10:31" (1/1) ... [2020-07-20 02:10:31,689 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@683bfa51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:31, skipping insertion in model container [2020-07-20 02:10:31,689 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:10:31" (1/1) ... [2020-07-20 02:10:31,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 02:10:31,802 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 02:10:32,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:10:32,917 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 02:10:33,370 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:10:33,406 INFO L208 MainTranslator]: Completed translation [2020-07-20 02:10:33,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33 WrapperNode [2020-07-20 02:10:33,408 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 02:10:33,409 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 02:10:33,409 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 02:10:33,409 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 02:10:33,428 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,430 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,488 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,566 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,600 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (1/1) ... [2020-07-20 02:10:33,611 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 02:10:33,612 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 02:10:33,612 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 02:10:33,612 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 02:10:33,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (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 02:10:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 02:10:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 02:10:33,682 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 02:10:33,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 02:10:33,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 02:10:33,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 02:10:33,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 02:10:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 02:10:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 02:10:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 02:10:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 02:10:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 02:10:33,683 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 02:10:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 02:10:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 02:10:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 02:10:33,684 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 02:10:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 02:10:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 02:10:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 02:10:33,685 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 02:10:36,173 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 02:10:36,174 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 02:10:36,188 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:10:36 BoogieIcfgContainer [2020-07-20 02:10:36,189 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 02:10:36,190 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 02:10:36,190 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 02:10:36,193 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 02:10:36,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:10:31" (1/3) ... [2020-07-20 02:10:36,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252f813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:10:36, skipping insertion in model container [2020-07-20 02:10:36,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:10:33" (2/3) ... [2020-07-20 02:10:36,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@252f813d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:10:36, skipping insertion in model container [2020-07-20 02:10:36,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:10:36" (3/3) ... [2020-07-20 02:10:36,197 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2020-07-20 02:10:36,208 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 02:10:36,217 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 02:10:36,232 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 02:10:36,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 02:10:36,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 02:10:36,261 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 02:10:36,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 02:10:36,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 02:10:36,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 02:10:36,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 02:10:36,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 02:10:36,295 INFO L276 IsEmpty]: Start isEmpty. Operand 795 states. [2020-07-20 02:10:36,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-07-20 02:10:36,326 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:36,328 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:36,328 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:36,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:36,335 INFO L82 PathProgramCache]: Analyzing trace with hash -2046950044, now seen corresponding path program 1 times [2020-07-20 02:10:36,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:36,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718391607] [2020-07-20 02:10:36,346 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:10:37,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:38,379 WARN L193 SmtUtils]: Spent 495.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:10:38,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:38,605 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 02:10:38,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718391607] [2020-07-20 02:10:38,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:38,608 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:10:38,609 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054725700] [2020-07-20 02:10:38,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:10:38,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:38,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:10:38,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:10:38,632 INFO L87 Difference]: Start difference. First operand 795 states. Second operand 5 states. [2020-07-20 02:10:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:46,994 INFO L93 Difference]: Finished difference Result 2333 states and 4147 transitions. [2020-07-20 02:10:46,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:10:46,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2020-07-20 02:10:46,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:47,030 INFO L225 Difference]: With dead ends: 2333 [2020-07-20 02:10:47,031 INFO L226 Difference]: Without dead ends: 1545 [2020-07-20 02:10:47,041 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:10:47,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1545 states. [2020-07-20 02:10:47,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1545 to 1543. [2020-07-20 02:10:47,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1543 states. [2020-07-20 02:10:47,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2401 transitions. [2020-07-20 02:10:47,202 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2401 transitions. Word has length 324 [2020-07-20 02:10:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:47,203 INFO L479 AbstractCegarLoop]: Abstraction has 1543 states and 2401 transitions. [2020-07-20 02:10:47,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:10:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2401 transitions. [2020-07-20 02:10:47,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 02:10:47,213 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:47,213 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:47,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 02:10:47,214 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:47,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:47,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1516440759, now seen corresponding path program 1 times [2020-07-20 02:10:47,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:47,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546899434] [2020-07-20 02:10:47,215 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:10:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:48,002 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:10:48,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:48,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:10:48,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546899434] [2020-07-20 02:10:48,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:48,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:48,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621302628] [2020-07-20 02:10:48,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:48,360 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:48,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:48,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:48,361 INFO L87 Difference]: Start difference. First operand 1543 states and 2401 transitions. Second operand 4 states. [2020-07-20 02:10:57,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:57,194 INFO L93 