/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_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 13:58:35,711 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 13:58:35,715 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 13:58:35,742 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 13:58:35,742 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 13:58:35,744 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 13:58:35,745 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 13:58:35,747 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 13:58:35,749 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 13:58:35,750 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 13:58:35,751 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 13:58:35,752 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 13:58:35,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 13:58:35,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 13:58:35,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 13:58:35,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 13:58:35,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 13:58:35,759 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 13:58:35,760 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 13:58:35,762 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 13:58:35,764 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 13:58:35,765 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 13:58:35,766 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 13:58:35,767 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 13:58:35,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 13:58:35,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 13:58:35,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 13:58:35,771 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 13:58:35,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 13:58:35,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 13:58:35,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 13:58:35,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 13:58:35,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 13:58:35,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 13:58:35,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 13:58:35,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 13:58:35,778 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 13:58:35,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 13:58:35,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 13:58:35,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 13:58:35,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 13:58:35,781 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-04 13:58:35,808 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 13:58:35,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 13:58:35,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-04 13:58:35,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-04 13:58:35,810 INFO L138 SettingsManager]: * Use SBE=true [2020-09-04 13:58:35,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 13:58:35,810 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 13:58:35,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 13:58:35,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 13:58:35,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 13:58:35,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 13:58:35,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 13:58:35,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 13:58:35,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 13:58:35,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 13:58:35,812 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 13:58:35,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 13:58:35,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 13:58:35,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-04 13:58:35,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 13:58:35,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 13:58:35,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 13:58:35,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 13:58:35,814 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-04 13:58:35,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-04 13:58:35,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-04 13:58:35,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-04 13:58:35,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 13:58:35,815 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-04 13:58:35,815 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-09-04 13:58:36,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 13:58:36,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 13:58:36,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 13:58:36,290 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 13:58:36,290 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 13:58:36,291 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-04 13:58:36,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77419442e/f119af4bd9074e8c893fb9ce5cc473b2/FLAGfbd77f124 [2020-09-04 13:58:37,215 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 13:58:37,216 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-04 13:58:37,242 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77419442e/f119af4bd9074e8c893fb9ce5cc473b2/FLAGfbd77f124 [2020-09-04 13:58:37,271 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/77419442e/f119af4bd9074e8c893fb9ce5cc473b2 [2020-09-04 13:58:37,286 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 13:58:37,288 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 13:58:37,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 13:58:37,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 13:58:37,294 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 13:58:37,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:58:37" (1/1) ... [2020-09-04 13:58:37,299 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2876d654 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:37, skipping insertion in model container [2020-09-04 13:58:37,300 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 01:58:37" (1/1) ... [2020-09-04 13:58:37,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 13:58:37,588 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 13:58:39,981 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:58:40,003 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 13:58:41,519 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 13:58:41,564 INFO L208 MainTranslator]: Completed translation [2020-09-04 13:58:41,566 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41 WrapperNode [2020-09-04 13:58:41,566 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 13:58:41,567 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 