/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_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 02:07:06,539 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 02:07:06,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 02:07:06,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 02:07:06,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 02:07:06,563 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 02:07:06,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 02:07:06,576 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 02:07:06,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 02:07:06,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 02:07:06,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 02:07:06,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 02:07:06,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 02:07:06,589 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 02:07:06,591 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 02:07:06,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 02:07:06,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 02:07:06,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 02:07:06,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 02:07:06,601 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 02:07:06,606 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 02:07:06,609 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 02:07:06,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 02:07:06,611 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 02:07:06,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 02:07:06,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 02:07:06,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 02:07:06,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 02:07:06,626 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 02:07:06,664 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 02:07:06,665 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 02:07:06,666 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 02:07:06,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 02:07:06,666 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 02:07:06,667 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 02:07:06,667 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 02:07:06,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 02:07:06,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 02:07:06,668 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 02:07:06,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 02:07:06,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 02:07:06,668 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 02:07:06,668 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 02:07:06,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 02:07:06,669 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 02:07:06,669 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 02:07:06,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 02:07:06,671 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 02:07:06,671 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 02:07:06,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 02:07:06,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 02:07:06,672 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 02:07:06,672 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 02:07:06,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 02:07:06,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 02:07:06,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 02:07:06,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 02:07:06,673 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 02:07:06,673 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 02:07:06,973 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 02:07:06,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 02:07:06,990 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 02:07:06,991 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 02:07:06,992 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 02:07:06,992 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-07-20 02:07:07,057 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60b04871/39347d8c7de54fbfbfda4bac919f5837/FLAG9dfe56c06 [2020-07-20 02:07:07,726 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 02:07:07,730 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-07-20 02:07:07,759 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60b04871/39347d8c7de54fbfbfda4bac919f5837/FLAG9dfe56c06 [2020-07-20 02:07:07,851 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e60b04871/39347d8c7de54fbfbfda4bac919f5837 [2020-07-20 02:07:07,862 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 02:07:07,866 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 02:07:07,869 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 02:07:07,870 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 02:07:07,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 02:07:07,875 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:07:07" (1/1) ... [2020-07-20 02:07:07,878 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e161a06 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:07, skipping insertion in model container [2020-07-20 02:07:07,878 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:07:07" (1/1) ... [2020-07-20 02:07:07,887 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 02:07:08,073 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 02:07:09,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:07:09,556 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 02:07:11,050 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:07:11,092 INFO L208 MainTranslator]: Completed translation [2020-07-20 02:07:11,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11 WrapperNode [2020-07-20 02:07:11,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 02:07:11,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 02:07:11,095 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 02:07:11,095 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 02:07:11,111 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,113 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,174 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,175 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,244 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (1/1) ... [2020-07-20 02:07:11,375 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 02:07:11,377 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 02:07:11,377 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 02:07:11,377 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 02:07:11,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (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 02:07:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 02:07:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 02:07:11,468 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 02:07:11,469 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 02:07:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 02:07:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 02:07:11,469 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 02:07:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 02:07:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 02:07:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 02:07:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 02:07:11,470 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 02:07:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 02:07:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 02:07:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 02:07:11,471 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 02:07:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-20 02:07:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 02:07:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 02:07:11,472 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 02:07:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 02:07:11,473 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 02:07:15,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 02:07:15,569 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 02:07:15,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:07:15 