Difference]: Finished difference Result 4438 states and 6875 transitions. [2020-07-20 02:10:57,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:10:57,195 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 02:10:57,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:57,212 INFO L225 Difference]: With dead ends: 4438 [2020-07-20 02:10:57,212 INFO L226 Difference]: Without dead ends: 3024 [2020-07-20 02:10:57,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:57,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3024 states. [2020-07-20 02:10:57,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3024 to 3022. [2020-07-20 02:10:57,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3022 states. [2020-07-20 02:10:57,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3022 states to 3022 states and 4679 transitions. [2020-07-20 02:10:57,343 INFO L78 Accepts]: Start accepts. Automaton has 3022 states and 4679 transitions. Word has length 326 [2020-07-20 02:10:57,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:57,343 INFO L479 AbstractCegarLoop]: Abstraction has 3022 states and 4679 transitions. [2020-07-20 02:10:57,344 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:57,344 INFO L276 IsEmpty]: Start isEmpty. Operand 3022 states and 4679 transitions. [2020-07-20 02:10:57,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-07-20 02:10:57,353 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:57,353 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:57,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 02:10:57,354 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:57,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:57,354 INFO L82 PathProgramCache]: Analyzing trace with hash -545695684, now seen corresponding path program 1 times [2020-07-20 02:10:57,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:57,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945519604] [2020-07-20 02:10:57,356 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:10:57,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:57,893 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:10:57,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:57,988 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 02:10:57,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945519604] [2020-07-20 02:10:57,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:57,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:57,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261286821] [2020-07-20 02:10:57,990 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:57,990 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:57,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:57,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:57,991 INFO L87 Difference]: Start difference. First operand 3022 states and 4679 transitions. Second operand 4 states. [2020-07-20 02:11:06,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:06,179 INFO L93 Difference]: Finished difference Result 8991 states and 13913 transitions. [2020-07-20 02:11:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:06,179 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2020-07-20 02:11:06,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:06,209 INFO L225 Difference]: With dead ends: 8991 [2020-07-20 02:11:06,210 INFO L226 Difference]: Without dead ends: 6011 [2020-07-20 02:11:06,217 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:06,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6011 states. [2020-07-20 02:11:06,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6011 to 3041. [2020-07-20 02:11:06,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3041 states. [2020-07-20 02:11:06,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3041 states to 3041 states and 4707 transitions. [2020-07-20 02:11:06,378 INFO L78 Accepts]: Start accepts. Automaton has 3041 states and 4707 transitions. Word has length 326 [2020-07-20 02:11:06,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:06,379 INFO L479 AbstractCegarLoop]: Abstraction has 3041 states and 4707 transitions. [2020-07-20 02:11:06,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:06,379 INFO L276 IsEmpty]: Start isEmpty. Operand 3041 states and 4707 transitions. [2020-07-20 02:11:06,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-07-20 02:11:06,391 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:06,391 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:06,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 02:11:06,392 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:06,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:06,392 INFO L82 PathProgramCache]: Analyzing trace with hash -441096328, now seen corresponding path program 1 times [2020-07-20 02:11:06,392 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:06,393 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595402841] [2020-07-20 02:11:06,393 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:06,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:06,954 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:07,086 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 02:11:07,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595402841] [2020-07-20 02:11:07,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:07,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:07,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530786205] [2020-07-20 02:11:07,087 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:07,087 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:07,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:07,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:07,088 INFO L87 Difference]: Start difference. First operand 3041 states and 4707 transitions. Second operand 4 states. [2020-07-20 02:11:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:14,928 INFO L93 Difference]: Finished difference Result 9010 states and 13934 transitions. [2020-07-20 02:11:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:14,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2020-07-20 02:11:14,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:14,955 INFO L225 Difference]: With dead ends: 9010 [2020-07-20 02:11:14,955 INFO L226 Difference]: Without dead ends: 6029 [2020-07-20 02:11:14,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:14,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6029 states. [2020-07-20 02:11:15,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6029 to 3059. [2020-07-20 02:11:15,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3059 states. [2020-07-20 02:11:15,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3059 states to 3059 states and 4728 transitions. [2020-07-20 02:11:15,106 INFO L78 Accepts]: Start accepts. Automaton has 3059 states and 4728 transitions. Word has length 327 [2020-07-20 02:11:15,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:15,106 INFO L479 AbstractCegarLoop]: Abstraction has 3059 states and 4728 transitions. [2020-07-20 02:11:15,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:15,107 INFO L276 IsEmpty]: Start isEmpty. Operand 3059 states and 4728 transitions. [2020-07-20 02:11:15,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 02:11:15,116 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:15,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:15,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 02:11:15,117 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:15,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:15,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1648776142, now seen corresponding path program 1 times [2020-07-20 02:11:15,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:15,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652938589] [2020-07-20 02:11:15,118 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:15,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:15,816 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:15,991 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 02:11:15,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652938589] [2020-07-20 02:11:15,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:15,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:15,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263336153] [2020-07-20 02:11:15,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:15,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:15,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:15,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:15,994 INFO L87 Difference]: Start difference. First operand 3059 states and 4728 transitions. Second operand 4 states. [2020-07-20 02:11:23,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:23,995 INFO L93 Difference]: Finished difference Result 8718 states and 13409 transitions. [2020-07-20 02:11:23,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:23,996 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2020-07-20 02:11:23,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:24,025 INFO L225 Difference]: With dead ends: 8718 [2020-07-20 02:11:24,025 INFO L226 Difference]: Without dead ends: 5904 [2020-07-20 02:11:24,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:24,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5904 states. [2020-07-20 02:11:24,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5904 to 5902. [2020-07-20 02:11:24,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5902 states. [2020-07-20 02:11:24,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5902 states