/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 09:31:04,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 09:31:04,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 09:31:05,032 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 09:31:05,033 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 09:31:05,040 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 09:31:05,042 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 09:31:05,044 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 09:31:05,047 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 09:31:05,049 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 09:31:05,050 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 09:31:05,053 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 09:31:05,053 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 09:31:05,056 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 09:31:05,058 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 09:31:05,060 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 09:31:05,061 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 09:31:05,062 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 09:31:05,063 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 09:31:05,069 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 09:31:05,073 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 09:31:05,074 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 09:31:05,074 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 09:31:05,075 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 09:31:05,087 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 09:31:05,087 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 09:31:05,088 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 09:31:05,090 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 09:31:05,090 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 09:31:05,091 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 09:31:05,091 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 09:31:05,092 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 09:31:05,093 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 09:31:05,096 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 09:31:05,097 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 09:31:05,097 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 09:31:05,098 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 09:31:05,098 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 09:31:05,100 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 09:31:05,101 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 09:31:05,101 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 09:31:05,102 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 09:31:05,145 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 09:31:05,145 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 09:31:05,147 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 09:31:05,147 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 09:31:05,148 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 09:31:05,148 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 09:31:05,148 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 09:31:05,149 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 09:31:05,149 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 09:31:05,149 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 09:31:05,150 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 09:31:05,150 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 09:31:05,151 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 09:31:05,151 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 09:31:05,151 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 09:31:05,151 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 09:31:05,152 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 09:31:05,152 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 09:31:05,152 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 09:31:05,152 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 09:31:05,152 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 09:31:05,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:31:05,153 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 09:31:05,153 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 09:31:05,153 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 09:31:05,153 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 09:31:05,153 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 09:31:05,154 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 09:31:05,154 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 09:31:05,154 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 09:31:05,458 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 09:31:05,477 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 09:31:05,481 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 09:31:05,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 09:31:05,483 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 09:31:05,484 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c [2020-10-12 09:31:05,541 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13c589d0b/8407e201d4d041a2bd46514fa3f6e7c7/FLAGd0bcd1cab [2020-10-12 09:31:05,938 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 09:31:05,939 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_pair_sum_const.c [2020-10-12 09:31:05,948 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13c589d0b/8407e201d4d041a2bd46514fa3f6e7c7/FLAGd0bcd1cab [2020-10-12 09:31:06,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/13c589d0b/8407e201d4d041a2bd46514fa3f6e7c7 [2020-10-12 09:31:06,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 09:31:06,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 09:31:06,325 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 09:31:06,326 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 09:31:06,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 09:31:06,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,333 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3386436d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06, skipping insertion in model container [2020-10-12 09:31:06,333 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 09:31:06,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 09:31:06,535 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:31:06,539 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 09:31:06,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 09:31:06,585 INFO L208 MainTranslator]: Completed translation [2020-10-12 09:31:06,585 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06 WrapperNode [2020-10-12 09:31:06,586 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 09:31:06,586 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 09:31:06,587 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 09:31:06,587 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 09:31:06,767 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,767 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,783 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,783 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,813 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,820 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... [2020-10-12 09:31:06,823 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 09:31:06,824 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 09:31:06,824 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 09:31:06,824 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 09:31:06,825 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 09:31:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 09:31:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 09:31:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 09:31:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 09:31:06,909 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 09:31:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 09:31:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 09:31:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 09:31:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 09:31:06,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 