/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/ldv-regression/test23-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:29:44,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:29:44,094 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:29:44,135 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:29:44,136 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:29:44,145 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:29:44,148 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:29:44,152 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:29:44,154 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:29:44,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:29:44,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:29:44,160 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:29:44,160 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:29:44,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:29:44,165 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:29:44,167 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:29:44,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:29:44,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:29:44,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:29:44,178 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:29:44,180 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:29:44,181 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:29:44,182 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:29:44,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:29:44,187 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:29:44,187 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:29:44,187 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:29:44,190 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:29:44,191 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:29:44,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:29:44,192 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:29:44,192 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:29:44,193 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:29:44,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:29:44,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:29:44,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:29:44,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:29:44,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:29:44,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:29:44,197 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:29:44,198 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:29:44,199 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 [2020-10-14 23:29:44,233 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:29:44,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:29:44,234 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:29:44,234 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:29:44,234 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:29:44,235 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:29:44,235 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:29:44,235 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:29:44,235 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:29:44,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:29:44,236 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:29:44,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:29:44,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:29:44,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:29:44,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:29:44,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:29:44,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:29:44,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:29:44,237 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:29:44,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:29:44,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:29:44,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:29:44,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:29:44,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:29:44,238 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:29:44,238 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:29:44,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:29:44,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:29:44,239 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:29:44,239 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:29:44,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:29:44,520 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:29:44,524 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:29:44,527 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:29:44,528 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:29:44,528 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test23-1.c [2020-10-14 23:29:44,596 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44dc961d0/227c99d762e646ec8c109dbc7e018c0f/FLAGe3efeb0e5 [2020-10-14 23:29:45,025 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:29:45,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test23-1.c [2020-10-14 23:29:45,032 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44dc961d0/227c99d762e646ec8c109dbc7e018c0f/FLAGe3efeb0e5 [2020-10-14 23:29:45,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44dc961d0/227c99d762e646ec8c109dbc7e018c0f [2020-10-14 23:29:45,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:29:45,433 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:29:45,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:29:45,437 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:29:45,441 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:29:45,442 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42d82a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45, skipping insertion in model container [2020-10-14 23:29:45,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:29:45,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:29:45,676 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:29:45,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:29:45,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:29:45,819 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:29:45,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45 WrapperNode [2020-10-14 23:29:45,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:29:45,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:29:45,820 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:29:45,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:29:45,833 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,834 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,851 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,856 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,860 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (1/1) ... [2020-10-14 23:29:45,865 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:29:45,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:29:45,866 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:29:45,866 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:29:45,867 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (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 [2020-10-14 23:29:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:29:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:29:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-10-14 23:29:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-10-14 23:29:45,924 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-10-14 23:29:45,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:29:45,925 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:29:45,926 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:29:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:29:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:29:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:29:45,927 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:29:46,231 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:29:46,232 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:29:46,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:29:46 BoogieIcfgContainer [2020-10-14 23:29:46,236 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:29:46,238 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:29:46,238 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:29:46,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:29:46,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:29:45" (1/3) ... [2020-10-14 23:29:46,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615d1293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:29:46, skipping insertion in model container [2020-10-14 23:29:46,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:29:45" (2/3) ... [2020-10-14 23:29:46,243 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615d1293 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:29:46, skipping insertion in model container [2020-10-14 23:29:46,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:29:46" (3/3) ... [2020-10-14 23:29:46,245 INFO L109 eAbstractionObserver]: Analyzing ICFG test23-1.c [2020-10-14 23:29:46,256 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:29:46,263 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:29:46,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:29:46,301 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:29:46,301 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:29:46,301 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:29:46,301 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:29:46,301 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:29:46,302 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:29:46,302 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:29:46,302 