to 5902 states and 9056 transitions. [2020-07-20 02:11:24,321 INFO L78 Accepts]: Start accepts. Automaton has 5902 states and 9056 transitions. Word has length 328 [2020-07-20 02:11:24,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:24,323 INFO L479 AbstractCegarLoop]: Abstraction has 5902 states and 9056 transitions. [2020-07-20 02:11:24,323 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:24,323 INFO L276 IsEmpty]: Start isEmpty. Operand 5902 states and 9056 transitions. [2020-07-20 02:11:24,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-07-20 02:11:24,337 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:24,337 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:24,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 02:11:24,338 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:24,339 INFO L82 PathProgramCache]: Analyzing trace with hash 157244175, now seen corresponding path program 1 times [2020-07-20 02:11:24,339 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:24,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128754693] [2020-07-20 02:11:24,340 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:24,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:25,247 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:25,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:25,336 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 02:11:25,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128754693] [2020-07-20 02:11:25,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:25,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:11:25,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414569251] [2020-07-20 02:11:25,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:11:25,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:25,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:11:25,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:11:25,339 INFO L87 Difference]: Start difference. First operand 5902 states and 9056 transitions. Second operand 5 states. [2020-07-20 02:11:31,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:31,108 INFO L93 Difference]: Finished difference Result 13189 states and 20201 transitions. [2020-07-20 02:11:31,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:11:31,109 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 328 [2020-07-20 02:11:31,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:31,136 INFO L225 Difference]: With dead ends: 13189 [2020-07-20 02:11:31,137 INFO L226 Difference]: Without dead ends: 6775 [2020-07-20 02:11:31,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:11:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6775 states. [2020-07-20 02:11:31,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6775 to 6773. [2020-07-20 02:11:31,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6773 states. [2020-07-20 02:11:31,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6773 states to 6773 states and 10350 transitions. [2020-07-20 02:11:31,409 INFO L78 Accepts]: Start accepts. Automaton has 6773 states and 10350 transitions. Word has length 328 [2020-07-20 02:11:31,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:31,409 INFO L479 AbstractCegarLoop]: Abstraction has 6773 states and 10350 transitions. [2020-07-20 02:11:31,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:11:31,410 INFO L276 IsEmpty]: Start isEmpty. Operand 6773 states and 10350 transitions. [2020-07-20 02:11:31,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 02:11:31,428 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:31,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:31,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 02:11:31,429 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:31,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:31,430 INFO L82 PathProgramCache]: Analyzing trace with hash -1619567406, now seen corresponding path program 1 times [2020-07-20 02:11:31,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:31,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504683096] [2020-07-20 02:11:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:31,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:31,984 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:31,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:32,069 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 02:11:32,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504683096] [2020-07-20 02:11:32,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:32,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:32,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678174343] [2020-07-20 02:11:32,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:32,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:32,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:32,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:32,072 INFO L87 Difference]: Start difference. First operand 6773 states and 10350 transitions. Second operand 4 states. [2020-07-20 02:11:36,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:36,678 INFO L93 Difference]: Finished difference Result 19447 states and 29573 transitions. [2020-07-20 02:11:36,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:36,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 02:11:36,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:36,708 INFO L225 Difference]: With dead ends: 19447 [2020-07-20 02:11:36,709 INFO L226 Difference]: Without dead ends: 13127 [2020-07-20 02:11:36,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:36,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13127 states. [2020-07-20 02:11:37,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13127 to 6831. [2020-07-20 02:11:37,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6831 states. [2020-07-20 02:11:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6831 states to 6831 states and 10425 transitions. [2020-07-20 02:11:37,127 INFO L78 Accepts]: Start accepts. Automaton has 6831 states and 10425 transitions. Word has length 330 [2020-07-20 02:11:37,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:37,128 INFO L479 AbstractCegarLoop]: Abstraction has 6831 states and 10425 transitions. [2020-07-20 02:11:37,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 6831 states and 10425 transitions. [2020-07-20 02:11:37,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 02:11:37,144 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:37,144 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:37,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 02:11:37,144 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:37,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:37,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1432284472, now seen corresponding path program 1 times [2020-07-20 02:11:37,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:37,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598779313] [2020-07-20 02:11:37,146 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:37,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:37,748 WARN L193 SmtUtils]: Spent 394.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:37,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:37,908 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 02:11:37,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598779313] [2020-07-20 02:11:37,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:37,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:11:37,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532373975] [2020-07-20 02:11:37,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:11:37,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:37,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:11:37,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:37,911 INFO L87 Difference]: Start difference. First operand 6831 states and 10425 transitions. Second operand 4 states. [2020-07-20 02:11:46,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:46,345 INFO L93 Difference]: Finished difference Result 19896 states and 30288 transitions. [2020-07-20 02:11:46,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:46,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 02:11:46,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:46,367 INFO L225 Difference]: With dead ends: 19896 [2020-07-20 02:11:46,368 INFO L226 Difference]: Without dead ends: 13350 [2020-07-20 02:11:46,380 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:46,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13350 states. [2020-07-20 02:11:46,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13350 to 13348. [2020-07-20 02:11:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13348 states. [2020-07-20 02:11:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13348 states to 13348 states and 20240 transitions. [2020-07-20 02:11:46,863 INFO L78 Accepts]: Start accepts. Automaton has 13348 states and 20240 transitions. Word has length 330 [2020-07-20 02:11:46,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:46,864 INFO L479 AbstractCegarLoop]: Abstraction has 13348 states and 20240 transitions. [2020-07-20 02:11:46,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 13348 states and 20240 transitions. [2020-07-20 02:11:47,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 02:11:47,003 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:47,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:47,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 02:11:47,004 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:47,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:47,005 INFO L82 PathProgramCache]: Analyzing trace with hash -491858715, now seen corresponding path program 1 times [2020-07-20 02:11:47,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:47,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329503399] [2020-07-20 02:11:47,006 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:47,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:47,790 WARN L193 SmtUtils]: Spent 381.