09:31:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 09:31:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 09:31:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 09:31:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 09:31:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 09:31:06,911 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 09:31:07,230 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 09:31:07,231 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 09:31:07,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:31:07 BoogieIcfgContainer [2020-10-12 09:31:07,235 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 09:31:07,237 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 09:31:07,237 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 09:31:07,240 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 09:31:07,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 09:31:06" (1/3) ... [2020-10-12 09:31:07,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e5bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:31:07, skipping insertion in model container [2020-10-12 09:31:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 09:31:06" (2/3) ... [2020-10-12 09:31:07,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@534e5bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 09:31:07, skipping insertion in model container [2020-10-12 09:31:07,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 09:31:07" (3/3) ... [2020-10-12 09:31:07,244 INFO L109 eAbstractionObserver]: Analyzing ICFG array_init_pair_sum_const.c [2020-10-12 09:31:07,255 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 09:31:07,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 09:31:07,284 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 09:31:07,316 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 09:31:07,316 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 09:31:07,316 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 09:31:07,317 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 09:31:07,317 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 09:31:07,317 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 09:31:07,317 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 09:31:07,317 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 09:31:07,340 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2020-10-12 09:31:07,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-12 09:31:07,348 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:07,349 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:07,350 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:07,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:07,357 INFO L82 PathProgramCache]: Analyzing trace with hash -592238034, now seen corresponding path program 1 times [2020-10-12 09:31:07,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:07,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573821974] [2020-10-12 09:31:07,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:07,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:08,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:08,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-12 09:31:08,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:31:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 509 [2020-10-12 09:31:08,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:08,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 09:31:08,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-12 09:31:08,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 09:31:08,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-12 09:31:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:31:08,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:08,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:08,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:08,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:31:08,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:08,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:31:08,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:31:08,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:08,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:31:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:31:08,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:31:08,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573821974] [2020-10-12 09:31:08,145 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 09:31:08,145 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 09:31:08,146 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1691778893] [2020-10-12 09:31:08,152 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 09:31:08,153 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:31:08,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 09:31:08,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-12 09:31:08,167 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 6 states. [2020-10-12 09:31:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:31:08,348 INFO L93 Difference]: Finished difference Result 60 states and 81 transitions. [2020-10-12 09:31:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 09:31:08,350 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-12 09:31:08,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:31:08,359 INFO L225 Difference]: With dead ends: 60 [2020-10-12 09:31:08,360 INFO L226 Difference]: Without dead ends: 26 [2020-10-12 09:31:08,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-12 09:31:08,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-12 09:31:08,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-10-12 09:31:08,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-12 09:31:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-10-12 09:31:08,402 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 15 [2020-10-12 09:31:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:31:08,403 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-10-12 09:31:08,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 09:31:08,403 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-10-12 09:31:08,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-12 09:31:08,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:08,405 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:08,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 09:31:08,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:08,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:08,406 INFO L82 PathProgramCache]: Analyzing trace with hash 941470890, now seen corresponding path program 1 times [2020-10-12 09:31:08,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:08,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868286492] [2020-10-12 09:31:08,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:08,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:08,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:08,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:08,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:08,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:08,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-12 09:31:08,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:31:08,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 389 [2020-10-12 09:31:08,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:08,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 09:31:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-12 09:31:08,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:31:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:08,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:31:08,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:08,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:08,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:08,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:31:08,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:08,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:31:08,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:31:08,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:08,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:31:08,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:08,866 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-12 