java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:45:23,009 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:45:23,011 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:45:23,033 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:45:23,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:45:23,035 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:45:23,037 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:45:23,047 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:45:23,049 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:45:23,050 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:45:23,051 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:45:23,052 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:45:23,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:45:23,055 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:45:23,056 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:45:23,057 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:45:23,058 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:45:23,061 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:45:23,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:45:23,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:45:23,072 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:45:23,075 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:45:23,076 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:45:23,077 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:45:23,080 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:45:23,080 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:45:23,080 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:45:23,082 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:45:23,083 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:45:23,084 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:45:23,084 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:45:23,085 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:45:23,086 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:45:23,086 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:45:23,088 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:45:23,088 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:45:23,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:45:23,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:45:23,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:45:23,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:45:23,093 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:45:23,094 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 [2019-10-14 23:45:23,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:45:23,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:45:23,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:45:23,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:45:23,124 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:45:23,129 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:45:23,131 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:45:23,131 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:45:23,132 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:45:23,132 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:45:23,132 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:45:23,132 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:45:23,132 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:45:23,133 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:45:23,133 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:45:23,133 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:45:23,133 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:45:23,133 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:45:23,134 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:45:23,134 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:45:23,134 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:45:23,136 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:45:23,137 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:45:23,137 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:45:23,137 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:45:23,137 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:45:23,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:45:23,138 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:45:23,138 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:45:23,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:45:23,416 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:45:23,419 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:45:23,421 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:45:23,421 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:45:23,422 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-14 23:45:23,486 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fae12936/0d5335d05f834e6fa2e46d7134f3b3c6/FLAG0cf81fa00 [2019-10-14 23:45:24,065 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:45:24,065 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-14 23:45:24,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fae12936/0d5335d05f834e6fa2e46d7134f3b3c6/FLAG0cf81fa00 [2019-10-14 23:45:24,374 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2fae12936/0d5335d05f834e6fa2e46d7134f3b3c6 [2019-10-14 23:45:24,384 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:45:24,386 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:45:24,387 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:45:24,387 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:45:24,391 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:45:24,392 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:24" (1/1) ... [2019-10-14 23:45:24,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b9f1ca3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:24, skipping insertion in model container [2019-10-14 23:45:24,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:45:24" (1/1) ... [2019-10-14 23:45:24,402 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:45:24,487 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:45:25,159 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:45:25,182 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:45:25,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:45:25,720 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:45:25,721 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25 WrapperNode [2019-10-14 23:45:25,721 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:45:25,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:45:25,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:45:25,723 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:45:25,744 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,744 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,786 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,787 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,844 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (1/1) ... [2019-10-14 23:45:25,891 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:45:25,892 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:45:25,892 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:45:25,893 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:45:25,893 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (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 [2019-10-14 23:45:25,959 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:45:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:45:25,961 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-14 23:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-14 23:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-14 23:45:25,962 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-14 23:45:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-14 23:45:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-14 23:45:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-14 23:45:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-14 23:45:25,963 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-14 23:45:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-14 23:45:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-14 23:45:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-14 23:45:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:45:25,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:45:25,965 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:45:27,657 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:45:27,657 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-14 23:45:27,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:27 BoogieIcfgContainer [2019-10-14 23:45:27,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:45:27,661 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:45:27,661 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:45:27,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:45:27,664 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:45:24" (1/3) ... [2019-10-14 23:45:27,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2f90a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:27, skipping insertion in model container [2019-10-14 23:45:27,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:45:25" (2/3) ... [2019-10-14 23:45:27,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a2f90a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:45:27, skipping insertion in model container [2019-10-14 23:45:27,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:45:27" (3/3) ... [2019-10-14 23:45:27,668 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.4.