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:47,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:47,895 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 02:11:47,895 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329503399] [2020-07-20 02:11:47,895 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:47,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:11:47,896 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879956331] [2020-07-20 02:11:47,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:11:47,897 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:47,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:11:47,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:11:47,898 INFO L87 Difference]: Start difference. First operand 13348 states and 20240 transitions. Second operand 5 states. [2020-07-20 02:11:54,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:54,449 INFO L93 Difference]: Finished difference Result 30452 states and 45989 transitions. [2020-07-20 02:11:54,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:11:54,452 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-07-20 02:11:54,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:54,476 INFO L225 Difference]: With dead ends: 30452 [2020-07-20 02:11:54,477 INFO L226 Difference]: Without dead ends: 15894 [2020-07-20 02:11:54,501 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:11:54,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15894 states. [2020-07-20 02:11:55,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15894 to 15892. [2020-07-20 02:11:55,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15892 states. [2020-07-20 02:11:55,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15892 states to 15892 states and 23961 transitions. [2020-07-20 02:11:55,780 INFO L78 Accepts]: Start accepts. Automaton has 15892 states and 23961 transitions. Word has length 330 [2020-07-20 02:11:55,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:55,780 INFO L479 AbstractCegarLoop]: Abstraction has 15892 states and 23961 transitions. [2020-07-20 02:11:55,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:11:55,781 INFO L276 IsEmpty]: Start isEmpty. Operand 15892 states and 23961 transitions. [2020-07-20 02:11:55,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 02:11:55,800 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:55,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:55,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 02:11:55,801 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:55,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:55,801 INFO L82 PathProgramCache]: Analyzing trace with hash 1136318819, now seen corresponding path program 1 times [2020-07-20 02:11:55,801 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:55,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039155819] [2020-07-20 02:11:55,802 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:11:56,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:56,692 WARN L193 SmtUtils]: Spent 409.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:11:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:56,818 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 02:11:56,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039155819] [2020-07-20 02:11:56,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:56,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:11:56,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142146028] [2020-07-20 02:11:56,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:11:56,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:56,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:11:56,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:11:56,821 INFO L87 Difference]: Start difference. First operand 15892 states and 23961 transitions. Second operand 5 states. [2020-07-20 02:12:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:06,725 INFO L93 Difference]: Finished difference Result 41545 states and 62089 transitions. [2020-07-20 02:12:06,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:12:06,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2020-07-20 02:12:06,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:06,762 INFO L225 Difference]: With dead ends: 41545 [2020-07-20 02:12:06,763 INFO L226 Difference]: Without dead ends: 27789 [2020-07-20 02:12:06,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:12:06,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27789 states. [2020-07-20 02:12:07,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27789 to 16491. [2020-07-20 02:12:07,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16491 states. [2020-07-20 02:12:07,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16491 states to 16491 states and 24849 transitions. [2020-07-20 02:12:07,625 INFO L78 Accepts]: Start accepts. Automaton has 16491 states and 24849 transitions. Word has length 330 [2020-07-20 02:12:07,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:07,625 INFO L479 AbstractCegarLoop]: Abstraction has 16491 states and 24849 transitions. [2020-07-20 02:12:07,625 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:12:07,625 INFO L276 IsEmpty]: Start isEmpty. Operand 16491 states and 24849 transitions. [2020-07-20 02:12:07,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2020-07-20 02:12:07,645 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:07,645 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:07,645 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 02:12:07,645 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:07,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:07,646 INFO L82 PathProgramCache]: Analyzing trace with hash -1227056241, now seen corresponding path program 1 times [2020-07-20 02:12:07,646 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:07,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155368688] [2020-07-20 02:12:07,646 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:12:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:08,251 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:12:08,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:08,344 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 02:12:08,344 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155368688] [2020-07-20 02:12:08,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:08,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:12:08,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461067136] [2020-07-20 02:12:08,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:12:08,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:08,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:12:08,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:08,347 INFO L87 Difference]: Start difference. First operand 16491 states and 24849 transitions. Second operand 4 states. [2020-07-20 02:12:15,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:15,336 INFO L93 Difference]: Finished difference Result 30491 states and 46183 transitions. [2020-07-20 02:12:15,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:12:15,337 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 330 [2020-07-20 02:12:15,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:15,354 INFO L225 Difference]: With dead ends: 30491 [2020-07-20 02:12:15,355 INFO L226 Difference]: Without dead ends: 20989 [2020-07-20 02:12:15,364 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20989 states. [2020-07-20 02:12:16,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20989 to 18395. [2020-07-20 02:12:16,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18395 states. [2020-07-20 02:12:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18395 states to 18395 states and 27871 transitions. [2020-07-20 02:12:16,092 INFO L78 Accepts]: Start accepts. Automaton has 18395 states and 27871 transitions. Word has length 330 [2020-07-20 02:12:16,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:16,093 INFO L479 AbstractCegarLoop]: Abstraction has 18395 states and 27871 transitions. [2020-07-20 02:12:16,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:12:16,093 INFO L276 IsEmpty]: Start isEmpty. Operand 18395 states and 27871 transitions. [2020-07-20 02:12:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 02:12:16,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:16,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:16,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 02:12:16,107 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash 2000347144, now seen corresponding path program 1 times [2020-07-20 02:12:16,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:16,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780596218] [2020-07-20 02:12:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:12:16,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:16,711 WARN L193 SmtUtils]: Spent 426.