/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/eca-rers2012/Problem04_label33.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-06 19:02:52,712 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-06 19:02:52,714 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-06 19:02:52,731 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-06 19:02:52,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-06 19:02:52,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-06 19:02:52,736 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-06 19:02:52,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-06 19:02:52,750 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-06 19:02:52,751 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-06 19:02:52,754 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-06 19:02:52,756 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-06 19:02:52,757 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-06 19:02:52,760 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-06 19:02:52,761 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-06 19:02:52,763 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-06 19:02:52,765 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-06 19:02:52,768 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-06 19:02:52,769 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-06 19:02:52,775 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-06 19:02:52,777 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-06 19:02:52,778 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-06 19:02:52,781 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-06 19:02:52,782 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-06 19:02:52,784 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-06 19:02:52,784 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-06 19:02:52,784 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-06 19:02:52,785 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-06 19:02:52,786 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-06 19:02:52,787 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-06 19:02:52,787 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-06 19:02:52,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-06 19:02:52,788 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-06 19:02:52,789 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-06 19:02:52,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-06 19:02:52,790 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-06 19:02:52,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-06 19:02:52,791 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-06 19:02:52,791 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-06 19:02:52,792 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-06 19:02:52,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-06 19:02:52,794 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-06 19:02:52,808 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-06 19:02:52,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-06 19:02:52,809 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-06 19:02:52,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-06 19:02:52,810 INFO L138 SettingsManager]: * Use SBE=true [2019-11-06 19:02:52,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-06 19:02:52,810 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-06 19:02:52,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-06 19:02:52,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-06 19:02:52,811 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-06 19:02:52,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-06 19:02:52,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-06 19:02:52,811 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-06 19:02:52,811 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-06 19:02:52,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-06 19:02:52,812 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-06 19:02:52,812 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-06 19:02:52,812 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-06 19:02:52,812 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-06 19:02:52,813 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-06 19:02:52,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-06 19:02:52,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:02:52,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-06 19:02:52,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-06 19:02:52,814 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-06 19:02:52,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-06 19:02:52,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-06 19:02:52,814 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-06 19:02:52,814 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-06 19:02:53,089 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-06 19:02:53,103 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-06 19:02:53,108 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-06 19:02:53,109 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-06 19:02:53,110 INFO L275 PluginConnector]: CDTParser initialized [2019-11-06 19:02:53,111 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label33.c [2019-11-06 19:02:53,188 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de65665f2/cdf97da3d3ba43ffa77761c789b53887/FLAG4d9cf5b1e [2019-11-06 19:02:53,982 INFO L306 CDTParser]: Found 1 translation units. [2019-11-06 19:02:53,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem04_label33.c [2019-11-06 19:02:54,016 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de65665f2/cdf97da3d3ba43ffa77761c789b53887/FLAG4d9cf5b1e [2019-11-06 19:02:54,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de65665f2/cdf97da3d3ba43ffa77761c789b53887 [2019-11-06 19:02:54,534 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-06 19:02:54,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-06 19:02:54,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-06 19:02:54,537 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-06 19:02:54,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-06 19:02:54,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:54" (1/1) ... [2019-11-06 19:02:54,544 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@630fa84f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:54, skipping insertion in model container [2019-11-06 19:02:54,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 07:02:54" (1/1) ... [2019-11-06 19:02:54,553 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-06 19:02:54,712 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-06 19:02:56,164 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:02:56,176 INFO L188 MainTranslator]: Completed pre-run [2019-11-06 19:02:56,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-06 19:02:56,859 INFO L192 MainTranslator]: Completed translation [2019-11-06 19:02:56,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56 WrapperNode [2019-11-06 19:02:56,860 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-06 19:02:56,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-06 19:02:56,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-06 19:02:56,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-06 19:02:56,876 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:56,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:56,929 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:56,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:57,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:57,078 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:57,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... [2019-11-06 19:02:57,125 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-06 19:02:57,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-06 19:02:57,126 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-06 19:02:57,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-06 19:02:57,127 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-06 19:02:57,198 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-06 19:02:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-06 19:02:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2019-11-06 19:02:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2019-11-06 19:02:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2019-11-06 19:02:57,199 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2019-11-06 19:02:57,200 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-06 19:02:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2019-11-06 19:02:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2019-11-06 19:02:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2019-11-06 19:02:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2019-11-06 19:02:57,200 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-06 19:02:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-06 19:02:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-06 19:02:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-06 19:02:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-06 19:02:57,201 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-06 19:03:01,663 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-06 19:03:01,664 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-11-06 19:03:01,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:01 BoogieIcfgContainer [2019-11-06 19:03:01,669 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-06 19:03:01,671 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-06 19:03:01,671 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-06 19:03:01,675 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-06 19:03:01,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 07:02:54" (1/3) ... [2019-11-06 19:03:01,676 