/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/array-crafted/zero_sum_const4.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:23:19,136 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:23:19,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:23:19,179 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:23:19,180 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:23:19,181 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:23:19,183 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:23:19,185 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:23:19,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:23:19,189 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:23:19,190 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:23:19,191 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:23:19,192 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:23:19,193 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:23:19,194 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:23:19,196 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:23:19,197 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:23:19,198 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:23:19,200 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:23:19,202 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:23:19,204 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:23:19,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:23:19,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:23:19,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:23:19,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:23:19,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:23:19,230 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:23:19,233 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:23:19,234 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:23:19,235 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:23:19,235 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:23:19,237 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:23:19,239 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:23:19,240 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:23:19,241 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:23:19,241 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:23:19,242 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:23:19,242 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:23:19,243 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:23:19,244 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:23:19,246 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:23:19,247 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 [2020-10-29 03:23:19,297 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:23:19,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:23:19,301 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:23:19,301 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:23:19,301 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:23:19,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:23:19,302 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:23:19,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:23:19,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:23:19,303 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:23:19,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:23:19,304 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:23:19,304 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:23:19,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:23:19,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:23:19,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:23:19,305 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:23:19,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:23:19,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:23:19,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:23:19,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:23:19,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:23:19,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:23:19,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:23:19,307 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:23:19,307 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:23:19,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:23:19,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:23:19,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:23:19,308 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:23:19,700 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:23:19,740 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:23:19,743 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:23:19,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:23:19,745 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:23:19,745 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-crafted/zero_sum_const4.c [2020-10-29 03:23:19,828 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b10df49/58cf7c11e195461fbe4585555832ee5c/FLAG9165cd7ee [2020-10-29 03:23:20,434 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:23:20,434 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-crafted/zero_sum_const4.c [2020-10-29 03:23:20,442 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b10df49/58cf7c11e195461fbe4585555832ee5c/FLAG9165cd7ee [2020-10-29 03:23:20,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/44b10df49/58cf7c11e195461fbe4585555832ee5c [2020-10-29 03:23:20,813 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:23:20,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:23:20,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:23:20,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:23:20,832 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:23:20,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:23:20" (1/1) ... [2020-10-29 03:23:20,838 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@126d33ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:20, skipping insertion in model container [2020-10-29 03:23:20,838 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:23:20" (1/1) ... [2020-10-29 03:23:20,848 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:23:20,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:23:21,151 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:23:21,164 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:23:21,208 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:23:21,234 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:23:21,234 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21 WrapperNode [2020-10-29 03:23:21,235 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:23:21,236 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:23:21,236 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:23:21,236 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:23:21,249 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,249 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,258 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,258 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,268 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,277 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (1/1) ... [2020-10-29 03:23:21,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:23:21,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:23:21,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:23:21,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:23:21,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (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 [2020-10-29 03:23:21,348 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:23:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:23:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:23:21,349 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:23:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:23:21,350 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:23:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:23:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:23:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:23:21,350 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:23:21,351 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:23:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:23:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_long [2020-10-29 03:23:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 03:23:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:23:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 03:23:21,352 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:23:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:23:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:23:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:23:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:23:21,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:23:21,759 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:23:21,760 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-29 03:23:21,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:23:21 BoogieIcfgContainer [2020-10-29 03:23:21,762 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:23:21,764 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:23:21,764 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:23:21,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:23:21,768 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:23:20" (1/3) ... [2020-10-29 03:23:21,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216ed989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:23:21, skipping insertion in model container [2020-10-29 03:23:21,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:23:21" (2/3) ... [2020-10-29 03:23:21,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@216ed989 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:23:21, skipping insertion in model container [2020-10-29 03:23:21,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:23:21" (3/3) ... [2020-10-29 03:23:21,771 INFO L111 eAbstractionObserver]: Analyzing ICFG zero_sum_const4.c [2020-10-29 03:23:21,799 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:23:21,804 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:23:21,817 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:23:21,847 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:23:21,847 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:23:21,848 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:23:21,848 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:23:21,848 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:23:21,848 