BoogieIcfgContainer [2020-07-20 02:07:15,581 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 02:07:15,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 02:07:15,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 02:07:15,586 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 02:07:15,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:07:07" (1/3) ... [2020-07-20 02:07:15,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab59350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:07:15, skipping insertion in model container [2020-07-20 02:07:15,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:07:11" (2/3) ... [2020-07-20 02:07:15,588 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ab59350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:07:15, skipping insertion in model container [2020-07-20 02:07:15,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:07:15" (3/3) ... [2020-07-20 02:07:15,590 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2020-07-20 02:07:15,602 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 02:07:15,612 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-20 02:07:15,627 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-20 02:07:15,657 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 02:07:15,657 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 02:07:15,657 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 02:07:15,657 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 02:07:15,657 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 02:07:15,658 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 02:07:15,658 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 02:07:15,658 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 02:07:15,697 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states. [2020-07-20 02:07:15,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-07-20 02:07:15,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:07:15,736 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:15,737 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:07:15,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:07:15,743 INFO L82 PathProgramCache]: Analyzing trace with hash -856462850, now seen corresponding path program 1 times [2020-07-20 02:07:15,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:07:15,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943514741] [2020-07-20 02:07:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:07:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:07:19,934 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:07:19,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:07:20,406 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 02:07:20,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943514741] [2020-07-20 02:07:20,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:07:20,408 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:07:20,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015300174] [2020-07-20 02:07:20,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:07:20,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:07:20,430 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:07:20,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:07:20,433 INFO L87 Difference]: Start difference. First operand 1371 states. Second operand 5 states. [2020-07-20 02:07:37,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:07:37,607 INFO L93 Difference]: Finished difference Result 4059 states and 7350 transitions. [2020-07-20 02:07:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:07:37,610 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 464 [2020-07-20 02:07:37,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:07:37,678 INFO L225 Difference]: With dead ends: 4059 [2020-07-20 02:07:37,679 INFO L226 Difference]: Without dead ends: 2697 [2020-07-20 02:07:37,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:07:37,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2697 states. [2020-07-20 02:07:38,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2697 to 2647. [2020-07-20 02:07:38,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2647 states. [2020-07-20 02:07:38,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2647 states to 2647 states and 4347 transitions. [2020-07-20 02:07:38,036 INFO L78 Accepts]: Start accepts. Automaton has 2647 states and 4347 transitions. Word has length 464 [2020-07-20 02:07:38,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:07:38,041 INFO L479 AbstractCegarLoop]: Abstraction has 2647 states and 4347 transitions. [2020-07-20 02:07:38,041 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:07:38,042 INFO L276 IsEmpty]: Start isEmpty. Operand 2647 states and 4347 transitions. [2020-07-20 02:07:38,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 467 [2020-07-20 02:07:38,071 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:07:38,071 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:38,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 02:07:38,072 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:07:38,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:07:38,073 INFO L82 PathProgramCache]: Analyzing trace with hash -1286826198, now seen corresponding path program 1 times [2020-07-20 02:07:38,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:07:38,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934218781] [2020-07-20 02:07:38,074 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:07:38,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:07:39,926 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:07:39,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:07:40,311 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 02:07:40,312 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934218781] [2020-07-20 02:07:40,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:07:40,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:07:40,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671029112] [2020-07-20 02:07:40,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:07:40,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:07:40,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:07:40,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:07:40,316 INFO L87 Difference]: Start difference. First operand 2647 states and 4347 transitions. Second operand 4 states. [2020-07-20 02:07:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:07:58,544 INFO L93 Difference]: Finished difference Result 7670 states and 12560 transitions. [2020-07-20 02:07:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:07:58,545 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 466 [2020-07-20 02:07:58,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:07:58,573 INFO L225 Difference]: With dead ends: 7670 [2020-07-20 02:07:58,574 INFO L226 Difference]: Without dead ends: 5237 [2020-07-20 02:07:58,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:07:58,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2020-07-20 02:07:58,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 5189. [2020-07-20 02:07:58,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5189 states. [2020-07-20 02:07:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5189 states to 5189 states and 8497 transitions. [2020-07-20 02:07:58,760 INFO L78 Accepts]: Start accepts. Automaton has 5189 states and 8497 transitions. Word has length 466 [2020-07-20 02:07:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:07:58,761 INFO L479 AbstractCegarLoop]: Abstraction has 5189 states and 8497 transitions. [2020-07-20 02:07:58,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:07:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 5189 states and 8497 transitions. [2020-07-20 02:07:58,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 468 [2020-07-20 02:07:58,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:07:58,780 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:07:58,780 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 02:07:58,781 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:07:58,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:07:58,781 INFO L82 PathProgramCache]: Analyzing trace with hash -244647039, now seen corresponding path program 1 times [2020-07-20 02:07:58,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:07:58,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282028069] [2020-07-20 