/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 --traceabstraction.trace.refinement.strategy CAMEL_SMT_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-20 02:19:42,660 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 02:19:42,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 02:19:42,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 02:19:42,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 02:19:42,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 02:19:42,678 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 02:19:42,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 02:19:42,682 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 02:19:42,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 02:19:42,683 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 02:19:42,685 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 02:19:42,685 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 02:19:42,686 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 02:19:42,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 02:19:42,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 02:19:42,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 02:19:42,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 02:19:42,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 02:19:42,693 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 02:19:42,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 02:19:42,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 02:19:42,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 02:19:42,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 02:19:42,701 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 02:19:42,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 02:19:42,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 02:19:42,710 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 02:19:42,711 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 02:19:42,726 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 02:19:42,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 02:19:42,727 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 02:19:42,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 02:19:42,728 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 02:19:42,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 02:19:42,728 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 02:19:42,728 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 02:19:42,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 02:19:42,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 02:19:42,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 02:19:42,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 02:19:42,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 02:19:42,730 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 02:19:42,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 02:19:42,730 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 02:19:42,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 02:19:42,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 02:19:42,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 02:19:42,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 02:19:42,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 02:19:42,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 02:19:42,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 02:19:42,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 02:19:42,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 02:19:42,732 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 02:19:42,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 02:19:42,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 02:19:42,733 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 02:19:42,733 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 02:19:43,051 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 02:19:43,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 02:19:43,071 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 02:19:43,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 02:19:43,073 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 02:19:43,074 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-20 02:19:43,135 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ff6c1d9/8943ec8ab32e4404814fb1b66b03a923/FLAGbd581669d [2020-07-20 02:19:43,894 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 02:19:43,895 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-20 02:19:43,926 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ff6c1d9/8943ec8ab32e4404814fb1b66b03a923/FLAGbd581669d [2020-07-20 02:19:44,010 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64ff6c1d9/8943ec8ab32e4404814fb1b66b03a923 [2020-07-20 02:19:44,022 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 02:19:44,025 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 02:19:44,026 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 02:19:44,026 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 02:19:44,030 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 02:19:44,031 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:19:44" (1/1) ... [2020-07-20 02:19:44,033 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5e300c5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:44, skipping insertion in model container [2020-07-20 02:19:44,034 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:19:44" (1/1) ... [2020-07-20 02:19:44,041 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 02:19:44,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 02:19:46,643 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:19:46,656 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 02:19:48,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 02:19:48,484 INFO L208 MainTranslator]: Completed translation [2020-07-20 02:19:48,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48 WrapperNode [2020-07-20 02:19:48,485 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 02:19:48,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 02:19:48,487 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 02:19:48,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 02:19:48,507 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,557 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,730 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (1/1) ... [2020-07-20 02:19:48,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 02:19:48,813 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 02:19:48,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 02:19:48,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 02:19:48,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (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 02:19:48,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 02:19:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 02:19:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 02:19:48,955 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 02:19:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 02:19:48,955 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-20 02:19:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-20 02:19:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-20 02:19:48,956 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 02:19:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 02:19:48,957 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-20 02:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-20 02:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-20 02:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-20 02:19:48,958 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-20 02:19:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-20 02:19:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-20 02:19:48,959 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-20 02:19:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-20 02:19:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 02:19:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 02:19:48,960 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 02:19:55,164 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 02:19:55,165 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-20 02:19:55,182 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:19:55 BoogieIcfgContainer [2020-07-20 02:19:55,183 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 02:19:55,185 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 02:19:55,185 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 02:19:55,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 02:19:55,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:19:44" (1/3) ... [2020-07-20 02:19:55,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466fdca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:19:55, skipping insertion in model container [2020-07-20 02:19:55,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:19:48" (2/3) ... [2020-07-20 02:19:55,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@466fdca1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:19:55, skipping insertion in model container [2020-07-20 02:19:55,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:19:55" (3/3) ... [2020-07-20 02:19:55,197 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-20 02:19:55,210 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-20 02:19:55,224 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-20 02:19:55,238 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-20 02:19:55,274 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 02:19:55,274 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 02:19:55,274 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-20 02:19:55,274 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 02:19:55,274 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 02:19:55,275 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 02:19:55,275 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 02:19:55,275 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 02:19:55,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2020-07-20 02:19:55,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-20 02:19:55,375 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:19:55,378 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] [2020-07-20 02:19:55,379 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:19:55,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:19:55,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1936618047, now seen corresponding path program 1 times [2020-07-20 02:19:55,398 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:19:55,399 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170407242] [2020-07-20 02:19:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:19:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:19:57,367 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:19:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:19:57,521 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 02:19:57,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [170407242] [2020-07-20 02:19:57,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:19:57,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:19:57,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233828346] [2020-07-20 02:19:57,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:19:57,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:19:57,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:19:57,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:19:57,545 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 5 states. [2020-07-20 02:20:15,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:20:15,285 INFO L93 Difference]: Finished difference Result 4483 states and 7776 transitions. [2020-07-20 02:20:15,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:20:15,287 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-07-20 02:20:15,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:20:15,342 INFO L225 Difference]: With dead ends: 4483 [2020-07-20 02:20:15,342 INFO L226 Difference]: Without dead ends: 2511 [2020-07-20 02:20:15,363 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 02:20:15,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-20 02:20:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2020-07-20 02:20:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-07-20 02:20:15,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4317 transitions. [2020-07-20 02:20:15,588 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4317 transitions. Word has length 322 [2020-07-20 02:20:15,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:20:15,591 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 4317 transitions. [2020-07-20 02:20:15,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:20:15,592 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4317 transitions. [2020-07-20 02:20:15,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-07-20 02:20:15,606 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:20:15,606 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] [2020-07-20 02:20:15,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-20 02:20:15,607 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:20:15,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:20:15,608 INFO L82 PathProgramCache]: Analyzing trace with hash -1448784548, now seen corresponding path program 1 times [2020-07-20 02:20:15,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:20:15,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705165745] [2020-07-20 02:20:15,608 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:20:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:17,343 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:20:17,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:17,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:20:17,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705165745] [2020-07-20 02:20:17,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:20:17,630 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:20:17,630 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416757734] [2020-07-20 02:20:17,635 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:20:17,635 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:20:17,635 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:20:17,635 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:20:17,636 INFO L87 Difference]: Start difference. First operand 2511 states and 4317 transitions. Second operand 4 states. [2020-07-20 02:20:18,448 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 02:20:44,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:20:44,146 INFO L93 Difference]: Finished difference Result 6234 states and 10658 transitions. [2020-07-20 02:20:44,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:20:44,147 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2020-07-20 