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:23:21,848 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:23:21,848 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:23:21,870 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-29 03:23:21,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:23:21,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:21,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:21,877 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:21,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:21,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1429331599, now seen corresponding path program 1 times [2020-10-29 03:23:21,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:21,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1880588342] [2020-10-29 03:23:21,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:22,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:22,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:22,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:23,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:26,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:23:26,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:23:26,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4162 [2020-10-29 03:23:26,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:26,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:26,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:23:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:26,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:23:26,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:23:26,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:26,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:26,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:26,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:26,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:26,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:23:26,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:26,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:26,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:26,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:23:26,427 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1880588342] [2020-10-29 03:23:26,429 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:23:26,429 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:23:26,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951774954] [2020-10-29 03:23:26,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:23:26,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:26,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:23:26,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:23:26,461 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 5 states. [2020-10-29 03:23:26,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:26,775 INFO L93 Difference]: Finished difference Result 109 states and 163 transitions. [2020-10-29 03:23:26,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:23:26,777 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-29 03:23:26,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:26,785 INFO L225 Difference]: With dead ends: 109 [2020-10-29 03:23:26,785 INFO L226 Difference]: Without dead ends: 57 [2020-10-29 03:23:26,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:23:26,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-29 03:23:26,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2020-10-29 03:23:26,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:23:26,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 56 transitions. [2020-10-29 03:23:26,835 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 56 transitions. Word has length 29 [2020-10-29 03:23:26,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:26,835 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 56 transitions. [2020-10-29 03:23:26,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:23:26,836 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 56 transitions. [2020-10-29 03:23:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-10-29 03:23:26,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:26,838 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:26,838 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:23:26,838 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:26,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:26,839 INFO L82 PathProgramCache]: Analyzing trace with hash 551314867, now seen corresponding path program 1 times [2020-10-29 03:23:26,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:26,840 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1161062994] [2020-10-29 03:23:26,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:26,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:26,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:27,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:30,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:31,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:31,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:23:31,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:23:31,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:23:31,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:31,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:23:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:31,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:23:31,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:31,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:31,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:31,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:31,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:31,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:31,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:23:31,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:31,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:31,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:31,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:23:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-29 03:23:31,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1161062994] [2020-10-29 03:23:31,970 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:31,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:23:31,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502984504] [2020-10-29 03:23:31,972 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:23:31,973 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:31,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:23:31,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:23:31,974 INFO L87 Difference]: Start difference. First operand 48 states and 56 transitions. Second operand 6 states. [2020-10-29 03:23:32,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:32,232 INFO L93 Difference]: Finished difference Result 104 states and 128 transitions. [2020-10-29 03:23:32,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:23:32,233 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 47 [2020-10-29 03:23:32,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:32,234 INFO L225 Difference]: With dead ends: 104 [2020-10-29 03:23:32,234 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:23:32,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:23:32,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:23:32,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 03:23:32,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:23:32,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-29 03:23:32,247 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 47 [2020-10-29 03:23:32,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:32,248 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-29 03:23:32,248 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:23:32,248 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-29 03:23:32,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:23:32,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:32,251 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:32,251 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:23:32,251 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:32,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:32,252 INFO L82 PathProgramCache]: Analyzing trace with hash 998541701, now seen corresponding path program 2 times [2020-10-29 03:23:32,252 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:32,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091654864] [2020-10-29 03:23:32,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:32,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:32,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:33,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:33,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:35,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:36,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:37,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:23:37,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:23:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-29 03:23:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:37,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:23:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 03:23:37,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 03:23:38,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:38,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:38,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:38,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:38,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:38,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:38,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:23:38,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:38,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:38,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:38,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:23:38,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091654864] [2020-10-29 03:23:38,161 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:38,161 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:23:38,161 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499099737] [2020-10-29 03:23:38,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:23:38,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:38,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:23:38,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:23:38,167 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 17 states. [2020-10-29 03:23:39,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:39,048 INFO L93 