02:07:58,782 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:07:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:07:59,863 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:07:59,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:08:00,018 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 02:08:00,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282028069] [2020-07-20 02:08:00,019 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:08:00,019 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:08:00,019 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848417888] [2020-07-20 02:08:00,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:08:00,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:08:00,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:08:00,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:08:00,022 INFO L87 Difference]: Start difference. First operand 5189 states and 8497 transitions. Second operand 4 states. [2020-07-20 02:08:17,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:08:17,922 INFO L93 Difference]: Finished difference Result 15470 states and 25323 transitions. [2020-07-20 02:08:17,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:08:17,926 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 467 [2020-07-20 02:08:17,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:08:17,977 INFO L225 Difference]: With dead ends: 15470 [2020-07-20 02:08:17,977 INFO L226 Difference]: Without dead ends: 10333 [2020-07-20 02:08:17,987 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:08:18,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10333 states. [2020-07-20 02:08:18,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10333 to 5236. [2020-07-20 02:08:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5236 states. [2020-07-20 02:08:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5236 states to 5236 states and 8571 transitions. [2020-07-20 02:08:18,265 INFO L78 Accepts]: Start accepts. Automaton has 5236 states and 8571 transitions. Word has length 467 [2020-07-20 02:08:18,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:08:18,266 INFO L479 AbstractCegarLoop]: Abstraction has 5236 states and 8571 transitions. [2020-07-20 02:08:18,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:08:18,266 INFO L276 IsEmpty]: Start isEmpty. Operand 5236 states and 8571 transitions. [2020-07-20 02:08:18,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-07-20 02:08:18,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:08:18,296 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:18,297 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 02:08:18,297 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:08:18,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:08:18,298 INFO L82 PathProgramCache]: Analyzing trace with hash 536524677, now seen corresponding path program 1 times [2020-07-20 02:08:18,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:08:18,299 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181361952] [2020-07-20 02:08:18,300 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:08:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:08:19,457 WARN L193 SmtUtils]: Spent 719.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:08:19,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:08:19,769 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 02:08:19,769 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181361952] [2020-07-20 02:08:19,769 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:08:19,769 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:08:19,770 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637134778] [2020-07-20 02:08:19,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:08:19,771 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:08:19,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:08:19,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:08:19,772 INFO L87 Difference]: Start difference. First operand 5236 states and 8571 transitions. Second operand 4 states. [2020-07-20 02:08:37,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:08:37,974 INFO L93 Difference]: Finished difference Result 15048 states and 24542 transitions. [2020-07-20 02:08:37,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:08:37,975 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2020-07-20 02:08:37,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:08:38,021 INFO L225 Difference]: With dead ends: 15048 [2020-07-20 02:08:38,022 INFO L226 Difference]: Without dead ends: 10211 [2020-07-20 02:08:38,033 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 02:08:38,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10211 states. [2020-07-20 02:08:38,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10211 to 10165. [2020-07-20 02:08:38,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10165 states. [2020-07-20 02:08:38,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10165 states to 10165 states and 16557 transitions. [2020-07-20 02:08:38,405 INFO L78 Accepts]: Start accepts. Automaton has 10165 states and 16557 transitions. Word has length 468 [2020-07-20 02:08:38,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:08:38,406 INFO L479 AbstractCegarLoop]: Abstraction has 10165 states and 16557 transitions. [2020-07-20 02:08:38,406 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:08:38,407 INFO L276 IsEmpty]: Start isEmpty. Operand 10165 states and 16557 transitions. [2020-07-20 02:08:38,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 469 [2020-07-20 02:08:38,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:08:38,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:38,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 02:08:38,440 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:08:38,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:08:38,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1157993354, now seen corresponding path program 1 times [2020-07-20 02:08:38,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:08:38,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593200261] [2020-07-20 02:08:38,442 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:08:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:08:39,399 WARN L193 SmtUtils]: Spent 721.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:08:39,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:08:39,551 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 02:08:39,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593200261] [2020-07-20 02:08:39,551 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:08:39,551 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:08:39,552 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268584293] [2020-07-20 02:08:39,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:08:39,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:08:39,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:08:39,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:08:39,553 INFO L87 Difference]: Start difference. First operand 10165 states and 16557 transitions. Second operand 4 states. [2020-07-20 02:08:58,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:08:58,599 INFO L93 Difference]: Finished difference Result 30239 states and 49226 transitions. [2020-07-20 02:08:58,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:08:58,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 468 [2020-07-20 02:08:58,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:08:58,641 INFO L225 Difference]: With dead ends: 30239 [2020-07-20 02:08:58,642 INFO L226 Difference]: Without dead ends: 20218 [2020-07-20 02:08:58,663 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 02:08:58,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20218 states. [2020-07-20 02:08:59,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20218 to 10263. [2020-07-20 02:08:59,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10263 states. [2020-07-20 02:08:59,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10263 states to 10263 states and 16708 transitions. [2020-07-20 02:08:59,271 INFO L78 Accepts]: Start accepts. Automaton has 10263 states and 16708 transitions. Word has length 468 [2020-07-20 02:08:59,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:08:59,272 INFO L479 AbstractCegarLoop]: Abstraction has 10263 states