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:29:46,321 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-10-14 23:29:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-14 23:29:46,327 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:46,328 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:46,329 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:46,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:46,334 INFO L82 PathProgramCache]: Analyzing trace with hash -128514638, now seen corresponding path program 1 times [2020-10-14 23:29:46,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:46,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [584570053] [2020-10-14 23:29:46,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:46,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:46,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:46,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-14 23:29:46,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:46,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-14 23:29:46,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:46,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-14 23:29:46,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:46,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 23:29:46,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:46,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:46,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:46,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:46,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:46,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-14 23:29:46,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:46,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:46,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:46,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:46,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:47,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:47,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:29:47,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:47,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:47,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:47,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:47,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 23:29:47,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:29:47,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-14 23:29:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:47,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 23:29:47,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:47,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,091 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:47,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [584570053] [2020-10-14 23:29:47,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:29:47,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 23:29:47,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092347708] [2020-10-14 23:29:47,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 23:29:47,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:47,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 23:29:47,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:29:47,121 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 4 states. [2020-10-14 23:29:47,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:47,262 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-10-14 23:29:47,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:29:47,264 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-14 23:29:47,265 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:47,274 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:29:47,275 INFO L226 Difference]: Without dead ends: 28 [2020-10-14 23:29:47,278 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-14 23:29:47,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-14 23:29:47,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-14 23:29:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-14 23:29:47,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-14 23:29:47,329 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 30 [2020-10-14 23:29:47,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:47,331 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-14 23:29:47,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 23:29:47,331 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-14 23:29:47,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-14 23:29:47,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:47,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:47,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:29:47,335 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:47,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:47,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1246729484, now seen corresponding path program 1 times [2020-10-14 23:29:47,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:47,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [582551784] [2020-10-14 23:29:47,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-14 23:29:47,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 327 [2020-10-14 23:29:47,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-14 23:29:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:47,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-14 23:29:47,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:47,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:47,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:47,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:29:47,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:47,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:47,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:47,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:47,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:47,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:47,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,857 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:47,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:47,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:47,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-14 23:29:47,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:47,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:47,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:47,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:47,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:47,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:47,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:47,872 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:47,872 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [582551784] [2020-10-14 23:29:47,872 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:29:47,873 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 23:29:47,873 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702520071] [2020-10-14 23:29:47,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 23:29:47,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:47,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 23:29:47,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-14 23:29:47,876 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-10-14 23:29:47,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:47,990 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-10-14 23:29:47,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 23:29:47,990 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-10-14 23:29:47,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:47,992 INFO L225 Difference]: With dead ends: 38 [2020-10-14 23:29:47,992 INFO L226 Difference]: Without dead ends: 30 [2020-10-14 23:29:47,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:29:47,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-14 23:29:48,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-10-14 23:29:48,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-14 23:29:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-10-14 23:29:48,001 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 31 [2020-10-14 23:29:48,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:48,002 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-10-14 23:29:48,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 23:29:48,002 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-10-14 23:29:48,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-14 23:29:48,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:48,004 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:48,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:29:48,004 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:48,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:48,004 INFO L82 PathProgramCache]: Analyzing trace with hash 1472168143, now seen corresponding path program 1 times [2020-10-14 23:29:48,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:48,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26173175] [2020-10-14 23:29:48,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:48,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-14 23:29:48,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-14 23:29:48,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 23:29:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:48,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-14 23:29:48,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:48,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:48,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:29:48,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:48,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:48,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:48,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 