Difference]: Finished difference Result 116 states and 131 transitions. [2020-10-29 03:23:39,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:23:39,049 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 65 [2020-10-29 03:23:39,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:39,051 INFO L225 Difference]: With dead ends: 116 [2020-10-29 03:23:39,051 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:23:39,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 12 SyntacticMatches, 12 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=49, Invalid=293, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:23:39,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:23:39,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2020-10-29 03:23:39,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-29 03:23:39,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-10-29 03:23:39,068 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 65 [2020-10-29 03:23:39,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:39,068 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-10-29 03:23:39,068 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:23:39,069 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-10-29 03:23:39,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:23:39,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:39,071 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:39,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:23:39,072 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:39,072 INFO L82 PathProgramCache]: Analyzing trace with hash 817790087, now seen corresponding path program 3 times [2020-10-29 03:23:39,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:39,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1484909485] [2020-10-29 03:23:39,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:39,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:39,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:39,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:39,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:39,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:44,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:44,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:23:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:23:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:23:44,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:44,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-10-29 03:23:44,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:23:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:44,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:44,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:44,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:44,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:44,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:44,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:44,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:23:44,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:44,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:44,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:44,260 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:23:44,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1484909485] [2020-10-29 03:23:44,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:44,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:23:44,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593265868] [2020-10-29 03:23:44,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:23:44,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:44,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:23:44,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:23:44,263 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 10 states. [2020-10-29 03:23:45,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:45,021 INFO L93 Difference]: Finished difference Result 215 states and 251 transitions. [2020-10-29 03:23:45,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:23:45,021 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-29 03:23:45,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:45,023 INFO L225 Difference]: With dead ends: 215 [2020-10-29 03:23:45,023 INFO L226 Difference]: Without dead ends: 132 [2020-10-29 03:23:45,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=228, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:23:45,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-29 03:23:45,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 121. [2020-10-29 03:23:45,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-29 03:23:45,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 136 transitions. [2020-10-29 03:23:45,041 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 136 transitions. Word has length 67 [2020-10-29 03:23:45,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:45,042 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 136 transitions. [2020-10-29 03:23:45,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:23:45,042 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 136 transitions. [2020-10-29 03:23:45,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:23:45,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:45,044 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:45,044 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:23:45,044 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:45,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:45,045 INFO L82 PathProgramCache]: Analyzing trace with hash -1125657145, now seen corresponding path program 4 times [2020-10-29 03:23:45,045 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:45,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2098090507] [2020-10-29 03:23:45,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:45,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:45,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:45,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:45,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:45,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:45,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:50,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:50,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 03:23:50,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:23:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:23:50,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:50,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:50,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:23:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-29 03:23:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:50,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:50,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:50,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:50,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:50,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:50,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:50,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:23:50,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:50,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:50,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:50,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:50,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:50,224 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:23:50,225 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2098090507] [2020-10-29 03:23:50,225 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:50,225 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:23:50,226 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892284172] [2020-10-29 03:23:50,227 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:23:50,227 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:50,228 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:23:50,228 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:23:50,228 INFO L87 Difference]: Start difference. First operand 121 states and 136 transitions. Second operand 10 states. [2020-10-29 03:23:50,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:50,694 INFO L93 Difference]: Finished difference Result 205 states and 228 transitions. [2020-10-29 03:23:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:23:50,694 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-10-29 03:23:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:50,695 INFO L225 Difference]: With dead ends: 205 [2020-10-29 03:23:50,696 INFO L226 Difference]: Without dead ends: 93 [2020-10-29 03:23:50,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:23:50,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-29 03:23:50,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 84. [2020-10-29 03:23:50,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:23:50,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 92 transitions. [2020-10-29 03:23:50,708 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 92 transitions. Word has length 67 [2020-10-29 03:23:50,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:50,708 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 92 transitions. [2020-10-29 03:23:50,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:23:50,708 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 92 transitions. [2020-10-29 03:23:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:23:50,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:50,712 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:50,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:23:50,713 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:50,713 INFO L82 PathProgramCache]: Analyzing trace with hash 854432983, now seen corresponding path program 5 times [2020-10-29 03:23:50,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:50,714 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250551219] [2020-10-29 03:23:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:50,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:50,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:52,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:56,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:56,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-29 03:23:56,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:23:56,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5448 [2020-10-29 03:23:56,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:56,248 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 52 [2020-10-29 03:23:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:23:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 