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ce61c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:01, skipping insertion in model container [2019-11-06 19:03:01,676 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 07:02:56" (2/3) ... [2019-11-06 19:03:01,677 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30ce61c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 07:03:01, skipping insertion in model container [2019-11-06 19:03:01,678 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 07:03:01" (3/3) ... [2019-11-06 19:03:01,689 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem04_label33.c [2019-11-06 19:03:01,701 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-06 19:03:01,712 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-06 19:03:01,726 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-06 19:03:01,772 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-06 19:03:01,772 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-06 19:03:01,773 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-06 19:03:01,773 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-06 19:03:01,773 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-06 19:03:01,773 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-06 19:03:01,773 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-06 19:03:01,773 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-06 19:03:01,817 INFO L276 IsEmpty]: Start isEmpty. Operand 906 states. [2019-11-06 19:03:01,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 825 [2019-11-06 19:03:01,876 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:01,879 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:01,881 INFO L410 AbstractCegarLoop]: === Iteration 1 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:01,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:01,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1119883053, now seen corresponding path program 1 times [2019-11-06 19:03:01,896 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:01,897 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909400597] [2019-11-06 19:03:01,898 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:02,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:03,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:03:04,150 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909400597] [2019-11-06 19:03:04,151 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:04,151 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-11-06 19:03:04,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716894358] [2019-11-06 19:03:04,162 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:03:04,163 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:04,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:03:04,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2019-11-06 19:03:04,181 INFO L87 Difference]: Start difference. First operand 906 states. Second operand 5 states. [2019-11-06 19:03:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:16,624 INFO L93 Difference]: Finished difference Result 3521 states and 6827 transitions. [2019-11-06 19:03:16,626 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:03:16,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 824 [2019-11-06 19:03:16,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:16,673 INFO L225 Difference]: With dead ends: 3521 [2019-11-06 19:03:16,674 INFO L226 Difference]: Without dead ends: 2547 [2019-11-06 19:03:16,684 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 5 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2019-11-06 19:03:16,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2547 states. [2019-11-06 19:03:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2547 to 2534. [2019-11-06 19:03:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2534 states. [2019-11-06 19:03:16,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2534 states to 2534 states and 4128 transitions. [2019-11-06 19:03:16,905 INFO L78 Accepts]: Start accepts. Automaton has 2534 states and 4128 transitions. Word has length 824 [2019-11-06 19:03:16,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:16,910 INFO L462 AbstractCegarLoop]: Abstraction has 2534 states and 4128 transitions. [2019-11-06 19:03:16,910 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:03:16,910 INFO L276 IsEmpty]: Start isEmpty. Operand 2534 states and 4128 transitions. [2019-11-06 19:03:16,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 898 [2019-11-06 19:03:16,948 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:16,949 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:16,949 INFO L410 AbstractCegarLoop]: === Iteration 2 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:16,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:16,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1617217111, now seen corresponding path program 1 times [2019-11-06 19:03:16,950 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:16,950 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062095212] [2019-11-06 19:03:16,950 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:17,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:17,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:17,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:17,849 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 67 proven. 10 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-06 19:03:17,850 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062095212] [2019-11-06 19:03:17,851 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744111346] [2019-11-06 19:03:17,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:03:18,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:18,220 INFO L256 TraceCheckSpWp]: Trace formula consists of 1284 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-06 19:03:18,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-06 19:03:18,762 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2019-11-06 19:03:18,762 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-06 19:03:18,763 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2019-11-06 19:03:18,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025885918] [2019-11-06 19:03:18,766 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-06 19:03:18,766 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:18,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-06 19:03:18,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2019-11-06 19:03:18,767 INFO L87 Difference]: Start difference. First operand 2534 states and 4128 transitions. Second operand 5 states. [2019-11-06 19:03:25,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-06 19:03:25,025 INFO L93 Difference]: Finished difference Result 7687 states and 12697 transitions. [2019-11-06 19:03:25,030 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-06 19:03:25,030 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 897 [2019-11-06 19:03:25,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-06 19:03:25,061 INFO L225 Difference]: With dead ends: 7687 [2019-11-06 19:03:25,061 INFO L226 Difference]: Without dead ends: 5159 [2019-11-06 19:03:25,069 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 910 GetRequests, 896 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2019-11-06 19:03:25,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5159 states. [2019-11-06 19:03:25,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5159 to 5111. [2019-11-06 19:03:25,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5111 states. [2019-11-06 19:03:25,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 8272 transitions. [2019-11-06 19:03:25,271 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 8272 transitions. Word has length 897 [2019-11-06 19:03:25,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-06 19:03:25,272 INFO L462 AbstractCegarLoop]: Abstraction has 5111 states and 8272 transitions. [2019-11-06 19:03:25,273 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-06 19:03:25,274 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 8272 transitions. [2019-11-06 19:03:25,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 903 [2019-11-06 19:03:25,301 INFO L402 BasicCegarLoop]: Found error trace [2019-11-06 19:03:25,302 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-06 19:03:25,541 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-06 19:03:25,542 INFO L410 AbstractCegarLoop]: === Iteration 3 === [calculate_output4Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-06 19:03:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-06 19:03:25,543 INFO L82 PathProgramCache]: Analyzing trace with hash -2101200554, now seen corresponding path program 1 times [2019-11-06 19:03:25,543 INFO L161 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-06 19:03:25,543 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738539211] [2019-11-06 19:03:25,543 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-06 19:03:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:25,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:26,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-06 19:03:26,685 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-06 19:03:26,686 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738539211] [2019-11-06 19:03:26,686 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-06 19:03:26,686 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-11-06 19:03:26,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888517298] [2019-11-06 19:03:26,689 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-11-06 19:03:26,689 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-06 19:03:26,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-11-06 19:03:26,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2019-11-06 19:03:26,691 INFO L87 Difference]: Start difference. First operand 5111 states and 8272 transitions. Second operand 9 states.