13:58:41,567 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 13:58:41,567 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 13:58:41,585 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,588 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,718 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,769 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,802 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... [2020-09-04 13:58:41,840 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 13:58:41,841 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 13:58:41,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 13:58:41,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 13:58:41,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 13:58:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 13:58:41,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 13:58:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-04 13:58:41,947 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 13:58:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 13:58:41,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-09-04 13:58:41,948 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-04 13:58:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-09-04 13:58:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 13:58:41,949 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-04 13:58:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-09-04 13:58:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-09-04 13:58:41,950 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-09-04 13:58:41,951 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-09-04 13:58:41,952 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-09-04 13:58:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2020-09-04 13:58:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2020-09-04 13:58:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-09-04 13:58:41,953 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-09-04 13:58:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 13:58:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 13:58:41,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 13:58:48,213 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 13:58:48,214 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 13:58:48,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:58:48 BoogieIcfgContainer [2020-09-04 13:58:48,228 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 13:58:48,229 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 13:58:48,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 13:58:48,233 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 13:58:48,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 01:58:37" (1/3) ... [2020-09-04 13:58:48,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b219576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:58:48, skipping insertion in model container [2020-09-04 13:58:48,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 01:58:41" (2/3) ... [2020-09-04 13:58:48,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b219576 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 01:58:48, skipping insertion in model container [2020-09-04 13:58:48,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 01:58:48" (3/3) ... [2020-09-04 13:58:48,238 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.5.4.ufo.BOUNDED-10.pals.c.p+lhb-reducer.c [2020-09-04 13:58:48,251 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-09-04 13:58:48,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-09-04 13:58:48,287 INFO L251 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-09-04 13:58:48,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 13:58:48,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 13:58:48,328 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-09-04 13:58:48,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 13:58:48,328 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 13:58:48,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 13:58:48,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 13:58:48,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 13:58:48,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2249 states. [2020-09-04 13:58:48,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-09-04 13:58:48,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:58:48,432 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] [2020-09-04 13:58:48,433 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:58:48,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:58:48,439 INFO L82 PathProgramCache]: Analyzing trace with hash -2040294362, now seen corresponding path program 1 times [2020-09-04 13:58:48,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:58:48,451 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88027582] [2020-09-04 13:58:48,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:58:49,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:58:50,352 WARN L193 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 13:58:50,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:58:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:58:50,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:58:50,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88027582] [2020-09-04 13:58:50,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:58:50,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 13:58:50,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311153537] [2020-09-04 13:58:50,532 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 13:58:50,532 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:58:50,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 13:58:50,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 13:58:50,554 INFO L87 Difference]: Start difference. First operand 2249 states. Second operand 5 states. [2020-09-04 13:59:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:59:06,799 INFO L93 Difference]: Finished difference Result 3956 states and 6884 transitions. [2020-09-04 13:59:06,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 13:59:06,802 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 290 [2020-09-04 13:59:06,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:59:06,846 INFO L225 Difference]: With dead ends: 3956 [2020-09-04 13:59:06,846 INFO L226 Difference]: Without dead ends: 2245 [2020-09-04 13:59:06,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 13:59:06,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2245 states. [2020-09-04 13:59:07,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2245 to 2245. [2020-09-04 13:59:07,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2245 states. [2020-09-04 13:59:07,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2245 states to 2245 states and 3871 