03:23:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:57,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:23:57,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:57,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:23:57,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:23:57,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:23:57,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:23:57,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:23:57,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:23:57,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:23:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:23:57,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:23:57,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:23:57,755 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-29 03:23:57,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1250551219] [2020-10-29 03:23:57,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:23:57,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:23:57,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500597806] [2020-10-29 03:23:57,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:23:57,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:23:57,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:23:57,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:23:57,758 INFO L87 Difference]: Start difference. First operand 84 states and 92 transitions. Second operand 21 states. [2020-10-29 03:23:59,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:23:59,090 INFO L93 Difference]: Finished difference Result 148 states and 163 transitions. [2020-10-29 03:23:59,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:23:59,091 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 83 [2020-10-29 03:23:59,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:23:59,093 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:23:59,093 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:23:59,097 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 7 SyntacticMatches, 29 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:23:59,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:23:59,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 137. [2020-10-29 03:23:59,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:23:59,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 152 transitions. [2020-10-29 03:23:59,127 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 152 transitions. Word has length 83 [2020-10-29 03:23:59,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:23:59,128 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 152 transitions. [2020-10-29 03:23:59,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:23:59,128 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 152 transitions. [2020-10-29 03:23:59,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:23:59,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:23:59,131 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:23:59,131 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:23:59,131 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:23:59,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:23:59,133 INFO L82 PathProgramCache]: Analyzing trace with hash 356250457, now seen corresponding path program 6 times [2020-10-29 03:23:59,134 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:23:59,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908232635] [2020-10-29 03:23:59,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:23:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:23:59,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:59,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:59,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:59,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:23:59,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:00,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:04,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:04,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:24:04,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:24:04,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:24:04,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:04,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:24:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 03:24:04,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:24:04,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:04,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:04,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:04,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:04,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:04,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:04,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:04,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:04,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:04,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:04,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:04,319 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 9 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-29 03:24:04,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908232635] [2020-10-29 03:24:04,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:04,320 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:24:04,320 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736238469] [2020-10-29 03:24:04,321 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:24:04,321 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:04,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:24:04,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:24:04,323 INFO L87 Difference]: Start difference. First operand 137 states and 152 transitions. Second operand 12 states. [2020-10-29 03:24:05,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:05,055 INFO L93 Difference]: Finished difference Result 293 states and 329 transitions. [2020-10-29 03:24:05,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:24:05,056 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 85 [2020-10-29 03:24:05,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:05,057 INFO L225 Difference]: With dead ends: 293 [2020-10-29 03:24:05,057 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:24:05,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:24:05,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:24:05,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 148. [2020-10-29 03:24:05,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-29 03:24:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 162 transitions. [2020-10-29 03:24:05,082 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 162 transitions. Word has length 85 [2020-10-29 03:24:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:05,083 INFO L481 AbstractCegarLoop]: Abstraction has 148 states and 162 transitions. [2020-10-29 03:24:05,083 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:24:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 162 transitions. [2020-10-29 03:24:05,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:24:05,094 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:05,095 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:05,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:24:05,096 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:05,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:05,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1857210341, now seen corresponding path program 7 times [2020-10-29 03:24:05,097 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:05,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861168812] [2020-10-29 03:24:05,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:05,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:05,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:05,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:06,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:06,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:09,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:10,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:24:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:24:10,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:10,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:10,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:10,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:10,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:10,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:10,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:10,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:10,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:10,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:10,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:10,254 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 9 proven. 16 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-10-29 03:24:10,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861168812] [2020-10-29 03:24:10,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:10,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:24:10,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682722659] [2020-10-29 03:24:10,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:24:10,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:10,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:24:10,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:24:10,257 INFO L87 Difference]: Start difference. First operand 148 states and 162 transitions. Second operand 12 states. [2020-10-29 03:24:10,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:10,850 INFO L93 Difference]: Finished difference Result 156 states and 170 transitions. [2020-10-29 03:24:10,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:24:10,850 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-10-29 03:24:10,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:10,854 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:24:10,854 INFO L226 Difference]: Without dead ends: 102 [2020-10-29 03:24:10,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=102, Invalid=318, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:24:10,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-29 03:24:10,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2020-10-29 03:24:10,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-29 03:24:10,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 110 transitions. [2020-10-29 03:24:10,871 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 110 transitions. Word has length 87 [2020-10-29 03:24:10,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:10,871 