/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-examples/standard_init6_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:42:00,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:42:00,176 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:42:00,232 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:42:00,233 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:42:00,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:42:00,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:42:00,246 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:42:00,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:42:00,256 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:42:00,257 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:42:00,259 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:42:00,259 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:42:00,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:42:00,265 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:42:00,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:42:00,268 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:42:00,271 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:42:00,278 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:42:00,287 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:42:00,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:42:00,293 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:42:00,294 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:42:00,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:42:00,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:42:00,314 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:42:00,315 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:42:00,318 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:42:00,320 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:42:00,322 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:42:00,322 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:42:00,323 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:42:00,325 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:42:00,326 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:42:00,327 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:42:00,327 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:42:00,328 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:42:00,328 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:42:00,328 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:42:00,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:42:00,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:42:00,338 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 03:42:00,383 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:42:00,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:42:00,385 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:42:00,385 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:42:00,386 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:42:00,386 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:42:00,386 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:42:00,386 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:42:00,386 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:42:00,387 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:42:00,387 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:42:00,387 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:42:00,387 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:42:00,387 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:42:00,387 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:42:00,388 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:42:00,388 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:42:00,388 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:42:00,388 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:42:00,388 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:42:00,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:42:00,389 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:42:00,389 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:42:00,389 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:42:00,389 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:42:00,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:42:00,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:42:00,390 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:42:00,390 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:42:00,390 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:42:00,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:42:00,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:42:00,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:42:00,821 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:42:00,822 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:42:00,823 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_init6_ground-1.i [2020-10-29 03:42:00,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a109c70b1/a1bb72e3b6544b2db2b051f8ebd5493c/FLAGb831170e3 [2020-10-29 03:42:01,681 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:42:01,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_init6_ground-1.i [2020-10-29 03:42:01,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a109c70b1/a1bb72e3b6544b2db2b051f8ebd5493c/FLAGb831170e3 [2020-10-29 03:42:01,998 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a109c70b1/a1bb72e3b6544b2db2b051f8ebd5493c [2020-10-29 03:42:02,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:42:02,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:42:02,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:02,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:42:02,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:42:02,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:01" (1/1) ... [2020-10-29 03:42:02,020 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3696304c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02, skipping insertion in model container [2020-10-29 03:42:02,021 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:42:01" (1/1) ... [2020-10-29 03:42:02,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:42:02,048 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:42:02,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:02,234 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:42:02,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:42:02,277 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:42:02,277 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02 WrapperNode [2020-10-29 03:42:02,277 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:42:02,279 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:42:02,279 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:42:02,279 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:42:02,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,308 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,318 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (1/1) ... [2020-10-29 03:42:02,320 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:42:02,322 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:42:02,322 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:42:02,322 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:42:02,323 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (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 03:42:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:42:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:42:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:42:02,405 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:42:02,406 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:42:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:42:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:42:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 03:42:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 03:42:02,406 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:42:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:42:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:42:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:42:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:42:02,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:42:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:42:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:42:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:42:02,408 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:42:03,080 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:42:03,081 INFO L298 CfgBuilder]: Removed 7 assume(true) statements. [2020-10-29 03:42:03,083 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:03 BoogieIcfgContainer [2020-10-29 03:42:03,084 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:42:03,087 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:42:03,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:42:03,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:42:03,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:42:01" (1/3) ... [2020-10-29 03:42:03,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3525ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:03, skipping insertion in model container [2020-10-29 03:42:03,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:42:02" (2/3) ... [2020-10-29 03:42:03,105 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d3525ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:42:03, skipping insertion in model container [2020-10-29 03:42:03,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:42:03" (3/3) ... [2020-10-29 03:42:03,108 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-1.i [2020-10-29 03:42:03,122 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:42:03,130 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:42:03,148 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:42:03,191 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:42:03,192 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:42:03,192 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:42:03,192 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:42:03,192 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:42:03,193 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:42:03,193 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:42:03,193 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:42:03,215 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-10-29 03:42:03,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 03:42:03,226 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:03,227 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] [2020-10-29 03:42:03,227 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:03,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:03,239 INFO L82 PathProgramCache]: Analyzing trace with hash 214825398, now seen corresponding path program 1 times [2020-10-29 03:42:03,249 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:03,250 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1920918117] [2020-10-29 03:42:03,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:03,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:03,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:03,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:04,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:04,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 03:42:04,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:42:04,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1442 [2020-10-29 03:42:04,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:04,830 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:42:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:42:04,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:42:04,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 03:42:04,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:04,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:04,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:04,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:04,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:04,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:04,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:04,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:04,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:04,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:04,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:04,918 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 03:42:04,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1920918117] [2020-10-29 03:42:04,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:42:04,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:42:04,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363890490] [2020-10-29 03:42:04,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 03:42:04,928 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:04,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 03:42:04,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:04,947 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2020-10-29 03:42:05,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:05,107 INFO L93 Difference]: Finished difference Result 72 states and 114 transitions. [2020-10-29 03:42:05,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 03:42:05,109 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-29 03:42:05,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:05,118 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:42:05,118 INFO L226 Difference]: Without dead ends: 36 [2020-10-29 03:42:05,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 03:42:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-29 03:42:05,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-10-29 03:42:05,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:42:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 42 transitions. [2020-10-29 03:42:05,169 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 42 transitions. Word has length 25 [2020-10-29 03:42:05,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:05,169 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 42 transitions. [2020-10-29 03:42:05,170 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 03:42:05,170 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 42 transitions. [2020-10-29 03:42:05,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 03:42:05,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:05,171 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] [2020-10-29 03:42:05,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:42:05,172 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:05,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:05,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1214100017, now seen corresponding path program 1 times [2020-10-29 03:42:05,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:05,173 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [110833490] [2020-10-29 03:42:05,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:05,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:05,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:05,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:05,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:05,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:08,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:10,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:42:10,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:10,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:42:10,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:10,195 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:42:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:10,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:42:10,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:10,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:10,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:10,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:10,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:10,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:10,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:10,344 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:10,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [110833490] [2020-10-29 03:42:10,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:10,345 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:42:10,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663766729] [2020-10-29 03:42:10,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:42:10,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:10,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:42:10,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:42:10,349 INFO L87 Difference]: Start difference. First operand 36 states and 42 transitions. Second operand 10 states. [2020-10-29 03:42:10,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:10,746 INFO L93 Difference]: Finished difference Result 66 states and 78 transitions. [2020-10-29 03:42:10,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:42:10,747 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2020-10-29 03:42:10,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:10,750 INFO L225 Difference]: With dead ends: 66 [2020-10-29 03:42:10,750 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:42:10,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:42:10,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:42:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2020-10-29 03:42:10,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:42:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-10-29 03:42:10,767 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 31 [2020-10-29 03:42:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:10,768 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-10-29 03:42:10,768 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:42:10,768 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-10-29 03:42:10,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:42:10,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:10,770 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 03:42:10,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:42:10,770 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:10,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:10,771 INFO L82 PathProgramCache]: Analyzing trace with hash 533381496, now seen corresponding path program 2 times [2020-10-29 03:42:10,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:10,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878659517] [2020-10-29 03:42:10,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:10,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:10,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:10,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:15,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:15,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-29 03:42:15,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:15,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:42:15,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:15,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:42:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:15,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:42:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:15,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:15,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:15,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:15,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:15,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:15,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:15,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:15,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:15,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:15,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:42:15,974 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:15,975 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878659517] [2020-10-29 03:42:15,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:15,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:42:15,975 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486866168] [2020-10-29 03:42:15,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:42:15,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:15,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:42:15,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:42:15,978 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 11 states. [2020-10-29 03:42:16,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:16,414 INFO L93 Difference]: Finished difference Result 78 states and 95 transitions. [2020-10-29 03:42:16,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:42:16,414 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-29 03:42:16,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:16,418 INFO L225 Difference]: With dead ends: 78 [2020-10-29 03:42:16,418 INFO L226 Difference]: Without dead ends: 74 [2020-10-29 03:42:16,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:16,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-29 03:42:16,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 45. [2020-10-29 03:42:16,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 03:42:16,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2020-10-29 03:42:16,430 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 32 [2020-10-29 03:42:16,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:16,430 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2020-10-29 03:42:16,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:42:16,431 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2020-10-29 03:42:16,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-29 03:42:16,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:16,432 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 03:42:16,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:42:16,432 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:16,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:16,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1129266449, now seen corresponding path program 3 times [2020-10-29 03:42:16,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:16,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572970641] [2020-10-29 03:42:16,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:16,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:16,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:20,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:21,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:21,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 03:42:21,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:21,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:21,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:21,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:21,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:42:21,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:21,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:42:21,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 03:42:21,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:21,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:21,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:21,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:21,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:21,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:21,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:42:21,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:21,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:21,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:21,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:21,683 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:21,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572970641] [2020-10-29 03:42:21,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:21,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:42:21,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844220044] [2020-10-29 03:42:21,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:42:21,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:21,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:42:21,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:21,686 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand 12 states. [2020-10-29 03:42:22,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:22,099 INFO L93 Difference]: Finished difference Result 83 states and 105 transitions. [2020-10-29 03:42:22,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:42:22,100 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-10-29 03:42:22,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:22,101 INFO L225 Difference]: With dead ends: 83 [2020-10-29 03:42:22,101 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:42:22,102 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:22,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:42:22,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 46. [2020-10-29 03:42:22,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-10-29 03:42:22,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 55 transitions. [2020-10-29 03:42:22,112 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 55 transitions. Word has length 33 [2020-10-29 03:42:22,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:22,112 INFO L481 AbstractCegarLoop]: Abstraction has 46 states and 55 transitions. [2020-10-29 03:42:22,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:42:22,113 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2020-10-29 03:42:22,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 03:42:22,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:22,114 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 03:42:22,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:42:22,114 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:22,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:22,115 INFO L82 PathProgramCache]: Analyzing trace with hash -1131745192, now seen corresponding path program 4 times [2020-10-29 03:42:22,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:22,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024577320] [2020-10-29 03:42:22,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:22,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:22,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:26,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:27,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:42:27,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:27,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:27,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:27,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:42:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:42:27,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:27,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:27,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:27,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:27,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:27,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:27,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:27,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:27,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:27,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:27,368 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:27,368 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024577320] [2020-10-29 03:42:27,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:27,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:42:27,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853064750] [2020-10-29 03:42:27,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:42:27,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:27,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:42:27,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:42:27,377 INFO L87 Difference]: Start difference. First operand 46 states and 55 transitions. Second operand 13 states. [2020-10-29 03:42:27,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:27,997 INFO L93 Difference]: Finished difference Result 88 states and 115 transitions. [2020-10-29 03:42:27,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:42:27,998 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-10-29 03:42:27,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:28,001 INFO L225 Difference]: With dead ends: 88 [2020-10-29 03:42:28,001 INFO L226 Difference]: Without dead ends: 84 [2020-10-29 03:42:28,002 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:42:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-29 03:42:28,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 47. [2020-10-29 03:42:28,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-29 03:42:28,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2020-10-29 03:42:28,012 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 34 [2020-10-29 03:42:28,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:28,013 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2020-10-29 03:42:28,013 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:42:28,013 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2020-10-29 03:42:28,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:42:28,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:28,014 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 03:42:28,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:42:28,014 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:28,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:28,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1208586225, now seen corresponding path program 5 times [2020-10-29 03:42:28,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:28,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234418303] [2020-10-29 03:42:28,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:28,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:32,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 03:42:33,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:33,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:33,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:42:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:33,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:42:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:33,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:33,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:33,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:33,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:33,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:33,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:33,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:33,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:33,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:33,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:33,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:33,358 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:33,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234418303] [2020-10-29 03:42:33,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:33,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:42:33,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [646508553] [2020-10-29 03:42:33,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:42:33,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:33,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:42:33,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:42:33,361 INFO L87 Difference]: Start difference. First operand 47 states and 57 transitions. Second operand 14 states. [2020-10-29 03:42:34,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:34,042 INFO L93 Difference]: Finished difference Result 93 states and 125 transitions. [2020-10-29 03:42:34,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:42:34,044 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-29 03:42:34,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:34,047 INFO L225 Difference]: With dead ends: 93 [2020-10-29 03:42:34,047 INFO L226 Difference]: Without dead ends: 89 [2020-10-29 03:42:34,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:42:34,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-29 03:42:34,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 48. [2020-10-29 03:42:34,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-10-29 03:42:34,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2020-10-29 03:42:34,069 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 35 [2020-10-29 03:42:34,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:34,069 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2020-10-29 03:42:34,069 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:42:34,070 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2020-10-29 03:42:34,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-29 03:42:34,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:34,071 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 03:42:34,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:42:34,073 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:34,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:34,074 INFO L82 PathProgramCache]: Analyzing trace with hash 704309048, now seen corresponding path program 6 times [2020-10-29 03:42:34,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:34,074 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430427482] [2020-10-29 03:42:34,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:34,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:34,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:38,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:42:39,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:39,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:42:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:39,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:39,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:39,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:39,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:39,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:39,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [430427482] [2020-10-29 03:42:39,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:39,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:42:39,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219161344] [2020-10-29 03:42:39,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:42:39,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:39,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:42:39,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:42:39,454 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 15 states. [2020-10-29 03:42:40,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:40,125 INFO L93 Difference]: Finished difference Result 98 states and 135 transitions. [2020-10-29 03:42:40,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:42:40,126 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 36 [2020-10-29 03:42:40,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:40,127 INFO L225 Difference]: With dead ends: 98 [2020-10-29 03:42:40,127 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:42:40,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=101, Invalid=319, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:42:40,128 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:42:40,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 49. [2020-10-29 03:42:40,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-29 03:42:40,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-29 03:42:40,137 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 36 [2020-10-29 03:42:40,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:40,137 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-29 03:42:40,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:42:40,137 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-29 03:42:40,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 03:42:40,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:40,138 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-10-29 03:42:40,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:42:40,139 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:40,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:40,139 INFO L82 PathProgramCache]: Analyzing trace with hash -125479633, now seen corresponding path program 7 times [2020-10-29 03:42:40,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:40,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [542686988] [2020-10-29 03:42:40,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:40,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:40,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:44,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:42:45,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:45,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:42:45,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:42:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:42:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:45,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:45,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:45,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:45,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:45,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:45,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:45,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:45,562 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:45,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [542686988] [2020-10-29 03:42:45,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:45,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:42:45,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154609788] [2020-10-29 03:42:45,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:42:45,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:45,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:42:45,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:42:45,565 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 16 states. [2020-10-29 03:42:46,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:46,260 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2020-10-29 03:42:46,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:42:46,261 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 37 [2020-10-29 03:42:46,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:46,263 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:42:46,264 INFO L226 Difference]: Without dead ends: 99 [2020-10-29 03:42:46,265 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:42:46,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-29 03:42:46,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 50. [2020-10-29 03:42:46,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-29 03:42:46,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2020-10-29 03:42:46,274 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 37 [2020-10-29 03:42:46,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:46,274 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2020-10-29 03:42:46,274 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:42:46,274 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2020-10-29 03:42:46,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:42:46,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:46,276 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:42:46,276 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:42:46,276 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:46,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:46,277 INFO L82 PathProgramCache]: Analyzing trace with hash 122060329, now seen corresponding path program 1 times [2020-10-29 03:42:46,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:46,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642252380] [2020-10-29 03:42:46,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:46,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:46,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:48,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:51,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-29 03:42:51,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:42:51,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:51,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:51,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:51,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:42:51,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:51,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:51,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:51,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:42:51,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:51,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:42:51,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:51,513 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 03:42:51,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642252380] [2020-10-29 03:42:51,514 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:51,514 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:42:51,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840831597] [2020-10-29 03:42:51,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:42:51,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:51,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:42:51,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:42:51,516 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 12 states. [2020-10-29 03:42:52,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:52,064 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-10-29 03:42:52,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:42:52,065 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 39 [2020-10-29 03:42:52,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:52,067 INFO L225 Difference]: With dead ends: 72 [2020-10-29 03:42:52,067 INFO L226 Difference]: Without dead ends: 48 [2020-10-29 03:42:52,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:42:52,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-29 03:42:52,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 39. [2020-10-29 03:42:52,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:42:52,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-29 03:42:52,075 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 39 [2020-10-29 03:42:52,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:52,075 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-29 03:42:52,076 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:42:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-29 03:42:52,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:42:52,077 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:52,077 INFO L422 BasicCegarLoop]: trace histogram [8, 1, 1, 1, 1, 1, 1, 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 03:42:52,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:42:52,077 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:52,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:52,078 INFO L82 PathProgramCache]: Analyzing trace with hash -79124968, now seen corresponding path program 8 times [2020-10-29 03:42:52,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:52,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1432254917] [2020-10-29 03:42:52,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:52,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:52,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:56,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:57,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-29 03:42:57,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:42:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:57,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:42:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:57,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:57,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:42:57,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:42:57,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:42:57,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:42:57,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:42:57,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:42:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:42:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:42:57,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:42:57,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:42:57,545 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 0 proven. 37 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:42:57,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1432254917] [2020-10-29 03:42:57,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:42:57,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:42:57,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124022495] [2020-10-29 03:42:57,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:42:57,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:42:57,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:42:57,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=197, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:42:57,547 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 17 states. [2020-10-29 03:42:58,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:42:58,136 INFO L93 Difference]: Finished difference Result 89 states and 126 transitions. [2020-10-29 03:42:58,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:42:58,137 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-29 03:42:58,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:42:58,138 INFO L225 Difference]: With dead ends: 89 [2020-10-29 03:42:58,138 INFO L226 Difference]: Without dead ends: 80 [2020-10-29 03:42:58,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=123, Invalid=339, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:42:58,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-29 03:42:58,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 40. [2020-10-29 03:42:58,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-29 03:42:58,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-10-29 03:42:58,153 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 38 [2020-10-29 03:42:58,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:42:58,153 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-10-29 03:42:58,153 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:42:58,153 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-10-29 03:42:58,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-29 03:42:58,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:42:58,154 INFO L422 BasicCegarLoop]: trace histogram [9, 1, 1, 1, 1, 1, 1, 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 03:42:58,154 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:42:58,155 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:42:58,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:42:58,155 INFO L82 PathProgramCache]: Analyzing trace with hash 1357869647, now seen corresponding path program 9 times [2020-10-29 03:42:58,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:42:58,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983946007] [2020-10-29 03:42:58,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:42:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:42:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:42:58,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:03,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 03:43:03,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:43:03,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:43:03,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:03,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 03:43:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-29 03:43:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:43:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:03,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:03,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:03,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:03,310 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 03:43:03,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983946007] [2020-10-29 03:43:03,311 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:03,311 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:43:03,311 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979920113] [2020-10-29 03:43:03,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:43:03,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:03,312 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:43:03,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:43:03,313 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 13 states. [2020-10-29 03:43:03,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:03,631 INFO L93 Difference]: Finished difference Result 118 states and 173 transitions. [2020-10-29 03:43:03,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 03:43:03,632 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 39 [2020-10-29 03:43:03,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:03,633 INFO L225 Difference]: With dead ends: 118 [2020-10-29 03:43:03,633 INFO L226 Difference]: Without dead ends: 86 [2020-10-29 03:43:03,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:43:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-29 03:43:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-10-29 03:43:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-10-29 03:43:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-10-29 03:43:03,650 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 39 [2020-10-29 03:43:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:03,651 INFO L481 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-10-29 03:43:03,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:43:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-10-29 03:43:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-29 03:43:03,652 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:03,653 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 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 03:43:03,653 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:43:03,653 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash -1670438318, now seen corresponding path program 10 times [2020-10-29 03:43:03,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:03,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051264272] [2020-10-29 03:43:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:03,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:03,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:03,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:08,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:43:08,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:08,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:43:08,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:08,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:43:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:43:08,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-29 03:43:08,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:08,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:08,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:08,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:08,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:08,854 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-29 03:43:08,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051264272] [2020-10-29 03:43:08,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:08,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:43:08,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020535518] [2020-10-29 03:43:08,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:43:08,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:08,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:43:08,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:08,857 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 14 states. [2020-10-29 03:43:09,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:09,144 INFO L93 Difference]: Finished difference Result 161 states and 176 transitions. [2020-10-29 03:43:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:43:09,144 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 85 [2020-10-29 03:43:09,144 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:09,145 INFO L225 Difference]: With dead ends: 161 [2020-10-29 03:43:09,145 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:43:09,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:43:09,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:43:09,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-29 03:43:09,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:43:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2020-10-29 03:43:09,162 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 85 [2020-10-29 03:43:09,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:09,163 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2020-10-29 03:43:09,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:43:09,163 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2020-10-29 03:43:09,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 03:43:09,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:09,164 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 1, 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 03:43:09,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:43:09,165 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:09,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:09,165 INFO L82 PathProgramCache]: Analyzing trace with hash 403285423, now seen corresponding path program 11 times [2020-10-29 03:43:09,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:09,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1450957253] [2020-10-29 03:43:09,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:09,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:09,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:09,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-29 03:43:14,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:14,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:14,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:14,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:14,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:14,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:14,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:43:14,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:14,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:14,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:14,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:14,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:14,424 INFO L134 CoverageAnalysis]: Checked inductivity of 396 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-29 03:43:14,424 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1450957253] [2020-10-29 03:43:14,424 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:14,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:43:14,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057090224] [2020-10-29 03:43:14,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:43:14,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:14,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:43:14,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:14,428 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand 15 states. [2020-10-29 03:43:14,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:14,695 INFO L93 Difference]: Finished difference Result 172 states and 187 transitions. [2020-10-29 03:43:14,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:43:14,696 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 91 [2020-10-29 03:43:14,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:14,697 INFO L225 Difference]: With dead ends: 172 [2020-10-29 03:43:14,697 INFO L226 Difference]: Without dead ends: 98 [2020-10-29 03:43:14,698 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:43:14,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-29 03:43:14,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2020-10-29 03:43:14,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-29 03:43:14,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2020-10-29 03:43:14,723 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 91 [2020-10-29 03:43:14,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:14,724 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2020-10-29 03:43:14,724 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:43:14,724 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2020-10-29 03:43:14,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-29 03:43:14,727 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:14,727 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 1, 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 03:43:14,727 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:43:14,727 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:14,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:14,728 INFO L82 PathProgramCache]: Analyzing trace with hash 1428679282, now seen corresponding path program 12 times [2020-10-29 03:43:14,728 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:14,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1279823919] [2020-10-29 03:43:14,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:14,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:14,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:14,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:17,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:19,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:43:19,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:19,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:20,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:20,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:20,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:20,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 03:43:20,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:20,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:43:20,035 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 0 proven. 78 refuted. 0 times theorem prover too weak. 390 trivial. 0 not checked. [2020-10-29 03:43:20,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1279823919] [2020-10-29 03:43:20,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:20,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:43:20,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423457054] [2020-10-29 03:43:20,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:43:20,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:20,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:43:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:20,057 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand 16 states. [2020-10-29 03:43:20,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:20,486 INFO L93 Difference]: Finished difference Result 183 states and 198 transitions. [2020-10-29 03:43:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:43:20,487 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 97 [2020-10-29 03:43:20,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:20,489 INFO L225 Difference]: With dead ends: 183 [2020-10-29 03:43:20,489 INFO L226 Difference]: Without dead ends: 104 [2020-10-29 03:43:20,490 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:43:20,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-10-29 03:43:20,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 104. [2020-10-29 03:43:20,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-29 03:43:20,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 109 transitions. [2020-10-29 03:43:20,520 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 109 transitions. Word has length 97 [2020-10-29 03:43:20,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:20,521 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 109 transitions. [2020-10-29 03:43:20,521 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:43:20,521 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 109 transitions. [2020-10-29 03:43:20,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-29 03:43:20,523 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:20,523 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 13, 1, 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 03:43:20,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:43:20,523 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:20,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:20,524 INFO L82 PathProgramCache]: Analyzing trace with hash -1002071025, now seen corresponding path program 13 times [2020-10-29 03:43:20,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:20,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649333629] [2020-10-29 03:43:20,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:20,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:20,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:24,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:43:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:43:25,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 03:43:25,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:25,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:25,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:25,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:25,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:25,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:25,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:25,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:25,816 INFO L134 CoverageAnalysis]: Checked inductivity of 546 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2020-10-29 03:43:25,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649333629] [2020-10-29 03:43:25,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:25,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:43:25,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913906370] [2020-10-29 03:43:25,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:43:25,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:25,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:43:25,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:25,820 INFO L87 Difference]: Start difference. First operand 104 states and 109 transitions. Second operand 17 states. [2020-10-29 03:43:26,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:26,132 INFO L93 Difference]: Finished difference Result 194 states and 209 transitions. [2020-10-29 03:43:26,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:43:26,132 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 103 [2020-10-29 03:43:26,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:26,133 INFO L225 Difference]: With dead ends: 194 [2020-10-29 03:43:26,133 INFO L226 Difference]: Without dead ends: 110 [2020-10-29 03:43:26,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:43:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-29 03:43:26,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2020-10-29 03:43:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-10-29 03:43:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 115 transitions. [2020-10-29 03:43:26,154 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 115 transitions. Word has length 103 [2020-10-29 03:43:26,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:26,154 INFO L481 AbstractCegarLoop]: Abstraction has 110 states and 115 transitions. [2020-10-29 03:43:26,154 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:43:26,154 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 115 transitions. [2020-10-29 03:43:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-29 03:43:26,155 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:26,155 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 14, 14, 1, 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 03:43:26,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:43:26,156 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:26,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:26,156 INFO L82 PathProgramCache]: Analyzing trace with hash 569830034, now seen corresponding path program 14 times [2020-10-29 03:43:26,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:26,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084230471] [2020-10-29 03:43:26,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:26,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:26,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:26,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:26,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:43:31,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:31,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:31,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:31,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:31,504 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 105 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2020-10-29 03:43:31,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084230471] [2020-10-29 03:43:31,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:31,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:43:31,505 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301002099] [2020-10-29 03:43:31,505 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:43:31,505 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:31,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:43:31,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:31,506 INFO L87 Difference]: Start difference. First operand 110 states and 115 transitions. Second operand 18 states. [2020-10-29 03:43:31,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:31,825 INFO L93 Difference]: Finished difference Result 205 states and 220 transitions. [2020-10-29 03:43:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:43:31,826 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 109 [2020-10-29 03:43:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:31,827 INFO L225 Difference]: With dead ends: 205 [2020-10-29 03:43:31,828 INFO L226 Difference]: Without dead ends: 116 [2020-10-29 03:43:31,829 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:43:31,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-10-29 03:43:31,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2020-10-29 03:43:31,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-29 03:43:31,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 121 transitions. [2020-10-29 03:43:31,846 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 121 transitions. Word has length 109 [2020-10-29 03:43:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:31,847 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 121 transitions. [2020-10-29 03:43:31,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:43:31,847 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 121 transitions. [2020-10-29 03:43:31,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-29 03:43:31,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:31,850 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 15, 15, 1, 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 03:43:31,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:43:31,850 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:31,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:31,850 INFO L82 PathProgramCache]: Analyzing trace with hash 2142739055, now seen corresponding path program 15 times [2020-10-29 03:43:31,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:31,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568499380] [2020-10-29 03:43:31,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:31,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:31,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:32,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:36,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:36,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 03:43:36,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:43:36,902 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:37,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:37,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:37,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:37,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:37,193 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 600 trivial. 0 not checked. [2020-10-29 03:43:37,193 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568499380] [2020-10-29 03:43:37,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:37,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:43:37,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594087067] [2020-10-29 03:43:37,194 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:43:37,194 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:37,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:43:37,195 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:37,195 INFO L87 Difference]: Start difference. First operand 116 states and 121 transitions. Second operand 19 states. [2020-10-29 03:43:37,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:37,564 INFO L93 Difference]: Finished difference Result 216 states and 231 transitions. [2020-10-29 03:43:37,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 03:43:37,565 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 115 [2020-10-29 03:43:37,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:37,566 INFO L225 Difference]: With dead ends: 216 [2020-10-29 03:43:37,566 INFO L226 Difference]: Without dead ends: 122 [2020-10-29 03:43:37,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:43:37,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-10-29 03:43:37,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-10-29 03:43:37,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:43:37,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 127 transitions. [2020-10-29 03:43:37,582 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 127 transitions. Word has length 115 [2020-10-29 03:43:37,582 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:37,582 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 127 transitions. [2020-10-29 03:43:37,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:43:37,582 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 127 transitions. [2020-10-29 03:43:37,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-10-29 03:43:37,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:37,583 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 16, 16, 1, 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 03:43:37,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:43:37,584 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:37,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:37,584 INFO L82 PathProgramCache]: Analyzing trace with hash -728096078, now seen corresponding path program 16 times [2020-10-29 03:43:37,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:37,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792214453] [2020-10-29 03:43:37,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:37,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:37,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:37,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:42,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 03:43:42,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:43:42,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 03:43:42,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:42,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:43:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-29 03:43:42,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 03:43:42,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:42,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:42,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:42,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:42,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:42,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:42,956 INFO L134 CoverageAnalysis]: Checked inductivity of 816 backedges. 0 proven. 136 refuted. 0 times theorem prover too weak. 680 trivial. 0 not checked. [2020-10-29 03:43:42,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792214453] [2020-10-29 03:43:42,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:42,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:43:42,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546639786] [2020-10-29 03:43:42,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:43:42,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:42,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:43:42,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:42,959 INFO L87 Difference]: Start difference. First operand 122 states and 127 transitions. Second operand 20 states. [2020-10-29 03:43:43,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:43,334 INFO L93 Difference]: Finished difference Result 227 states and 242 transitions. [2020-10-29 03:43:43,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 03:43:43,335 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 121 [2020-10-29 03:43:43,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:43,336 INFO L225 Difference]: With dead ends: 227 [2020-10-29 03:43:43,336 INFO L226 Difference]: Without dead ends: 128 [2020-10-29 03:43:43,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:43:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-29 03:43:43,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 128. [2020-10-29 03:43:43,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:43:43,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 133 transitions. [2020-10-29 03:43:43,352 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 133 transitions. Word has length 121 [2020-10-29 03:43:43,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:43,353 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 133 transitions. [2020-10-29 03:43:43,353 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:43:43,353 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 133 transitions. [2020-10-29 03:43:43,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-29 03:43:43,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:43,354 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 17, 17, 1, 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 03:43:43,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:43:43,355 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:43,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:43,355 INFO L82 PathProgramCache]: Analyzing trace with hash 1170317519, now seen corresponding path program 17 times [2020-10-29 03:43:43,355 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:43,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286806789] [2020-10-29 03:43:43,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:43,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:43,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-29 03:43:48,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:43:48,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:48,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:48,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:48,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:48,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:48,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:48,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:48,763 INFO L134 CoverageAnalysis]: Checked inductivity of 918 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 765 trivial. 0 not checked. [2020-10-29 03:43:48,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286806789] [2020-10-29 03:43:48,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:48,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:43:48,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433006227] [2020-10-29 03:43:48,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:43:48,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:48,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:43:48,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:48,766 INFO L87 Difference]: Start difference. First operand 128 states and 133 transitions. Second operand 21 states. [2020-10-29 03:43:49,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:49,178 INFO L93 Difference]: Finished difference Result 238 states and 253 transitions. [2020-10-29 03:43:49,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:43:49,178 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 127 [2020-10-29 03:43:49,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:49,179 INFO L225 Difference]: With dead ends: 238 [2020-10-29 03:43:49,180 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:43:49,180 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:43:49,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:43:49,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2020-10-29 03:43:49,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-29 03:43:49,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 139 transitions. [2020-10-29 03:43:49,194 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 139 transitions. Word has length 127 [2020-10-29 03:43:49,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:49,195 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 139 transitions. [2020-10-29 03:43:49,195 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:43:49,195 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 139 transitions. [2020-10-29 03:43:49,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 03:43:49,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:49,197 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 18, 18, 1, 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 03:43:49,197 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:43:49,197 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:49,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:49,197 INFO L82 PathProgramCache]: Analyzing trace with hash -263220526, now seen corresponding path program 18 times [2020-10-29 03:43:49,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:49,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2005493707] [2020-10-29 03:43:49,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:49,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:49,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:54,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 03:43:54,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:43:54,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:43:54,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:54,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:43:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:43:54,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:43:54,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:54,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:43:54,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:54,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:54,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:43:54,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:43:54,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:43:54,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:43:54,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:43:54,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:43:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:43:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:43:54,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:43:54,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:43:54,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1026 backedges. 0 proven. 171 refuted. 0 times theorem prover too weak. 855 trivial. 0 not checked. [2020-10-29 03:43:54,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2005493707] [2020-10-29 03:43:54,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:43:54,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:43:54,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699201824] [2020-10-29 03:43:54,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:43:54,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:43:54,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:43:54,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:54,623 INFO L87 Difference]: Start difference. First operand 134 states and 139 transitions. Second operand 22 states. [2020-10-29 03:43:55,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:43:55,094 INFO L93 Difference]: Finished difference Result 249 states and 264 transitions. [2020-10-29 03:43:55,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 03:43:55,095 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 133 [2020-10-29 03:43:55,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:43:55,096 INFO L225 Difference]: With dead ends: 249 [2020-10-29 03:43:55,097 INFO L226 Difference]: Without dead ends: 140 [2020-10-29 03:43:55,098 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:43:55,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-29 03:43:55,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-29 03:43:55,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-29 03:43:55,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 145 transitions. [2020-10-29 03:43:55,112 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 145 transitions. Word has length 133 [2020-10-29 03:43:55,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:43:55,112 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 145 transitions. [2020-10-29 03:43:55,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:43:55,112 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 145 transitions. [2020-10-29 03:43:55,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-29 03:43:55,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:43:55,114 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 19, 19, 1, 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 03:43:55,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:43:55,115 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:43:55,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:43:55,115 INFO L82 PathProgramCache]: Analyzing trace with hash -2142916817, now seen corresponding path program 19 times [2020-10-29 03:43:55,115 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:43:55,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931628886] [2020-10-29 03:43:55,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:43:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:43:55,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:43:55,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:00,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 03:44:00,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:44:00,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:00,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:00,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:00,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:00,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:00,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:00,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:00,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:00,543 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:00,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1140 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 950 trivial. 0 not checked. [2020-10-29 03:44:00,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931628886] [2020-10-29 03:44:00,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:00,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:44:00,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636473614] [2020-10-29 03:44:00,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:44:00,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:00,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:44:00,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:00,559 INFO L87 Difference]: Start difference. First operand 140 states and 145 transitions. Second operand 23 states. [2020-10-29 03:44:01,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:01,041 INFO L93 Difference]: Finished difference Result 260 states and 275 transitions. [2020-10-29 03:44:01,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:44:01,042 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 139 [2020-10-29 03:44:01,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:01,044 INFO L225 Difference]: With dead ends: 260 [2020-10-29 03:44:01,044 INFO L226 Difference]: Without dead ends: 146 [2020-10-29 03:44:01,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:44:01,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-29 03:44:01,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2020-10-29 03:44:01,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-29 03:44:01,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 151 transitions. [2020-10-29 03:44:01,060 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 151 transitions. Word has length 139 [2020-10-29 03:44:01,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:01,061 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 151 transitions. [2020-10-29 03:44:01,061 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:44:01,061 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 151 transitions. [2020-10-29 03:44:01,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-29 03:44:01,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:01,062 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 20, 20, 1, 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 03:44:01,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:44:01,063 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:01,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:01,063 INFO L82 PathProgramCache]: Analyzing trace with hash -1982514446, now seen corresponding path program 20 times [2020-10-29 03:44:01,063 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:01,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999888959] [2020-10-29 03:44:01,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:01,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:01,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:06,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:44:06,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:06,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:06,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:06,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:06,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:06,558 INFO L134 CoverageAnalysis]: Checked inductivity of 1260 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 1050 trivial. 0 not checked. [2020-10-29 03:44:06,558 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999888959] [2020-10-29 03:44:06,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:06,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:44:06,559 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528301756] [2020-10-29 03:44:06,559 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:44:06,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:06,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:44:06,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:06,560 INFO L87 Difference]: Start difference. First operand 146 states and 151 transitions. Second operand 24 states. [2020-10-29 03:44:06,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:06,990 INFO L93 Difference]: Finished difference Result 271 states and 286 transitions. [2020-10-29 03:44:06,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 03:44:06,993 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 145 [2020-10-29 03:44:06,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:06,994 INFO L225 Difference]: With dead ends: 271 [2020-10-29 03:44:06,995 INFO L226 Difference]: Without dead ends: 152 [2020-10-29 03:44:06,995 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:44:06,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-29 03:44:07,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2020-10-29 03:44:07,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-29 03:44:07,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 157 transitions. [2020-10-29 03:44:07,011 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 157 transitions. Word has length 145 [2020-10-29 03:44:07,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:07,011 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 157 transitions. [2020-10-29 03:44:07,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:44:07,011 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 157 transitions. [2020-10-29 03:44:07,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-29 03:44:07,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:07,012 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 21, 21, 1, 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 03:44:07,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:44:07,013 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:07,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:07,013 INFO L82 PathProgramCache]: Analyzing trace with hash 665175439, now seen corresponding path program 21 times [2020-10-29 03:44:07,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:07,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505187575] [2020-10-29 03:44:07,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:07,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:07,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:12,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-29 03:44:12,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:12,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:12,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:12,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:44:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-29 03:44:12,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:44:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:12,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:12,541 INFO L134 CoverageAnalysis]: Checked inductivity of 1386 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 1155 trivial. 0 not checked. [2020-10-29 03:44:12,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505187575] [2020-10-29 03:44:12,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:12,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 03:44:12,542 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079450369] [2020-10-29 03:44:12,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 03:44:12,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:12,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 03:44:12,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:12,543 INFO L87 Difference]: Start difference. First operand 152 states and 157 transitions. Second operand 25 states. [2020-10-29 03:44:13,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:13,011 INFO L93 Difference]: Finished difference Result 282 states and 297 transitions. [2020-10-29 03:44:13,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:44:13,012 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 151 [2020-10-29 03:44:13,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:13,013 INFO L225 Difference]: With dead ends: 282 [2020-10-29 03:44:13,013 INFO L226 Difference]: Without dead ends: 158 [2020-10-29 03:44:13,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:44:13,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-29 03:44:13,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-10-29 03:44:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-29 03:44:13,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 163 transitions. [2020-10-29 03:44:13,031 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 163 transitions. Word has length 151 [2020-10-29 03:44:13,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:13,031 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 163 transitions. [2020-10-29 03:44:13,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 03:44:13,032 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 163 transitions. [2020-10-29 03:44:13,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-10-29 03:44:13,033 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:13,033 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 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 03:44:13,033 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:44:13,033 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:13,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:13,034 INFO L82 PathProgramCache]: Analyzing trace with hash 661199634, now seen corresponding path program 22 times [2020-10-29 03:44:13,034 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:13,034 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [978758770] [2020-10-29 03:44:13,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:13,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:18,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 03:44:18,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:44:18,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:18,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:44:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-29 03:44:18,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 03:44:18,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:18,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:18,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:18,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:18,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:18,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:18,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:18,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:44:18,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:18,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:18,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:18,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:44:18,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1518 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1265 trivial. 0 not checked. [2020-10-29 03:44:18,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [978758770] [2020-10-29 03:44:18,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:18,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:44:18,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992161590] [2020-10-29 03:44:18,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:44:18,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:18,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:44:18,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:18,752 INFO L87 Difference]: Start difference. First operand 158 states and 163 transitions. Second operand 26 states. [2020-10-29 03:44:19,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:19,283 INFO L93 Difference]: Finished difference Result 293 states and 308 transitions. [2020-10-29 03:44:19,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:44:19,284 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 157 [2020-10-29 03:44:19,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:19,286 INFO L225 Difference]: With dead ends: 293 [2020-10-29 03:44:19,286 INFO L226 Difference]: Without dead ends: 164 [2020-10-29 03:44:19,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:44:19,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-29 03:44:19,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2020-10-29 03:44:19,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-29 03:44:19,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 169 transitions. [2020-10-29 03:44:19,304 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 169 transitions. Word has length 157 [2020-10-29 03:44:19,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:19,304 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 169 transitions. [2020-10-29 03:44:19,304 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:44:19,304 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 169 transitions. [2020-10-29 03:44:19,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-29 03:44:19,305 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:19,305 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 23, 23, 1, 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 03:44:19,305 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:44:19,305 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:19,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:19,306 INFO L82 PathProgramCache]: Analyzing trace with hash -490478609, now seen corresponding path program 23 times [2020-10-29 03:44:19,306 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:19,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1065145172] [2020-10-29 03:44:19,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:19,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:19,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:19,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:24,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 03:44:24,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:24,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:24,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:24,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:24,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:44:24,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-29 03:44:24,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:44:24,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:24,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:24,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:24,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:24,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:24,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:24,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:24,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:24,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:24,855 INFO L134 CoverageAnalysis]: Checked inductivity of 1656 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 1380 trivial. 0 not checked. [2020-10-29 03:44:24,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1065145172] [2020-10-29 03:44:24,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:24,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:44:24,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658603260] [2020-10-29 03:44:24,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:44:24,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:24,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:44:24,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:24,857 INFO L87 Difference]: Start difference. First operand 164 states and 169 transitions. Second operand 27 states. [2020-10-29 03:44:25,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:25,314 INFO L93 Difference]: Finished difference Result 304 states and 319 transitions. [2020-10-29 03:44:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-29 03:44:25,314 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 163 [2020-10-29 03:44:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:25,316 INFO L225 Difference]: With dead ends: 304 [2020-10-29 03:44:25,316 INFO L226 Difference]: Without dead ends: 170 [2020-10-29 03:44:25,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:44:25,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-29 03:44:25,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2020-10-29 03:44:25,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-29 03:44:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 175 transitions. [2020-10-29 03:44:25,333 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 175 transitions. Word has length 163 [2020-10-29 03:44:25,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:25,333 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 175 transitions. [2020-10-29 03:44:25,333 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:44:25,333 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 175 transitions. [2020-10-29 03:44:25,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-29 03:44:25,334 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:25,334 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 24, 24, 1, 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 03:44:25,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:44:25,334 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:25,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:25,335 INFO L82 PathProgramCache]: Analyzing trace with hash -1597426894, now seen corresponding path program 24 times [2020-10-29 03:44:25,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:25,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859844110] [2020-10-29 03:44:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:25,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:44:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:30,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 03:44:30,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:30,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:30,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:30,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:30,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:30,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:30,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:30,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:30,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:30,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:30,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 1800 backedges. 0 proven. 300 refuted. 0 times theorem prover too weak. 1500 trivial. 0 not checked. [2020-10-29 03:44:30,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859844110] [2020-10-29 03:44:30,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:30,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:44:30,985 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321221132] [2020-10-29 03:44:30,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:44:30,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:30,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:44:30,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:30,987 INFO L87 Difference]: Start difference. First operand 170 states and 175 transitions. Second operand 28 states. [2020-10-29 03:44:31,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:31,592 INFO L93 Difference]: Finished difference Result 315 states and 330 transitions. [2020-10-29 03:44:31,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-29 03:44:31,592 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 169 [2020-10-29 03:44:31,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:31,594 INFO L225 Difference]: With dead ends: 315 [2020-10-29 03:44:31,594 INFO L226 Difference]: Without dead ends: 176 [2020-10-29 03:44:31,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:44:31,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-29 03:44:31,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-10-29 03:44:31,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-29 03:44:31,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 181 transitions. [2020-10-29 03:44:31,611 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 181 transitions. Word has length 169 [2020-10-29 03:44:31,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:31,611 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 181 transitions. [2020-10-29 03:44:31,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:44:31,611 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 181 transitions. [2020-10-29 03:44:31,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-29 03:44:31,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:31,612 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 25, 25, 1, 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 03:44:31,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:44:31,613 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:31,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:31,613 INFO L82 PathProgramCache]: Analyzing trace with hash 654445135, now seen corresponding path program 25 times [2020-10-29 03:44:31,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:31,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367376522] [2020-10-29 03:44:31,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:31,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:31,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:32,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:36,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:36,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 03:44:36,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:44:36,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:36,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:44:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:44:36,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 03:44:36,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:37,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:37,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:37,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:37,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:37,291 INFO L134 CoverageAnalysis]: Checked inductivity of 1950 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 1625 trivial. 0 not checked. [2020-10-29 03:44:37,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [367376522] [2020-10-29 03:44:37,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:37,291 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:44:37,291 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547048205] [2020-10-29 03:44:37,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:44:37,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:37,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:44:37,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:37,292 INFO L87 Difference]: Start difference. First operand 176 states and 181 transitions. Second operand 29 states. [2020-10-29 03:44:37,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:37,899 INFO L93 Difference]: Finished difference Result 326 states and 341 transitions. [2020-10-29 03:44:37,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:44:37,899 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 175 [2020-10-29 03:44:37,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:37,901 INFO L225 Difference]: With dead ends: 326 [2020-10-29 03:44:37,901 INFO L226 Difference]: Without dead ends: 182 [2020-10-29 03:44:37,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:44:37,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-29 03:44:37,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2020-10-29 03:44:37,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-29 03:44:37,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 187 transitions. [2020-10-29 03:44:37,920 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 187 transitions. Word has length 175 [2020-10-29 03:44:37,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:37,921 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 187 transitions. [2020-10-29 03:44:37,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:44:37,921 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 187 transitions. [2020-10-29 03:44:37,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-29 03:44:37,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:37,922 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 26, 26, 1, 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 03:44:37,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:44:37,923 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:37,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:37,923 INFO L82 PathProgramCache]: Analyzing trace with hash -13401262, now seen corresponding path program 26 times [2020-10-29 03:44:37,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:37,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123379656] [2020-10-29 03:44:37,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:37,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:38,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:42,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:44:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 03:44:42,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-29 03:44:42,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:43,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:43,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:43,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:43,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:43,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:43,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:43,642 INFO L134 CoverageAnalysis]: Checked inductivity of 2106 backedges. 0 proven. 351 refuted. 0 times theorem prover too weak. 1755 trivial. 0 not checked. [2020-10-29 03:44:43,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123379656] [2020-10-29 03:44:43,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:43,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:44:43,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559394706] [2020-10-29 03:44:43,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:44:43,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:43,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:44:43,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:43,644 INFO L87 Difference]: Start difference. First operand 182 states and 187 transitions. Second operand 30 states. [2020-10-29 03:44:44,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:44,255 INFO L93 Difference]: Finished difference Result 337 states and 352 transitions. [2020-10-29 03:44:44,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:44:44,256 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 181 [2020-10-29 03:44:44,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:44,257 INFO L225 Difference]: With dead ends: 337 [2020-10-29 03:44:44,257 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 03:44:44,258 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:44:44,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 03:44:44,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-29 03:44:44,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-29 03:44:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 193 transitions. [2020-10-29 03:44:44,276 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 193 transitions. Word has length 181 [2020-10-29 03:44:44,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:44,277 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 193 transitions. [2020-10-29 03:44:44,277 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:44:44,277 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 193 transitions. [2020-10-29 03:44:44,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-29 03:44:44,278 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:44,278 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 27, 27, 1, 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 03:44:44,278 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:44:44,279 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:44,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:44,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1480734895, now seen corresponding path program 27 times [2020-10-29 03:44:44,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:44,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588334912] [2020-10-29 03:44:44,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:44,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:44,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:45,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:49,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:49,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-29 03:44:49,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:49,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:44:49,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:49,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:49,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:44:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-29 03:44:49,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:44:49,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:50,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:50,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:50,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:50,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:50,047 INFO L134 CoverageAnalysis]: Checked inductivity of 2268 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1890 trivial. 0 not checked. [2020-10-29 03:44:50,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588334912] [2020-10-29 03:44:50,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:50,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-29 03:44:50,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863133282] [2020-10-29 03:44:50,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-29 03:44:50,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:50,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-29 03:44:50,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:50,048 INFO L87 Difference]: Start difference. First operand 188 states and 193 transitions. Second operand 31 states. [2020-10-29 03:44:50,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:50,595 INFO L93 Difference]: Finished difference Result 348 states and 363 transitions. [2020-10-29 03:44:50,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:44:50,595 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 187 [2020-10-29 03:44:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:50,597 INFO L225 Difference]: With dead ends: 348 [2020-10-29 03:44:50,597 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 03:44:50,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-29 03:44:50,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 03:44:50,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 194. [2020-10-29 03:44:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 194 states. [2020-10-29 03:44:50,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 199 transitions. [2020-10-29 03:44:50,613 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 199 transitions. Word has length 187 [2020-10-29 03:44:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:50,613 INFO L481 AbstractCegarLoop]: Abstraction has 194 states and 199 transitions. [2020-10-29 03:44:50,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-29 03:44:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 199 transitions. [2020-10-29 03:44:50,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-10-29 03:44:50,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:50,614 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 28, 28, 1, 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 03:44:50,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:44:50,614 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:50,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:50,615 INFO L82 PathProgramCache]: Analyzing trace with hash 1566968690, now seen corresponding path program 28 times [2020-10-29 03:44:50,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:50,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1894691337] [2020-10-29 03:44:50,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:50,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:50,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:51,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:44:55,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:55,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-29 03:44:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-29 03:44:55,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-29 03:44:55,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:44:56,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:56,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:44:56,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:44:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2436 backedges. 0 proven. 406 refuted. 0 times theorem prover too weak. 2030 trivial. 0 not checked. [2020-10-29 03:44:56,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1894691337] [2020-10-29 03:44:56,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:44:56,432 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:44:56,432 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935660311] [2020-10-29 03:44:56,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:44:56,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:44:56,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:44:56,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:44:56,433 INFO L87 Difference]: Start difference. First operand 194 states and 199 transitions. Second operand 32 states. [2020-10-29 03:44:57,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:44:57,023 INFO L93 Difference]: Finished difference Result 359 states and 374 transitions. [2020-10-29 03:44:57,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:44:57,024 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 193 [2020-10-29 03:44:57,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:44:57,026 INFO L225 Difference]: With dead ends: 359 [2020-10-29 03:44:57,026 INFO L226 Difference]: Without dead ends: 200 [2020-10-29 03:44:57,027 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:44:57,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2020-10-29 03:44:57,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2020-10-29 03:44:57,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-10-29 03:44:57,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 205 transitions. [2020-10-29 03:44:57,045 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 205 transitions. Word has length 193 [2020-10-29 03:44:57,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:44:57,045 INFO L481 AbstractCegarLoop]: Abstraction has 200 states and 205 transitions. [2020-10-29 03:44:57,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:44:57,045 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 205 transitions. [2020-10-29 03:44:57,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2020-10-29 03:44:57,046 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:44:57,046 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 29, 29, 1, 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 03:44:57,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:44:57,047 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:44:57,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:44:57,047 INFO L82 PathProgramCache]: Analyzing trace with hash -387551473, now seen corresponding path program 29 times [2020-10-29 03:44:57,047 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:44:57,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1627335681] [2020-10-29 03:44:57,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:44:57,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:44:57,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:44:57,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-29 03:45:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:02,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:02,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:02,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:02,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:02,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:02,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:02,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:02,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:02,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:02,925 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 2175 trivial. 0 not checked. [2020-10-29 03:45:02,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1627335681] [2020-10-29 03:45:02,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:02,925 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-29 03:45:02,925 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942351941] [2020-10-29 03:45:02,926 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-29 03:45:02,926 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:02,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-29 03:45:02,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:02,927 INFO L87 Difference]: Start difference. First operand 200 states and 205 transitions. Second operand 33 states. [2020-10-29 03:45:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:03,557 INFO L93 Difference]: Finished difference Result 370 states and 385 transitions. [2020-10-29 03:45:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-29 03:45:03,558 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 199 [2020-10-29 03:45:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:03,559 INFO L225 Difference]: With dead ends: 370 [2020-10-29 03:45:03,559 INFO L226 Difference]: Without dead ends: 206 [2020-10-29 03:45:03,560 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:45:03,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-29 03:45:03,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-10-29 03:45:03,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-29 03:45:03,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 211 transitions. [2020-10-29 03:45:03,579 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 211 transitions. Word has length 199 [2020-10-29 03:45:03,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:03,580 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 211 transitions. [2020-10-29 03:45:03,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-29 03:45:03,580 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 211 transitions. [2020-10-29 03:45:03,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-10-29 03:45:03,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:03,581 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 30, 30, 30, 1, 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 03:45:03,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:45:03,582 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:03,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:03,582 INFO L82 PathProgramCache]: Analyzing trace with hash -945894510, now seen corresponding path program 30 times [2020-10-29 03:45:03,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:03,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952585998] [2020-10-29 03:45:03,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:03,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:03,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:08,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:45:08,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:09,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:09,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:09,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:09,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:09,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:09,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:09,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:09,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:09,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2790 backedges. 0 proven. 465 refuted. 0 times theorem prover too weak. 2325 trivial. 0 not checked. [2020-10-29 03:45:09,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [952585998] [2020-10-29 03:45:09,508 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:09,508 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-29 03:45:09,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552489805] [2020-10-29 03:45:09,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-29 03:45:09,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:09,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-29 03:45:09,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:09,509 INFO L87 Difference]: Start difference. First operand 206 states and 211 transitions. Second operand 34 states. [2020-10-29 03:45:10,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:10,190 INFO L93 Difference]: Finished difference Result 381 states and 396 transitions. [2020-10-29 03:45:10,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:45:10,190 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 205 [2020-10-29 03:45:10,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:10,192 INFO L225 Difference]: With dead ends: 381 [2020-10-29 03:45:10,192 INFO L226 Difference]: Without dead ends: 212 [2020-10-29 03:45:10,193 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:45:10,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-29 03:45:10,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2020-10-29 03:45:10,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-10-29 03:45:10,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 217 transitions. [2020-10-29 03:45:10,210 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 217 transitions. Word has length 205 [2020-10-29 03:45:10,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:10,211 INFO L481 AbstractCegarLoop]: Abstraction has 212 states and 217 transitions. [2020-10-29 03:45:10,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-29 03:45:10,211 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 217 transitions. [2020-10-29 03:45:10,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-29 03:45:10,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:10,212 INFO L422 BasicCegarLoop]: trace histogram [31, 31, 31, 31, 31, 31, 1, 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 03:45:10,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:45:10,213 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:10,213 INFO L82 PathProgramCache]: Analyzing trace with hash 2043719023, now seen corresponding path program 31 times [2020-10-29 03:45:10,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:10,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124919104] [2020-10-29 03:45:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:10,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:10,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:10,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:15,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:15,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-29 03:45:15,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-29 03:45:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:16,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:16,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:16,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:16,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:16,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:16,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:16,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:16,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:16,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:16,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:16,187 INFO L134 CoverageAnalysis]: Checked inductivity of 2976 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 2480 trivial. 0 not checked. [2020-10-29 03:45:16,188 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124919104] [2020-10-29 03:45:16,188 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:16,188 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-29 03:45:16,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440390027] [2020-10-29 03:45:16,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-29 03:45:16,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:16,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-29 03:45:16,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:16,190 INFO L87 Difference]: Start difference. First operand 212 states and 217 transitions. Second operand 35 states. [2020-10-29 03:45:16,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:16,899 INFO L93 Difference]: Finished difference Result 392 states and 407 transitions. [2020-10-29 03:45:16,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:45:16,900 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 211 [2020-10-29 03:45:16,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:16,902 INFO L225 Difference]: With dead ends: 392 [2020-10-29 03:45:16,902 INFO L226 Difference]: Without dead ends: 218 [2020-10-29 03:45:16,903 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 03:45:16,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2020-10-29 03:45:16,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2020-10-29 03:45:16,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-10-29 03:45:16,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 223 transitions. [2020-10-29 03:45:16,938 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 223 transitions. Word has length 211 [2020-10-29 03:45:16,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:16,938 INFO L481 AbstractCegarLoop]: Abstraction has 218 states and 223 transitions. [2020-10-29 03:45:16,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-29 03:45:16,938 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 223 transitions. [2020-10-29 03:45:16,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-29 03:45:16,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:16,939 INFO L422 BasicCegarLoop]: trace histogram [32, 32, 32, 32, 32, 32, 1, 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 03:45:16,939 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:45:16,940 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:16,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:16,940 INFO L82 PathProgramCache]: Analyzing trace with hash 463193010, now seen corresponding path program 32 times [2020-10-29 03:45:16,940 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:16,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1979903771] [2020-10-29 03:45:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:17,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:17,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:22,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 227 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:45:22,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:22,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:22,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:22,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:22,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:22,957 INFO L134 CoverageAnalysis]: Checked inductivity of 3168 backedges. 