09:31:08,867 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868286492] [2020-10-12 09:31:08,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:31:08,867 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 09:31:08,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840969960] [2020-10-12 09:31:08,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 09:31:08,870 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:31:08,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 09:31:08,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-12 09:31:08,871 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 7 states. [2020-10-12 09:31:09,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:31:09,047 INFO L93 Difference]: Finished difference Result 50 states and 56 transitions. [2020-10-12 09:31:09,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 09:31:09,048 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-12 09:31:09,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:31:09,052 INFO L225 Difference]: With dead ends: 50 [2020-10-12 09:31:09,052 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 09:31:09,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-12 09:31:09,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 09:31:09,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2020-10-12 09:31:09,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 09:31:09,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-12 09:31:09,066 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2020-10-12 09:31:09,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:31:09,066 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-12 09:31:09,066 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 09:31:09,066 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-12 09:31:09,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-12 09:31:09,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:09,067 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:09,068 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 09:31:09,068 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:09,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:09,068 INFO L82 PathProgramCache]: Analyzing trace with hash -2146463450, now seen corresponding path program 2 times [2020-10-12 09:31:09,069 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:09,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370124049] [2020-10-12 09:31:09,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:09,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:09,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:09,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:10,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:10,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:10,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 09:31:10,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:31:10,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1305 [2020-10-12 09:31:10,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 09:31:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:31:10,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:31:10,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:31:10,839 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 28 [2020-10-12 09:31:11,188 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 47 [2020-10-12 09:31:11,530 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 53 [2020-10-12 09:31:11,976 WARN L193 SmtUtils]: Spent 413.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 51 [2020-10-12 09:31:12,304 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 43 [2020-10-12 09:31:12,782 WARN L193 SmtUtils]: Spent 437.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 57 [2020-10-12 09:31:13,251 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 78 [2020-10-12 09:31:13,576 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 39 [2020-10-12 09:31:13,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:31:13,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:13,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:13,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:13,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:31:13,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:13,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:31:13,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:31:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:13,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:31:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:13,871 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:31:13,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370124049] [2020-10-12 09:31:13,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:31:13,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 09:31:13,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145487611] [2020-10-12 09:31:13,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 09:31:13,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:31:13,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 09:31:13,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:31:13,874 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 18 states. [2020-10-12 09:31:14,326 WARN L193 SmtUtils]: Spent 388.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-10-12 09:31:14,536 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 56 [2020-10-12 09:31:15,019 WARN L193 SmtUtils]: Spent 419.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-10-12 09:31:15,280 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 59 [2020-10-12 09:31:15,786 WARN L193 SmtUtils]: Spent 407.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 73 [2020-10-12 09:31:15,970 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 47 [2020-10-12 09:31:16,236 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 113 [2020-10-12 09:31:17,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:31:17,116 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-12 09:31:17,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 09:31:17,117 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 23 [2020-10-12 09:31:17,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:31:17,119 INFO L225 Difference]: With dead ends: 45 [2020-10-12 09:31:17,119 INFO L226 Difference]: Without dead ends: 43 [2020-10-12 09:31:17,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=137, Invalid=855, Unknown=0, NotChecked=0, Total=992 [2020-10-12 09:31:17,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-10-12 09:31:17,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2020-10-12 09:31:17,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 09:31:17,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-12 09:31:17,134 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 23 [2020-10-12 09:31:17,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:31:17,134 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-12 09:31:17,135 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 09:31:17,135 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-12 09:31:17,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-12 09:31:17,136 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:17,136 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:17,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 09:31:17,136 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:17,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:17,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1137121276, now seen corresponding path program 3 times [2020-10-12 09:31:17,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:17,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700659221] [2020-10-12 09:31:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:17,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:17,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:17,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:17,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:18,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:18,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-12 09:31:18,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:31:18,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1724 [2020-10-12 09:31:18,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:18,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 09:31:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:31:18,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-12 09:31:18,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:19,488 WARN L193 SmtUtils]: Spent 161.