23:29:48,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-14 23:29:48,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:48,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:29:48,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:48,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:48,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26173175] [2020-10-14 23:29:48,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:48,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 23:29:48,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753636943] [2020-10-14 23:29:48,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 23:29:48,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:48,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 23:29:48,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-14 23:29:48,410 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 7 states. [2020-10-14 23:29:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:48,588 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-10-14 23:29:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 23:29:48,588 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-14 23:29:48,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:48,589 INFO L225 Difference]: With dead ends: 40 [2020-10-14 23:29:48,590 INFO L226 Difference]: Without dead ends: 32 [2020-10-14 23:29:48,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:29:48,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-14 23:29:48,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-14 23:29:48,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-14 23:29:48,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-10-14 23:29:48,598 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 33 [2020-10-14 23:29:48,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:48,599 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-10-14 23:29:48,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 23:29:48,599 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-10-14 23:29:48,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-14 23:29:48,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:48,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:48,601 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 23:29:48,601 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:48,601 INFO L82 PathProgramCache]: Analyzing trace with hash -1302295574, now seen corresponding path program 2 times [2020-10-14 23:29:48,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:48,602 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216921082] [2020-10-14 23:29:48,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:48,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-14 23:29:48,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 23:29:48,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:29:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:48,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-14 23:29:48,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:48,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:48,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:29:48,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:48,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:48,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:48,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:48,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:48,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:48,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:48,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:48,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,901 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:48,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-14 23:29:48,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:48,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:48,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:48,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:48,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:48,916 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:48,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216921082] [2020-10-14 23:29:48,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:48,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 23:29:48,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479557952] [2020-10-14 23:29:48,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 23:29:48,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:48,918 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 23:29:48,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 23:29:48,918 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 8 states. [2020-10-14 23:29:49,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:49,087 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-10-14 23:29:49,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 23:29:49,088 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-14 23:29:49,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:49,089 INFO L225 Difference]: With dead ends: 42 [2020-10-14 23:29:49,089 INFO L226 Difference]: Without dead ends: 34 [2020-10-14 23:29:49,090 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:29:49,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-14 23:29:49,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-10-14 23:29:49,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-14 23:29:49,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2020-10-14 23:29:49,097 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 35 [2020-10-14 23:29:49,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:49,097 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2020-10-14 23:29:49,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 23:29:49,098 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2020-10-14 23:29:49,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-14 23:29:49,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:49,099 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:49,099 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 23:29:49,099 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:49,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:49,100 INFO L82 PathProgramCache]: Analyzing trace with hash -387236795, now seen corresponding path program 3 times [2020-10-14 23:29:49,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:49,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120826631] [2020-10-14 23:29:49,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:49,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-14 23:29:49,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-14 23:29:49,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 23:29:49,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:49,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-14 23:29:49,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:49,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:49,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:49,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:49,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:49,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:49,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:49,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:49,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:49,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:49,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:49,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:49,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-14 23:29:49,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:49,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:49,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:49,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:49,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:49,482 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:49,482 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120826631] [2020-10-14 23:29:49,483 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:49,483 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-14 23:29:49,483 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232153525] [2020-10-14 23:29:49,484 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-14 23:29:49,484 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:49,484 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-14 23:29:49,484 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-14 23:29:49,485 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 9 states. [2020-10-14 23:29:49,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:49,672 INFO L93 Difference]: Finished difference Result 44 states and 46 transitions. [2020-10-14 23:29:49,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 23:29:49,673 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-14 23:29:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:49,674 INFO L225 Difference]: With dead ends: 44 [2020-10-14 23:29:49,674 INFO L226 Difference]: Without dead ends: 36 [2020-10-14 23:29:49,674 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:29:49,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-14 23:29:49,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-14 23:29:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-14 23:29:49,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-10-14 23:29:49,681 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 37 [2020-10-14 23:29:49,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:49,682 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-10-14 23:29:49,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-14 23:29:49,682 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-10-14 23:29:49,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-14 23:29:49,683 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:49,683 