02:20:44,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:20:44,178 INFO L225 Difference]: With dead ends: 6234 [2020-07-20 02:20:44,178 INFO L226 Difference]: Without dead ends: 4315 [2020-07-20 02:20:44,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:20:44,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-07-20 02:20:44,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4311. [2020-07-20 02:20:44,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-07-20 02:20:44,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7334 transitions. [2020-07-20 02:20:44,314 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7334 transitions. Word has length 386 [2020-07-20 02:20:44,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:20:44,315 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 7334 transitions. [2020-07-20 02:20:44,315 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:20:44,316 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7334 transitions. [2020-07-20 02:20:44,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-20 02:20:44,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:20:44,333 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] [2020-07-20 02:20:44,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-20 02:20:44,334 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:20:44,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:20:44,335 INFO L82 PathProgramCache]: Analyzing trace with hash 533740400, now seen corresponding path program 1 times [2020-07-20 02:20:44,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:20:44,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624168142] [2020-07-20 02:20:44,336 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:20:44,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:45,633 WARN L193 SmtUtils]: Spent 739.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:20:45,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:20:45,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 02:20:45,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624168142] [2020-07-20 02:20:45,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:20:45,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:20:45,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [601036663] [2020-07-20 02:20:45,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:20:45,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:20:45,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:20:45,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:20:45,785 INFO L87 Difference]: Start difference. First operand 4311 states and 7334 transitions. Second operand 4 states. [2020-07-20 02:20:46,630 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 02:21:12,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:21:12,162 INFO L93 Difference]: Finished difference Result 7280 states and 12405 transitions. [2020-07-20 02:21:12,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:21:12,164 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2020-07-20 02:21:12,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:21:12,191 INFO L225 Difference]: With dead ends: 7280 [2020-07-20 02:21:12,191 INFO L226 Difference]: Without dead ends: 5350 [2020-07-20 02:21:12,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:21:12,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-07-20 02:21:12,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5346. [2020-07-20 02:21:12,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2020-07-20 02:21:12,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 9097 transitions. [2020-07-20 02:21:12,355 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 9097 transitions. Word has length 391 [2020-07-20 02:21:12,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:21:12,356 INFO L479 AbstractCegarLoop]: Abstraction has 5346 states and 9097 transitions. [2020-07-20 02:21:12,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:21:12,356 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 9097 transitions. [2020-07-20 02:21:12,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-07-20 02:21:12,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:21:12,375 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] [2020-07-20 02:21:12,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-20 02:21:12,375 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:21:12,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:21:12,376 INFO L82 PathProgramCache]: Analyzing trace with hash 1980960461, now seen corresponding path program 1 times [2020-07-20 02:21:12,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:21:12,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140250012] [2020-07-20 02:21:12,377 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:21:12,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:13,627 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:21:13,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:13,804 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 02:21:13,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140250012] [2020-07-20 02:21:13,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:21:13,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:21:13,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201574593] [2020-07-20 02:21:13,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:21:13,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:21:13,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:21:13,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:21:13,808 INFO L87 Difference]: Start difference. First operand 5346 states and 9097 transitions. Second operand 4 states. [2020-07-20 02:21:14,661 WARN L193 SmtUtils]: Spent 797.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 02:21:41,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:21:41,230 INFO L93 Difference]: Finished difference Result 14521 states and 24616 transitions. [2020-07-20 02:21:41,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:21:41,232 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-07-20 02:21:41,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:21:41,274 INFO L225 Difference]: With dead ends: 14521 [2020-07-20 02:21:41,274 INFO L226 Difference]: Without dead ends: 9795 [2020-07-20 02:21:41,285 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:21:41,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2020-07-20 02:21:41,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 9791. [2020-07-20 02:21:41,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2020-07-20 02:21:41,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 16577 transitions. [2020-07-20 02:21:41,575 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 16577 transitions. Word has length 395 [2020-07-20 02:21:41,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:21:41,576 INFO L479 AbstractCegarLoop]: Abstraction has 9791 states and 16577 transitions. [2020-07-20 02:21:41,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:21:41,576 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 16577 transitions. [2020-07-20 02:21:41,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-07-20 02:21:41,598 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:21:41,599 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] [2020-07-20 02:21:41,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-20 02:21:41,600 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:21:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:21:41,601 INFO L82 PathProgramCache]: Analyzing trace with hash 155302923, now seen corresponding path program 1 times [2020-07-20 02:21:41,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:21:41,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580648181] [2020-07-20 02:21:41,602 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:21:41,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:42,718 WARN L193 SmtUtils]: Spent 790.