and 16708 transitions. [2020-07-20 02:08:59,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:08:59,272 INFO L276 IsEmpty]: Start isEmpty. Operand 10263 states and 16708 transitions. [2020-07-20 02:08:59,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-07-20 02:08:59,295 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:08:59,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:08:59,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 02:08:59,296 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:08:59,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:08:59,296 INFO L82 PathProgramCache]: Analyzing trace with hash 284183058, now seen corresponding path program 1 times [2020-07-20 02:08:59,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:08:59,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594499806] [2020-07-20 02:08:59,297 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:08:59,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:09:00,218 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:09:00,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:09:00,436 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 02:09:00,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594499806] [2020-07-20 02:09:00,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:09:00,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:09:00,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147589435] [2020-07-20 02:09:00,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:09:00,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:09:00,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:09:00,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:09:00,449 INFO L87 Difference]: Start difference. First operand 10263 states and 16708 transitions. Second operand 4 states. [2020-07-20 02:09:20,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:09:20,020 INFO L93 Difference]: Finished difference Result 30374 states and 49407 transitions. [2020-07-20 02:09:20,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:09:20,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 469 [2020-07-20 02:09:20,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:09:20,065 INFO L225 Difference]: With dead ends: 30374 [2020-07-20 02:09:20,066 INFO L226 Difference]: Without dead ends: 20335 [2020-07-20 02:09:20,087 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 02:09:20,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20335 states. [2020-07-20 02:09:20,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20335 to 10380. [2020-07-20 02:09:20,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10380 states. [2020-07-20 02:09:20,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10380 states to 10380 states and 16854 transitions. [2020-07-20 02:09:20,522 INFO L78 Accepts]: Start accepts. Automaton has 10380 states and 16854 transitions. Word has length 469 [2020-07-20 02:09:20,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:09:20,522 INFO L479 AbstractCegarLoop]: Abstraction has 10380 states and 16854 transitions. [2020-07-20 02:09:20,522 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:09:20,523 INFO L276 IsEmpty]: Start isEmpty. Operand 10380 states and 16854 transitions. [2020-07-20 02:09:20,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-07-20 02:09:20,541 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:09:20,541 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:20,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 02:09:20,542 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:09:20,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:09:20,542 INFO L82 PathProgramCache]: Analyzing trace with hash 2073063424, now seen corresponding path program 1 times [2020-07-20 02:09:20,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:09:20,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427643865] [2020-07-20 02:09:20,543 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:09:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:09:21,899 WARN L193 SmtUtils]: Spent 740.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:09:21,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:09:22,214 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 02:09:22,214 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427643865] [2020-07-20 02:09:22,214 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:09:22,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:09:22,215 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753060455] [2020-07-20 02:09:22,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:09:22,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:09:22,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:09:22,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:09:22,217 INFO L87 Difference]: Start difference. First operand 10380 states and 16854 transitions. Second operand 4 states. [2020-07-20 02:09:42,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:09:42,451 INFO L93 Difference]: Finished difference Result 29456 states and 47707 transitions. [2020-07-20 02:09:42,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:09:42,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 470 [2020-07-20 02:09:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:09:42,481 INFO L225 Difference]: With dead ends: 29456 [2020-07-20 02:09:42,481 INFO L226 Difference]: Without dead ends: 20045 [2020-07-20 02:09:42,499 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 02:09:42,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20045 states. [2020-07-20 02:09:43,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20045 to 20001. [2020-07-20 02:09:43,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20001 states. [2020-07-20 02:09:43,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20001 states to 20001 states and 32327 transitions. [2020-07-20 02:09:43,194 INFO L78 Accepts]: Start accepts. Automaton has 20001 states and 32327 transitions. Word has length 470 [2020-07-20 02:09:43,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:09:43,195 INFO L479 AbstractCegarLoop]: Abstraction has 20001 states and 32327 transitions. [2020-07-20 02:09:43,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:09:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 20001 states and 32327 transitions. [2020-07-20 02:09:43,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 471 [2020-07-20 02:09:43,217 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:09:43,218 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:09:43,218 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 02:09:43,218 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:09:43,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:09:43,219 INFO L82 PathProgramCache]: Analyzing trace with hash 1777003357, now seen corresponding path program 1 times [2020-07-20 02:09:43,219 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:09:43,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149562812] [2020-07-20 02:09:43,219 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:09:44,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:09:45,443 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:09:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:09:45,650 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 02:09:45,651 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149562812] [2020-07-20 02:09:45,651 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:09:45,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:09:45,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830053846] [2020-07-20 02:09:45,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:09:45,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:09:45,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:09:45,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:09:45,654 INFO L87 Difference]: Start difference. First operand 20001 states and 32327 transitions. Second operand 5 states. [2020-07-20 02:10:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:01,227 INFO L93 Difference]: Finished difference Result 47599 states and 77546 transitions. [2020-07-20 02:10:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:10:01,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 470 [2020-07-20 02:10:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:01,257 INFO L225 Difference]: With dead ends: 47599 [2020-07-20 02:10:01,258 