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:49,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 23:29:49,684 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:49,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:49,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1484045856, now seen corresponding path program 4 times [2020-10-14 23:29:49,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:49,685 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195785062] [2020-10-14 23:29:49,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:49,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:49,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:49,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:49,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-14 23:29:49,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:49,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-14 23:29:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:49,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-14 23:29:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:49,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 23:29:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:50,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:50,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:50,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:50,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:50,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:50,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,073 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:50,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:50,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-14 23:29:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:50,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:50,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,098 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:50,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195785062] [2020-10-14 23:29:50,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:50,099 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-14 23:29:50,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990714443] [2020-10-14 23:29:50,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-14 23:29:50,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:50,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-14 23:29:50,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-14 23:29:50,101 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 10 states. [2020-10-14 23:29:50,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:50,302 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-10-14 23:29:50,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-14 23:29:50,303 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 39 [2020-10-14 23:29:50,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:50,304 INFO L225 Difference]: With dead ends: 46 [2020-10-14 23:29:50,304 INFO L226 Difference]: Without dead ends: 38 [2020-10-14 23:29:50,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=142, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:29:50,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-14 23:29:50,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-14 23:29:50,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-14 23:29:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-10-14 23:29:50,311 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 39 [2020-10-14 23:29:50,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:50,311 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-10-14 23:29:50,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-14 23:29:50,311 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-10-14 23:29:50,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-14 23:29:50,312 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:50,312 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:50,313 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 23:29:50,313 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:50,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:50,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1044401339, now seen corresponding path program 5 times [2020-10-14 23:29:50,313 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:50,314 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392410508] [2020-10-14 23:29:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-14 23:29:50,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-14 23:29:50,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 23:29:50,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:50,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-14 23:29:50,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:50,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:50,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:50,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:50,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:50,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:50,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:50,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:50,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:50,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-14 23:29:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:50,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:50,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:50,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:50,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:50,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:50,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:50,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:50,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:50,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:50,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:50,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392410508] [2020-10-14 23:29:50,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:50,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-14 23:29:50,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271322561] [2020-10-14 23:29:50,843 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-14 23:29:50,844 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:50,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-14 23:29:50,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-14 23:29:50,845 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 11 states. [2020-10-14 23:29:51,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:51,096 INFO L93 Difference]: Finished difference Result 48 states and 50 transitions. [2020-10-14 23:29:51,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-14 23:29:51,096 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 41 [2020-10-14 23:29:51,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:51,097 INFO L225 Difference]: With dead ends: 48 [2020-10-14 23:29:51,097 INFO L226 Difference]: Without dead ends: 40 [2020-10-14 23:29:51,098 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:29:51,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-14 23:29:51,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-10-14 23:29:51,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-14 23:29:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 42 transitions. [2020-10-14 23:29:51,104 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 42 transitions. Word has length 41 [2020-10-14 23:29:51,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:51,105 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 42 transitions. [2020-10-14 23:29:51,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-14 23:29:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 42 transitions. [2020-10-14 23:29:51,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-14 23:29:51,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:51,106 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:51,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 23:29:51,106 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:51,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:51,107 INFO L82 PathProgramCache]: Analyzing trace with hash -69333802, now seen corresponding path program 6 times [2020-10-14 23:29:51,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:51,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1115294766] [2020-10-14 23:29:51,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-14 23:29:51,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 331 [2020-10-14 23:29:51,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-14 23:29:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:51,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-14 23:29:51,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:51,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:51,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:51,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:51,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:51,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:51,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:51,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:51,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:51,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:51,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:51,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:51,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:51,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:51,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:51,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:51,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-14 