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 37 [2020-10-12 09:31:19,631 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 31 [2020-10-12 09:31:19,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:31:19,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:19,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:19,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:19,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:31:19,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:19,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 09:31:19,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:31:19,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:19,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:31:19,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 09:31:19,794 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:31:19,795 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700659221] [2020-10-12 09:31:19,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:31:19,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 09:31:19,796 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103765062] [2020-10-12 09:31:19,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 09:31:19,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:31:19,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 09:31:19,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:31:19,800 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 14 states. [2020-10-12 09:31:20,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:31:20,327 INFO L93 Difference]: Finished difference Result 48 states and 51 transitions. [2020-10-12 09:31:20,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 09:31:20,328 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 25 [2020-10-12 09:31:20,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:31:20,331 INFO L225 Difference]: With dead ends: 48 [2020-10-12 09:31:20,331 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:31:20,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:31:20,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:31:20,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 34. [2020-10-12 09:31:20,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-12 09:31:20,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-12 09:31:20,344 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 25 [2020-10-12 09:31:20,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:31:20,345 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-12 09:31:20,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 09:31:20,345 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-12 09:31:20,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-12 09:31:20,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:20,347 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:20,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 09:31:20,347 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:20,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:20,348 INFO L82 PathProgramCache]: Analyzing trace with hash -956809123, now seen corresponding path program 1 times [2020-10-12 09:31:20,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:20,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327678770] [2020-10-12 09:31:20,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:20,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:20,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:20,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:21,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:21,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-12 09:31:21,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:31:21,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 782 [2020-10-12 09:31:21,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 09:31:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-12 09:31:21,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 09:31:21,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:21,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:31:21,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:21,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:21,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:21,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:31:21,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:21,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:31:21,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:31:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:21,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:31:21,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:21,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-12 09:31:21,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:21,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:21,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:21,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:31:21,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:31:21,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:31:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:31:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:21,214 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 09:31:21,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327678770] [2020-10-12 09:31:21,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:31:21,215 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 09:31:21,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611549942] [2020-10-12 09:31:21,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 09:31:21,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:31:21,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 09:31:21,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-12 09:31:21,217 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2020-10-12 09:31:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:31:21,430 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-10-12 09:31:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 09:31:21,431 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-10-12 09:31:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:31:21,432 INFO L225 Difference]: With dead ends: 68 [2020-10-12 09:31:21,432 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 09:31:21,433 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-12 09:31:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 09:31:21,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2020-10-12 09:31:21,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-12 09:31:21,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-12 09:31:21,449 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 31 [2020-10-12 09:31:21,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:31:21,449 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-12 09:31:21,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 09:31:21,450 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-12 09:31:21,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-12 09:31:21,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:21,455 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:21,455 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 09:31:21,456 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:21,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:21,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1578382041, now seen corresponding path program 2 times [2020-10-12 09:31:21,457 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:21,457 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88360131] [2020-10-12 09:31:21,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:21,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:21,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:22,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:23,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:24,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:24,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-12 