INFO L226 Difference]: Without dead ends: 24408 [2020-07-20 02:10:01,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:10:01,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24408 states. [2020-07-20 02:10:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24408 to 24355. [2020-07-20 02:10:02,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24355 states. [2020-07-20 02:10:02,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24355 states to 24355 states and 39550 transitions. [2020-07-20 02:10:02,238 INFO L78 Accepts]: Start accepts. Automaton has 24355 states and 39550 transitions. Word has length 470 [2020-07-20 02:10:02,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:02,238 INFO L479 AbstractCegarLoop]: Abstraction has 24355 states and 39550 transitions. [2020-07-20 02:10:02,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:10:02,238 INFO L276 IsEmpty]: Start isEmpty. Operand 24355 states and 39550 transitions. [2020-07-20 02:10:02,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 473 [2020-07-20 02:10:02,263 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:02,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:02,264 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 02:10:02,264 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:02,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1583646567, now seen corresponding path program 1 times [2020-07-20 02:10:02,265 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:02,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458152985] [2020-07-20 02:10:02,265 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:10:02,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:03,886 WARN L193 SmtUtils]: Spent 891.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:10:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:04,209 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 02:10:04,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458152985] [2020-07-20 02:10:04,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:04,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:04,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627647484] [2020-07-20 02:10:04,211 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:04,211 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:04,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:04,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:04,212 INFO L87 Difference]: Start difference. First operand 24355 states and 39550 transitions. Second operand 4 states. [2020-07-20 02:10:24,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:24,623 INFO L93 Difference]: Finished difference Result 71217 states and 115711 transitions. [2020-07-20 02:10:24,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:10:24,627 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 472 [2020-07-20 02:10:24,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:24,671 INFO L225 Difference]: With dead ends: 71217 [2020-07-20 02:10:24,671 INFO L226 Difference]: Without dead ends: 47882 [2020-07-20 02:10:24,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:24,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47882 states. [2020-07-20 02:10:26,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47882 to 47846. [2020-07-20 02:10:26,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47846 states. [2020-07-20 02:10:26,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47846 states to 47846 states and 77425 transitions. [2020-07-20 02:10:26,305 INFO L78 Accepts]: Start accepts. Automaton has 47846 states and 77425 transitions. Word has length 472 [2020-07-20 02:10:26,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:26,305 INFO L479 AbstractCegarLoop]: Abstraction has 47846 states and 77425 transitions. [2020-07-20 02:10:26,306 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:26,306 INFO L276 IsEmpty]: Start isEmpty. Operand 47846 states and 77425 transitions. [2020-07-20 02:10:26,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 474 [2020-07-20 02:10:26,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:26,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:26,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 02:10:26,349 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:26,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:26,349 INFO L82 PathProgramCache]: Analyzing trace with hash 832056112, now seen corresponding path program 1 times [2020-07-20 02:10:26,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:26,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383526996] [2020-07-20 02:10:26,350 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:10:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:27,559 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:10:27,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:27,755 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 02:10:27,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383526996] [2020-07-20 02:10:27,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:27,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:27,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734737294] [2020-07-20 02:10:27,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:27,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:27,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:27,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:27,757 INFO L87 Difference]: Start difference. First operand 47846 states and 77425 transitions. Second operand 4 states. [2020-07-20 02:10:41,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:10:41,963 INFO L93 Difference]: Finished difference Result 138790 states and 224305 transitions. [2020-07-20 02:10:41,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:10:41,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 473 [2020-07-20 02:10:41,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:10:42,049 INFO L225 Difference]: With dead ends: 138790 [2020-07-20 02:10:42,050 INFO L226 Difference]: Without dead ends: 93337 [2020-07-20 02:10:42,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:42,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93337 states. [2020-07-20 02:10:44,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93337 to 48236. [2020-07-20 02:10:44,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48236 states. [2020-07-20 02:10:44,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48236 states to 48236 states and 78001 transitions. [2020-07-20 02:10:44,407 INFO L78 Accepts]: Start accepts. Automaton has 48236 states and 78001 transitions. Word has length 473 [2020-07-20 02:10:44,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:10:44,408 INFO L479 AbstractCegarLoop]: Abstraction has 48236 states and 78001 transitions. [2020-07-20 02:10:44,408 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:10:44,408 INFO L276 IsEmpty]: Start isEmpty. Operand 48236 states and 78001 transitions. [2020-07-20 02:10:44,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-07-20 02:10:44,460 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:10:44,460 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:10:44,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 02:10:44,461 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:10:44,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:10:44,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1772484418, now seen corresponding path program 1 times [2020-07-20 02:10:44,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:10:44,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675441268] [2020-07-20 02:10:44,462 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:10:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:45,848 WARN L193 SmtUtils]: Spent 976.