23:29:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:51,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:51,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:51,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:51,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:51,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:51,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:51,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:51,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:51,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:51,637 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:51,637 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1115294766] [2020-10-14 23:29:51,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:51,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-14 23:29:51,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673179451] [2020-10-14 23:29:51,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-14 23:29:51,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:51,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-14 23:29:51,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 23:29:51,642 INFO L87 Difference]: Start difference. First operand 40 states and 42 transitions. Second operand 12 states. [2020-10-14 23:29:51,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:51,906 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-10-14 23:29:51,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-14 23:29:51,906 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-14 23:29:51,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:51,907 INFO L225 Difference]: With dead ends: 50 [2020-10-14 23:29:51,907 INFO L226 Difference]: Without dead ends: 42 [2020-10-14 23:29:51,908 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:29:51,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-14 23:29:51,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-14 23:29:51,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-14 23:29:51,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-10-14 23:29:51,913 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 43 [2020-10-14 23:29:51,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:51,914 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-10-14 23:29:51,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-14 23:29:51,914 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-10-14 23:29:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-14 23:29:51,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:51,915 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:51,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 23:29:51,915 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash -921947599, now seen corresponding path program 7 times [2020-10-14 23:29:51,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:51,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [263291372] [2020-10-14 23:29:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:51,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-14 23:29:52,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 279 [2020-10-14 23:29:52,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-14 23:29:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:52,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-14 23:29:52,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:52,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:52,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:52,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:52,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:52,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:52,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:52,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:52,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:52,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:52,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:52,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:52,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:52,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:52,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:52,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-14 23:29:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:52,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:52,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:52,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:52,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:52,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:52,379 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:52,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [263291372] [2020-10-14 23:29:52,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:52,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-14 23:29:52,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146377901] [2020-10-14 23:29:52,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-14 23:29:52,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:52,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-14 23:29:52,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-14 23:29:52,382 INFO L87 Difference]: Start difference. First operand 42 states and 44 transitions. Second operand 13 states. [2020-10-14 23:29:52,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:52,704 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2020-10-14 23:29:52,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-14 23:29:52,705 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 45 [2020-10-14 23:29:52,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:52,706 INFO L225 Difference]: With dead ends: 52 [2020-10-14 23:29:52,707 INFO L226 Difference]: Without dead ends: 44 [2020-10-14 23:29:52,707 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=280, Unknown=0, NotChecked=0, Total=420 [2020-10-14 23:29:52,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-14 23:29:52,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-14 23:29:52,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-14 23:29:52,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 46 transitions. [2020-10-14 23:29:52,714 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 46 transitions. Word has length 45 [2020-10-14 23:29:52,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:52,715 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 46 transitions. [2020-10-14 23:29:52,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-14 23:29:52,715 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 46 transitions. [2020-10-14 23:29:52,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-14 23:29:52,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:52,716 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:52,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 23:29:52,716 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:52,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:52,717 INFO L82 PathProgramCache]: Analyzing trace with hash 54947020, now seen corresponding path program 8 times [2020-10-14 23:29:52,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:52,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [917831954] [2020-10-14 23:29:52,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:52,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 23:29:53,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-14 23:29:53,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-14 23:29:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:53,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-14 23:29:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:53,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:53,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:53,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:53,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:53,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:53,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:53,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:53,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:53,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,211 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:53,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:53,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:53,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:53,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:53,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:53,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:53,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:53,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:53,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:53,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:53,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:53,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:53,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:53,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:53,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:53,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-14 23:29:53,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:53,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:53,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:53,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:53,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:53,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:53,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [917831954] [2020-10-14 23:29:53,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:53,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-14 23:29:53,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [759317783] [2020-10-14 23:29:53,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-14 23:29:53,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:53,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-14 23:29:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-14 23:29:53,245 INFO L87 Difference]: Start