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 110 transitions. [2020-10-29 03:24:10,871 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:24:10,871 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 110 transitions. [2020-10-29 03:24:10,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 03:24:10,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:10,873 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:10,873 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:24:10,873 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:10,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:10,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1021657175, now seen corresponding path program 8 times [2020-10-29 03:24:10,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:10,874 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035621725] [2020-10-29 03:24:10,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:10,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:11,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:16,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:24:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-29 03:24:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:16,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 68 [2020-10-29 03:24:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:24:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 03:24:16,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:18,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:18,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:18,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:18,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:18,171 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-29 03:24:18,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035621725] [2020-10-29 03:24:18,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:18,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:24:18,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070528345] [2020-10-29 03:24:18,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:24:18,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:18,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:24:18,175 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=977, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:24:18,175 INFO L87 Difference]: Start difference. First operand 102 states and 110 transitions. Second operand 33 states. [2020-10-29 03:24:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:20,079 INFO L93 Difference]: Finished difference Result 180 states and 195 transitions. [2020-10-29 03:24:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:24:20,079 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 101 [2020-10-29 03:24:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:20,082 INFO L225 Difference]: With dead ends: 180 [2020-10-29 03:24:20,082 INFO L226 Difference]: Without dead ends: 174 [2020-10-29 03:24:20,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 12 SyntacticMatches, 28 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=89, Invalid=1101, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:24:20,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-29 03:24:20,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 167. [2020-10-29 03:24:20,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-29 03:24:20,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2020-10-29 03:24:20,100 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 101 [2020-10-29 03:24:20,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:20,100 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2020-10-29 03:24:20,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:24:20,101 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2020-10-29 03:24:20,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:24:20,102 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:20,102 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:20,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:24:20,102 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:20,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:20,103 INFO L82 PathProgramCache]: Analyzing trace with hash 299604395, now seen corresponding path program 9 times [2020-10-29 03:24:20,103 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:20,103 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373428164] [2020-10-29 03:24:20,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:20,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:20,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:20,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:25,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:25,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:24:25,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:25,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:24:25,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:25,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-10-29 03:24:25,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:24:25,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:25,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:25,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:25,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:25,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:25,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:25,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:25,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:25,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:25,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:25,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:25,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:24:25,270 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 25 proven. 16 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-10-29 03:24:25,271 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373428164] [2020-10-29 03:24:25,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:25,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:24:25,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658593305] [2020-10-29 03:24:25,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:24:25,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:25,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:24:25,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:24:25,273 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand 14 states. [2020-10-29 03:24:26,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:26,137 INFO L93 Difference]: Finished difference Result 353 states and 389 transitions. [2020-10-29 03:24:26,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:24:26,137 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 103 [2020-10-29 03:24:26,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:26,138 INFO L225 Difference]: With dead ends: 353 [2020-10-29 03:24:26,138 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 03:24:26,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:24:26,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 03:24:26,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 178. [2020-10-29 03:24:26,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-29 03:24:26,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 192 transitions. [2020-10-29 03:24:26,156 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 192 transitions. Word has length 103 [2020-10-29 03:24:26,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:26,156 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 192 transitions. [2020-10-29 03:24:26,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:24:26,157 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 192 transitions. [2020-10-29 03:24:26,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-29 03:24:26,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:26,158 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:26,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:24:26,158 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:26,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:26,159 INFO L82 PathProgramCache]: Analyzing trace with hash -2052283923, now seen corresponding path program 10 times [2020-10-29 03:24:26,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:26,159 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449526371] [2020-10-29 03:24:26,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:26,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:26,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:26,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:31,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:24:31,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:31,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:31,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:31,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:31,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:31,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:31,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:31,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:31,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:31,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:31,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:31,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-29 03:24:31,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449526371] [2020-10-29 03:24:31,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:31,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:24:31,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651113988] [2020-10-29 03:24:31,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:24:31,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:31,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:24:31,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:24:31,333 INFO L87 Difference]: Start difference. First operand 178 states and 192 transitions. Second operand 14 states. [2020-10-29 03:24:32,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:32,055 INFO L93 Difference]: Finished difference Result 186 states and 200 transitions. [2020-10-29 03:24:32,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:24:32,055 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 105 [2020-10-29 03:24:32,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:32,057 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:24:32,057 INFO L226 Difference]: Without dead ends: 120 [2020-10-29 03:24:32,058 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=142, Invalid=458, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:24:32,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-29 03:24:32,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 120. [2020-10-29 03:24:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-10-29 03:24:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2020-10-29 03:24:32,069 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 105 [2020-10-29 03:24:32,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:32,070 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2020-10-29 03:24:32,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:24:32,070 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2020-10-29 03:24:32,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 03:24:32,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:32,071 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:32,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:24:32,071 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:32,072 INFO L82 PathProgramCache]: Analyzing trace with hash 629608955, now seen corresponding path program 11 times [2020-10-29 03:24:32,072 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:32,072 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1833614478] [2020-10-29 03:24:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:32,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:34,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:37,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:37,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 03:24:37,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:24:37,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 03:24:37,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:37,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 84 [2020-10-29 03:24:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:24:37,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 03:24:37,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:40,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:40,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:40,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:40,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:40,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:40,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:40,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:40,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:40,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:40,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:40,331 INFO L134 CoverageAnalysis]: Checked inductivity of 225 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-29 03:24:40,331 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1833614478] [2020-10-29 03:24:40,331 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:40,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:24:40,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979375729] [2020-10-29 03:24:40,332 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:24:40,332 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:40,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:24:40,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=1245, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:24:40,334 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 37 states. [2020-10-29 03:24:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:43,780 INFO L93 Difference]: Finished difference Result 212 states and 227 transitions. [2020-10-29 03:24:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:24:43,781 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 119 [2020-10-29 03:24:43,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:43,783 INFO L225 Difference]: With dead ends: 212 [2020-10-29 03:24:43,783 INFO L226 Difference]: Without dead ends: 206 [2020-10-29 03:24:43,784 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 7 SyntacticMatches, 45 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=97, Invalid=1385, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:24:43,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-29 03:24:43,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 197. [2020-10-29 03:24:43,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 03:24:43,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 212 transitions. [2020-10-29 03:24:43,800 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 212 transitions. Word has length 119 [2020-10-29 03:24:43,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:43,800 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 212 transitions. [2020-10-29 03:24:43,800 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:24:43,801 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 212 transitions. [2020-10-29 03:24:43,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:24:43,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:43,802 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:43,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:24:43,803 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:43,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:43,803 INFO L82 PathProgramCache]: Analyzing trace with hash -1093628035, now seen corresponding path program 12 times [2020-10-29 03:24:43,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:43,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [324263201] [2020-10-29 03:24:43,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:43,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:43,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:43,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:43,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:43,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:48,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:48,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:24:48,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:48,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:24:48,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:48,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:24:48,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-29 03:24:48,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:48,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:48,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:49,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:49,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:49,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:49,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:24:49,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:49,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:49,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:49,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:49,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:49,018 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 36 proven. 25 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-10-29 03:24:49,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [324263201] [2020-10-29 03:24:49,019 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:49,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:24:49,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856426898] [2020-10-29 03:24:49,020 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:24:49,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:49,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:24:49,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:24:49,021 INFO L87 Difference]: Start difference. First operand 197 states and 212 transitions. Second operand 16 states. [2020-10-29 03:24:50,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:50,051 INFO L93 Difference]: Finished difference Result 413 states and 449 transitions. [2020-10-29 03:24:50,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:24:50,052 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 121 [2020-10-29 03:24:50,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:50,054 INFO L225 Difference]: With dead ends: 413 [2020-10-29 03:24:50,054 INFO L226 Difference]: Without dead ends: 225 [2020-10-29 03:24:50,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=383, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:24:50,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2020-10-29 03:24:50,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 208. [2020-10-29 03:24:50,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-29 03:24:50,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 222 transitions. [2020-10-29 03:24:50,071 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 222 transitions. Word has length 121 [2020-10-29 03:24:50,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:50,071 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 222 transitions. [2020-10-29 03:24:50,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:24:50,071 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 222 transitions. [2020-10-29 03:24:50,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-29 03:24:50,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:50,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:50,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:24:50,074 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:50,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:50,074 INFO L82 PathProgramCache]: Analyzing trace with hash 549944127, now seen corresponding path program 13 times [2020-10-29 03:24:50,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:50,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588550399] [2020-10-29 03:24:50,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:50,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:50,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:50,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:55,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:24:55,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:55,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:24:55,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:55,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:55,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:24:55,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:24:55,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:24:55,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:24:55,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:24:55,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:24:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:24:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:24:55,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:24:55,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:24:55,305 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 25 proven. 36 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2020-10-29 03:24:55,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588550399] [2020-10-29 03:24:55,305 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:24:55,305 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:24:55,305 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927427320] [2020-10-29 03:24:55,306 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:24:55,306 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:24:55,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:24:55,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=181, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:24:55,307 INFO L87 Difference]: Start difference. First operand 208 states and 222 transitions. Second operand 16 states. [2020-10-29 03:24:56,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:24:56,249 INFO L93 Difference]: Finished difference Result 216 states and 230 transitions. [2020-10-29 03:24:56,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:24:56,250 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-10-29 03:24:56,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:24:56,252 INFO L225 Difference]: With dead ends: 216 [2020-10-29 03:24:56,252 INFO L226 Difference]: Without dead ends: 138 [2020-10-29 03:24:56,253 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=189, Invalid=623, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:24:56,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-29 03:24:56,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 138. [2020-10-29 03:24:56,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 138 states. [2020-10-29 03:24:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 138 states to 138 states and 146 transitions. [2020-10-29 03:24:56,265 INFO L78 Accepts]: Start accepts. Automaton has 138 states and 146 transitions. Word has length 123 [2020-10-29 03:24:56,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:24:56,265 INFO L481 AbstractCegarLoop]: Abstraction has 138 states and 146 transitions. [2020-10-29 03:24:56,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:24:56,265 INFO L276 IsEmpty]: Start isEmpty. Operand 138 states and 146 transitions. [2020-10-29 03:24:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 03:24:56,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:24:56,266 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:24:56,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:24:56,267 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:24:56,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:24:56,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1557810227, now seen corresponding path program 14 times [2020-10-29 03:24:56,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:24:56,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1042905541] [2020-10-29 03:24:56,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:24:56,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:24:56,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:24:59,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:01,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:01,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-29 03:25:01,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:25:01,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5609 [2020-10-29 03:25:01,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:01,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 100 [2020-10-29 03:25:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:25:01,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 03:25:01,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:06,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:06,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:06,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:06,904 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-10-29 03:25:06,905 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1042905541] [2020-10-29 03:25:06,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:06,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [42] total 42 [2020-10-29 03:25:06,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323367561] [2020-10-29 03:25:06,906 INFO L461 AbstractCegarLoop]: Interpolant automaton has 42 states [2020-10-29 03:25:06,906 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:06,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2020-10-29 03:25:06,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=1622, Unknown=0, NotChecked=0, Total=1722 [2020-10-29 03:25:06,907 INFO L87 Difference]: Start difference. First operand 138 states and 146 transitions. Second operand 42 states. [2020-10-29 03:25:11,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:11,181 INFO L93 Difference]: Finished difference Result 244 states and 259 transitions. [2020-10-29 03:25:11,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:25:11,182 INFO L78 Accepts]: Start accepts. Automaton has 42 states. Word has length 137 [2020-10-29 03:25:11,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:11,185 INFO L225 Difference]: With dead ends: 244 [2020-10-29 03:25:11,185 INFO L226 Difference]: Without dead ends: 238 [2020-10-29 03:25:11,186 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 9 SyntacticMatches, 54 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=110, Invalid=1782, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:25:11,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-29 03:25:11,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 227. [2020-10-29 03:25:11,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 227 states. [2020-10-29 03:25:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 227 states to 227 states and 242 transitions. [2020-10-29 03:25:11,209 INFO L78 Accepts]: Start accepts. Automaton has 227 states and 242 transitions. Word has length 137 [2020-10-29 03:25:11,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:11,209 INFO L481 AbstractCegarLoop]: Abstraction has 227 states and 242 transitions. [2020-10-29 03:25:11,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 42 states. [2020-10-29 03:25:11,209 INFO L276 IsEmpty]: Start isEmpty. Operand 227 states and 242 transitions. [2020-10-29 03:25:11,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:25:11,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:11,210 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:11,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:25:11,211 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:11,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:11,211 INFO L82 PathProgramCache]: Analyzing trace with hash 96859343, now seen corresponding path program 15 times [2020-10-29 03:25:11,211 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:11,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1014190855] [2020-10-29 03:25:11,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:11,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:11,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:11,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:11,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:16,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 03:25:16,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 03:25:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:16,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:16,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:16,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:16,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:16,484 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 36 proven. 49 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 03:25:16,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1014190855] [2020-10-29 03:25:16,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:16,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:25:16,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971514306] [2020-10-29 03:25:16,485 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:25:16,485 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:25:16,486 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:25:16,486 INFO L87 Difference]: Start difference. First operand 227 states and 242 transitions. Second operand 18 states. [2020-10-29 03:25:18,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:18,191 INFO L93 Difference]: Finished difference Result 447 states and 483 transitions. [2020-10-29 03:25:18,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:25:18,191 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 139 [2020-10-29 03:25:18,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:18,194 INFO L225 Difference]: With dead ends: 447 [2020-10-29 03:25:18,194 INFO L226 Difference]: Without dead ends: 268 [2020-10-29 03:25:18,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=260, Invalid=862, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:25:18,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-29 03:25:18,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 241. [2020-10-29 03:25:18,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2020-10-29 03:25:18,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 256 transitions. [2020-10-29 03:25:18,219 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 256 transitions. Word has length 139 [2020-10-29 03:25:18,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:18,219 INFO L481 AbstractCegarLoop]: Abstraction has 241 states and 256 transitions. [2020-10-29 03:25:18,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:25:18,219 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 256 transitions. [2020-10-29 03:25:18,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:25:18,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:18,221 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:18,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:25:18,221 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:18,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:18,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1058566641, now seen corresponding path program 16 times [2020-10-29 03:25:18,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:18,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1348814830] [2020-10-29 03:25:18,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:18,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:18,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:21,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:23,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:23,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-29 03:25:23,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:23,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:23,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:23,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:23,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:23,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:23,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:23,530 INFO L134 CoverageAnalysis]: Checked inductivity of 337 backedges. 