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:10:45,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:10:46,123 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 02:10:46,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675441268] [2020-07-20 02:10:46,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:10:46,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:10:46,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094146710] [2020-07-20 02:10:46,124 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:10:46,124 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:10:46,124 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:10:46,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:10:46,125 INFO L87 Difference]: Start difference. First operand 48236 states and 78001 transitions. Second operand 4 states. [2020-07-20 02:11:10,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:10,242 INFO L93 Difference]: Finished difference Result 140167 states and 226533 transitions. [2020-07-20 02:11:10,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-20 02:11:10,243 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 474 [2020-07-20 02:11:10,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:10,333 INFO L225 Difference]: With dead ends: 140167 [2020-07-20 02:11:10,333 INFO L226 Difference]: Without dead ends: 94781 [2020-07-20 02:11:10,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:11:10,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94781 states. [2020-07-20 02:11:16,259 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94781 to 94747. [2020-07-20 02:11:16,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94747 states. [2020-07-20 02:11:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94747 states to 94747 states and 152646 transitions. [2020-07-20 02:11:16,382 INFO L78 Accepts]: Start accepts. Automaton has 94747 states and 152646 transitions. Word has length 474 [2020-07-20 02:11:16,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:16,382 INFO L479 AbstractCegarLoop]: Abstraction has 94747 states and 152646 transitions. [2020-07-20 02:11:16,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:11:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 94747 states and 152646 transitions. [2020-07-20 02:11:16,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-07-20 02:11:16,455 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:16,455 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:16,456 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 02:11:16,456 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:16,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:16,456 INFO L82 PathProgramCache]: Analyzing trace with hash -869161505, now seen corresponding path program 1 times [2020-07-20 02:11:16,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:16,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700944556] [2020-07-20 02:11:16,456 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:11:17,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:18,132 WARN L193 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:11:18,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:18,281 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 02:11:18,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700944556] [2020-07-20 02:11:18,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:18,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:11:18,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424682358] [2020-07-20 02:11:18,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:11:18,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:18,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:11:18,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:11:18,283 INFO L87 Difference]: Start difference. First operand 94747 states and 152646 transitions. Second operand 5 states. [2020-07-20 02:11:42,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:11:42,082 INFO L93 Difference]: Finished difference Result 233316 states and 378328 transitions. [2020-07-20 02:11:42,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:11:42,083 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 474 [2020-07-20 02:11:42,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:11:42,215 INFO L225 Difference]: With dead ends: 233316 [2020-07-20 02:11:42,216 INFO L226 Difference]: Without dead ends: 120293 [2020-07-20 02:11:42,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:11:42,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120293 states. [2020-07-20 02:11:49,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120293 to 120214. [2020-07-20 02:11:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120214 states. [2020-07-20 02:11:49,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120214 states to 120214 states and 194430 transitions. [2020-07-20 02:11:49,544 INFO L78 Accepts]: Start accepts. Automaton has 120214 states and 194430 transitions. Word has length 474 [2020-07-20 02:11:49,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:11:49,544 INFO L479 AbstractCegarLoop]: Abstraction has 120214 states and 194430 transitions. [2020-07-20 02:11:49,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:11:49,544 INFO L276 IsEmpty]: Start isEmpty. Operand 120214 states and 194430 transitions. [2020-07-20 02:11:49,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:11:49,643 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:11:49,644 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:11:49,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 02:11:49,644 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:11:49,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:11:49,644 INFO L82 PathProgramCache]: Analyzing trace with hash -2045453381, now seen corresponding path program 1 times [2020-07-20 02:11:49,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:11:49,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216487401] [2020-07-20 02:11:49,645 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:11:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:50,850 WARN L193 SmtUtils]: Spent 757.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:11:50,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:11:51,194 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 02:11:51,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216487401] [2020-07-20 02:11:51,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:11:51,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:11:51,197 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209060455] [2020-07-20 02:11:51,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 02:11:51,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:11:51,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 02:11:51,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:11:51,199 INFO L87 Difference]: Start difference. First operand 120214 states and 194430 transitions. Second operand 6 states. [2020-07-20 02:11:52,050 WARN L193 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 399 [2020-07-20 02:12:12,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:12,747 INFO L93 Difference]: Finished difference Result 206583 states and 326042 transitions. [2020-07-20 02:12:12,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 02:12:12,749 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 476 [2020-07-20 02:12:12,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:12,918 INFO L225 Difference]: With dead ends: 206583 [2020-07-20 02:12:12,918 INFO L226 Difference]: Without dead ends: 157048 [2020-07-20 02:12:12,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-20 02:12:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157048 states. [2020-07-20 02:12:21,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157048 to 157046. [2020-07-20 02:12:21,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157046 states. [2020-07-20 02:12:21,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157046 states to 157046 states and 249638 transitions. [2020-07-20 02:12:21,310 INFO L78 Accepts]: Start accepts. Automaton has 157046 states and 249638 transitions. Word has length 476 [2020-07-20 02:12:21,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:12:21,310 INFO L479 AbstractCegarLoop]: Abstraction has 157046 states and 249638 transitions. [2020-07-20 02:12:21,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 02:12:21,311 INFO L276 IsEmpty]: Start isEmpty. Operand 157046 states and 249638 transitions. [2020-07-20 02:12:21,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:12:21,434 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:12:21,434 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:12:21,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 02:12:21,435 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:12:21,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:12:21,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1539997558, now seen corresponding path program 1 times [2020-07-20 02:12:21,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:12:21,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741155231] [2020-07-20 02:12:21,436 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:12:21,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:23,230 WARN L193 SmtUtils]: Spent 758.