difference. First operand 44 states and 46 transitions. Second operand 14 states. [2020-10-14 23:29:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:53,505 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-10-14 23:29:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-14 23:29:53,505 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 47 [2020-10-14 23:29:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:53,506 INFO L225 Difference]: With dead ends: 54 [2020-10-14 23:29:53,506 INFO L226 Difference]: Without dead ends: 46 [2020-10-14 23:29:53,507 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=336, Unknown=0, NotChecked=0, Total=506 [2020-10-14 23:29:53,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-14 23:29:53,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-10-14 23:29:53,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-14 23:29:53,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2020-10-14 23:29:53,513 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 47 [2020-10-14 23:29:53,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:53,514 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2020-10-14 23:29:53,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-14 23:29:53,514 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2020-10-14 23:29:53,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-14 23:29:53,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:53,515 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:53,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 23:29:53,515 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:53,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:53,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1747161945, now seen corresponding path program 9 times [2020-10-14 23:29:53,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:53,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1753176723] [2020-10-14 23:29:53,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:53,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:53,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:53,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:53,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-14 23:29:53,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:53,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-14 23:29:53,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:53,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-14 23:29:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:53,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-14 23:29:53,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:54,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:54,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:54,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:54,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:54,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 23:29:54,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:54,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:54,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:54,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:54,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:54,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:54,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:54,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:54,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:54,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:54,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:54,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:54,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:54,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:54,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 23:29:54,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:54,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:54,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:54,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:54,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:54,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-14 23:29:54,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:54,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:54,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:54,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:54,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:54,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:54,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:54,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:54,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:54,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:54,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:54,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:54,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:54,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:54,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:54,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-14 23:29:54,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:54,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:54,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:54,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:54,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:54,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 23:29:54,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:54,102 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:54,103 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1753176723] [2020-10-14 23:29:54,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:54,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-14 23:29:54,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27088073] [2020-10-14 23:29:54,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-14 23:29:54,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:54,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-14 23:29:54,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-10-14 23:29:54,105 INFO L87 Difference]: Start difference. First operand 46 states and 48 transitions. Second operand 15 states. [2020-10-14 23:29:54,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:54,412 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2020-10-14 23:29:54,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-14 23:29:54,413 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 49 [2020-10-14 23:29:54,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:54,414 INFO L225 Difference]: With dead ends: 56 [2020-10-14 23:29:54,414 INFO L226 Difference]: Without dead ends: 48 [2020-10-14 23:29:54,415 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=203, Invalid=397, Unknown=0, NotChecked=0, Total=600 [2020-10-14 23:29:54,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-14 23:29:54,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-10-14 23:29:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-14 23:29:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 50 transitions. [2020-10-14 23:29:54,420 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 50 transitions. Word has length 49 [2020-10-14 23:29:54,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:54,420 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 50 transitions. [2020-10-14 23:29:54,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-14 23:29:54,421 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 50 transitions. [2020-10-14 23:29:54,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-14 23:29:54,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:54,422 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:54,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 23:29:54,422 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:54,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:54,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1592910274, now seen corresponding path program 10 times [2020-10-14 23:29:54,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:54,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [21613273] [2020-10-14 23:29:54,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:54,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:54,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:54,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:55,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:55,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-14 23:29:55,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 23:29:55,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1113 [2020-10-14 23:29:55,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:55,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-14 23:29:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-14 23:29:55,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-14 23:29:55,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:55,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:29:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:55,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:55,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:55,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:55,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:55,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 23:29:55,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:55,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:55,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:55,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:55,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:55,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:55,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-14 