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2019-10-14 23:45:27,678 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:45:27,687 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 5 error locations. [2019-10-14 23:45:27,698 INFO L249 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2019-10-14 23:45:27,730 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:45:27,730 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:45:27,730 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:45:27,730 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:45:27,730 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:45:27,731 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:45:27,731 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:45:27,731 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:45:27,761 INFO L276 IsEmpty]: Start isEmpty. Operand 416 states. [2019-10-14 23:45:27,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:45:27,780 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:27,781 INFO L380 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] [2019-10-14 23:45:27,784 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:27,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:27,790 INFO L82 PathProgramCache]: Analyzing trace with hash 257827157, now seen corresponding path program 1 times [2019-10-14 23:45:27,799 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:27,800 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879146592] [2019-10-14 23:45:27,800 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:27,825 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:27,825 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:28,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:28,816 WARN L191 SmtUtils]: Spent 336.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:28,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:28,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:28,905 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879146592] [2019-10-14 23:45:28,906 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:28,906 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:28,906 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288907304] [2019-10-14 23:45:28,911 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:28,912 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:28,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:28,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:28,929 INFO L87 Difference]: Start difference. First operand 416 states. Second operand 4 states. [2019-10-14 23:45:29,327 WARN L191 SmtUtils]: Spent 339.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-14 23:45:32,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:32,257 INFO L93 Difference]: Finished difference Result 759 states and 1331 transitions. [2019-10-14 23:45:32,257 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:32,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-14 23:45:32,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:32,280 INFO L225 Difference]: With dead ends: 759 [2019-10-14 23:45:32,280 INFO L226 Difference]: Without dead ends: 590 [2019-10-14 23:45:32,285 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:32,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2019-10-14 23:45:32,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 588. [2019-10-14 23:45:32,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 588 states. [2019-10-14 23:45:32,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 857 transitions. [2019-10-14 23:45:32,424 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 857 transitions. Word has length 151 [2019-10-14 23:45:32,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:32,425 INFO L462 AbstractCegarLoop]: Abstraction has 588 states and 857 transitions. [2019-10-14 23:45:32,425 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:32,425 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 857 transitions. [2019-10-14 23:45:32,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:45:32,430 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:32,430 INFO L380 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] [2019-10-14 23:45:32,431 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:32,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:32,431 INFO L82 PathProgramCache]: Analyzing trace with hash 1201169525, now seen corresponding path program 1 times [2019-10-14 23:45:32,432 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:32,432 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320929068] [2019-10-14 23:45:32,432 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:32,432 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:32,433 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:32,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:32,827 WARN L191 SmtUtils]: Spent 235.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:32,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:32,876 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320929068] [2019-10-14 23:45:32,876 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:32,876 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:32,876 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490073064] [2019-10-14 23:45:32,878 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:32,879 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:32,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:32,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:32,879 INFO L87 Difference]: Start difference. First operand 588 states and 857 transitions. Second operand 4 states. [2019-10-14 23:45:33,228 WARN L191 SmtUtils]: Spent 312.00 ms on a formula simplification that was a NOOP. DAG size: 197 [2019-10-14 23:45:35,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:35,358 INFO L93 Difference]: Finished difference Result 1187 states and 1790 transitions. [2019-10-14 23:45:35,359 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:35,359 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-14 23:45:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:35,366 INFO L225 Difference]: With dead ends: 1187 [2019-10-14 23:45:35,366 INFO L226 Difference]: Without dead ends: 964 [2019-10-14 23:45:35,373 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:35,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 964 states. [2019-10-14 23:45:35,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 964 to 962. [2019-10-14 23:45:35,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 962 states. [2019-10-14 23:45:35,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 962 states to 962 states and 1427 transitions. [2019-10-14 23:45:35,433 INFO L78 Accepts]: Start accepts. Automaton has 962 states and 1427 transitions. Word has length 151 [2019-10-14 23:45:35,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:35,434 INFO L462 AbstractCegarLoop]: Abstraction has 962 states and 1427 transitions. [2019-10-14 23:45:35,434 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:35,434 INFO L276 IsEmpty]: Start isEmpty. Operand 962 states and 1427 transitions. [2019-10-14 23:45:35,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-14 23:45:35,438 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:35,438 INFO L380 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] [2019-10-14 23:45:35,438 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:35,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:35,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1200830901, now seen corresponding path program 1 times [2019-10-14 23:45:35,439 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:35,440 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700826848] [2019-10-14 23:45:35,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:35,440 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:35,440 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:35,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:36,153 WARN L191 SmtUtils]: Spent 379.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:36,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:36,288 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700826848] [2019-10-14 23:45:36,288 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:36,288 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:36,288 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913646889] [2019-10-14 23:45:36,289 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:36,289 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:36,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:36,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:36,290 INFO L87 Difference]: Start difference. First operand 962 states and 1427 transitions. Second operand 5 states. [2019-10-14 23:45:39,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:39,360 INFO L93 Difference]: Finished difference Result 2828 states and 4188 transitions. [2019-10-14 23:45:39,361 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:39,362 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 151 [2019-10-14 23:45:39,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:39,372 INFO L225 Difference]: With dead ends: 2828 [2019-10-14 23:45:39,372 INFO L226 Difference]: Without dead ends: 1879 [2019-10-14 23:45:39,375 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:45:39,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2019-10-14 23:45:39,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1837. [2019-10-14 23:45:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1837 states. [2019-10-14 23:45:39,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1837 states to 1837 states and 2717 transitions. [2019-10-14 23:45:39,452 INFO L78 Accepts]: Start accepts. Automaton has 1837 states and 2717 transitions. Word has length 151 [2019-10-14 23:45:39,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:39,452 INFO L462 AbstractCegarLoop]: Abstraction has 1837 states and 2717 transitions. [2019-10-14 23:45:39,452 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:39,452 INFO L276 IsEmpty]: Start isEmpty. Operand 1837 states and 2717 transitions. [2019-10-14 23:45:39,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-14 23:45:39,456 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:39,457 INFO L380 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] [2019-10-14 23:45:39,457 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:39,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:39,458 INFO L82 PathProgramCache]: Analyzing trace with hash -958267271, now seen corresponding path program 1 times [2019-10-14 23:45:39,458 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:39,458 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038845164] [2019-10-14 23:45:39,458 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:39,459 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:39,459 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:39,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:39,898 WARN L191 SmtUtils]: Spent 376.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:39,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:39,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:39,937 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038845164] [2019-10-14 23:45:39,937 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:39,937 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:39,938 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641441980] [2019-10-14 23:45:39,939 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:39,939 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:39,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:39,939 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:39,940 INFO L87 Difference]: Start difference. First operand 1837 states and 2717 transitions. Second operand 4 states. [2019-10-14 23:45:43,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:43,596 INFO L93 Difference]: Finished difference Result 5465 states and 8081 transitions. [2019-10-14 23:45:43,597 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:43,597 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-14 23:45:43,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:43,619 INFO L225 Difference]: With dead ends: 5465 [2019-10-14 23:45:43,620 INFO L226 Difference]: Without dead ends: 3660 [2019-10-14 23:45:43,627 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3660 states. [2019-10-14 23:45:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3660 to 1839. [2019-10-14 23:45:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1839 states. [2019-10-14 23:45:43,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1839 states to 1839 states and 2719 transitions. [2019-10-14 23:45:43,750 INFO L78 Accepts]: Start accepts. Automaton has 1839 states and 2719 transitions. Word has length 152 [2019-10-14 23:45:43,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:43,750 INFO L462 AbstractCegarLoop]: Abstraction has 1839 states and 2719 transitions. [2019-10-14 23:45:43,752 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:43,752 INFO L276 IsEmpty]: Start isEmpty. Operand 1839 states and 2719 transitions. [2019-10-14 23:45:43,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-14 23:45:43,755 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:43,756 INFO L380 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] [2019-10-14 23:45:43,756 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:43,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:43,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1744211523, now seen corresponding path program 1 times [2019-10-14 23:45:43,757 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:43,757 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107583533] [2019-10-14 23:45:43,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:43,758 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:43,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:44,221 WARN L191 SmtUtils]: Spent 329.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:44,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:44,276 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107583533] [2019-10-14 23:45:44,276 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:44,276 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:44,276 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496924309] [2019-10-14 23:45:44,277 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:44,277 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:44,278 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:44,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:44,278 INFO L87 Difference]: Start difference. First operand 1839 states and 2719 transitions. Second operand 4 states. [2019-10-14 23:45:47,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:47,373 INFO L93 Difference]: Finished difference Result 5196 states and 7684 transitions. [2019-10-14 23:45:47,373 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:47,373 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 153 [2019-10-14 23:45:47,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:47,390 INFO L225 Difference]: With dead ends: 5196 [2019-10-14 23:45:47,391 INFO L226 Difference]: Without dead ends: 3554 [2019-10-14 23:45:47,396 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:47,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3554 states. [2019-10-14 23:45:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3554 to 3512. [2019-10-14 23:45:47,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3512 states. [2019-10-14 23:45:47,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3512 states to 3512 states and 5152 transitions. [2019-10-14 23:45:47,540 INFO L78 Accepts]: Start accepts. Automaton has 3512 states and 5152 transitions. Word has length 153 [2019-10-14 23:45:47,540 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:47,540 INFO L462 AbstractCegarLoop]: Abstraction has 3512 states and 5152 transitions. [2019-10-14 23:45:47,541 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:47,541 INFO L276 IsEmpty]: Start isEmpty. Operand 3512 states and 5152 transitions. [2019-10-14 23:45:47,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2019-10-14 23:45:47,547 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:47,547 INFO L380 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] [2019-10-14 23:45:47,547 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:47,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:47,548 INFO L82 PathProgramCache]: Analyzing trace with hash 294713414, now seen corresponding path program 1 times [2019-10-14 23:45:47,549 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:47,549 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095558541] [2019-10-14 23:45:47,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:47,549 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:47,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:47,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:47,935 WARN L191 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:47,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:47,978 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095558541] [2019-10-14 23:45:47,978 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:47,978 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:45:47,979 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095155199] [2019-10-14 23:45:47,979 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:45:47,980 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:47,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:45:47,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:45:47,980 INFO L87 Difference]: Start difference. First operand 3512 states and 5152 transitions. Second operand 5 states. [2019-10-14 23:45:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:49,717 INFO L93 Difference]: Finished difference Result 6017 states and 8836 transitions. [2019-10-14 23:45:49,718 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:45:49,719 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2019-10-14 23:45:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:49,730 INFO L225 Difference]: With dead ends: 6017 [2019-10-14 23:45:49,731 INFO L226 Difference]: Without dead ends: 2690 [2019-10-14 23:45:49,738 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:45:49,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2690 states. [2019-10-14 23:45:49,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2690 to 2690. [2019-10-14 23:45:49,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2690 states. [2019-10-14 23:45:49,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2690 states to 2690 states and 3933 transitions. [2019-10-14 23:45:49,844 INFO L78 Accepts]: Start accepts. Automaton has 2690 states and 3933 transitions. Word has length 153 [2019-10-14 23:45:49,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:49,844 INFO L462 AbstractCegarLoop]: Abstraction has 2690 states and 3933 transitions. [2019-10-14 23:45:49,844 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:45:49,844 INFO L276 IsEmpty]: Start isEmpty. Operand 2690 states and 3933 transitions. [2019-10-14 23:45:49,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2019-10-14 23:45:49,849 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:49,849 INFO L380 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] [2019-10-14 23:45:49,849 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:49,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:49,850 INFO L82 PathProgramCache]: Analyzing trace with hash -2083946363, now seen corresponding path program 1 times [2019-10-14 23:45:49,850 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:49,850 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587657222] [2019-10-14 23:45:49,850 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:49,851 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:49,851 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:49,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:50,165 WARN L191 SmtUtils]: Spent 239.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:50,235 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587657222] [2019-10-14 23:45:50,235 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:50,235 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:45:50,236 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763264935] [2019-10-14 23:45:50,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:45:50,237 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:50,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:45:50,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:50,237 INFO L87 Difference]: Start difference. First operand 2690 states and 3933 transitions. Second operand 4 states. [2019-10-14 23:45:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:45:52,223 INFO L93 Difference]: Finished difference Result 6148 states and 9216 transitions. [2019-10-14 23:45:52,223 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:45:52,224 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2019-10-14 23:45:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:45:52,239 INFO L225 Difference]: With dead ends: 6148 [2019-10-14 23:45:52,239 INFO L226 Difference]: Without dead ends: 3644 [2019-10-14 23:45:52,245 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:45:52,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3644 states. [2019-10-14 23:45:52,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3644 to 3558. [2019-10-14 23:45:52,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3558 states. [2019-10-14 23:45:52,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3558 states to 3558 states and 5350 transitions. [2019-10-14 23:45:52,385 INFO L78 Accepts]: Start accepts. Automaton has 3558 states and 5350 transitions. Word has length 154 [2019-10-14 23:45:52,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:45:52,385 INFO L462 AbstractCegarLoop]: Abstraction has 3558 states and 5350 transitions. [2019-10-14 23:45:52,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:45:52,385 INFO L276 IsEmpty]: Start isEmpty. Operand 3558 states and 5350 transitions. [2019-10-14 23:45:52,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2019-10-14 23:45:52,390 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:45:52,390 INFO L380 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] [2019-10-14 23:45:52,391 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:45:52,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:45:52,391 INFO L82 PathProgramCache]: Analyzing trace with hash -564593784, now seen corresponding path program 1 times [2019-10-14 23:45:52,392 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:45:52,392 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92301180] [2019-10-14 23:45:52,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:52,392 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:45:52,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:45:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:53,039 WARN L191 SmtUtils]: Spent 237.00 ms on a formula simplification that was a NOOP. DAG size: 196 [2019-10-14 23:45:53,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:45:53,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:45:53,126 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92301180] [2019-10-14 23:45:53,126 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:45:53,127 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2019-10-14 23:45:53,127 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579213861] [2019-10-14 23:45:53,127 INFO L442 AbstractCegarLoop]: Interpolant automaton has 14 states [2019-10-14 23:45:53,128 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:45:53,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2019-10-14 23:45:53,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2019-10-14 23:45:53,129 INFO L87 Difference]: Start difference. First operand 3558 states and 5350 transitions. Second operand 14 states. [2019-10-14 23:45:53,588 WARN L191 SmtUtils]: Spent 384.00 ms on a formula simplification that was a NOOP. DAG size: 209