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:21:42,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:21:42,898 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 02:21:42,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580648181] [2020-07-20 02:21:42,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:21:42,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:21:42,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997574415] [2020-07-20 02:21:42,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:21:42,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:21:42,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:21:42,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:21:42,903 INFO L87 Difference]: Start difference. First operand 9791 states and 16577 transitions. Second operand 4 states. [2020-07-20 02:21:43,780 WARN L193 SmtUtils]: Spent 828.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 02:22:10,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:22:10,158 INFO L93 Difference]: Finished difference Result 17611 states and 29837 transitions. [2020-07-20 02:22:10,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:22:10,159 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2020-07-20 02:22:10,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:22:10,201 INFO L225 Difference]: With dead ends: 17611 [2020-07-20 02:22:10,201 INFO L226 Difference]: Without dead ends: 12874 [2020-07-20 02:22:10,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:22:10,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2020-07-20 02:22:10,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12870. [2020-07-20 02:22:10,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12870 states. [2020-07-20 02:22:10,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12870 states to 12870 states and 21779 transitions. [2020-07-20 02:22:10,571 INFO L78 Accepts]: Start accepts. Automaton has 12870 states and 21779 transitions. Word has length 400 [2020-07-20 02:22:10,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:22:10,572 INFO L479 AbstractCegarLoop]: Abstraction has 12870 states and 21779 transitions. [2020-07-20 02:22:10,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:22:10,572 INFO L276 IsEmpty]: Start isEmpty. Operand 12870 states and 21779 transitions. [2020-07-20 02:22:10,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-07-20 02:22:10,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:22:10,601 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] [2020-07-20 02:22:10,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-20 02:22:10,601 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:22:10,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:22:10,602 INFO L82 PathProgramCache]: Analyzing trace with hash -571279020, now seen corresponding path program 1 times [2020-07-20 02:22:10,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:22:10,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644100298] [2020-07-20 02:22:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:22:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:22:11,801 WARN L193 SmtUtils]: Spent 873.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:22:11,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:22:11,919 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 02:22:11,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644100298] [2020-07-20 02:22:11,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:22:11,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:22:11,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653288883] [2020-07-20 02:22:11,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:22:11,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:22:11,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:22:11,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:22:11,922 INFO L87 Difference]: Start difference. First operand 12870 states and 21779 transitions. Second operand 4 states. [2020-07-20 02:22:12,814 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 02:22:40,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:22:40,034 INFO L93 Difference]: Finished difference Result 36509 states and 61606 transitions. [2020-07-20 02:22:40,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:22:40,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2020-07-20 02:22:40,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:22:40,089 INFO L225 Difference]: With dead ends: 36509 [2020-07-20 02:22:40,089 INFO L226 Difference]: Without dead ends: 24287 [2020-07-20 02:22:40,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:22:40,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2020-07-20 02:22:40,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 24283. [2020-07-20 02:22:40,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24283 states. [2020-07-20 02:22:40,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24283 states to 24283 states and 40885 transitions. [2020-07-20 02:22:40,721 INFO L78 Accepts]: Start accepts. Automaton has 24283 states and 40885 transitions. Word has length 404 [2020-07-20 02:22:40,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:22:40,721 INFO L479 AbstractCegarLoop]: Abstraction has 24283 states and 40885 transitions. [2020-07-20 02:22:40,722 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:22:40,722 INFO L276 IsEmpty]: Start isEmpty. Operand 24283 states and 40885 transitions. [2020-07-20 02:22:40,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-20 02:22:40,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:22:40,760 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] [2020-07-20 02:22:40,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-20 02:22:40,761 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:22:40,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:22:40,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1914746064, now seen corresponding path program 1 times [2020-07-20 02:22:40,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:22:40,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592527241] [2020-07-20 02:22:40,762 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:22:40,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:22:41,939 WARN L193 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:22:41,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:22:42,088 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 02:22:42,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592527241] [2020-07-20 02:22:42,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:22:42,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:22:42,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889838718] [2020-07-20 02:22:42,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:22:42,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:22:42,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:22:42,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:22:42,091 INFO L87 Difference]: Start difference. First operand 24283 states and 40885 transitions. Second operand 4 states. [2020-07-20 02:22:43,080 WARN L193 SmtUtils]: Spent 842.