09:31:24,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:31:24,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3122 [2020-10-12 09:31:24,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 09:31:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:31:24,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 09:31:24,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:25,736 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 28 [2020-10-12 09:31:27,219 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification. DAG size of input: 208 DAG size of output: 46 [2020-10-12 09:31:28,207 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 220 DAG size of output: 52 [2020-10-12 09:31:29,356 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 232 DAG size of output: 75 [2020-10-12 09:31:30,745 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 300 DAG size of output: 86 [2020-10-12 09:31:32,870 WARN L193 SmtUtils]: Spent 2.01 s on a formula simplification. DAG size of input: 387 DAG size of output: 77 [2020-10-12 09:31:34,352 WARN L193 SmtUtils]: Spent 1.40 s on a formula simplification. DAG size of input: 279 DAG size of output: 65 [2020-10-12 09:31:36,005 WARN L193 SmtUtils]: Spent 1.54 s on a formula simplification. DAG size of input: 353 DAG size of output: 85 [2020-10-12 09:31:38,085 WARN L193 SmtUtils]: Spent 1.96 s on a formula simplification. DAG size of input: 334 DAG size of output: 162 [2020-10-12 09:31:39,525 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 277 DAG size of output: 99 [2020-10-12 09:31:40,449 WARN L193 SmtUtils]: Spent 796.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 84 [2020-10-12 09:31:41,025 WARN L193 SmtUtils]: Spent 470.00 ms on a formula simplification. DAG size of input: 202 DAG size of output: 42 [2020-10-12 09:31:41,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:31:41,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:41,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:41,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:41,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:31:41,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:41,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:31:41,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:31:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:41,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:31:41,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:41,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:31:41,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:41,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:41,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:41,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:31:41,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:31:41,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:31:41,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:41,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:31:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:31:41,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:31:41,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:31:41,647 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:31:41,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88360131] [2020-10-12 09:31:41,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:31:41,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 09:31:41,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579139762] [2020-10-12 09:31:41,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 09:31:41,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:31:41,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 09:31:41,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=457, Unknown=0, NotChecked=0, Total=506 [2020-10-12 09:31:41,649 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 23 states. [2020-10-12 09:31:42,401 WARN L193 SmtUtils]: Spent 612.00 ms on a formula simplification. DAG size of input: 309 DAG size of output: 102 [2020-10-12 09:31:43,969 WARN L193 SmtUtils]: Spent 1.48 s on a formula simplification. DAG size of input: 206 DAG size of output: 174 [2020-10-12 09:31:44,738 WARN L193 SmtUtils]: Spent 639.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 125 [2020-10-12 09:31:45,351 WARN L193 SmtUtils]: Spent 484.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 96 [2020-10-12 09:31:45,962 WARN L193 SmtUtils]: Spent 457.00 ms on a formula simplification. DAG size of input: 149 DAG size of output: 83 [2020-10-12 09:31:46,820 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 111 [2020-10-12 09:31:48,291 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 249 DAG size of output: 125 [2020-10-12 09:31:48,662 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 65 [2020-10-12 09:31:49,808 WARN L193 SmtUtils]: Spent 1.01 s on a formula simplification. DAG size of input: 204 DAG size of output: 203 [2020-10-12 09:31:51,070 WARN L193 SmtUtils]: Spent 1.12 s on a formula simplification. DAG size of input: 129 DAG size of output: 122 [2020-10-12 09:31:51,725 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 136 [2020-10-12 09:31:52,126 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 85 [2020-10-12 09:31:53,582 WARN L193 SmtUtils]: Spent 1.33 s on a formula simplification. DAG size of input: 150 DAG size of output: 143 [2020-10-12 09:31:53,971 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-12 09:31:54,350 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-12 09:31:55,752 WARN L193 SmtUtils]: Spent 1.29 s on a formula simplification. DAG size of input: 146 DAG size of output: 139 [2020-10-12 09:31:56,300 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 84 [2020-10-12 09:31:56,808 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 82 [2020-10-12 09:31:57,124 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 79 [2020-10-12 09:31:57,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:31:57,246 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-10-12 09:31:57,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 09:31:57,247 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 35 [2020-10-12 09:31:57,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:31:57,248 INFO L225 Difference]: With dead ends: 59 [2020-10-12 09:31:57,249 INFO L226 Difference]: Without dead ends: 57 [2020-10-12 09:31:57,251 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 30.2s TimeCoverageRelationStatistics Valid=227, Invalid=1843, Unknown=0, NotChecked=0, Total=2070 [2020-10-12 09:31:57,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-12 09:31:57,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2020-10-12 09:31:57,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 09:31:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 09:31:57,264 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 35 [2020-10-12 09:31:57,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:31:57,264 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 09:31:57,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 09:31:57,265 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 09:31:57,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-12 09:31:57,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:31:57,267 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:31:57,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 09:31:57,267 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:31:57,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:31:57,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1699930953, now seen corresponding path program 3 times [2020-10-12 09:31:57,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:31:57,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934204285] [2020-10-12 09:31:57,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:31:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:31:57,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:57,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:31:59,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:31:59,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-12 09:31:59,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:31:59,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-10-12 09:31:59,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:31:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 09:31:59,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 09:31:59,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 09:31:59,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:00,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:32:00,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:00,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:32:00,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:32:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:32:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:32:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:32:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:32:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:00,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-12 09:32:00,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:00,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:00,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:00,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:32:00,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:32:00,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:32:00,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:00,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:32:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:32:00,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:32:00,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:00,499 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 09:32:00,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934204285] [2020-10-12 09:32:00,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:32:00,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 09:32:00,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858499061] [2020-10-12 09:32:00,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 09:32:00,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:32:00,502 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 09:32:00,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-12 09:32:00,505 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 09:32:01,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:32:01,391 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-10-12 09:32:01,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 09:32:01,392 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 37 [2020-10-12 09:32:01,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:32:01,395 INFO L225 Difference]: With dead ends: 64 [2020-10-12 09:32:01,395 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 09:32:01,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=80, Invalid=472, Unknown=0, NotChecked=0, Total=552 [2020-10-12 09:32:01,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 09:32:01,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 46. [2020-10-12 09:32:01,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-12 09:32:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-12 09:32:01,414 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 37 [2020-10-12 09:32:01,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:32:01,414 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-12 09:32:01,414 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 09:32:01,414 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-12 09:32:01,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-12 09:32:01,415 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:32:01,415 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:32:01,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 09:32:01,416 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:32:01,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:32:01,416 INFO L82 PathProgramCache]: Analyzing trace with hash 379944720, now seen corresponding path program 4 times [2020-10-12 09:32:01,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:32:01,417 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2057654727] [2020-10-12 09:32:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:32:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:01,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:01,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:01,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:02,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:02,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-12 09:32:02,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 09:32:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1012 [2020-10-12 09:32:02,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 09:32:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 09:32:02,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 09:32:02,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:02,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:32:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:02,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:02,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:02,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:32:02,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:32:02,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:32:02,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:02,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:32:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:32:02,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:32:02,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:02,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 09:32:02,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:02,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:02,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:02,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:32:02,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:32:02,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:32:02,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:32:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:32:02,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:32:02,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:02,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 09:32:02,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:02,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:02,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:02,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:32:02,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:32:02,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 09:32:02,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:32:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:32:02,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:32:02,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:02,545 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-12 09:32:02,545 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2057654727] [2020-10-12 09:32:02,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:32:02,546 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 09:32:02,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9389129] [2020-10-12 09:32:02,546 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 09:32:02,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:32:02,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 09:32:02,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-10-12 09:32:02,547 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 11 states. [2020-10-12 09:32:02,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 09:32:02,856 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2020-10-12 09:32:02,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 09:32:02,857 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-12 09:32:02,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 09:32:02,858 INFO L225 Difference]: With dead ends: 86 [2020-10-12 09:32:02,859 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 09:32:02,859 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-12 09:32:02,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 09:32:02,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-10-12 09:32:02,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-12 09:32:02,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-12 09:32:02,878 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 