transitions. [2020-09-04 13:59:07,055 INFO L78 Accepts]: Start accepts. Automaton has 2245 states and 3871 transitions. Word has length 290 [2020-09-04 13:59:07,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:59:07,059 INFO L479 AbstractCegarLoop]: Abstraction has 2245 states and 3871 transitions. [2020-09-04 13:59:07,059 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 13:59:07,060 INFO L276 IsEmpty]: Start isEmpty. Operand 2245 states and 3871 transitions. [2020-09-04 13:59:07,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 350 [2020-09-04 13:59:07,072 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:59:07,073 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] [2020-09-04 13:59:07,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 13:59:07,074 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:59:07,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:59:07,075 INFO L82 PathProgramCache]: Analyzing trace with hash -875879150, now seen corresponding path program 1 times [2020-09-04 13:59:07,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:59:07,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524661432] [2020-09-04 13:59:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:59:07,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:59:08,636 WARN L193 SmtUtils]: Spent 858.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 13:59:08,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:59:08,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:59:08,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:59:08,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524661432] [2020-09-04 13:59:08,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:59:08,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:59:08,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791793587] [2020-09-04 13:59:08,823 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:59:08,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:59:08,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:59:08,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:59:08,824 INFO L87 Difference]: Start difference. First operand 2245 states and 3871 transitions. Second operand 4 states. [2020-09-04 13:59:09,848 WARN L193 SmtUtils]: Spent 958.00 ms on a formula simplification that was a NOOP. DAG size: 396 [2020-09-04 13:59:35,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 13:59:35,233 INFO L93 Difference]: Finished difference Result 5464 states and 9356 transitions. [2020-09-04 13:59:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 13:59:35,234 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 349 [2020-09-04 13:59:35,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 13:59:35,256 INFO L225 Difference]: With dead ends: 5464 [2020-09-04 13:59:35,257 INFO L226 Difference]: Without dead ends: 3801 [2020-09-04 13:59:35,262 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 [2020-09-04 13:59:35,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-09-04 13:59:35,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3797. [2020-09-04 13:59:35,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3797 states. [2020-09-04 13:59:35,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3797 states to 3797 states and 6464 transitions. [2020-09-04 13:59:35,373 INFO L78 Accepts]: Start accepts. Automaton has 3797 states and 6464 transitions. Word has length 349 [2020-09-04 13:59:35,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 13:59:35,374 INFO L479 AbstractCegarLoop]: Abstraction has 3797 states and 6464 transitions. [2020-09-04 13:59:35,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 13:59:35,375 INFO L276 IsEmpty]: Start isEmpty. Operand 3797 states and 6464 transitions. [2020-09-04 13:59:35,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 354 [2020-09-04 13:59:35,389 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 13:59:35,389 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] [2020-09-04 13:59:35,389 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 13:59:35,390 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 13:59:35,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 13:59:35,390 INFO L82 PathProgramCache]: Analyzing trace with hash 1287553668, now seen corresponding path program 1 times [2020-09-04 13:59:35,391 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 13:59:35,391 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188485079] [2020-09-04 13:59:35,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 13:59:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:59:36,839 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 13:59:36,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 13:59:36,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 13:59:36,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 13:59:36,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188485079] [2020-09-04 13:59:36,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 13:59:36,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 13:59:36,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515665138] [2020-09-04 13:59:36,992 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 13:59:36,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 13:59:36,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 13:59:36,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 13:59:36,993 INFO L87 Difference]: Start difference. First operand 3797 states and 6464 transitions. Second operand 4 states. [2020-09-04 13:59:38,084 WARN L193 SmtUtils]: Spent 1.03 s on a formula simplification that was a NOOP. DAG size: 398 [2020-09-04 14:00:01,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:00:01,226 INFO L93 Difference]: Finished difference Result 6370 states and 10871 transitions. [2020-09-04 14:00:01,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:00:01,227 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 353 [2020-09-04 14:00:01,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:00:01,249 INFO L225 Difference]: With dead ends: 6370 [2020-09-04 14:00:01,249 INFO L226 Difference]: Without dead ends: 4697 [2020-09-04 14:00:01,254 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:00:01,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4697 states. [2020-09-04 14:00:01,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4697 to 4693. [2020-09-04 14:00:01,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4693 states. [2020-09-04 14:00:01,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4693 states to 4693 states and 7996 transitions. [2020-09-04 14:00:01,388 INFO L78 Accepts]: Start accepts. Automaton has 4693 states and 7996 transitions. Word has length 353 [2020-09-04 14:00:01,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:00:01,389 INFO L479 AbstractCegarLoop]: Abstraction has 4693 states and 7996 transitions. [2020-09-04 14:00:01,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:00:01,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4693 states and 7996 transitions. [2020-09-04 14:00:01,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-09-04 14:00:01,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:00:01,407 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] [2020-09-04 14:00:01,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 14:00:01,407 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:00:01,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:00:01,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1465097905, now seen corresponding path program 1 times [2020-09-04 14:00:01,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:00:01,409 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304802992] [2020-09-04 14:00:01,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:00:01,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:02,840 WARN L193 SmtUtils]: Spent 997.