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:12:23,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:12:23,542 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 02:12:23,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741155231] [2020-07-20 02:12:23,542 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:12:23,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-20 02:12:23,543 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475919694] [2020-07-20 02:12:23,544 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 02:12:23,544 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:12:23,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 02:12:23,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-07-20 02:12:23,544 INFO L87 Difference]: Start difference. First operand 157046 states and 249638 transitions. Second operand 14 states. [2020-07-20 02:12:26,711 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 427 [2020-07-20 02:12:55,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:12:55,840 INFO L93 Difference]: Finished difference Result 234320 states and 370860 transitions. [2020-07-20 02:12:55,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-20 02:12:55,842 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 476 [2020-07-20 02:12:55,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:12:56,082 INFO L225 Difference]: With dead ends: 234320 [2020-07-20 02:12:56,082 INFO L226 Difference]: Without dead ends: 220089 [2020-07-20 02:12:56,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=273, Invalid=917, Unknown=0, NotChecked=0, Total=1190 [2020-07-20 02:12:56,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220089 states. [2020-07-20 02:13:09,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220089 to 167302. [2020-07-20 02:13:09,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167302 states. [2020-07-20 02:13:09,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167302 states to 167302 states and 264406 transitions. [2020-07-20 02:13:09,902 INFO L78 Accepts]: Start accepts. Automaton has 167302 states and 264406 transitions. Word has length 476 [2020-07-20 02:13:09,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:13:09,903 INFO L479 AbstractCegarLoop]: Abstraction has 167302 states and 264406 transitions. [2020-07-20 02:13:09,903 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 02:13:09,903 INFO L276 IsEmpty]: Start isEmpty. Operand 167302 states and 264406 transitions. [2020-07-20 02:13:10,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:13:10,030 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:13:10,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:13:10,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-20 02:13:10,031 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:13:10,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:13:10,031 INFO L82 PathProgramCache]: Analyzing trace with hash -450585505, now seen corresponding path program 1 times [2020-07-20 02:13:10,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:13:10,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405867037] [2020-07-20 02:13:10,032 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:13:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:12,593 WARN L193 SmtUtils]: Spent 775.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:13:12,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:13:12,905 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 02:13:12,905 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405867037] [2020-07-20 02:13:12,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:13:12,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-20 02:13:12,906 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27405956] [2020-07-20 02:13:12,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 02:13:12,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:13:12,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 02:13:12,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-20 02:13:12,907 INFO L87 Difference]: Start difference. First operand 167302 states and 264406 transitions. Second operand 17 states. [2020-07-20 02:13:14,999 WARN L193 SmtUtils]: Spent 1.91 s on a formula simplification. DAG size of input: 412 DAG size of output: 410 [2020-07-20 02:13:30,676 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 30 [2020-07-20 02:13:31,052 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 32 [2020-07-20 02:13:39,489 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 33 [2020-07-20 02:14:20,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:14:20,027 INFO L93 Difference]: Finished difference Result 418269 states and 651544 transitions. [2020-07-20 02:14:20,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-20 02:14:20,028 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 476 [2020-07-20 02:14:20,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:14:20,506 INFO L225 Difference]: With dead ends: 418269 [2020-07-20 02:14:20,506 INFO L226 Difference]: Without dead ends: 387910 [2020-07-20 02:14:20,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 709 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=843, Invalid=2349, Unknown=0, NotChecked=0, Total=3192 [2020-07-20 02:14:20,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 387910 states. [2020-07-20 02:14:39,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 387910 to 179654. [2020-07-20 02:14:39,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179654 states. [2020-07-20 02:14:39,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179654 states to 179654 states and 282246 transitions. [2020-07-20 02:14:39,378 INFO L78 Accepts]: Start accepts. Automaton has 179654 states and 282246 transitions. Word has length 476 [2020-07-20 02:14:39,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:14:39,379 INFO L479 AbstractCegarLoop]: Abstraction has 179654 states and 282246 transitions. [2020-07-20 02:14:39,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 02:14:39,379 INFO L276 IsEmpty]: Start isEmpty. Operand 179654 states and 282246 transitions. [2020-07-20 02:14:39,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:14:39,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:14:39,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:14:39,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-20 02:14:39,549 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:14:39,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:14:39,550 INFO L82 PathProgramCache]: Analyzing trace with hash -290890227, now seen corresponding path program 1 times [2020-07-20 02:14:39,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:14:39,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622737994] [2020-07-20 02:14:39,550 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:14:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:41,960 WARN L193 SmtUtils]: Spent 845.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:14:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:14:42,317 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 02:14:42,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622737994] [2020-07-20 02:14:42,317 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:14:42,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-20 02:14:42,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610791498] [2020-07-20 02:14:42,319 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-20 02:14:42,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:14:42,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-20 02:14:42,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-20 02:14:42,319 INFO L87 Difference]: Start difference. First operand 179654 states and 282246 transitions. Second operand 17 states. [2020-07-20 02:14:42,468 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 36 [2020-07-20 02:14:44,727 WARN L193 SmtUtils]: Spent 2.17 s on a formula simplification. DAG size of input: 425 DAG size of output: 419 [2020-07-20 02:15:17,253 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 32 [2020-07-20 02:15:45,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:15:45,341 INFO L93 Difference]: Finished