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 02:23:09,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:23:09,996 INFO L93 Difference]: Finished difference Result 44887 states and 75675 transitions. [2020-07-20 02:23:09,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:23:09,997 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-07-20 02:23:09,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:23:10,058 INFO L225 Difference]: With dead ends: 44887 [2020-07-20 02:23:10,058 INFO L226 Difference]: Without dead ends: 32654 [2020-07-20 02:23:10,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:23:10,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32654 states. [2020-07-20 02:23:11,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32654 to 32650. [2020-07-20 02:23:11,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32650 states. [2020-07-20 02:23:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32650 states to 32650 states and 54937 transitions. [2020-07-20 02:23:12,019 INFO L78 Accepts]: Start accepts. Automaton has 32650 states and 54937 transitions. Word has length 409 [2020-07-20 02:23:12,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:23:12,020 INFO L479 AbstractCegarLoop]: Abstraction has 32650 states and 54937 transitions. [2020-07-20 02:23:12,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:23:12,020 INFO L276 IsEmpty]: Start isEmpty. Operand 32650 states and 54937 transitions. [2020-07-20 02:23:12,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-07-20 02:23:12,055 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:23:12,055 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] [2020-07-20 02:23:12,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-20 02:23:12,055 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:23:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:23:12,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1002353059, now seen corresponding path program 1 times [2020-07-20 02:23:12,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:23:12,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835749112] [2020-07-20 02:23:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:23:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:23:13,211 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:23:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:23:13,357 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 02:23:13,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835749112] [2020-07-20 02:23:13,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:23:13,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:23:13,358 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409081627] [2020-07-20 02:23:13,359 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:23:13,359 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:23:13,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:23:13,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:23:13,360 INFO L87 Difference]: Start difference. First operand 32650 states and 54937 transitions. Second operand 4 states. [2020-07-20 02:23:14,231 WARN L193 SmtUtils]: Spent 820.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 02:23:42,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:23:42,853 INFO L93 Difference]: Finished difference Result 94233 states and 158132 transitions. [2020-07-20 02:23:42,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:23:42,854 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2020-07-20 02:23:42,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:23:42,937 INFO L225 Difference]: With dead ends: 94233 [2020-07-20 02:23:42,938 INFO L226 Difference]: Without dead ends: 62259 [2020-07-20 02:23:43,014 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:23:43,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62259 states. [2020-07-20 02:23:46,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62259 to 62255. [2020-07-20 02:23:46,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62255 states. [2020-07-20 02:23:46,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62255 states to 62255 states and 104167 transitions. [2020-07-20 02:23:46,162 INFO L78 Accepts]: Start accepts. Automaton has 62255 states and 104167 transitions. Word has length 413 [2020-07-20 02:23:46,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:23:46,163 INFO L479 AbstractCegarLoop]: Abstraction has 62255 states and 104167 transitions. [2020-07-20 02:23:46,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:23:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 62255 states and 104167 transitions. [2020-07-20 02:23:46,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-07-20 02:23:46,212 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:23:46,212 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] [2020-07-20 02:23:46,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-20 02:23:46,213 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:23:46,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:23:46,213 INFO L82 PathProgramCache]: Analyzing trace with hash 339386235, now seen corresponding path program 1 times [2020-07-20 02:23:46,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:23:46,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268578091] [2020-07-20 02:23:46,214 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:23:46,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:23:47,427 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:23:47,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:23:47,606 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 02:23:47,607 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268578091] [2020-07-20 02:23:47,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:23:47,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:23:47,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398406410] [2020-07-20 02:23:47,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:23:47,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:23:47,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:23:47,609 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:23:47,609 INFO L87 Difference]: Start difference. First operand 62255 states and 104167 transitions. Second operand 4 states. [2020-07-20 02:23:48,489 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 02:24:17,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:17,735 INFO L93 Difference]: Finished difference Result 116011 states and 194409 transitions. [2020-07-20 02:24:17,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:24:17,739 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-07-20 02:24:17,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:17,861 INFO L225 Difference]: With dead ends: 116011 [2020-07-20 02:24:17,862 INFO L226 Difference]: Without dead ends: 84026 [2020-07-20 02:24:17,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:24:18,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2020-07-20 02:24:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 84022. [2020-07-20 02:24:19,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84022 states. [2020-07-20 02:24:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84022 states to 84022 states and 140431 transitions. [2020-07-20 02:24:19,911 INFO L78 Accepts]: Start accepts. Automaton has 84022 states and 140431 transitions. Word has length 418 [2020-07-20 02:24:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:24:19,911 INFO L479 AbstractCegarLoop]: Abstraction has 84022 states and 140431 transitions. [2020-07-20 02:24:19,911 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:24:19,911 INFO L276 IsEmpty]: Start isEmpty. Operand 84022 states and 140431 transitions. [2020-07-20 02:24:19,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-07-20 02:24:19,997 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:24:19,997 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] [2020-07-20 02:24:19,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-20 02:24:19,998 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:24:19,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:24:19,998 INFO L82 PathProgramCache]: Analyzing trace with hash 1033340836, now seen corresponding path program 1 times [2020-07-20 02:24:19,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:24:19,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1362383746] [2020-07-20 02:24:19,999 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:24:20,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:21,126 WARN L193 SmtUtils]: Spent 800.