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:12:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:16,956 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 02:12:16,956 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780596218] [2020-07-20 02:12:16,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:16,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:12:16,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [620768795] [2020-07-20 02:12:16,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:12:16,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:16,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:12:16,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:16,958 INFO L87 Difference]: Start difference. First operand 18395 states and 27871 transitions. Second operand 4 states. [2020-07-20 02:12:23,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:23,813 INFO L93 Difference]: Finished difference Result 33823 states and 51649 transitions. [2020-07-20 02:12:23,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:12:23,814 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-20 02:12:23,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:23,840 INFO L225 Difference]: With dead ends: 33823 [2020-07-20 02:12:23,840 INFO L226 Difference]: Without dead ends: 23821 [2020-07-20 02:12:23,852 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:23,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23821 states. [2020-07-20 02:12:24,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23821 to 21819. [2020-07-20 02:12:24,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21819 states. [2020-07-20 02:12:24,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21819 states to 21819 states and 33359 transitions. [2020-07-20 02:12:24,835 INFO L78 Accepts]: Start accepts. Automaton has 21819 states and 33359 transitions. Word has length 332 [2020-07-20 02:12:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:24,836 INFO L479 AbstractCegarLoop]: Abstraction has 21819 states and 33359 transitions. [2020-07-20 02:12:24,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:12:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 21819 states and 33359 transitions. [2020-07-20 02:12:24,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2020-07-20 02:12:24,849 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:24,849 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:24,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 02:12:24,850 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:24,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:24,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2033012311, now seen corresponding path program 1 times [2020-07-20 02:12:24,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:24,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786783150] [2020-07-20 02:12:24,851 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:12:24,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:25,609 WARN L193 SmtUtils]: Spent 605.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:12:25,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:25,682 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 02:12:25,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786783150] [2020-07-20 02:12:25,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:25,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:12:25,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394175364] [2020-07-20 02:12:25,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:12:25,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:25,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:12:25,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:25,685 INFO L87 Difference]: Start difference. First operand 21819 states and 33359 transitions. Second operand 4 states. [2020-07-20 02:12:35,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:35,717 INFO L93 Difference]: Finished difference Result 59507 states and 90499 transitions. [2020-07-20 02:12:35,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:12:35,718 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2020-07-20 02:12:35,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:35,760 INFO L225 Difference]: With dead ends: 59507 [2020-07-20 02:12:35,760 INFO L226 Difference]: Without dead ends: 40395 [2020-07-20 02:12:35,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:35,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40395 states. [2020-07-20 02:12:36,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40395 to 22147. [2020-07-20 02:12:36,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22147 states. [2020-07-20 02:12:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22147 states to 22147 states and 33797 transitions. [2020-07-20 02:12:36,985 INFO L78 Accepts]: Start accepts. Automaton has 22147 states and 33797 transitions. Word has length 332 [2020-07-20 02:12:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:36,985 INFO L479 AbstractCegarLoop]: Abstraction has 22147 states and 33797 transitions. [2020-07-20 02:12:36,985 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:12:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 22147 states and 33797 transitions. [2020-07-20 02:12:37,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:12:37,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:37,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:37,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 02:12:37,001 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:37,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:37,002 INFO L82 PathProgramCache]: Analyzing trace with hash -273553115, now seen corresponding path program 1 times [2020-07-20 02:12:37,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:37,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040155213] [2020-07-20 02:12:37,002 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:12:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:37,627 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:12:37,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:37,739 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 02:12:37,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040155213] [2020-07-20 02:12:37,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:37,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:12:37,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630513575] [2020-07-20 02:12:37,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:12:37,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:37,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:12:37,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:37,742 INFO L87 Difference]: Start difference. First operand 22147 states and 33797 transitions. Second operand 4 states. [2020-07-20 02:12:48,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:48,173 INFO L93 Difference]: Finished difference Result 59783 states and 90773 transitions. [2020-07-20 02:12:48,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:12:48,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2020-07-20 02:12:48,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:48,226 INFO L225 Difference]: With dead ends: 59783 [2020-07-20 02:12:48,226 INFO L226 Difference]: Without dead ends: 40691 [2020-07-20 02:12:48,250 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:12:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40691 states. [2020-07-20 02:12:50,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40691 to 22475. [2020-07-20 02:12:50,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22475 states. [2020-07-20 02:12:50,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22475 states to 22475 states and 34165 transitions. [2020-07-20 02:12:50,172 INFO L78 Accepts]: Start accepts. Automaton has 22475 states and 34165 transitions. Word has length 333 [2020-07-20 02:12:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:50,172 INFO L479 AbstractCegarLoop]: Abstraction has 22475 states and 34165 transitions. [2020-07-20 02:12:50,172 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:12:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 22475 states and 34165 transitions. [2020-07-20 02:12:50,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:12:50,191 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:50,191 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:50,191 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 02:12:50,191 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:50,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:50,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1275140562, now seen corresponding path program 1 times [2020-07-20 02:12:50,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:50,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726762951] [2020-07-20 02:12:50,193 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:12:50,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:51,212 WARN L193 SmtUtils]: Spent 459.