difference Result 342787 states and 535144 transitions. [2020-07-20 02:15:45,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-07-20 02:15:45,343 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 476 [2020-07-20 02:15:45,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:15:45,671 INFO L225 Difference]: With dead ends: 342787 [2020-07-20 02:15:45,671 INFO L226 Difference]: Without dead ends: 328556 [2020-07-20 02:15:45,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=471, Invalid=1421, Unknown=0, NotChecked=0, Total=1892 [2020-07-20 02:15:45,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328556 states. [2020-07-20 02:16:01,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328556 to 183718. [2020-07-20 02:16:01,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183718 states. [2020-07-20 02:16:02,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183718 states to 183718 states and 288054 transitions. [2020-07-20 02:16:02,045 INFO L78 Accepts]: Start accepts. Automaton has 183718 states and 288054 transitions. Word has length 476 [2020-07-20 02:16:02,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:16:02,045 INFO L479 AbstractCegarLoop]: Abstraction has 183718 states and 288054 transitions. [2020-07-20 02:16:02,045 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-20 02:16:02,045 INFO L276 IsEmpty]: Start isEmpty. Operand 183718 states and 288054 transitions. [2020-07-20 02:16:02,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:16:02,198 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:16:02,198 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:16:02,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-20 02:16:02,199 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:16:02,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:16:02,199 INFO L82 PathProgramCache]: Analyzing trace with hash 2013494006, now seen corresponding path program 1 times [2020-07-20 02:16:02,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:16:02,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004045536] [2020-07-20 02:16:02,200 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:16:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:03,569 WARN L193 SmtUtils]: Spent 836.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:16:03,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:16:06,857 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 02:16:06,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1004045536] [2020-07-20 02:16:06,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:16:06,858 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:16:06,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472773068] [2020-07-20 02:16:06,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:16:06,859 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:16:06,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:16:06,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:16:06,859 INFO L87 Difference]: Start difference. First operand 183718 states and 288054 transitions. Second operand 5 states. [2020-07-20 02:16:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:16:53,882 INFO L93 Difference]: Finished difference Result 536030 states and 839729 transitions. [2020-07-20 02:16:53,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:16:53,884 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-07-20 02:16:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:16:54,265 INFO L225 Difference]: With dead ends: 536030 [2020-07-20 02:16:54,265 INFO L226 Difference]: Without dead ends: 356514 [2020-07-20 02:16:54,403 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:16:54,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356514 states. [2020-07-20 02:17:30,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356514 to 356463. [2020-07-20 02:17:30,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 356463 states. [2020-07-20 02:17:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356463 states to 356463 states and 556376 transitions. [2020-07-20 02:17:30,766 INFO L78 Accepts]: Start accepts. Automaton has 356463 states and 556376 transitions. Word has length 476 [2020-07-20 02:17:30,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:17:30,766 INFO L479 AbstractCegarLoop]: Abstraction has 356463 states and 556376 transitions. [2020-07-20 02:17:30,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:17:30,767 INFO L276 IsEmpty]: Start isEmpty. Operand 356463 states and 556376 transitions. [2020-07-20 02:17:31,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:17:31,059 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:17:31,060 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:17:31,060 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-20 02:17:31,060 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:17:31,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:17:31,060 INFO L82 PathProgramCache]: Analyzing trace with hash -596441289, now seen corresponding path program 1 times [2020-07-20 02:17:31,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:17:31,061 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572841181] [2020-07-20 02:17:31,061 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:17:31,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:32,457 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 391 [2020-07-20 02:17:32,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:17:32,595 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 02:17:32,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572841181] [2020-07-20 02:17:32,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:17:32,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:17:32,596 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [227304113] [2020-07-20 02:17:32,597 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:17:32,597 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:17:32,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:17:32,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:17:32,598 INFO L87 Difference]: Start difference. First operand 356463 states and 556376 transitions. Second operand 5 states. [2020-07-20 02:18:36,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:18:36,299 INFO L93 Difference]: Finished difference Result 847694 states and 1331134 transitions. [2020-07-20 02:18:36,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:18:36,300 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 476 [2020-07-20 02:18:36,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:18:37,381 INFO L225 Difference]: With dead ends: 847694 [2020-07-20 02:18:37,381 INFO L226 Difference]: Without dead ends: 432139 [2020-07-20 02:18:37,631 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 02:18:37,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432139 states. [2020-07-20 02:19:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432139 to 432060. [2020-07-20 02:19:24,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 432060 states. [2020-07-20 02:19:25,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 432060 states to 432060 states and 677003 transitions. [2020-07-20 02:19:25,611 INFO L78 Accepts]: Start accepts. Automaton has 432060 states and 677003 transitions. Word has length 476 [2020-07-20 02:19:25,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:19:25,611 INFO L479 AbstractCegarLoop]: Abstraction has 432060 states and 677003 transitions. [2020-07-20 02:19:25,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:19:25,611 INFO L276 IsEmpty]: Start isEmpty. Operand 432060 states and 677003 transitions. [2020-07-20 02:19:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 477 [2020-07-20 02:19:25,988 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:19:25,988 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:19:25,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-20 02:19:25,988 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:19:25,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:19:25,989 INFO L82 PathProgramCache]: Analyzing trace with hash -474978496, now seen corresponding path program 1 times [2020-07-20 02:19:25,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:19:25,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057573408] [2020-07-20 02:19:25,989 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@58c79195 [2020-07-20 02:19:26,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat