java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 19:45:06,162 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 19:45:06,164 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 19:45:06,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 19:45:06,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 19:45:06,178 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 19:45:06,179 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 19:45:06,181 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 19:45:06,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 19:45:06,184 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 19:45:06,185 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 19:45:06,186 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 19:45:06,186 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 19:45:06,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 19:45:06,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 19:45:06,189 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 19:45:06,190 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 19:45:06,191 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 19:45:06,193 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 19:45:06,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 19:45:06,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 19:45:06,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 19:45:06,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 19:45:06,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 19:45:06,203 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 19:45:06,203 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 19:45:06,204 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 19:45:06,205 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 19:45:06,205 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 19:45:06,206 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 19:45:06,206 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 19:45:06,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 19:45:06,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 19:45:06,209 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 19:45:06,210 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 19:45:06,210 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 19:45:06,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 19:45:06,212 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 19:45:06,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 19:45:06,213 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 19:45:06,214 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 19:45:06,214 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 [2019-10-13 19:45:06,230 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 19:45:06,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 19:45:06,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 19:45:06,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 19:45:06,232 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 19:45:06,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 19:45:06,232 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 19:45:06,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 19:45:06,233 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 19:45:06,233 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 19:45:06,233 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 19:45:06,233 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 19:45:06,233 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 19:45:06,234 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 19:45:06,234 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 19:45:06,234 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 19:45:06,234 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 19:45:06,234 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 19:45:06,235 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 19:45:06,235 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 19:45:06,235 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 19:45:06,235 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 19:45:06,236 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 19:45:06,236 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 19:45:06,236 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 19:45:06,236 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 19:45:06,236 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 19:45:06,237 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 19:45:06,237 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-13 19:45:06,554 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 19:45:06,571 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 19:45:06,575 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 19:45:06,576 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 19:45:06,577 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 19:45:06,578 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-13 19:45:06,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8e236d/92954aee90b1439aa6d910af895db193/FLAG061b021a5 [2019-10-13 19:45:07,243 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 19:45:07,245 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-13 19:45:07,262 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8e236d/92954aee90b1439aa6d910af895db193/FLAG061b021a5 [2019-10-13 19:45:07,524 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dad8e236d/92954aee90b1439aa6d910af895db193 [2019-10-13 19:45:07,535 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 19:45:07,536 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 19:45:07,537 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:07,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 19:45:07,541 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 19:45:07,542 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:07" (1/1) ... [2019-10-13 19:45:07,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36eec1d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:07, skipping insertion in model container [2019-10-13 19:45:07,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 07:45:07" (1/1) ... [2019-10-13 19:45:07,552 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 19:45:07,604 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 19:45:08,131 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:08,153 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 19:45:08,315 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 19:45:08,336 INFO L192 MainTranslator]: Completed translation [2019-10-13 19:45:08,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08 WrapperNode [2019-10-13 19:45:08,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 19:45:08,338 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 19:45:08,338 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 19:45:08,338 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 19:45:08,348 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,349 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,370 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,370 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,423 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,441 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,456 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (1/1) ... [2019-10-13 19:45:08,472 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 19:45:08,472 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 19:45:08,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 19:45:08,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 19:45:08,479 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (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 [2019-10-13 19:45:08,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 19:45:08,564 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 19:45:08,565 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 19:45:08,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 19:45:08,565 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2019-10-13 19:45:08,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2019-10-13 19:45:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2019-10-13 19:45:08,567 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2019-10-13 19:45:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 19:45:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure read [2019-10-13 19:45:08,568 INFO L130 BoogieDeclarations]: Found specification of procedure write [2019-10-13 19:45:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2019-10-13 19:45:08,569 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2019-10-13 19:45:08,570 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2019-10-13 19:45:08,570 INFO L130 BoogieDeclarations]: Found specification of procedure init [2019-10-13 19:45:08,571 INFO L130 BoogieDeclarations]: Found specification of procedure check [2019-10-13 19:45:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 19:45:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 19:45:08,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 19:45:10,076 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 19:45:10,077 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-13 19:45:10,078 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:10 BoogieIcfgContainer [2019-10-13 19:45:10,078 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 19:45:10,080 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 19:45:10,080 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 19:45:10,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 19:45:10,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 07:45:07" (1/3) ... [2019-10-13 19:45:10,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9127ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:10, skipping insertion in model container [2019-10-13 19:45:10,085 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 07:45:08" (2/3) ... [2019-10-13 19:45:10,085 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f9127ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 07:45:10, skipping insertion in model container [2019-10-13 19:45:10,086 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 07:45:10" (3/3) ... [2019-10-13 19:45:10,087 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.3.ufo.UNBOUNDED.pals.c.v+nlh-reducer.c [2019-10-13 19:45:10,098 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 19:45:10,115 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 19:45:10,126 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 19:45:10,157 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 19:45:10,158 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 19:45:10,158 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 19:45:10,158 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 19:45:10,158 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 19:45:10,158 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 19:45:10,158 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 19:45:10,158 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 19:45:10,186 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states. [2019-10-13 19:45:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:10,203 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:10,205 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] [2019-10-13 19:45:10,207 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:10,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash 885340602, now seen corresponding path program 1 times [2019-10-13 19:45:10,221 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:10,221 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30327509] [2019-10-13 19:45:10,221 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:10,222 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:10,222 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:11,097 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:11,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:11,159 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30327509] [2019-10-13 19:45:11,160 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:11,160 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:11,161 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247387743] [2019-10-13 19:45:11,167 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:11,167 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:11,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:11,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:11,187 INFO L87 Difference]: Start difference. First operand 317 states. Second operand 4 states. [2019-10-13 19:45:11,525 WARN L191 SmtUtils]: Spent 261.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-13 19:45:13,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:13,119 INFO L93 Difference]: Finished difference Result 641 states and 1120 transitions. [2019-10-13 19:45:13,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:13,121 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-13 19:45:13,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:13,142 INFO L225 Difference]: With dead ends: 641 [2019-10-13 19:45:13,142 INFO L226 Difference]: Without dead ends: 514 [2019-10-13 19:45:13,147 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 [2019-10-13 19:45:13,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2019-10-13 19:45:13,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 512. [2019-10-13 19:45:13,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 512 states. [2019-10-13 19:45:13,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 761 transitions. [2019-10-13 19:45:13,237 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 761 transitions. Word has length 150 [2019-10-13 19:45:13,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:13,238 INFO L462 AbstractCegarLoop]: Abstraction has 512 states and 761 transitions. [2019-10-13 19:45:13,238 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:13,239 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 761 transitions. [2019-10-13 19:45:13,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:13,243 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:13,243 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] [2019-10-13 19:45:13,244 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:13,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:13,244 INFO L82 PathProgramCache]: Analyzing trace with hash -20093490, now seen corresponding path program 1 times [2019-10-13 19:45:13,245 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:13,245 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001575940] [2019-10-13 19:45:13,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:13,245 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:13,245 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:13,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:13,602 WARN L191 SmtUtils]: Spent 197.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:13,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:13,691 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:13,692 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001575940] [2019-10-13 19:45:13,692 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:13,693 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:13,693 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330948373] [2019-10-13 19:45:13,696 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:13,696 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:13,697 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:13,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:13,697 INFO L87 Difference]: Start difference. First operand 512 states and 761 transitions. Second operand 4 states. [2019-10-13 19:45:13,918 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-13 19:45:15,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:15,154 INFO L93 Difference]: Finished difference Result 1076 states and 1646 transitions. [2019-10-13 19:45:15,155 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:15,155 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 150 [2019-10-13 19:45:15,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:15,162 INFO L225 Difference]: With dead ends: 1076 [2019-10-13 19:45:15,162 INFO L226 Difference]: Without dead ends: 884 [2019-10-13 19:45:15,165 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 884 states. [2019-10-13 19:45:15,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 884 to 882. [2019-10-13 19:45:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 882 states. [2019-10-13 19:45:15,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1323 transitions. [2019-10-13 19:45:15,238 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1323 transitions. Word has length 150 [2019-10-13 19:45:15,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:15,241 INFO L462 AbstractCegarLoop]: Abstraction has 882 states and 1323 transitions. [2019-10-13 19:45:15,241 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:15,241 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1323 transitions. [2019-10-13 19:45:15,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2019-10-13 19:45:15,248 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:15,248 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] [2019-10-13 19:45:15,249 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:15,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:15,249 INFO L82 PathProgramCache]: Analyzing trace with hash 1175617460, now seen corresponding path program 1 times [2019-10-13 19:45:15,249 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:15,250 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923905613] [2019-10-13 19:45:15,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:15,250 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:15,250 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:15,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:15,812 WARN L191 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:15,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:15,860 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923905613] [2019-10-13 19:45:15,861 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:15,861 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:15,861 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582578374] [2019-10-13 19:45:15,862 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:15,863 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:15,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:15,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:15,864 INFO L87 Difference]: Start difference. First operand 882 states and 1323 transitions. Second operand 5 states. [2019-10-13 19:45:18,183 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:18,184 INFO L93 Difference]: Finished difference Result 2577 states and 3862 transitions. [2019-10-13 19:45:18,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:18,184 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2019-10-13 19:45:18,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:18,194 INFO L225 Difference]: With dead ends: 2577 [2019-10-13 19:45:18,194 INFO L226 Difference]: Without dead ends: 1708 [2019-10-13 19:45:18,198 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:18,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1708 states. [2019-10-13 19:45:18,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1708 to 1706. [2019-10-13 19:45:18,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1706 states. [2019-10-13 19:45:18,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1706 states to 1706 states and 2536 transitions. [2019-10-13 19:45:18,275 INFO L78 Accepts]: Start accepts. Automaton has 1706 states and 2536 transitions. Word has length 150 [2019-10-13 19:45:18,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:18,276 INFO L462 AbstractCegarLoop]: Abstraction has 1706 states and 2536 transitions. [2019-10-13 19:45:18,276 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:18,276 INFO L276 IsEmpty]: Start isEmpty. Operand 1706 states and 2536 transitions. [2019-10-13 19:45:18,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2019-10-13 19:45:18,283 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:18,283 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] [2019-10-13 19:45:18,284 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:18,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:18,284 INFO L82 PathProgramCache]: Analyzing trace with hash -522806920, now seen corresponding path program 1 times [2019-10-13 19:45:18,285 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:18,285 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782170391] [2019-10-13 19:45:18,285 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:18,286 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:18,286 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:18,663 WARN L191 SmtUtils]: Spent 284.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:18,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:18,719 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782170391] [2019-10-13 19:45:18,720 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:18,720 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:18,721 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769812018] [2019-10-13 19:45:18,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:18,722 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:18,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:18,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:18,723 INFO L87 Difference]: Start difference. First operand 1706 states and 2536 transitions. Second operand 4 states. [2019-10-13 19:45:21,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:21,852 INFO L93 Difference]: Finished difference Result 5072 states and 7538 transitions. [2019-10-13 19:45:21,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:21,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 151 [2019-10-13 19:45:21,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:21,872 INFO L225 Difference]: With dead ends: 5072 [2019-10-13 19:45:21,872 INFO L226 Difference]: Without dead ends: 3398 [2019-10-13 19:45:21,877 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 [2019-10-13 19:45:21,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3398 states. [2019-10-13 19:45:22,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3398 to 1708. [2019-10-13 19:45:22,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1708 states. [2019-10-13 19:45:22,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1708 states to 1708 states and 2538 transitions. [2019-10-13 19:45:22,012 INFO L78 Accepts]: Start accepts. Automaton has 1708 states and 2538 transitions. Word has length 151 [2019-10-13 19:45:22,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:22,013 INFO L462 AbstractCegarLoop]: Abstraction has 1708 states and 2538 transitions. [2019-10-13 19:45:22,013 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:22,013 INFO L276 IsEmpty]: Start isEmpty. Operand 1708 states and 2538 transitions. [2019-10-13 19:45:22,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:45:22,019 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:22,020 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] [2019-10-13 19:45:22,020 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:22,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:22,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1124709406, now seen corresponding path program 1 times [2019-10-13 19:45:22,021 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:22,023 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284835142] [2019-10-13 19:45:22,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,024 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:22,025 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:22,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:22,466 WARN L191 SmtUtils]: Spent 280.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:22,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:22,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:22,541 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284835142] [2019-10-13 19:45:22,542 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:22,542 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:22,542 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622436168] [2019-10-13 19:45:22,543 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:22,543 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:22,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:22,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:22,544 INFO L87 Difference]: Start difference. First operand 1708 states and 2538 transitions. Second operand 4 states. [2019-10-13 19:45:25,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:25,083 INFO L93 Difference]: Finished difference Result 4838 states and 7205 transitions. [2019-10-13 19:45:25,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:25,083 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 152 [2019-10-13 19:45:25,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:25,100 INFO L225 Difference]: With dead ends: 4838 [2019-10-13 19:45:25,100 INFO L226 Difference]: Without dead ends: 3310 [2019-10-13 19:45:25,104 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 [2019-10-13 19:45:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3310 states. [2019-10-13 19:45:25,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3310 to 3308. [2019-10-13 19:45:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3308 states. [2019-10-13 19:45:25,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3308 states to 3308 states and 4871 transitions. [2019-10-13 19:45:25,268 INFO L78 Accepts]: Start accepts. Automaton has 3308 states and 4871 transitions. Word has length 152 [2019-10-13 19:45:25,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:25,269 INFO L462 AbstractCegarLoop]: Abstraction has 3308 states and 4871 transitions. [2019-10-13 19:45:25,269 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:25,269 INFO L276 IsEmpty]: Start isEmpty. Operand 3308 states and 4871 transitions. [2019-10-13 19:45:25,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2019-10-13 19:45:25,275 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:25,275 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] [2019-10-13 19:45:25,276 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:25,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:25,276 INFO L82 PathProgramCache]: Analyzing trace with hash -617278081, now seen corresponding path program 1 times [2019-10-13 19:45:25,276 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:25,277 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815379827] [2019-10-13 19:45:25,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:25,277 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:25,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:25,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:25,634 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:25,670 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815379827] [2019-10-13 19:45:25,671 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:25,671 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-13 19:45:25,671 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234030512] [2019-10-13 19:45:25,672 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-13 19:45:25,672 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-13 19:45:25,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-13 19:45:25,673 INFO L87 Difference]: Start difference. First operand 3308 states and 4871 transitions. Second operand 5 states. [2019-10-13 19:45:27,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:27,080 INFO L93 Difference]: Finished difference Result 5666 states and 8353 transitions. [2019-10-13 19:45:27,081 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-13 19:45:27,081 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2019-10-13 19:45:27,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:27,093 INFO L225 Difference]: With dead ends: 5666 [2019-10-13 19:45:27,093 INFO L226 Difference]: Without dead ends: 2528 [2019-10-13 19:45:27,100 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 [2019-10-13 19:45:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2528 states. [2019-10-13 19:45:27,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2528 to 2528. [2019-10-13 19:45:27,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2528 states. [2019-10-13 19:45:27,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2528 states to 2528 states and 3707 transitions. [2019-10-13 19:45:27,208 INFO L78 Accepts]: Start accepts. Automaton has 2528 states and 3707 transitions. Word has length 152 [2019-10-13 19:45:27,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:27,208 INFO L462 AbstractCegarLoop]: Abstraction has 2528 states and 3707 transitions. [2019-10-13 19:45:27,208 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-13 19:45:27,209 INFO L276 IsEmpty]: Start isEmpty. Operand 2528 states and 3707 transitions. [2019-10-13 19:45:27,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:45:27,214 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:27,214 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, 1] [2019-10-13 19:45:27,214 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:27,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:27,215 INFO L82 PathProgramCache]: Analyzing trace with hash 696225132, now seen corresponding path program 1 times [2019-10-13 19:45:27,215 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:27,215 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367304392] [2019-10-13 19:45:27,215 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:27,216 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:27,216 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:27,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,499 WARN L191 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:27,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:27,531 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367304392] [2019-10-13 19:45:27,531 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:27,531 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-13 19:45:27,532 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412970896] [2019-10-13 19:45:27,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-13 19:45:27,532 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:27,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-13 19:45:27,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:27,533 INFO L87 Difference]: Start difference. First operand 2528 states and 3707 transitions. Second operand 4 states. [2019-10-13 19:45:29,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:29,014 INFO L93 Difference]: Finished difference Result 6812 states and 10094 transitions. [2019-10-13 19:45:29,015 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-13 19:45:29,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 158 [2019-10-13 19:45:29,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:29,038 INFO L225 Difference]: With dead ends: 6812 [2019-10-13 19:45:29,038 INFO L226 Difference]: Without dead ends: 4696 [2019-10-13 19:45:29,044 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-13 19:45:29,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4696 states. [2019-10-13 19:45:29,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4696 to 4694. [2019-10-13 19:45:29,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4694 states. [2019-10-13 19:45:29,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4694 states to 4694 states and 6887 transitions. [2019-10-13 19:45:29,294 INFO L78 Accepts]: Start accepts. Automaton has 4694 states and 6887 transitions. Word has length 158 [2019-10-13 19:45:29,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:29,294 INFO L462 AbstractCegarLoop]: Abstraction has 4694 states and 6887 transitions. [2019-10-13 19:45:29,294 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-13 19:45:29,295 INFO L276 IsEmpty]: Start isEmpty. Operand 4694 states and 6887 transitions. [2019-10-13 19:45:29,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:45:29,304 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:29,304 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, 1] [2019-10-13 19:45:29,304 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:29,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -1185599087, now seen corresponding path program 1 times [2019-10-13 19:45:29,305 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:29,305 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105952400] [2019-10-13 19:45:29,305 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:29,306 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:29,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:30,009 WARN L191 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:30,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:30,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:30,115 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105952400] [2019-10-13 19:45:30,115 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:30,115 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2019-10-13 19:45:30,116 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010536434] [2019-10-13 19:45:30,117 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-13 19:45:30,117 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:30,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-13 19:45:30,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=192, Unknown=0, NotChecked=0, Total=240 [2019-10-13 19:45:30,119 INFO L87 Difference]: Start difference. First operand 4694 states and 6887 transitions. Second operand 16 states. [2019-10-13 19:45:30,413 WARN L191 SmtUtils]: Spent 211.00 ms on a formula simplification that was a NOOP. DAG size: 175 [2019-10-13 19:45:33,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:33,884 INFO L93 Difference]: Finished difference Result 12388 states and 19102 transitions. [2019-10-13 19:45:33,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-13 19:45:33,884 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 158 [2019-10-13 19:45:33,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:33,922 INFO L225 Difference]: With dead ends: 12388 [2019-10-13 19:45:33,923 INFO L226 Difference]: Without dead ends: 8416 [2019-10-13 19:45:33,932 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2019-10-13 19:45:33,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8416 states. [2019-10-13 19:45:34,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8416 to 6432. [2019-10-13 19:45:34,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6432 states. [2019-10-13 19:45:34,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6432 states to 6432 states and 9844 transitions. [2019-10-13 19:45:34,281 INFO L78 Accepts]: Start accepts. Automaton has 6432 states and 9844 transitions. Word has length 158 [2019-10-13 19:45:34,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:34,281 INFO L462 AbstractCegarLoop]: Abstraction has 6432 states and 9844 transitions. [2019-10-13 19:45:34,282 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-13 19:45:34,282 INFO L276 IsEmpty]: Start isEmpty. Operand 6432 states and 9844 transitions. [2019-10-13 19:45:34,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:45:34,289 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:34,289 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, 1] [2019-10-13 19:45:34,289 INFO L410 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:34,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:34,290 INFO L82 PathProgramCache]: Analyzing trace with hash 11065959, now seen corresponding path program 1 times [2019-10-13 19:45:34,290 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:34,290 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387167671] [2019-10-13 19:45:34,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,290 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:34,291 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:34,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:34,698 WARN L191 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:34,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:34,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:34,813 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387167671] [2019-10-13 19:45:34,813 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:34,813 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 19:45:34,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [346092477] [2019-10-13 19:45:34,814 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 19:45:34,814 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:34,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 19:45:34,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-13 19:45:34,818 INFO L87 Difference]: Start difference. First operand 6432 states and 9844 transitions. Second operand 10 states. [2019-10-13 19:45:35,068 WARN L191 SmtUtils]: Spent 192.00 ms on a formula simplification that was a NOOP. DAG size: 167 [2019-10-13 19:45:36,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:36,593 INFO L93 Difference]: Finished difference Result 13818 states and 21476 transitions. [2019-10-13 19:45:36,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 19:45:36,593 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 158 [2019-10-13 19:45:36,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:36,631 INFO L225 Difference]: With dead ends: 13818 [2019-10-13 19:45:36,631 INFO L226 Difference]: Without dead ends: 9628 [2019-10-13 19:45:36,640 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-13 19:45:36,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9628 states. [2019-10-13 19:45:36,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9628 to 7796. [2019-10-13 19:45:36,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7796 states. [2019-10-13 19:45:37,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7796 states to 7796 states and 11622 transitions. [2019-10-13 19:45:37,003 INFO L78 Accepts]: Start accepts. Automaton has 7796 states and 11622 transitions. Word has length 158 [2019-10-13 19:45:37,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 19:45:37,004 INFO L462 AbstractCegarLoop]: Abstraction has 7796 states and 11622 transitions. [2019-10-13 19:45:37,004 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 19:45:37,004 INFO L276 IsEmpty]: Start isEmpty. Operand 7796 states and 11622 transitions. [2019-10-13 19:45:37,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2019-10-13 19:45:37,014 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 19:45:37,014 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, 1] [2019-10-13 19:45:37,015 INFO L410 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 19:45:37,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 19:45:37,015 INFO L82 PathProgramCache]: Analyzing trace with hash -362607228, now seen corresponding path program 1 times [2019-10-13 19:45:37,015 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-13 19:45:37,015 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055217074] [2019-10-13 19:45:37,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:37,016 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 19:45:37,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 19:45:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,409 WARN L191 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2019-10-13 19:45:37,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 19:45:37,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 19:45:37,484 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055217074] [2019-10-13 19:45:37,487 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 19:45:37,488 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-13 19:45:37,488 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780010880] [2019-10-13 19:45:37,489 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-13 19:45:37,489 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-13 19:45:37,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-13 19:45:37,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-10-13 19:45:37,490 INFO L87 Difference]: Start difference. First operand 7796 states and 11622 transitions. Second operand 6 states. [2019-10-13 19:45:37,878 WARN L191 SmtUtils]: Spent 349.00 ms on a formula simplification that was a NOOP. DAG size: 169 [2019-10-13 19:45:40,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 19:45:40,290 INFO L93 Difference]: Finished difference Result 16045 states and 25162 transitions. [2019-10-13 19:45:40,294 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-13 19:45:40,294 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 158 [2019-10-13 19:45:40,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 19:45:40,322 INFO L225 Difference]: With dead ends: 16045 [2019-10-13 19:45:40,323 INFO L226 Difference]: Without dead ends: 14207 [2019-10-13 19:45:40,330 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-10-13 19:45:40,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14207 states.