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:12:51,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:51,338 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 02:12:51,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726762951] [2020-07-20 02:12:51,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:51,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-20 02:12:51,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518195445] [2020-07-20 02:12:51,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 02:12:51,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:51,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 02:12:51,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-07-20 02:12:51,341 INFO L87 Difference]: Start difference. First operand 22475 states and 34165 transitions. Second operand 10 states. [2020-07-20 02:12:51,870 WARN L193 SmtUtils]: Spent 456.00 ms on a formula simplification that was a NOOP. DAG size: 288 [2020-07-20 02:13:02,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:13:02,455 INFO L93 Difference]: Finished difference Result 65989 states and 102088 transitions. [2020-07-20 02:13:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-20 02:13:02,456 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 333 [2020-07-20 02:13:02,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:13:02,512 INFO L225 Difference]: With dead ends: 65989 [2020-07-20 02:13:02,512 INFO L226 Difference]: Without dead ends: 51735 [2020-07-20 02:13:02,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2020-07-20 02:13:02,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51735 states. [2020-07-20 02:13:06,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51735 to 41573. [2020-07-20 02:13:06,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41573 states. [2020-07-20 02:13:06,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41573 states to 41573 states and 63357 transitions. [2020-07-20 02:13:06,123 INFO L78 Accepts]: Start accepts. Automaton has 41573 states and 63357 transitions. Word has length 333 [2020-07-20 02:13:06,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:13:06,124 INFO L479 AbstractCegarLoop]: Abstraction has 41573 states and 63357 transitions. [2020-07-20 02:13:06,124 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 02:13:06,124 INFO L276 IsEmpty]: Start isEmpty. Operand 41573 states and 63357 transitions. [2020-07-20 02:13:06,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:13:06,140 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:13:06,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:06,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 02:13:06,141 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:13:06,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:13:06,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1537943031, now seen corresponding path program 1 times [2020-07-20 02:13:06,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:13:06,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088616487] [2020-07-20 02:13:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:13:06,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:06,909 WARN L193 SmtUtils]: Spent 424.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:13:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:07,021 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 02:13:07,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088616487] [2020-07-20 02:13:07,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:13:07,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:13:07,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396492492] [2020-07-20 02:13:07,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:13:07,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:13:07,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:13:07,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:13:07,024 INFO L87 Difference]: Start difference. First operand 41573 states and 63357 transitions. Second operand 5 states. [2020-07-20 02:13:07,493 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 284 [2020-07-20 02:13:15,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:13:15,578 INFO L93 Difference]: Finished difference Result 70055 states and 109281 transitions. [2020-07-20 02:13:15,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:13:15,579 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-07-20 02:13:15,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:13:15,629 INFO L225 Difference]: With dead ends: 70055 [2020-07-20 02:13:15,629 INFO L226 Difference]: Without dead ends: 49391 [2020-07-20 02:13:15,648 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:13:15,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49391 states. [2020-07-20 02:13:18,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49391 to 49389. [2020-07-20 02:13:18,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49389 states. [2020-07-20 02:13:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49389 states to 49389 states and 75753 transitions. [2020-07-20 02:13:18,774 INFO L78 Accepts]: Start accepts. Automaton has 49389 states and 75753 transitions. Word has length 333 [2020-07-20 02:13:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:13:18,774 INFO L479 AbstractCegarLoop]: Abstraction has 49389 states and 75753 transitions. [2020-07-20 02:13:18,775 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:13:18,775 INFO L276 IsEmpty]: Start isEmpty. Operand 49389 states and 75753 transitions. [2020-07-20 02:13:18,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2020-07-20 02:13:18,791 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:13:18,792 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:18,792 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 02:13:18,792 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:13:18,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:13:18,792 INFO L82 PathProgramCache]: Analyzing trace with hash -1942664128, now seen corresponding path program 1 times [2020-07-20 02:13:18,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:13:18,792 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802659494] [2020-07-20 02:13:18,793 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:13:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:19,590 WARN L193 SmtUtils]: Spent 418.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:13:19,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:19,694 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 02:13:19,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802659494] [2020-07-20 02:13:19,694 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:13:19,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:13:19,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724203776] [2020-07-20 02:13:19,695 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:13:19,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:13:19,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:13:19,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:13:19,696 INFO L87 Difference]: Start difference. First operand 49389 states and 75753 transitions. Second operand 5 states. [2020-07-20 02:13:34,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:13:34,868 INFO L93 Difference]: Finished difference Result 144252 states and 220978 transitions. [2020-07-20 02:13:34,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:13:34,869 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 333 [2020-07-20 02:13:34,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:13:34,974 INFO L225 Difference]: With dead ends: 144252 [2020-07-20 02:13:34,975 INFO L226 Difference]: Without dead ends: 95694 [2020-07-20 02:13:35,010 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:13:35,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95694 states. [2020-07-20 02:13:42,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95694 to 95692. [2020-07-20 02:13:42,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95692 states. [2020-07-20 02:13:43,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95692 states to 95692 states and 145852 transitions. [2020-07-20 02:13:43,119 INFO L78 Accepts]: Start accepts. Automaton has 95692 states and 145852 transitions. Word has length 333 [2020-07-20 02:13:43,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:13:43,119 INFO L479 AbstractCegarLoop]: Abstraction has 95692 states and 145852 transitions. [2020-07-20 02:13:43,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:13:43,120 INFO L276 IsEmpty]: Start isEmpty. Operand 95692 states and 145852 transitions. [2020-07-20 02:13:43,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 335 [2020-07-20 02:13:43,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:13:43,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:43,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 02:13:43,153 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:13:43,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:13:43,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1968714646, now seen corresponding path program 1 times [2020-07-20 02:13:43,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:13:43,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182141383] [2020-07-20 02:13:43,154 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:13:43,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:43,891 WARN L193 SmtUtils]: Spent 428.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:13:43,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:43,968 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 02:13:43,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182141383] [2020-07-20 02:13:43,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:13:43,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:13:43,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379697137] [2020-07-20 02:13:43,969 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:13:43,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:13:43,970 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:13:43,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:13:43,970 INFO L87 Difference]: Start difference. First operand 95692 states and 145852 transitions. Second operand 5 states. [2020-07-20 02:13:59,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:13:59,273 INFO L93 Difference]: Finished difference Result 137921 states and 210173 transitions. [2020-07-20 02:13:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:13:59,275 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 334 [2020-07-20 02:13:59,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:13:59,387 INFO L225 Difference]: With dead ends: 137921 [2020-07-20 02:13:59,387 INFO L226 Difference]: Without dead ends: 95694 [2020-07-20 02:13:59,428 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:13:59,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95694 states. [2020-07-20 02:14:07,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95694 to 91406. [2020-07-20 02:14:07,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91406 states. [2020-07-20 02:14:07,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91406 states to 91406 states and 139668 transitions. [2020-07-20 02:14:07,797 INFO L78 Accepts]: Start accepts. Automaton has 91406 states and 139668 transitions. Word has length 334 [2020-07-20 02:14:07,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:14:07,797 INFO L479 AbstractCegarLoop]: Abstraction has 91406 states and 139668 transitions. [2020-07-20 02:14:07,797 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:14:07,798 INFO L276 IsEmpty]: Start isEmpty. Operand 91406 states and 139668 transitions. [2020-07-20 02:14:07,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 02:14:07,843 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:14:07,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:07,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 02:14:07,844 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:14:07,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:14:07,844 INFO L82 PathProgramCache]: Analyzing trace with hash -1241415225, now seen corresponding path program 1 times [2020-07-20 02:14:07,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:14:07,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022301879] [2020-07-20 02:14:07,845 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:14:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:08,481 WARN L193 SmtUtils]: Spent 511.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:14:08,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:08,583 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 02:14:08,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1022301879] [2020-07-20 02:14:08,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:14:08,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:14:08,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698886598] [2020-07-20 02:14:08,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:14:08,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:14:08,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:14:08,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:14:08,594 INFO L87 Difference]: Start difference. First operand 91406 states and 139668 transitions. Second operand 4 states. [2020-07-20 02:14:33,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:14:33,567 INFO L93 Difference]: Finished difference Result 270320 states and 412826 transitions. [2020-07-20 02:14:33,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:14:33,568 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 02:14:33,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:14:33,784 INFO L225 Difference]: With dead ends: 270320 [2020-07-20 02:14:33,785 INFO L226 Difference]: Without dead ends: 180528 [2020-07-20 02:14:33,869 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:14:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180528 states. [2020-07-20 02:14:41,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180528 to 91750. [2020-07-20 02:14:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91750 states. [2020-07-20 02:14:41,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91750 states to 91750 states and 140036 transitions. [2020-07-20 02:14:41,346 INFO L78 Accepts]: Start accepts. Automaton has 91750 states and 140036 transitions. Word has length 337 [2020-07-20 02:14:41,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:14:41,346 INFO L479 AbstractCegarLoop]: Abstraction has 91750 states and 140036 transitions. [2020-07-20 02:14:41,346 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:14:41,346 INFO L276 IsEmpty]: Start isEmpty. Operand 91750 states and 140036 transitions. [2020-07-20 02:14:41,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-07-20 02:14:41,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:14:41,377 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:41,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-20 02:14:41,378 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:14:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:14:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1683426062, now seen corresponding path program 1 times [2020-07-20 02:14:41,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:14:41,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293112120] [2020-07-20 02:14:41,384 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:14:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:42,242 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:14:42,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:42,340 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 02:14:42,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293112120] [2020-07-20 02:14:42,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:14:42,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:14:42,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961461261] [2020-07-20 02:14:42,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:14:42,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:14:42,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:14:42,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:14:42,342 INFO L87 Difference]: Start difference. First operand 91750 states and 140036 transitions. Second operand 4 states. [2020-07-20 02:15:06,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:06,920 INFO L93 Difference]: Finished difference Result 264309 states and 403517 transitions. [2020-07-20 02:15:06,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:15:06,921 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 337 [2020-07-20 02:15:06,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:07,178 INFO L225 Difference]: With dead ends: 264309 [2020-07-20 02:15:07,178 INFO L226 Difference]: Without dead ends: 177799 [2020-07-20 02:15:07,253 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:07,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177799 states. [2020-07-20 02:15:25,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177799 to 177797. [2020-07-20 02:15:25,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177797 states. [2020-07-20 02:15:25,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177797 states to 177797 states and 270305 transitions. [2020-07-20 02:15:25,601 INFO L78 Accepts]: Start accepts. Automaton has 177797 states and 270305 transitions. Word has length 337 [2020-07-20 02:15:25,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:15:25,601 INFO L479 AbstractCegarLoop]: Abstraction has 177797 states and 270305 transitions. [2020-07-20 02:15:25,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:15:25,601 INFO L276 IsEmpty]: Start isEmpty. Operand 177797 states and 270305 transitions. [2020-07-20 02:15:25,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 02:15:25,670 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:15:25,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:15:25,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-20 02:15:25,671 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:15:25,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:15:25,671 INFO L82 PathProgramCache]: Analyzing trace with hash 1966579330, now seen corresponding path program 1 times [2020-07-20 02:15:25,671 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:15:25,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878426497] [2020-07-20 02:15:25,672 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:15:25,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:26,257 WARN L193 SmtUtils]: Spent 458.