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:24:21,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:24:21,327 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 02:24:21,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1362383746] [2020-07-20 02:24:21,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:24:21,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:24:21,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110370026] [2020-07-20 02:24:21,330 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:24:21,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:24:21,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:24:21,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:24:21,331 INFO L87 Difference]: Start difference. First operand 84022 states and 140431 transitions. Second operand 4 states. [2020-07-20 02:24:22,176 WARN L193 SmtUtils]: Spent 793.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-20 02:24:54,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:24:54,576 INFO L93 Difference]: Finished difference Result 243661 states and 406034 transitions. [2020-07-20 02:24:54,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:24:54,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2020-07-20 02:24:54,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:24:54,800 INFO L225 Difference]: With dead ends: 243661 [2020-07-20 02:24:54,800 INFO L226 Difference]: Without dead ends: 160343 [2020-07-20 02:24:54,879 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:24:54,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160343 states. [2020-07-20 02:25:01,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160343 to 160339. [2020-07-20 02:25:01,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160339 states. [2020-07-20 02:25:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160339 states to 160339 states and 266233 transitions. [2020-07-20 02:25:01,654 INFO L78 Accepts]: Start accepts. Automaton has 160339 states and 266233 transitions. Word has length 422 [2020-07-20 02:25:01,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:25:01,655 INFO L479 AbstractCegarLoop]: Abstraction has 160339 states and 266233 transitions. [2020-07-20 02:25:01,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:25:01,655 INFO L276 IsEmpty]: Start isEmpty. Operand 160339 states and 266233 transitions. [2020-07-20 02:25:01,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-20 02:25:01,773 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:25:01,774 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] [2020-07-20 02:25:01,774 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-20 02:25:01,774 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:25:01,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:25:01,775 INFO L82 PathProgramCache]: Analyzing trace with hash -986262280, now seen corresponding path program 1 times [2020-07-20 02:25:01,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:25:01,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695752827] [2020-07-20 02:25:01,775 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:25:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:25:02,908 WARN L193 SmtUtils]: Spent 847.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:25:02,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:25:03,706 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 02:25:03,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695752827] [2020-07-20 02:25:03,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:25:03,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-20 02:25:03,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697333507] [2020-07-20 02:25:03,707 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-20 02:25:03,707 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:25:03,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-20 02:25:03,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-20 02:25:03,708 INFO L87 Difference]: Start difference. First operand 160339 states and 266233 transitions. Second operand 4 states. [2020-07-20 02:25:04,658 WARN L193 SmtUtils]: Spent 906.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 02:25:39,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:25:39,176 INFO L93 Difference]: Finished difference Result 298271 states and 495971 transitions. [2020-07-20 02:25:39,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 02:25:39,177 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-07-20 02:25:39,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:25:39,486 INFO L225 Difference]: With dead ends: 298271 [2020-07-20 02:25:39,487 INFO L226 Difference]: Without dead ends: 214942 [2020-07-20 02:25:39,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:25:39,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214942 states. [2020-07-20 02:25:47,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214942 to 214938. [2020-07-20 02:25:47,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214938 states. [2020-07-20 02:25:47,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214938 states to 214938 states and 356165 transitions. [2020-07-20 02:25:47,374 INFO L78 Accepts]: Start accepts. Automaton has 214938 states and 356165 transitions. Word has length 427 [2020-07-20 02:25:47,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:25:47,375 INFO L479 AbstractCegarLoop]: Abstraction has 214938 states and 356165 transitions. [2020-07-20 02:25:47,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-20 02:25:47,375 INFO L276 IsEmpty]: Start isEmpty. Operand 214938 states and 356165 transitions. [2020-07-20 02:25:47,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-07-20 02:25:47,525 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:25:47,526 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] [2020-07-20 02:25:47,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-20 02:25:47,526 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:25:47,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:25:47,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1162904133, now seen corresponding path program 1 times [2020-07-20 02:25:47,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:25:47,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363315359] [2020-07-20 02:25:47,527 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:25:47,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:25:48,793 WARN L193 SmtUtils]: Spent 852.