49 proven. 36 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2020-10-29 03:25:23,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1348814830] [2020-10-29 03:25:23,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:23,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:25:23,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888261829] [2020-10-29 03:25:23,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:25:23,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:23,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:25:23,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=231, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:25:23,532 INFO L87 Difference]: Start difference. First operand 241 states and 256 transitions. Second operand 18 states. [2020-10-29 03:25:24,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:25:24,734 INFO L93 Difference]: Finished difference Result 397 states and 420 transitions. [2020-10-29 03:25:24,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:25:24,736 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 139 [2020-10-29 03:25:24,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:25:24,737 INFO L225 Difference]: With dead ends: 397 [2020-10-29 03:25:24,738 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:25:24,738 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=494, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:25:24,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:25:24,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 156. [2020-10-29 03:25:24,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-29 03:25:24,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 164 transitions. [2020-10-29 03:25:24,751 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 164 transitions. Word has length 139 [2020-10-29 03:25:24,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:25:24,751 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 164 transitions. [2020-10-29 03:25:24,751 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:25:24,752 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 164 transitions. [2020-10-29 03:25:24,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2020-10-29 03:25:24,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:25:24,753 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:25:24,753 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:25:24,753 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:25:24,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:25:24,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1503541985, now seen corresponding path program 17 times [2020-10-29 03:25:24,754 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:25:24,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826738517] [2020-10-29 03:25:24,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:25:24,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:25,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:30,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:30,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 03:25:30,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5220 [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 126 [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 03:25:30,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:32,300 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 44 [2020-10-29 03:25:32,471 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 41 [2020-10-29 03:25:32,858 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 47 [2020-10-29 03:25:33,067 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-29 03:25:33,276 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 44 [2020-10-29 03:25:33,499 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 49 [2020-10-29 03:25:33,726 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 48 [2020-10-29 03:25:33,941 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 44 [2020-10-29 03:25:34,170 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-29 03:25:34,395 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 44 [2020-10-29 03:25:34,630 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 46 [2020-10-29 03:25:34,877 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 49 [2020-10-29 03:25:35,195 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 42 [2020-10-29 03:25:35,445 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 44 [2020-10-29 03:25:35,709 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 47 [2020-10-29 03:25:39,830 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 36 [2020-10-29 03:25:40,070 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 39 [2020-10-29 03:25:40,316 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 32 [2020-10-29 03:25:40,569 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 35 [2020-10-29 03:25:41,338 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-10-29 03:25:53,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:25:53,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:25:53,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:25:53,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:25:53,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:25:53,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:25:53,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:25:53,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:25:53,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:25:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:25:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:25:53,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:25:53,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:25:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 441 backedges. 36 proven. 405 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:25:53,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1826738517] [2020-10-29 03:25:53,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:25:53,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [122] total 122 [2020-10-29 03:25:53,509 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262305846] [2020-10-29 03:25:53,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 122 states [2020-10-29 03:25:53,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:25:53,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2020-10-29 03:25:53,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=776, Invalid=13986, Unknown=0, NotChecked=0, Total=14762 [2020-10-29 03:25:53,514 INFO L87 Difference]: Start difference. First operand 156 states and 164 transitions. Second operand 122 states. [2020-10-29 03:25:54,014 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 68 [2020-10-29 03:25:56,223 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 61 [2020-10-29 03:25:56,947 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 56 [2020-10-29 03:25:57,316 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 59 [2020-10-29 03:25:58,509 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 54 [2020-10-29 03:25:59,774 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 56 [2020-10-29 03:26:01,133 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 58 [2020-10-29 03:26:02,551 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 59 [2020-10-29 03:26:03,906 WARN L193 SmtUtils]: Spent 505.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 108 [2020-10-29 03:26:04,919 WARN L193 SmtUtils]: Spent 468.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 107 [2020-10-29 03:26:05,908 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 86 [2020-10-29 03:26:07,581 WARN L193 SmtUtils]: Spent 545.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 104 [2020-10-29 03:26:07,929 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 58 [2020-10-29 03:26:08,991 WARN L193 SmtUtils]: Spent 395.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 93 [2020-10-29 03:26:10,244 WARN L193 SmtUtils]: Spent 385.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 82 [2020-10-29 03:26:11,483 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 102 [2020-10-29 03:26:12,684 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 59 [2020-10-29 03:26:13,622 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 81 [2020-10-29 03:26:14,681 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 169 DAG size of output: 42 [2020-10-29 03:26:15,597 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 93 [2020-10-29 03:26:16,219 WARN L193 SmtUtils]: Spent 235.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 65 [2020-10-29 03:26:17,020 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 157 DAG size of output: 41 [2020-10-29 03:26:18,002 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 44 [2020-10-29 03:26:19,203 WARN L193 SmtUtils]: Spent 237.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 52 [2020-10-29 03:26:20,155 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 49 [2020-10-29 03:26:21,327 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 39 [2020-10-29 03:26:22,148 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 150 DAG size of output: 30 [2020-10-29 03:26:23,236 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 48 [2020-10-29 03:26:24,110 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 52 [2020-10-29 03:26:25,171 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 143 DAG size of output: 39 [2020-10-29 03:26:25,890 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 23 [2020-10-29 03:26:26,836 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 145 DAG size of output: 45 [2020-10-29 03:26:27,725 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 65 [2020-10-29 03:26:28,829 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 61 [2020-10-29 03:26:30,178 WARN L193 SmtUtils]: Spent 451.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 56 [2020-10-29 03:26:31,778 WARN L193 SmtUtils]: Spent 535.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 75 [2020-10-29 03:26:33,404 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 49 [2020-10-29 03:26:37,237 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 176 DAG size of output: 42 [2020-10-29 03:26:38,684 WARN L193 SmtUtils]: Spent 616.00 ms on a formula simplification. DAG size of input: 175 DAG size of output: 89