43 [2020-10-12 09:32:02,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 09:32:02,878 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-12 09:32:02,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 09:32:02,878 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-12 09:32:02,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-12 09:32:02,882 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 09:32:02,882 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 09:32:02,883 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 09:32:02,883 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 09:32:02,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 09:32:02,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1695451020, now seen corresponding path program 5 times [2020-10-12 09:32:02,884 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 09:32:02,884 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428181379] [2020-10-12 09:32:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 09:32:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:32:02,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:05,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:32:06,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:32:06,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 09:32:06,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 09:32:06,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4019 [2020-10-12 09:32:06,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:32:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 09:32:06,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 09:32:06,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 09:32:06,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:32:11,110 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 29 [2020-10-12 09:32:11,861 WARN L193 SmtUtils]: Spent 711.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 64 [2020-10-12 09:32:12,611 WARN L193 SmtUtils]: Spent 705.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 67 [2020-10-12 09:32:16,262 WARN L193 SmtUtils]: Spent 3.51 s on a formula simplification. DAG size of input: 520 DAG size of output: 86 [2020-10-12 09:32:19,491 WARN L193 SmtUtils]: Spent 3.03 s on a formula simplification. DAG size of input: 461 DAG size of output: 89 [2020-10-12 09:32:23,540 WARN L193 SmtUtils]: Spent 3.80 s on a formula simplification. DAG size of input: 578 DAG size of output: 107 [2020-10-12 09:32:28,368 WARN L193 SmtUtils]: Spent 4.60 s on a formula simplification. DAG size of input: 638 DAG size of output: 118 [2020-10-12 09:32:36,568 WARN L193 SmtUtils]: Spent 7.90 s on a formula simplification. DAG size of input: 810 DAG size of output: 137 [2020-10-12 09:32:41,807 WARN L193 SmtUtils]: Spent 4.97 s on a formula simplification. DAG size of input: 522 DAG size of output: 117 [2020-10-12 09:32:50,264 WARN L193 SmtUtils]: Spent 8.16 s on a formula simplification. DAG size of input: 725 DAG size of output: 159 [2020-10-12 09:33:01,713 WARN L193 SmtUtils]: Spent 11.20 s on a formula simplification. DAG size of input: 683 DAG size of output: 288 [2020-10-12 09:33:15,586 WARN L193 SmtUtils]: Spent 13.60 s on a formula simplification. DAG size of input: 692 DAG size of output: 304 [2020-10-12 09:33:26,868 WARN L193 SmtUtils]: Spent 10.96 s on a formula simplification. DAG size of input: 654 DAG size of output: 283 [2020-10-12 09:33:32,295 WARN L193 SmtUtils]: Spent 5.16 s on a formula simplification. DAG size of input: 467 DAG size of output: 120 [2020-10-12 09:33:35,865 WARN L193 SmtUtils]: Spent 3.31 s on a formula simplification. DAG size of input: 391 DAG size of output: 101 [2020-10-12 09:33:37,822 WARN L193 SmtUtils]: Spent 1.73 s on a formula simplification. DAG size of input: 326 DAG size of output: 78 [2020-10-12 09:33:39,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 09:33:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:33:39,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:33:39,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:33:39,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 09:33:39,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:33:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 09:33:39,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:33:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 09:33:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:33:39,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 09:33:39,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:33:39,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-12 09:33:39,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:33:39,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:33:39,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:33:39,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:33:39,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:33:39,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 09:33:39,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:33:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:33:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:33:39,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:33:39,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:33:39,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-12 09:33:39,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 09:33:39,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 09:33:39,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 09:33:39,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 09:33:39,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 09:33:39,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 09:33:39,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 09:33:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 09:33:39,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 09:33:39,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 09:33:39,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 09:33:39,555 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 18 proven. 26 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-12 09:33:39,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428181379] [2020-10-12 09:33:39,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 09:33:39,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 09:33:39,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808633050] [2020-10-12 09:33:39,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 09:33:39,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 09:33:39,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 09:33:39,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=684, Unknown=0, NotChecked=0, Total=756 [2020-10-12 09:33:39,558 INFO L87 Difference]: Start difference. First operand 50 states and 52 transitions. Second operand 28 states. [2020-10-12 09:34:12,166 WARN L193 SmtUtils]: Spent 32.29 s on a formula simplification. DAG size of input: 824 DAG size of output: 613 [2020-10-12 09:34:13,457 WARN L193 SmtUtils]: Spent 969.00 ms on a formula simplification. DAG size of input: 170 DAG size of output: 128 [2020-10-12 09:34:17,517 WARN L193 SmtUtils]: Spent 3.83 s on a formula simplification. DAG size of input: 182 DAG size of output: 177 [2020-10-12 09:34:20,157 WARN L193 SmtUtils]: Spent 2.35 s on a formula simplification. DAG size of input: 177 DAG size of output: 135 [2020-10-12 09:34:23,018 WARN L193 SmtUtils]: Spent 2.40 s on a formula simplification. DAG size of input: 191 DAG size of output: 131 [2020-10-12 09:34:25,996 WARN L193 SmtUtils]: Spent 2.54 s on a formula simplification. DAG size of input: 228 DAG size of output: 121 [2020-10-12 09:34:35,393 WARN L193 SmtUtils]: Spent 9.11 s on a formula simplification. DAG size of input: 195 DAG size of output: 163 [2020-10-12 09:34:51,989 WARN L193 SmtUtils]: Spent 16.05 s on a formula simplification. DAG size of input: 404 DAG size of output: 180 [2020-10-12 09:34:55,272 WARN L193 SmtUtils]: Spent 2.75 s on a formula simplification. DAG size of input: 344 DAG size of output: 136 [2020-10-12 09:35:10,380 WARN L193 SmtUtils]: Spent 14.40 s on a formula simplification. DAG size of input: 486 DAG size of output: 473 [2020-10-12 09:35:20,247 WARN L193 SmtUtils]: Spent 9.43 s on a formula simplification. DAG size of input: 312 DAG size of output: 311