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:00:02,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:00:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:02,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:00:02,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304802992] [2020-09-04 14:00:02,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:00:02,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:00:02,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579479536] [2020-09-04 14:00:02,978 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:00:02,978 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:00:02,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:00:02,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:00:02,979 INFO L87 Difference]: Start difference. First operand 4693 states and 7996 transitions. Second operand 4 states. [2020-09-04 14:00:04,049 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 396 [2020-09-04 14:00:28,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:00:28,586 INFO L93 Difference]: Finished difference Result 12615 states and 21382 transitions. [2020-09-04 14:00:28,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:00:28,589 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 357 [2020-09-04 14:00:28,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:00:28,624 INFO L225 Difference]: With dead ends: 12615 [2020-09-04 14:00:28,624 INFO L226 Difference]: Without dead ends: 8527 [2020-09-04 14:00:28,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:00:28,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8527 states. [2020-09-04 14:00:28,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8527 to 8523. [2020-09-04 14:00:28,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8523 states. [2020-09-04 14:00:28,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8523 states to 8523 states and 14421 transitions. [2020-09-04 14:00:28,850 INFO L78 Accepts]: Start accepts. Automaton has 8523 states and 14421 transitions. Word has length 357 [2020-09-04 14:00:28,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:00:28,851 INFO L479 AbstractCegarLoop]: Abstraction has 8523 states and 14421 transitions. [2020-09-04 14:00:28,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:00:28,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8523 states and 14421 transitions. [2020-09-04 14:00:28,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2020-09-04 14:00:28,872 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:00:28,873 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] [2020-09-04 14:00:28,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 14:00:28,873 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:00:28,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:00:28,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1576454873, now seen corresponding path program 1 times [2020-09-04 14:00:28,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:00:28,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705045584] [2020-09-04 14:00:28,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:00:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:30,242 WARN L193 SmtUtils]: Spent 988.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:00:30,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:00:30,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:30,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:00:30,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705045584] [2020-09-04 14:00:30,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:00:30,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:00:30,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813909254] [2020-09-04 14:00:30,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:00:30,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:00:30,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:00:30,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:00:30,408 INFO L87 Difference]: Start difference. First operand 8523 states and 14421 transitions. Second operand 4 states. [2020-09-04 14:00:31,571 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 398 [2020-09-04 14:00:56,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:00:56,192 INFO L93 Difference]: Finished difference Result 15288 states and 25910 transitions. [2020-09-04 14:00:56,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:00:56,193 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 361 [2020-09-04 14:00:56,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:00:56,228 INFO L225 Difference]: With dead ends: 15288 [2020-09-04 14:00:56,228 INFO L226 Difference]: Without dead ends: 11190 [2020-09-04 14:00:56,237 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:00:56,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11190 states. [2020-09-04 14:00:56,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11190 to 11186. [2020-09-04 14:00:56,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11186 states. [2020-09-04 14:00:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11186 states to 11186 states and 18931 transitions. [2020-09-04 14:00:56,514 INFO L78 Accepts]: Start accepts. Automaton has 11186 states and 18931 transitions. Word has length 361 [2020-09-04 14:00:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:00:56,515 INFO L479 AbstractCegarLoop]: Abstraction has 11186 states and 18931 transitions. [2020-09-04 14:00:56,515 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:00:56,515 INFO L276 IsEmpty]: Start isEmpty. Operand 11186 states and 18931 transitions. [2020-09-04 14:00:56,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2020-09-04 14:00:56,541 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:00:56,541 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 14:00:56,542 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 14:00:56,542 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:00:56,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:00:56,542 INFO L82 PathProgramCache]: Analyzing trace with hash 451793818, now seen corresponding path program 1 times [2020-09-04 14:00:56,543 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:00:56,543 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407196794] [2020-09-04 14:00:56,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:00:56,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:57,816 WARN L193 SmtUtils]: Spent 917.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:00:57,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:00:57,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:00:57,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:00:57,965 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407196794] [2020-09-04 14:00:57,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:00:57,966 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:00:57,966 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139867495] [2020-09-04 14:00:57,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:00:57,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:00:57,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:00:57,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:00:57,968 INFO L87 Difference]: Start difference. First operand 11186 states and 18931 transitions. Second operand 4 states. [2020-09-04 14:00:59,068 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 396 [2020-09-04 14:01:25,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:25,681 INFO L93 Difference]: Finished difference Result 31564 states and 53193 transitions. [2020-09-04 14:01:25,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:01:25,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 365 [2020-09-04 14:01:25,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:25,723 INFO L225 Difference]: With dead ends: 31564 [2020-09-04 14:01:25,723 INFO L226 Difference]: Without dead ends: 21006 [2020-09-04 14:01:25,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:01:25,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21006 states. [2020-09-04 14:01:26,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21006 to 21002. [2020-09-04 14:01:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21002 states. [2020-09-04 14:01:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21002 states to 21002 states and 35288 transitions. [2020-09-04 14:01:26,215 INFO L78 Accepts]: Start accepts. Automaton has 21002 states and 35288 transitions. Word has length 365 [2020-09-04 14:01:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:26,216 INFO L479 AbstractCegarLoop]: Abstraction has 21002 states and 35288 transitions. [2020-09-04 14:01:26,216 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:01:26,217 INFO L276 IsEmpty]: Start isEmpty. Operand 21002 states and 35288 transitions. [2020-09-04 14:01:26,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 370 [2020-09-04 14:01:26,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:26,249 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] [2020-09-04 14:01:26,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 14:01:26,249 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:01:26,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:26,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1781087804, now seen corresponding path program 1 times [2020-09-04 14:01:26,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:26,250 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540833081] [2020-09-04 14:01:26,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:26,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:27,617 WARN L193 SmtUtils]: Spent 939.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:01:27,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:27,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:27,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:27,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540833081] [2020-09-04 14:01:27,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:27,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:01:27,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540291664] [2020-09-04 14:01:27,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:01:27,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:27,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:01:27,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:27,785 INFO L87 Difference]: Start difference. First operand 21002 states and 35288 transitions. Second operand 4 states. [2020-09-04 14:01:28,815 WARN L193 SmtUtils]: Spent 964.00 ms on a formula simplification that was a NOOP. DAG size: 398 [2020-09-04 14:01:52,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:01:52,956 INFO L93 Difference]: Finished difference Result 38803 states and 65367 transitions. [2020-09-04 14:01:52,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:01:52,961 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 369 [2020-09-04 14:01:52,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:01:53,010 INFO L225 Difference]: With dead ends: 38803 [2020-09-04 14:01:53,011 INFO L226 Difference]: Without dead ends: 28235 [2020-09-04 14:01:53,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:01:53,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28235 states. [2020-09-04 14:01:53,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28235 to 28231. [2020-09-04 14:01:53,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28231 states. [2020-09-04 14:01:53,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28231 states to 28231 states and 47446 transitions. [2020-09-04 14:01:53,646 INFO L78 Accepts]: Start accepts. Automaton has 28231 states and 47446 transitions. Word has length 369 [2020-09-04 14:01:53,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:01:53,646 INFO L479 AbstractCegarLoop]: Abstraction has 28231 states and 47446 transitions. [2020-09-04 14:01:53,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:01:53,646 INFO L276 IsEmpty]: Start isEmpty. Operand 28231 states and 47446 transitions. [2020-09-04 14:01:54,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-09-04 14:01:54,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:01:54,709 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] [2020-09-04 14:01:54,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 14:01:54,710 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:01:54,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:01:54,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1146566953, now seen corresponding path program 1 times [2020-09-04 14:01:54,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:01:54,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231408602] [2020-09-04 14:01:54,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:01:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:56,160 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:01:56,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:01:56,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:01:56,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:01:56,273 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231408602] [2020-09-04 14:01:56,273 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:01:56,273 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:01:56,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113237882] [2020-09-04 14:01:56,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:01:56,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:01:56,275 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:01:56,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:01:56,275 INFO L87 Difference]: Start difference. First operand 28231 states and 47446 transitions. Second operand 4 states. [2020-09-04 14:01:57,378 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 396 [2020-09-04 14:02:24,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:02:24,034 INFO L93 Difference]: Finished difference Result 81223 states and 135938 transitions. [2020-09-04 14:02:24,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:02:24,035 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 373 [2020-09-04 14:02:24,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:02:24,117 INFO L225 Difference]: With dead ends: 81223 [2020-09-04 14:02:24,117 INFO L226 Difference]: Without dead ends: 53643 [2020-09-04 14:02:24,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:02:24,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53643 states. [2020-09-04 14:02:25,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53643 to 53639. [2020-09-04 14:02:25,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53639 states. [2020-09-04 14:02:25,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53639 states to 53639 states and 89423 transitions. [2020-09-04 14:02:25,256 INFO L78 Accepts]: Start accepts. Automaton has 53639 states and 89423 transitions. Word has length 373 [2020-09-04 14:02:25,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:02:25,257 INFO L479 AbstractCegarLoop]: Abstraction has 53639 states and 89423 transitions. [2020-09-04 14:02:25,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:02:25,257 INFO L276 IsEmpty]: Start isEmpty. Operand 53639 states and 89423 transitions. [2020-09-04 14:02:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 378 [2020-09-04 14:02:25,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:02:25,552 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] [2020-09-04 14:02:25,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 14:02:25,553 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:02:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:02:25,553 INFO L82 PathProgramCache]: Analyzing trace with hash 2020671087, now seen corresponding path program 1 times [2020-09-04 14:02:25,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:02:25,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340070725] [2020-09-04 14:02:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:02:25,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:26,949 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:02:26,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:02:26,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:02:27,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:02:27,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340070725] [2020-09-04 14:02:27,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:02:27,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:02:27,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421738778] [2020-09-04 14:02:27,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:02:27,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:02:27,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:02:27,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:02:27,123 INFO L87 Difference]: Start difference. First operand 53639 states and 89423 transitions. Second operand 4 states. [2020-09-04 14:02:28,230 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification that was a NOOP. DAG size: 398 [2020-09-04 14:02:56,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:02:56,141 INFO L93 Difference]: Finished difference Result 100010 states and 167236 transitions. [2020-09-04 14:02:56,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:02:56,142 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 377 [2020-09-04 14:02:56,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:02:56,244 INFO L225 Difference]: With dead ends: 100010 [2020-09-04 14:02:56,244 INFO L226 Difference]: Without dead ends: 72420 [2020-09-04 14:02:56,288 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:02:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72420 states. [2020-09-04 14:02:57,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72420 to 72416. [2020-09-04 14:02:57,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72416 states. [2020-09-04 14:02:57,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72416 states to 72416 states and 120709 transitions. [2020-09-04 14:02:57,828 INFO L78 Accepts]: Start accepts. Automaton has 72416 states and 120709 transitions. Word has length 377 [2020-09-04 14:02:57,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:02:57,829 INFO L479 AbstractCegarLoop]: Abstraction has 72416 states and 120709 transitions. [2020-09-04 14:02:57,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:02:57,829 INFO L276 IsEmpty]: Start isEmpty. Operand 72416 states and 120709 transitions. [2020-09-04 14:02:57,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 382 [2020-09-04 14:02:57,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:02:57,890 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] [2020-09-04 14:02:57,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 14:02:57,891 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:02:57,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:02:57,891 INFO L82 PathProgramCache]: Analyzing trace with hash -315546078, now seen corresponding path program 1 times [2020-09-04 14:02:57,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:02:57,892 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025374269] [2020-09-04 14:02:57,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:02:58,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:01,094 WARN L193 SmtUtils]: Spent 2.82 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:03:01,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:03:01,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:01,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:03:01,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025374269] [2020-09-04 14:03:01,242 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:03:01,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:03:01,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626078687] [2020-09-04 14:03:01,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:03:01,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:03:01,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:03:01,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:03:01,244 INFO L87 Difference]: Start difference. First operand 72416 states and 120709 transitions. Second operand 4 states. [2020-09-04 14:03:02,347 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 396 [2020-09-04 14:03:33,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:03:33,032 INFO L93 Difference]: Finished difference Result 209486 states and 347551 transitions. [2020-09-04 14:03:33,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:03:33,033 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 381 [2020-09-04 14:03:33,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:03:33,180 INFO L225 Difference]: With dead ends: 209486 [2020-09-04 14:03:33,180 INFO L226 Difference]: Without dead ends: 137744 [2020-09-04 14:03:33,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:03:33,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137744 states. [2020-09-04 14:03:38,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137744 to 137740. [2020-09-04 14:03:38,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137740 states. [2020-09-04 14:03:39,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137740 states to 137740 states and 227422 transitions. [2020-09-04 14:03:39,074 INFO L78 Accepts]: Start accepts. Automaton has 137740 states and 227422 transitions. Word has length 381 [2020-09-04 14:03:39,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:03:39,075 INFO L479 AbstractCegarLoop]: Abstraction has 137740 states and 227422 transitions. [2020-09-04 14:03:39,075 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:03:39,075 INFO L276 IsEmpty]: Start isEmpty. Operand 137740 states and 227422 transitions. [2020-09-04 14:03:39,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 386 [2020-09-04 14:03:39,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:03:39,204 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] [2020-09-04 14:03:39,204 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 14:03:39,205 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:03:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:03:39,205 INFO L82 PathProgramCache]: Analyzing trace with hash -430938636, now seen corresponding path program 1 times [2020-09-04 14:03:39,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:03:39,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312770455] [2020-09-04 14:03:39,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:03:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:40,583 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:03:40,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:03:40,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:03:40,709 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:03:40,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312770455] [2020-09-04 14:03:40,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:03:40,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 14:03:40,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791801317] [2020-09-04 14:03:40,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 14:03:40,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:03:40,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 14:03:40,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 14:03:40,712 INFO L87 Difference]: Start difference. First operand 137740 states and 227422 transitions. Second operand 4 states. [2020-09-04 14:03:41,859 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 398 [2020-09-04 14:04:11,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:04:11,219 INFO L93 Difference]: Finished difference Result 256489 states and 424821 transitions. [2020-09-04 14:04:11,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 14:04:11,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 385 [2020-09-04 14:04:11,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:04:11,425 INFO L225 Difference]: With dead ends: 256489 [2020-09-04 14:04:11,425 INFO L226 Difference]: Without dead ends: 184737 [2020-09-04 14:04:11,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:04:11,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184737 states. [2020-09-04 14:04:19,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184737 to 184733. [2020-09-04 14:04:19,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184733 states. [2020-09-04 14:04:20,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184733 states to 184733 states and 304688 transitions. [2020-09-04 14:04:20,222 INFO L78 Accepts]: Start accepts. Automaton has 184733 states and 304688 transitions. Word has length 385 [2020-09-04 14:04:20,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:04:20,222 INFO L479 AbstractCegarLoop]: Abstraction has 184733 states and 304688 transitions. [2020-09-04 14:04:20,222 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 14:04:20,222 INFO L276 IsEmpty]: Start isEmpty. Operand 184733 states and 304688 transitions. [2020-09-04 14:04:21,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 390 [2020-09-04 14:04:21,036 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:04:21,036 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 14:04:21,036 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 14:04:21,036 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:04:21,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:04:21,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1967099999, now seen corresponding path program 1 times [2020-09-04 14:04:21,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:04:21,037 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078156937] [2020-09-04 14:04:21,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:04:21,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:22,536 WARN L193 SmtUtils]: Spent 998.00 ms on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:04:22,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:04:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:04:22,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:04:22,688 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078156937] [2020-09-04 14:04:22,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:04:22,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 14:04:22,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663882233] [2020-09-04 14:04:22,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 14:04:22,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:04:22,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 14:04:22,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-04 14:04:22,691 INFO L87 Difference]: Start difference. First operand 184733 states and 304688 transitions. Second operand 8 states. [2020-09-04 14:04:23,882 WARN L193 SmtUtils]: Spent 1.10 s on a formula simplification that was a NOOP. DAG size: 402 [2020-09-04 14:05:44,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:05:44,586 INFO L93 Difference]: Finished difference Result 964911 states and 1597427 transitions. [2020-09-04 14:05:44,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 14:05:44,587 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 389 [2020-09-04 14:05:44,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:05:45,708 INFO L225 Difference]: With dead ends: 964911 [2020-09-04 14:05:45,708 INFO L226 Difference]: Without dead ends: 780855 [2020-09-04 14:05:45,911 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2020-09-04 14:05:46,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780855 states. [2020-09-04 14:06:19,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780855 to 482150. [2020-09-04 14:06:19,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 482150 states. [2020-09-04 14:06:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 482150 states to 482150 states and 793738 transitions. [2020-09-04 14:06:20,969 INFO L78 Accepts]: Start accepts. Automaton has 482150 states and 793738 transitions. Word has length 389 [2020-09-04 14:06:20,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:06:20,969 INFO L479 AbstractCegarLoop]: Abstraction has 482150 states and 793738 transitions. [2020-09-04 14:06:20,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 14:06:20,969 INFO L276 IsEmpty]: Start isEmpty. Operand 482150 states and 793738 transitions. [2020-09-04 14:06:21,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 392 [2020-09-04 14:06:21,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:06:21,359 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] [2020-09-04 14:06:21,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 14:06:21,359 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:06:21,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:06:21,359 INFO L82 PathProgramCache]: Analyzing trace with hash -2060344893, now seen corresponding path program 1 times [2020-09-04 14:06:21,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:06:21,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228904916] [2020-09-04 14:06:21,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:06:21,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:06:22,948 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:06:22,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:06:22,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:06:23,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:06:23,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228904916] [2020-09-04 14:06:23,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:06:23,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:06:23,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046992009] [2020-09-04 14:06:23,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:06:23,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:06:23,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:06:23,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:06:23,077 INFO L87 Difference]: Start difference. First operand 482150 states and 793738 transitions. Second operand 5 states. [2020-09-04 14:06:24,228 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 398 [2020-09-04 14:07:38,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 14:07:38,826 INFO L93 Difference]: Finished difference Result 1394270 states and 2304340 transitions. [2020-09-04 14:07:38,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 14:07:38,827 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 391 [2020-09-04 14:07:38,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 14:07:41,085 INFO L225 Difference]: With dead ends: 1394270 [2020-09-04 14:07:41,085 INFO L226 Difference]: Without dead ends: 912797 [2020-09-04 14:07:41,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-04 14:07:42,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912797 states. [2020-09-04 14:08:38,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912797 to 795622. [2020-09-04 14:08:38,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 795622 states. [2020-09-04 14:08:41,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 795622 states to 795622 states and 1310868 transitions. [2020-09-04 14:08:41,843 INFO L78 Accepts]: Start accepts. Automaton has 795622 states and 1310868 transitions. Word has length 391 [2020-09-04 14:08:41,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 14:08:41,844 INFO L479 AbstractCegarLoop]: Abstraction has 795622 states and 1310868 transitions. [2020-09-04 14:08:41,844 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 14:08:41,844 INFO L276 IsEmpty]: Start isEmpty. Operand 795622 states and 1310868 transitions. [2020-09-04 14:08:42,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-09-04 14:08:42,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 14:08:42,493 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] [2020-09-04 14:08:42,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 14:08:42,493 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 14:08:42,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 14:08:42,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1604484090, now seen corresponding path program 1 times [2020-09-04 14:08:42,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-09-04 14:08:42,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547728284] [2020-09-04 14:08:42,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 14:08:43,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:08:44,839 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification that was a NOOP. DAG size: 394 [2020-09-04 14:08:44,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 14:08:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 14:08:45,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 14:08:45,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547728284] [2020-09-04 14:08:45,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 14:08:45,064 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 14:08:45,064 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101993919] [2020-09-04 14:08:45,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 14:08:45,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-09-04 14:08:45,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 14:08:45,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 14:08:45,067 INFO L87 Difference]: Start difference. First operand 795622 states and 1310868 transitions. Second operand 5 states. [2020-09-04 14:08:46,279 WARN L193 SmtUtils]: Spent 1.09 s on a formula simplification that was a NOOP. DAG size: 398