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:15:26,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:15:26,359 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 02:15:26,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878426497] [2020-07-20 02:15:26,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:15:26,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:15:26,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505114010] [2020-07-20 02:15:26,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:15:26,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:15:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:15:26,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:15:26,362 INFO L87 Difference]: Start difference. First operand 177797 states and 270305 transitions. Second operand 4 states. [2020-07-20 02:16:06,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:06,816 INFO L93 Difference]: Finished difference Result 512409 states and 777349 transitions. [2020-07-20 02:16:06,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:16:06,817 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 339 [2020-07-20 02:16:06,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:07,315 INFO L225 Difference]: With dead ends: 512409 [2020-07-20 02:16:07,315 INFO L226 Difference]: Without dead ends: 337394 [2020-07-20 02:16:07,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:16:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337394 states. [2020-07-20 02:16:39,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337394 to 337392. [2020-07-20 02:16:39,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337392 states. [2020-07-20 02:16:40,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337392 states to 337392 states and 507965 transitions. [2020-07-20 02:16:40,187 INFO L78 Accepts]: Start accepts. Automaton has 337392 states and 507965 transitions. Word has length 339 [2020-07-20 02:16:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:40,187 INFO L479 AbstractCegarLoop]: Abstraction has 337392 states and 507965 transitions. [2020-07-20 02:16:40,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:16:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 337392 states and 507965 transitions. [2020-07-20 02:16:40,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 340 [2020-07-20 02:16:40,312 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:40,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:40,312 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-07-20 02:16:40,312 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:40,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:40,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1882657510, now seen corresponding path program 1 times [2020-07-20 02:16:40,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:40,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767137190] [2020-07-20 02:16:40,314 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:16:40,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:41,043 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:16:41,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:41,120 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 02:16:41,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767137190] [2020-07-20 02:16:41,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:41,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:16:41,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389662642] [2020-07-20 02:16:41,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:16:41,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:41,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:16:41,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:16:41,122 INFO L87 Difference]: Start difference. First operand 337392 states and 507965 transitions. Second operand 5 states. [2020-07-20 02:17:25,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:17:25,251 INFO L93 Difference]: Finished difference Result 699505 states and 1050397 transitions. [2020-07-20 02:17:25,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:17:25,253 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 339 [2020-07-20 02:17:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:17:25,714 INFO L225 Difference]: With dead ends: 699505 [2020-07-20 02:17:25,714 INFO L226 Difference]: Without dead ends: 352215 [2020-07-20 02:17:25,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:17:26,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 352215 states. [2020-07-20 02:18:08,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 352215 to 352213. [2020-07-20 02:18:08,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 352213 states. [2020-07-20 02:18:09,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352213 states to 352213 states and 526237 transitions. [2020-07-20 02:18:09,518 INFO L78 Accepts]: Start accepts. Automaton has 352213 states and 526237 transitions. Word has length 339 [2020-07-20 02:18:09,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:18:09,518 INFO L479 AbstractCegarLoop]: Abstraction has 352213 states and 526237 transitions. [2020-07-20 02:18:09,518 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:18:09,518 INFO L276 IsEmpty]: Start isEmpty. Operand 352213 states and 526237 transitions. [2020-07-20 02:18:09,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 02:18:09,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:18:09,656 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:18:09,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-07-20 02:18:09,656 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:18:09,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:18:09,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1719490276, now seen corresponding path program 1 times [2020-07-20 02:18:09,657 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:18:09,657 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814068993] [2020-07-20 02:18:09,657 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:18:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:10,323 WARN L193 SmtUtils]: Spent 445.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:18:10,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:18:10,393 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 02:18:10,393 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814068993] [2020-07-20 02:18:10,393 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:18:10,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:18:10,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831958124] [2020-07-20 02:18:10,394 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:18:10,394 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:18:10,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:18:10,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:18:10,395 INFO L87 Difference]: Start difference. First operand 352213 states and 526237 transitions. Second operand 4 states. [2020-07-20 02:19:14,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:19:14,350 INFO L93 Difference]: Finished difference Result 846681 states and 1282567 transitions. [2020-07-20 02:19:14,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:19:14,351 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-20 02:19:14,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:19:15,125 INFO L225 Difference]: With dead ends: 846681 [2020-07-20 02:19:15,125 INFO L226 Difference]: Without dead ends: 557571 [2020-07-20 02:19:15,851 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:19:16,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 557571 states. [2020-07-20 02:20:13,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 557571 to 514081. [2020-07-20 02:20:13,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 514081 states. [2020-07-20 02:20:14,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514081 states to 514081 states and 776541 transitions. [2020-07-20 02:20:14,393 INFO L78 Accepts]: Start accepts. Automaton has 514081 states and 776541 transitions. Word has length 340 [2020-07-20 02:20:14,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:20:14,393 INFO L479 AbstractCegarLoop]: Abstraction has 514081 states and 776541 transitions. [2020-07-20 02:20:14,393 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:20:14,393 INFO L276 IsEmpty]: Start isEmpty. Operand 514081 states and 776541 transitions. [2020-07-20 02:20:14,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 341 [2020-07-20 02:20:14,521 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:20:14,521 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:20:14,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-07-20 02:20:14,521 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:20:14,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:20:14,522 INFO L82 PathProgramCache]: Analyzing trace with hash 989201276, now seen corresponding path program 1 times [2020-07-20 02:20:14,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:20:14,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748863463] [2020-07-20 02:20:14,522 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@580723c4 [2020-07-20 02:20:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:15,044 WARN L193 SmtUtils]: Spent 423.00 ms on a formula simplification that was a NOOP. DAG size: 283 [2020-07-20 02:20:15,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:15,117 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 02:20:15,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748863463] [2020-07-20 02:20:15,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:20:15,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:20:15,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925959359] [2020-07-20 02:20:15,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:20:15,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:20:15,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:20:15,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:20:15,119 INFO L87 Difference]: Start difference. First operand 514081 states and 776541 transitions. Second operand 4 states. [2020-07-20 02:22:09,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:22:09,525 INFO L93 Difference]: Finished difference Result 1513801 states and 2288443 transitions. [2020-07-20 02:22:09,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:22:09,526 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 340 [2020-07-20 02:22:09,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:22:10,941 INFO L225 Difference]: With dead ends: 1513801 [2020-07-20 02:22:10,941 INFO L226 Difference]: Without dead ends: 1018563 [2020-07-20 02:22:11,267 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:22:11,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018563 states.