23:29:55,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:55,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:55,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:55,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:55,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:55,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:55,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:55,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:55,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:55,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:55,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-14 23:29:55,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:55,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:55,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:55,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:55,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:55,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:55,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:55,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:55,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:55,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:55,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:55,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-14 23:29:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:55,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:55,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:55,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-14 23:29:55,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:55,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 23:29:55,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:55,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:29:55,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:55,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:29:55,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:55,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-14 23:29:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:29:55,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:29:55,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:29:55,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:29:55,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:29:55,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 23:29:55,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:29:55,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:29:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-14 23:29:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:29:55,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-14 23:29:55,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:29:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 23:29:56,007 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [21613273] [2020-10-14 23:29:56,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 23:29:56,008 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-14 23:29:56,008 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632437454] [2020-10-14 23:29:56,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-14 23:29:56,009 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:29:56,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-14 23:29:56,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=240, Unknown=0, NotChecked=0, Total=272 [2020-10-14 23:29:56,010 INFO L87 Difference]: Start difference. First operand 48 states and 50 transitions. Second operand 17 states. [2020-10-14 23:29:56,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:29:56,588 INFO L93 Difference]: Finished difference Result 55 states and 58 transitions. [2020-10-14 23:29:56,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-14 23:29:56,589 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-10-14 23:29:56,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:29:56,590 INFO L225 Difference]: With dead ends: 55 [2020-10-14 23:29:56,591 INFO L226 Difference]: Without dead ends: 50 [2020-10-14 23:29:56,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-14 23:29:56,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-14 23:29:56,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-14 23:29:56,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-14 23:29:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 52 transitions. [2020-10-14 23:29:56,605 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 52 transitions. Word has length 51 [2020-10-14 23:29:56,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:29:56,606 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 52 transitions. [2020-10-14 23:29:56,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-14 23:29:56,607 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 52 transitions. [2020-10-14 23:29:56,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 23:29:56,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:29:56,611 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:29:56,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 23:29:56,611 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:29:56,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:29:56,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1233224675, now seen corresponding path program 11 times [2020-10-14 23:29:56,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:29:56,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671760340] [2020-10-14 23:29:56,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:29:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:29:56,656 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:29:56,656 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:29:56,662 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-14 23:29:56,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:29:56 BoogieIcfgContainer [2020-10-14 23:29:56,708 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:29:56,720 INFO L168 Benchmark]: Toolchain (without parser) took 11277.06 ms. Allocated memory was 141.6 MB in the beginning and 378.0 MB in the end (delta: 236.5 MB). Free memory was 103.7 MB in the beginning and 213.0 MB in the end (delta: -109.3 MB). Peak memory consumption was 127.2 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:56,722 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:29:56,724 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.60 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 183.6 MB in the end (delta: -80.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:56,725 INFO L168 Benchmark]: Boogie Preprocessor took 44.98 ms. Allocated memory is still 205.0 MB. Free memory was 183.6 MB in the beginning and 181.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:56,727 INFO L168 Benchmark]: RCFGBuilder took 370.65 ms. Allocated memory is still 205.0 MB. Free memory was 181.3 MB in the beginning and 163.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:56,732 INFO L168 Benchmark]: TraceAbstraction took 10470.11 ms. Allocated memory was 205.0 MB in the beginning and 378.0 MB in the end (delta: 173.0 MB). Free memory was 162.5 MB in the beginning and 213.0 MB in the end (delta: -50.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:29:56,738 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 122.0 MB in the beginning and 121.6 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.60 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 103.3 MB in the beginning and 183.6 MB in the end (delta: -80.3 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 44.98 ms. Allocated memory is still 205.0 MB. Free memory was 183.6 MB in the beginning and 181.3 MB in the end (delta: 2.3 MB). Peak memory consumption was 2.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 370.65 ms. Allocated memory is still 205.0 MB. Free memory was 181.3 MB in the beginning and 163.5 MB in the end (delta: 17.8 MB). Peak memory consumption was 17.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10470.11 ms. Allocated memory was 205.0 MB in the beginning and 378.0 MB in the end (delta: 173.0 MB). Free memory was 162.5 MB in the beginning and 213.0 MB in the end (delta: -50.5 MB). Peak memory consumption was 122.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 50]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L10] struct dummy d1, d2; [L33] CALL init() [L14] d1.a = __VERIFIER_nondet_int() [L15] d1.b = __VERIFIER_nondet_int() [L17] d2.a = __VERIFIER_nondet_int() [L18] d2.b = __VERIFIER_nondet_int() [L33] RET init() [L34] CALL, EXPR get_dummy() [L23] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L23] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] RET, EXPR get_dummy() [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L34] CALL, EXPR get_dummy() [L23] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L23] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L34] RET, EXPR get_dummy() [L34] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] int i = __VERIFIER_nondet_int(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 && i >= 0 && i < 10 [L37] pd2->array[i] = i [L38] int *pa = &pd1->array[i]; [L39] EXPR pd2->array[i] [L39] i = pd2->array[i] - 10 [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND TRUE i <= *pa [L41] ++i [L40] EXPR \read(*pa) [L40] COND FALSE !(i <= *pa) [L43] CALL, EXPR check(pd2, i) [L28] EXPR s1->array[i] [L28] return s1->array[i] == i; [L43] RET, EXPR check(pd2, i) [L43] COND TRUE !check(pd2, i) [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 10.3s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 281 SDtfs, 134 SDslu, 990 SDs, 0 SdLazy, 1738 SolverSat, 89 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 278 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 159 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 302 ImplicationChecksByTransitivity, 2.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=50occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 469 ConstructedInterpolants, 0 QuantifiedInterpolants, 84472 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 48/488 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...