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:25:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:25:48,976 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 02:25:48,976 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363315359] [2020-07-20 02:25:48,976 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:25:48,976 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-20 02:25:48,977 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516782041] [2020-07-20 02:25:48,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 02:25:48,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:25:48,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 02:25:48,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-20 02:25:48,979 INFO L87 Difference]: Start difference. First operand 214938 states and 356165 transitions. Second operand 8 states. [2020-07-20 02:25:52,338 WARN L193 SmtUtils]: Spent 3.29 s on a formula simplification that was a NOOP. DAG size: 417 [2020-07-20 02:27:17,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:27:17,891 INFO L93 Difference]: Finished difference Result 1123724 states and 1865902 transitions. [2020-07-20 02:27:17,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-20 02:27:17,892 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-07-20 02:27:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:27:19,272 INFO L225 Difference]: With dead ends: 1123724 [2020-07-20 02:27:19,273 INFO L226 Difference]: Without dead ends: 909492 [2020-07-20 02:27:20,622 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-20 02:27:21,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909492 states. [2020-07-20 02:27:52,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909492 to 427813. [2020-07-20 02:27:52,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427813 states. [2020-07-20 02:28:00,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427813 states to 427813 states and 706031 transitions. [2020-07-20 02:28:00,063 INFO L78 Accepts]: Start accepts. Automaton has 427813 states and 706031 transitions. Word has length 431 [2020-07-20 02:28:00,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:28:00,064 INFO L479 AbstractCegarLoop]: Abstraction has 427813 states and 706031 transitions. [2020-07-20 02:28:00,064 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 02:28:00,064 INFO L276 IsEmpty]: Start isEmpty. Operand 427813 states and 706031 transitions. [2020-07-20 02:28:00,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-20 02:28:00,340 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:28:00,340 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] [2020-07-20 02:28:00,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-20 02:28:00,340 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:28:00,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:28:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash -657666499, now seen corresponding path program 1 times [2020-07-20 02:28:00,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:28:00,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776215983] [2020-07-20 02:28:00,341 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:28:00,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:28:01,856 WARN L193 SmtUtils]: Spent 868.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:28:01,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:28:01,992 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 02:28:01,993 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776215983] [2020-07-20 02:28:01,993 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:28:01,993 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:28:01,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524446804] [2020-07-20 02:28:01,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:28:01,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:28:01,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:28:01,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:28:01,995 INFO L87 Difference]: Start difference. First operand 427813 states and 706031 transitions. Second operand 5 states. [2020-07-20 02:28:02,946 WARN L193 SmtUtils]: Spent 877.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-20 02:29:06,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 02:29:06,229 INFO L93 Difference]: Finished difference Result 1272473 states and 2107267 transitions. [2020-07-20 02:29:06,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 02:29:06,231 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2020-07-20 02:29:06,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 02:29:07,613 INFO L225 Difference]: With dead ends: 1272473 [2020-07-20 02:29:07,613 INFO L226 Difference]: Without dead ends: 845366 [2020-07-20 02:29:07,999 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 02:29:08,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845366 states. [2020-07-20 02:29:55,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845366 to 705994. [2020-07-20 02:29:55,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705994 states. [2020-07-20 02:29:56,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705994 states to 705994 states and 1165461 transitions. [2020-07-20 02:29:56,489 INFO L78 Accepts]: Start accepts. Automaton has 705994 states and 1165461 transitions. Word has length 433 [2020-07-20 02:29:56,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 02:29:56,490 INFO L479 AbstractCegarLoop]: Abstraction has 705994 states and 1165461 transitions. [2020-07-20 02:29:56,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 02:29:56,490 INFO L276 IsEmpty]: Start isEmpty. Operand 705994 states and 1165461 transitions. [2020-07-20 02:30:05,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-20 02:30:05,417 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 02:30:05,418 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] [2020-07-20 02:30:05,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-20 02:30:05,418 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 02:30:05,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 02:30:05,419 INFO L82 PathProgramCache]: Analyzing trace with hash -628885910, now seen corresponding path program 1 times [2020-07-20 02:30:05,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_SMT_AM [2020-07-20 02:30:05,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596731076] [2020-07-20 02:30:05,419 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@39631046 [2020-07-20 02:30:05,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:30:06,615 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-20 02:30:06,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 02:30:06,762 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 02:30:06,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596731076] [2020-07-20 02:30:06,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 02:30:06,763 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 02:30:06,763 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840800044] [2020-07-20 02:30:06,764 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 02:30:06,764 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_SMT_AM [2020-07-20 02:30:06,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 02:30:06,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 02:30:06,765 INFO L87 Difference]: Start difference. First operand 705994 states and 1165461 transitions. Second operand 5 states. [2020-07-20 02:30:07,903 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 413