/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 -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 0.1.25-86f66a4 [2020-07-07 11:50:54,788 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:50:54,791 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:50:54,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:50:54,803 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:50:54,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:50:54,806 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:50:54,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:50:54,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:50:54,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:50:54,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:50:54,812 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:50:54,812 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:50:54,813 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:50:54,814 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:50:54,815 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:50:54,816 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:50:54,817 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:50:54,822 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:50:54,827 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:50:54,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:50:54,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:50:54,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:50:54,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:50:54,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:50:54,835 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:50:54,836 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:50:54,837 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:50:54,838 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:50:54,839 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:50:54,839 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:50:54,839 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:50:54,840 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:50:54,840 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:50:54,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:50:54,841 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:50:54,842 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 [2020-07-07 11:50:54,856 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:50:54,857 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:50:54,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:50:54,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:50:54,858 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:50:54,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:50:54,858 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:50:54,859 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:50:54,859 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:50:54,859 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:50:54,859 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:50:54,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:50:54,860 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:50:54,860 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:50:54,860 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:50:54,860 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:50:54,860 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:50:54,861 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:50:54,861 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:50:54,861 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:50:54,861 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:50:54,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:50:54,862 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:50:54,862 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:50:54,862 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:50:54,862 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:50:54,862 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:50:54,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:50:54,863 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:50:54,863 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:50:55,147 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:50:55,161 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:50:55,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:50:55,166 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:50:55,166 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:50:55,167 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-07 11:50:55,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99497221/59953210aea74c858096932c48ee8d6f/FLAG9a6599694 [2020-07-07 11:50:56,077 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:50:56,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-07 11:50:56,113 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99497221/59953210aea74c858096932c48ee8d6f/FLAG9a6599694 [2020-07-07 11:50:56,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a99497221/59953210aea74c858096932c48ee8d6f [2020-07-07 11:50:56,637 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:50:56,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:50:56,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:50:56,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:50:56,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:50:56,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:50:56" (1/1) ... [2020-07-07 11:50:56,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fe97047 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:50:56, skipping insertion in model container [2020-07-07 11:50:56,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:50:56" (1/1) ... [2020-07-07 11:50:56,658 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:50:56,917 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:50:59,287 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:50:59,308 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:51:01,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:51:01,041 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:51:01,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01 WrapperNode [2020-07-07 11:51:01,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:51:01,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:51:01,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:51:01,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:51:01,059 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,132 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (1/1) ... [2020-07-07 11:51:01,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:51:01,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:51:01,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:51:01,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:51:01,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (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 [2020-07-07 11:51:01,368 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:51:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:51:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 11:51:01,369 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:51:01,369 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:51:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-07-07 11:51:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-07-07 11:51:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-07-07 11:51:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:51:01,370 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 11:51:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-07-07 11:51:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-07-07 11:51:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-07-07 11:51:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-07-07 11:51:01,371 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-07-07 11:51:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-07-07 11:51:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-07-07 11:51:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-07-07 11:51:01,372 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-07-07 11:51:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:51:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:51:01,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:51:07,806 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:51:07,806 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 11:51:07,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:51:07 BoogieIcfgContainer [2020-07-07 11:51:07,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:51:07,830 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:51:07,830 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:51:07,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:51:07,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:50:56" (1/3) ... [2020-07-07 11:51:07,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e662f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:51:07, skipping insertion in model container [2020-07-07 11:51:07,835 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:51:01" (2/3) ... [2020-07-07 11:51:07,835 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61e662f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:51:07, skipping insertion in model container [2020-07-07 11:51:07,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:51:07" (3/3) ... [2020-07-07 11:51:07,840 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-07-07 11:51:07,852 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:51:07,866 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-07-07 11:51:07,881 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-07-07 11:51:07,919 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:51:07,919 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:51:07,920 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:51:07,920 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:51:07,920 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:51:07,920 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:51:07,920 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:51:07,920 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:51:07,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2515 states. [2020-07-07 11:51:08,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2020-07-07 11:51:08,034 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:51:08,036 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] [2020-07-07 11:51:08,037 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:51:08,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:51:08,044 INFO L82 PathProgramCache]: Analyzing trace with hash -1936618047, now seen corresponding path program 1 times [2020-07-07 11:51:08,054 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:51:08,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103755203] [2020-07-07 11:51:08,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:51:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:10,294 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:51:10,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:10,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:51:10,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103755203] [2020-07-07 11:51:10,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:51:10,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:51:10,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318289775] [2020-07-07 11:51:10,529 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:51:10,529 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:51:10,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:51:10,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:51:10,546 INFO L87 Difference]: Start difference. First operand 2515 states. Second operand 5 states. [2020-07-07 11:51:28,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:51:28,082 INFO L93 Difference]: Finished difference Result 4483 states and 7776 transitions. [2020-07-07 11:51:28,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:51:28,084 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 322 [2020-07-07 11:51:28,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:51:28,139 INFO L225 Difference]: With dead ends: 4483 [2020-07-07 11:51:28,139 INFO L226 Difference]: Without dead ends: 2511 [2020-07-07 11:51:28,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:51:28,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2511 states. [2020-07-07 11:51:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2511 to 2511. [2020-07-07 11:51:28,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2511 states. [2020-07-07 11:51:28,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2511 states to 2511 states and 4317 transitions. [2020-07-07 11:51:28,394 INFO L78 Accepts]: Start accepts. Automaton has 2511 states and 4317 transitions. Word has length 322 [2020-07-07 11:51:28,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:51:28,397 INFO L479 AbstractCegarLoop]: Abstraction has 2511 states and 4317 transitions. [2020-07-07 11:51:28,398 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:51:28,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2511 states and 4317 transitions. [2020-07-07 11:51:28,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-07-07 11:51:28,419 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:51:28,420 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] [2020-07-07 11:51:28,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:51:28,421 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:51:28,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:51:28,422 INFO L82 PathProgramCache]: Analyzing trace with hash -1448784548, now seen corresponding path program 1 times [2020-07-07 11:51:28,422 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:51:28,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442211937] [2020-07-07 11:51:28,423 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:51:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:29,951 WARN L193 SmtUtils]: Spent 848.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:51:29,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:30,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:51:30,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442211937] [2020-07-07 11:51:30,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:51:30,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:51:30,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494425890] [2020-07-07 11:51:30,363 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:51:30,364 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:51:30,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:51:30,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:30,365 INFO L87 Difference]: Start difference. First operand 2511 states and 4317 transitions. Second operand 4 states. [2020-07-07 11:51:31,401 WARN L193 SmtUtils]: Spent 955.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-07 11:51:57,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:51:57,827 INFO L93 Difference]: Finished difference Result 6234 states and 10658 transitions. [2020-07-07 11:51:57,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:51:57,828 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 386 [2020-07-07 11:51:57,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:51:57,851 INFO L225 Difference]: With dead ends: 6234 [2020-07-07 11:51:57,852 INFO L226 Difference]: Without dead ends: 4315 [2020-07-07 11:51:57,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:51:57,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4315 states. [2020-07-07 11:51:57,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4315 to 4311. [2020-07-07 11:51:57,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4311 states. [2020-07-07 11:51:57,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4311 states to 4311 states and 7334 transitions. [2020-07-07 11:51:57,973 INFO L78 Accepts]: Start accepts. Automaton has 4311 states and 7334 transitions. Word has length 386 [2020-07-07 11:51:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:51:57,974 INFO L479 AbstractCegarLoop]: Abstraction has 4311 states and 7334 transitions. [2020-07-07 11:51:57,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:51:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 4311 states and 7334 transitions. [2020-07-07 11:51:57,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-07-07 11:51:57,989 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:51:57,989 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] [2020-07-07 11:51:57,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:51:57,990 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:51:57,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:51:57,991 INFO L82 PathProgramCache]: Analyzing trace with hash 533740400, now seen corresponding path program 1 times [2020-07-07 11:51:57,991 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:51:57,991 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864738006] [2020-07-07 11:51:57,992 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:51:58,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:59,329 WARN L193 SmtUtils]: Spent 843.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:51:59,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:51:59,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:51:59,513 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864738006] [2020-07-07 11:51:59,513 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:51:59,513 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:51:59,513 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631031795] [2020-07-07 11:51:59,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:51:59,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:51:59,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:51:59,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:51:59,515 INFO L87 Difference]: Start difference. First operand 4311 states and 7334 transitions. Second operand 4 states. [2020-07-07 11:52:00,435 WARN L193 SmtUtils]: Spent 863.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-07 11:52:26,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:52:26,588 INFO L93 Difference]: Finished difference Result 7280 states and 12405 transitions. [2020-07-07 11:52:26,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:52:26,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 391 [2020-07-07 11:52:26,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:52:26,615 INFO L225 Difference]: With dead ends: 7280 [2020-07-07 11:52:26,615 INFO L226 Difference]: Without dead ends: 5350 [2020-07-07 11:52:26,621 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 [2020-07-07 11:52:26,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5350 states. [2020-07-07 11:52:26,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5350 to 5346. [2020-07-07 11:52:26,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5346 states. [2020-07-07 11:52:26,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5346 states to 5346 states and 9097 transitions. [2020-07-07 11:52:26,784 INFO L78 Accepts]: Start accepts. Automaton has 5346 states and 9097 transitions. Word has length 391 [2020-07-07 11:52:26,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:52:26,785 INFO L479 AbstractCegarLoop]: Abstraction has 5346 states and 9097 transitions. [2020-07-07 11:52:26,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:52:26,786 INFO L276 IsEmpty]: Start isEmpty. Operand 5346 states and 9097 transitions. [2020-07-07 11:52:26,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 396 [2020-07-07 11:52:26,805 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:52:26,806 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] [2020-07-07 11:52:26,807 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:52:26,807 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:52:26,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:52:26,808 INFO L82 PathProgramCache]: Analyzing trace with hash 1980960461, now seen corresponding path program 1 times [2020-07-07 11:52:26,808 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:52:26,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [373108804] [2020-07-07 11:52:26,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:52:27,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:28,001 WARN L193 SmtUtils]: Spent 747.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:52:28,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:28,162 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:52:28,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [373108804] [2020-07-07 11:52:28,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:52:28,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:52:28,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906498267] [2020-07-07 11:52:28,164 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:52:28,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:52:28,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:52:28,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:52:28,165 INFO L87 Difference]: Start difference. First operand 5346 states and 9097 transitions. Second operand 4 states. [2020-07-07 11:52:29,014 WARN L193 SmtUtils]: Spent 795.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-07 11:52:55,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:52:55,652 INFO L93 Difference]: Finished difference Result 14521 states and 24616 transitions. [2020-07-07 11:52:55,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:52:55,652 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 395 [2020-07-07 11:52:55,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:52:55,697 INFO L225 Difference]: With dead ends: 14521 [2020-07-07 11:52:55,698 INFO L226 Difference]: Without dead ends: 9795 [2020-07-07 11:52:55,709 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 [2020-07-07 11:52:55,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9795 states. [2020-07-07 11:52:55,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9795 to 9791. [2020-07-07 11:52:55,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9791 states. [2020-07-07 11:52:56,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9791 states to 9791 states and 16577 transitions. [2020-07-07 11:52:56,084 INFO L78 Accepts]: Start accepts. Automaton has 9791 states and 16577 transitions. Word has length 395 [2020-07-07 11:52:56,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:52:56,085 INFO L479 AbstractCegarLoop]: Abstraction has 9791 states and 16577 transitions. [2020-07-07 11:52:56,086 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:52:56,087 INFO L276 IsEmpty]: Start isEmpty. Operand 9791 states and 16577 transitions. [2020-07-07 11:52:56,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-07-07 11:52:56,117 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:52:56,118 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] [2020-07-07 11:52:56,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:52:56,118 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:52:56,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:52:56,119 INFO L82 PathProgramCache]: Analyzing trace with hash 155302923, now seen corresponding path program 1 times [2020-07-07 11:52:56,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:52:56,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021311815] [2020-07-07 11:52:56,120 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:52:56,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:57,280 WARN L193 SmtUtils]: Spent 769.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:52:57,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:52:57,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:52:57,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021311815] [2020-07-07 11:52:57,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:52:57,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:52:57,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104066882] [2020-07-07 11:52:57,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:52:57,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:52:57,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:52:57,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:52:57,434 INFO L87 Difference]: Start difference. First operand 9791 states and 16577 transitions. Second operand 4 states. [2020-07-07 11:52:58,284 WARN L193 SmtUtils]: Spent 792.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-07 11:53:24,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:53:24,757 INFO L93 Difference]: Finished difference Result 17611 states and 29837 transitions. [2020-07-07 11:53:24,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:53:24,758 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 400 [2020-07-07 11:53:24,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:53:24,803 INFO L225 Difference]: With dead ends: 17611 [2020-07-07 11:53:24,804 INFO L226 Difference]: Without dead ends: 12874 [2020-07-07 11:53:24,816 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 [2020-07-07 11:53:24,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12874 states. [2020-07-07 11:53:25,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12874 to 12870. [2020-07-07 11:53:25,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12870 states. [2020-07-07 11:53:25,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12870 states to 12870 states and 21779 transitions. [2020-07-07 11:53:25,176 INFO L78 Accepts]: Start accepts. Automaton has 12870 states and 21779 transitions. Word has length 400 [2020-07-07 11:53:25,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:53:25,177 INFO L479 AbstractCegarLoop]: Abstraction has 12870 states and 21779 transitions. [2020-07-07 11:53:25,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:53:25,177 INFO L276 IsEmpty]: Start isEmpty. Operand 12870 states and 21779 transitions. [2020-07-07 11:53:25,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2020-07-07 11:53:25,203 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:53:25,204 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] [2020-07-07 11:53:25,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:53:25,204 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:53:25,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:53:25,205 INFO L82 PathProgramCache]: Analyzing trace with hash -571279020, now seen corresponding path program 1 times [2020-07-07 11:53:25,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:53:25,207 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132441795] [2020-07-07 11:53:25,207 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:53:25,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:53:26,326 WARN L193 SmtUtils]: Spent 762.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:53:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:53:26,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:53:26,484 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132441795] [2020-07-07 11:53:26,484 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:53:26,485 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:53:26,485 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707788732] [2020-07-07 11:53:26,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:53:26,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:53:26,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:53:26,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:53:26,493 INFO L87 Difference]: Start difference. First operand 12870 states and 21779 transitions. Second operand 4 states. [2020-07-07 11:53:27,321 WARN L193 SmtUtils]: Spent 774.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-07 11:53:54,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:53:54,518 INFO L93 Difference]: Finished difference Result 36509 states and 61606 transitions. [2020-07-07 11:53:54,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:53:54,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 404 [2020-07-07 11:53:54,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:53:54,593 INFO L225 Difference]: With dead ends: 36509 [2020-07-07 11:53:54,594 INFO L226 Difference]: Without dead ends: 24287 [2020-07-07 11:53:54,627 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 [2020-07-07 11:53:54,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24287 states. [2020-07-07 11:53:55,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24287 to 24283. [2020-07-07 11:53:55,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24283 states. [2020-07-07 11:53:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24283 states to 24283 states and 40885 transitions. [2020-07-07 11:53:55,285 INFO L78 Accepts]: Start accepts. Automaton has 24283 states and 40885 transitions. Word has length 404 [2020-07-07 11:53:55,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:53:55,286 INFO L479 AbstractCegarLoop]: Abstraction has 24283 states and 40885 transitions. [2020-07-07 11:53:55,286 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:53:55,286 INFO L276 IsEmpty]: Start isEmpty. Operand 24283 states and 40885 transitions. [2020-07-07 11:53:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 410 [2020-07-07 11:53:55,332 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:53:55,332 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] [2020-07-07 11:53:55,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:53:55,333 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:53:55,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:53:55,333 INFO L82 PathProgramCache]: Analyzing trace with hash -1914746064, now seen corresponding path program 1 times [2020-07-07 11:53:55,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:53:55,334 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1202206745] [2020-07-07 11:53:55,334 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:53:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:53:56,450 WARN L193 SmtUtils]: Spent 810.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:53:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:53:56,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:53:56,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1202206745] [2020-07-07 11:53:56,591 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:53:56,591 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:53:56,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73614659] [2020-07-07 11:53:56,592 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:53:56,592 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:53:56,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:53:56,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:53:56,593 INFO L87 Difference]: Start difference. First operand 24283 states and 40885 transitions. Second operand 4 states. [2020-07-07 11:53:57,463 WARN L193 SmtUtils]: Spent 826.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-07 11:54:25,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:54:25,520 INFO L93 Difference]: Finished difference Result 44887 states and 75675 transitions. [2020-07-07 11:54:25,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:54:25,521 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 409 [2020-07-07 11:54:25,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:54:25,610 INFO L225 Difference]: With dead ends: 44887 [2020-07-07 11:54:25,610 INFO L226 Difference]: Without dead ends: 32654 [2020-07-07 11:54:25,643 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 [2020-07-07 11:54:25,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32654 states. [2020-07-07 11:54:26,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32654 to 32650. [2020-07-07 11:54:26,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32650 states. [2020-07-07 11:54:26,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32650 states to 32650 states and 54937 transitions. [2020-07-07 11:54:26,499 INFO L78 Accepts]: Start accepts. Automaton has 32650 states and 54937 transitions. Word has length 409 [2020-07-07 11:54:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:54:26,499 INFO L479 AbstractCegarLoop]: Abstraction has 32650 states and 54937 transitions. [2020-07-07 11:54:26,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:54:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 32650 states and 54937 transitions. [2020-07-07 11:54:26,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 414 [2020-07-07 11:54:26,544 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:54:26,544 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] [2020-07-07 11:54:26,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:54:26,545 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:54:26,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:54:26,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1002353059, now seen corresponding path program 1 times [2020-07-07 11:54:26,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:54:26,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286127376] [2020-07-07 11:54:26,546 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:54:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:54:27,728 WARN L193 SmtUtils]: Spent 888.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:54:27,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:54:27,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:54:27,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286127376] [2020-07-07 11:54:27,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:54:27,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:54:27,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411039007] [2020-07-07 11:54:27,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:54:27,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:54:27,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:54:27,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:54:27,923 INFO L87 Difference]: Start difference. First operand 32650 states and 54937 transitions. Second operand 4 states. [2020-07-07 11:54:28,835 WARN L193 SmtUtils]: Spent 853.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-07 11:54:57,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:54:57,617 INFO L93 Difference]: Finished difference Result 94233 states and 158132 transitions. [2020-07-07 11:54:57,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:54:57,618 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 413 [2020-07-07 11:54:57,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:54:57,709 INFO L225 Difference]: With dead ends: 94233 [2020-07-07 11:54:57,709 INFO L226 Difference]: Without dead ends: 62259 [2020-07-07 11:54:57,773 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 [2020-07-07 11:54:57,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62259 states. [2020-07-07 11:54:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62259 to 62255. [2020-07-07 11:54:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62255 states. [2020-07-07 11:54:58,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62255 states to 62255 states and 104167 transitions. [2020-07-07 11:54:58,971 INFO L78 Accepts]: Start accepts. Automaton has 62255 states and 104167 transitions. Word has length 413 [2020-07-07 11:54:58,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:54:58,973 INFO L479 AbstractCegarLoop]: Abstraction has 62255 states and 104167 transitions. [2020-07-07 11:54:58,973 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:54:58,973 INFO L276 IsEmpty]: Start isEmpty. Operand 62255 states and 104167 transitions. [2020-07-07 11:54:59,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 419 [2020-07-07 11:54:59,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:54:59,021 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] [2020-07-07 11:54:59,022 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:54:59,022 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:54:59,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:54:59,022 INFO L82 PathProgramCache]: Analyzing trace with hash 339386235, now seen corresponding path program 1 times [2020-07-07 11:54:59,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:54:59,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442656236] [2020-07-07 11:54:59,023 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:55:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:55:01,709 WARN L193 SmtUtils]: Spent 807.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:55:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:55:01,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:55:01,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442656236] [2020-07-07 11:55:01,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:55:01,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:55:01,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328750507] [2020-07-07 11:55:01,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:55:01,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:55:01,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:55:01,885 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:55:01,885 INFO L87 Difference]: Start difference. First operand 62255 states and 104167 transitions. Second operand 4 states. [2020-07-07 11:55:02,785 WARN L193 SmtUtils]: Spent 855.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-07 11:55:31,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:55:31,076 INFO L93 Difference]: Finished difference Result 116011 states and 194409 transitions. [2020-07-07 11:55:31,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:55:31,080 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 418 [2020-07-07 11:55:31,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:55:31,193 INFO L225 Difference]: With dead ends: 116011 [2020-07-07 11:55:31,194 INFO L226 Difference]: Without dead ends: 84026 [2020-07-07 11:55:31,253 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 [2020-07-07 11:55:31,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84026 states. [2020-07-07 11:55:32,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84026 to 84022. [2020-07-07 11:55:32,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84022 states. [2020-07-07 11:55:32,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84022 states to 84022 states and 140431 transitions. [2020-07-07 11:55:32,969 INFO L78 Accepts]: Start accepts. Automaton has 84022 states and 140431 transitions. Word has length 418 [2020-07-07 11:55:32,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:55:32,969 INFO L479 AbstractCegarLoop]: Abstraction has 84022 states and 140431 transitions. [2020-07-07 11:55:32,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:55:32,970 INFO L276 IsEmpty]: Start isEmpty. Operand 84022 states and 140431 transitions. [2020-07-07 11:55:33,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2020-07-07 11:55:33,044 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:55:33,044 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] [2020-07-07 11:55:33,044 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:55:33,044 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:55:33,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:55:33,045 INFO L82 PathProgramCache]: Analyzing trace with hash 1033340836, now seen corresponding path program 1 times [2020-07-07 11:55:33,045 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:55:33,045 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047956160] [2020-07-07 11:55:33,045 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:55:33,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:55:34,217 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:55:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:55:34,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:55:34,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047956160] [2020-07-07 11:55:34,448 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:55:34,448 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:55:34,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399442110] [2020-07-07 11:55:34,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:55:34,451 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:55:34,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:55:34,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:55:34,452 INFO L87 Difference]: Start difference. First operand 84022 states and 140431 transitions. Second operand 4 states. [2020-07-07 11:55:35,362 WARN L193 SmtUtils]: Spent 844.00 ms on a formula simplification that was a NOOP. DAG size: 411 [2020-07-07 11:56:06,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:56:06,733 INFO L93 Difference]: Finished difference Result 243661 states and 406034 transitions. [2020-07-07 11:56:06,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:56:06,734 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 422 [2020-07-07 11:56:06,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:56:06,948 INFO L225 Difference]: With dead ends: 243661 [2020-07-07 11:56:06,948 INFO L226 Difference]: Without dead ends: 160343 [2020-07-07 11:56:07,046 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 [2020-07-07 11:56:07,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160343 states. [2020-07-07 11:56:13,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160343 to 160339. [2020-07-07 11:56:13,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160339 states. [2020-07-07 11:56:13,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160339 states to 160339 states and 266233 transitions. [2020-07-07 11:56:13,346 INFO L78 Accepts]: Start accepts. Automaton has 160339 states and 266233 transitions. Word has length 422 [2020-07-07 11:56:13,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:56:13,347 INFO L479 AbstractCegarLoop]: Abstraction has 160339 states and 266233 transitions. [2020-07-07 11:56:13,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:56:13,347 INFO L276 IsEmpty]: Start isEmpty. Operand 160339 states and 266233 transitions. [2020-07-07 11:56:13,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 428 [2020-07-07 11:56:13,469 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:56:13,470 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] [2020-07-07 11:56:13,470 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:56:13,470 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:56:13,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:56:13,471 INFO L82 PathProgramCache]: Analyzing trace with hash -986262280, now seen corresponding path program 1 times [2020-07-07 11:56:13,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:56:13,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773914581] [2020-07-07 11:56:13,472 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:56:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:56:14,617 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:56:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:56:14,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:56:14,790 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773914581] [2020-07-07 11:56:14,790 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:56:14,790 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 11:56:14,790 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612814790] [2020-07-07 11:56:14,791 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 11:56:14,791 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:56:14,791 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 11:56:14,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 11:56:14,792 INFO L87 Difference]: Start difference. First operand 160339 states and 266233 transitions. Second operand 4 states. [2020-07-07 11:56:15,724 WARN L193 SmtUtils]: Spent 885.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-07 11:56:48,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:56:48,592 INFO L93 Difference]: Finished difference Result 298271 states and 495971 transitions. [2020-07-07 11:56:48,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:56:48,593 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 427 [2020-07-07 11:56:48,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:56:48,886 INFO L225 Difference]: With dead ends: 298271 [2020-07-07 11:56:48,887 INFO L226 Difference]: Without dead ends: 214942 [2020-07-07 11:56:48,990 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 [2020-07-07 11:56:49,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214942 states. [2020-07-07 11:56:57,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214942 to 214938. [2020-07-07 11:56:57,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 214938 states. [2020-07-07 11:56:57,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214938 states to 214938 states and 356165 transitions. [2020-07-07 11:56:57,853 INFO L78 Accepts]: Start accepts. Automaton has 214938 states and 356165 transitions. Word has length 427 [2020-07-07 11:56:57,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:56:57,854 INFO L479 AbstractCegarLoop]: Abstraction has 214938 states and 356165 transitions. [2020-07-07 11:56:57,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 11:56:57,854 INFO L276 IsEmpty]: Start isEmpty. Operand 214938 states and 356165 transitions. [2020-07-07 11:56:57,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-07-07 11:56:57,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:56:57,987 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] [2020-07-07 11:56:57,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:56:57,987 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:56:57,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:56:57,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1162904133, now seen corresponding path program 1 times [2020-07-07 11:56:57,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:56:57,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97140742] [2020-07-07 11:56:57,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:56:58,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:56:59,303 WARN L193 SmtUtils]: Spent 816.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:56:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:57:02,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:57:02,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97140742] [2020-07-07 11:57:02,734 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:57:02,734 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 11:57:02,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013301052] [2020-07-07 11:57:02,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 11:57:02,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:57:02,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 11:57:02,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:57:02,736 INFO L87 Difference]: Start difference. First operand 214938 states and 356165 transitions. Second operand 8 states. [2020-07-07 11:57:04,661 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 421 DAG size of output: 417 [2020-07-07 11:58:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:58:35,049 INFO L93 Difference]: Finished difference Result 1210875 states and 2010756 transitions. [2020-07-07 11:58:35,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 11:58:35,051 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-07-07 11:58:35,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:58:37,147 INFO L225 Difference]: With dead ends: 1210875 [2020-07-07 11:58:37,147 INFO L226 Difference]: Without dead ends: 996643 [2020-07-07 11:58:37,408 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2020-07-07 11:58:38,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 996643 states. [2020-07-07 11:59:06,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 996643 to 427813. [2020-07-07 11:59:06,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427813 states. [2020-07-07 11:59:07,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427813 states to 427813 states and 706031 transitions. [2020-07-07 11:59:07,728 INFO L78 Accepts]: Start accepts. Automaton has 427813 states and 706031 transitions. Word has length 431 [2020-07-07 11:59:07,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:59:07,729 INFO L479 AbstractCegarLoop]: Abstraction has 427813 states and 706031 transitions. [2020-07-07 11:59:07,729 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 11:59:07,729 INFO L276 IsEmpty]: Start isEmpty. Operand 427813 states and 706031 transitions. [2020-07-07 11:59:08,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 434 [2020-07-07 11:59:08,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:59:08,015 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] [2020-07-07 11:59:08,015 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:59:08,015 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:59:08,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:59:08,015 INFO L82 PathProgramCache]: Analyzing trace with hash -657666499, now seen corresponding path program 1 times [2020-07-07 11:59:08,016 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:59:08,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957615345] [2020-07-07 11:59:08,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:59:08,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:59:09,509 WARN L193 SmtUtils]: Spent 884.00 ms on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 11:59:09,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:59:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:59:09,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957615345] [2020-07-07 11:59:09,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:59:09,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:59:09,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779855113] [2020-07-07 11:59:09,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:59:09,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:59:09,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:59:09,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:59:09,671 INFO L87 Difference]: Start difference. First operand 427813 states and 706031 transitions. Second operand 5 states. [2020-07-07 11:59:10,667 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification that was a NOOP. DAG size: 413 [2020-07-07 12:00:18,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 12:00:18,672 INFO L93 Difference]: Finished difference Result 1272473 states and 2107267 transitions. [2020-07-07 12:00:18,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 12:00:18,674 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 433 [2020-07-07 12:00:18,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 12:00:20,415 INFO L225 Difference]: With dead ends: 1272473 [2020-07-07 12:00:20,416 INFO L226 Difference]: Without dead ends: 845366 [2020-07-07 12:00:20,741 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 [2020-07-07 12:00:21,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 845366 states. [2020-07-07 12:01:06,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 845366 to 705994. [2020-07-07 12:01:06,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 705994 states. [2020-07-07 12:01:07,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 705994 states to 705994 states and 1165461 transitions. [2020-07-07 12:01:07,940 INFO L78 Accepts]: Start accepts. Automaton has 705994 states and 1165461 transitions. Word has length 433 [2020-07-07 12:01:07,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 12:01:07,940 INFO L479 AbstractCegarLoop]: Abstraction has 705994 states and 1165461 transitions. [2020-07-07 12:01:07,940 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 12:01:07,941 INFO L276 IsEmpty]: Start isEmpty. Operand 705994 states and 1165461 transitions. [2020-07-07 12:01:08,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 435 [2020-07-07 12:01:08,530 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 12:01:08,530 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] [2020-07-07 12:01:08,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 12:01:08,531 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 12:01:08,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 12:01:08,531 INFO L82 PathProgramCache]: Analyzing trace with hash -628885910, now seen corresponding path program 1 times [2020-07-07 12:01:08,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 12:01:08,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470418675] [2020-07-07 12:01:08,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 12:01:08,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:01:10,754 WARN L193 SmtUtils]: Spent 1.84 s on a formula simplification that was a NOOP. DAG size: 409 [2020-07-07 12:01:10,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 12:01:10,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 12:01:10,883 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470418675] [2020-07-07 12:01:10,883 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 12:01:10,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 12:01:10,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943570163] [2020-07-07 12:01:10,884 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 12:01:10,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 12:01:10,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 12:01:10,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 12:01:10,884 INFO L87 Difference]: Start difference. First operand 705994 states and 1165461 transitions. Second operand 5 states. [2020-07-07 12:01:11,838 WARN L193 SmtUtils]: Spent 883.00 ms on a formula simplification that was a NOOP. DAG size: 413