0 proven. 528 refuted. 0 times theorem prover too weak. 2640 trivial. 0 not checked. [2020-10-29 03:45:22,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1979903771] [2020-10-29 03:45:22,957 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:22,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-29 03:45:22,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245029019] [2020-10-29 03:45:22,958 INFO L461 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-29 03:45:22,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:22,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-29 03:45:22,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:22,960 INFO L87 Difference]: Start difference. First operand 218 states and 223 transitions. Second operand 36 states. [2020-10-29 03:45:23,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:23,709 INFO L93 Difference]: Finished difference Result 403 states and 418 transitions. [2020-10-29 03:45:23,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:45:23,709 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 217 [2020-10-29 03:45:23,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:23,711 INFO L225 Difference]: With dead ends: 403 [2020-10-29 03:45:23,711 INFO L226 Difference]: Without dead ends: 224 [2020-10-29 03:45:23,712 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-29 03:45:23,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-29 03:45:23,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 224. [2020-10-29 03:45:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 224 states. [2020-10-29 03:45:23,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 229 transitions. [2020-10-29 03:45:23,776 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 229 transitions. Word has length 217 [2020-10-29 03:45:23,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:23,776 INFO L481 AbstractCegarLoop]: Abstraction has 224 states and 229 transitions. [2020-10-29 03:45:23,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-29 03:45:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 229 transitions. [2020-10-29 03:45:23,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2020-10-29 03:45:23,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:23,778 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 33, 33, 33, 33, 1, 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 03:45:23,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:45:23,778 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:23,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:23,779 INFO L82 PathProgramCache]: Analyzing trace with hash -94178353, now seen corresponding path program 33 times [2020-10-29 03:45:23,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:23,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1778360939] [2020-10-29 03:45:23,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:23,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:24,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:28,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:28,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:45:28,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:29,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:29,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:29,948 INFO L134 CoverageAnalysis]: Checked inductivity of 3366 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 2805 trivial. 0 not checked. [2020-10-29 03:45:29,948 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1778360939] [2020-10-29 03:45:29,948 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:29,948 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-29 03:45:29,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395943821] [2020-10-29 03:45:29,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-29 03:45:29,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:29,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-29 03:45:29,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:29,950 INFO L87 Difference]: Start difference. First operand 224 states and 229 transitions. Second operand 37 states. [2020-10-29 03:45:30,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:30,719 INFO L93 Difference]: Finished difference Result 414 states and 429 transitions. [2020-10-29 03:45:30,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:45:30,719 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 223 [2020-10-29 03:45:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:30,721 INFO L225 Difference]: With dead ends: 414 [2020-10-29 03:45:30,721 INFO L226 Difference]: Without dead ends: 230 [2020-10-29 03:45:30,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 03:45:30,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2020-10-29 03:45:30,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2020-10-29 03:45:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-29 03:45:30,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 235 transitions. [2020-10-29 03:45:30,742 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 235 transitions. Word has length 223 [2020-10-29 03:45:30,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:30,742 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 235 transitions. [2020-10-29 03:45:30,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-29 03:45:30,742 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 235 transitions. [2020-10-29 03:45:30,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 03:45:30,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:30,743 INFO L422 BasicCegarLoop]: trace histogram [34, 34, 34, 34, 34, 34, 1, 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 03:45:30,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:45:30,744 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:30,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:30,744 INFO L82 PathProgramCache]: Analyzing trace with hash -392498222, now seen corresponding path program 34 times [2020-10-29 03:45:30,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:30,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [771280327] [2020-10-29 03:45:30,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:30,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:31,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:35,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:35,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 03:45:35,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:35,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 03:45:35,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:35,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-29 03:45:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:45:35,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-29 03:45:35,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:36,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:36,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:36,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:36,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:36,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:36,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:36,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:36,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:36,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:36,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:36,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:36,907 INFO L134 CoverageAnalysis]: Checked inductivity of 3570 backedges. 0 proven. 595 refuted. 0 times theorem prover too weak. 2975 trivial. 0 not checked. [2020-10-29 03:45:36,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [771280327] [2020-10-29 03:45:36,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:36,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-29 03:45:36,908 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981351676] [2020-10-29 03:45:36,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-29 03:45:36,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:36,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-29 03:45:36,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:36,909 INFO L87 Difference]: Start difference. First operand 230 states and 235 transitions. Second operand 38 states. [2020-10-29 03:45:37,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:37,718 INFO L93 Difference]: Finished difference Result 425 states and 440 transitions. [2020-10-29 03:45:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:45:37,719 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 229 [2020-10-29 03:45:37,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:37,720 INFO L225 Difference]: With dead ends: 425 [2020-10-29 03:45:37,721 INFO L226 Difference]: Without dead ends: 236 [2020-10-29 03:45:37,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:45:37,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-29 03:45:37,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2020-10-29 03:45:37,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 236 states. [2020-10-29 03:45:37,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 241 transitions. [2020-10-29 03:45:37,742 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 241 transitions. Word has length 229 [2020-10-29 03:45:37,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:37,743 INFO L481 AbstractCegarLoop]: Abstraction has 236 states and 241 transitions. [2020-10-29 03:45:37,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-29 03:45:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 241 transitions. [2020-10-29 03:45:37,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2020-10-29 03:45:37,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:37,745 INFO L422 BasicCegarLoop]: trace histogram [35, 35, 35, 35, 35, 35, 1, 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 03:45:37,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:45:37,745 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -931184081, now seen corresponding path program 35 times [2020-10-29 03:45:37,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:37,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445092388] [2020-10-29 03:45:37,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:37,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:38,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:42,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:42,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:45:42,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:43,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:43,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:43,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:43,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:43,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:43,946 INFO L134 CoverageAnalysis]: Checked inductivity of 3780 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 3150 trivial. 0 not checked. [2020-10-29 03:45:43,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445092388] [2020-10-29 03:45:43,946 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:43,946 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-29 03:45:43,946 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897319766] [2020-10-29 03:45:43,947 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-29 03:45:43,947 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:43,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-29 03:45:43,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:43,948 INFO L87 Difference]: Start difference. First operand 236 states and 241 transitions. Second operand 39 states. [2020-10-29 03:45:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:44,774 INFO L93 Difference]: Finished difference Result 436 states and 451 transitions. [2020-10-29 03:45:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:45:44,774 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 235 [2020-10-29 03:45:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:44,776 INFO L225 Difference]: With dead ends: 436 [2020-10-29 03:45:44,776 INFO L226 Difference]: Without dead ends: 242 [2020-10-29 03:45:44,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:45:44,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-29 03:45:44,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-10-29 03:45:44,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-10-29 03:45:44,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 247 transitions. [2020-10-29 03:45:44,794 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 247 transitions. Word has length 235 [2020-10-29 03:45:44,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:44,794 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 247 transitions. [2020-10-29 03:45:44,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-10-29 03:45:44,795 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 247 transitions. [2020-10-29 03:45:44,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-10-29 03:45:44,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:44,796 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 36, 36, 36, 36, 1, 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 03:45:44,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:45:44,796 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:44,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:44,797 INFO L82 PathProgramCache]: Analyzing trace with hash 1331321842, now seen corresponding path program 36 times [2020-10-29 03:45:44,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:44,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1550124619] [2020-10-29 03:45:44,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:44,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:44,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:45,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:49,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:49,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 251 [2020-10-29 03:45:49,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 03:45:49,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:51,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:45:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:45:51,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:45:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:45:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:45:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 3996 backedges. 0 proven. 666 refuted. 0 times theorem prover too weak. 3330 trivial. 0 not checked. [2020-10-29 03:45:51,088 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1550124619] [2020-10-29 03:45:51,088 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:45:51,088 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [40] total 40 [2020-10-29 03:45:51,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034029595] [2020-10-29 03:45:51,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 40 states [2020-10-29 03:45:51,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:45:51,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2020-10-29 03:45:51,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:45:51,090 INFO L87 Difference]: Start difference. First operand 242 states and 247 transitions. Second operand 40 states. [2020-10-29 03:45:51,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:45:51,953 INFO L93 Difference]: Finished difference Result 447 states and 462 transitions. [2020-10-29 03:45:51,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 03:45:51,954 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 241 [2020-10-29 03:45:51,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:45:51,957 INFO L225 Difference]: With dead ends: 447 [2020-10-29 03:45:51,957 INFO L226 Difference]: Without dead ends: 248 [2020-10-29 03:45:51,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=743, Invalid=817, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 03:45:51,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-29 03:45:51,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2020-10-29 03:45:51,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-29 03:45:51,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 253 transitions. [2020-10-29 03:45:51,982 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 253 transitions. Word has length 241 [2020-10-29 03:45:51,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:45:51,982 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 253 transitions. [2020-10-29 03:45:51,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 40 states. [2020-10-29 03:45:51,982 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 253 transitions. [2020-10-29 03:45:51,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-10-29 03:45:51,984 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:45:51,984 INFO L422 BasicCegarLoop]: trace histogram [37, 37, 37, 37, 37, 37, 1, 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 03:45:51,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:45:51,985 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:45:51,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:45:51,985 INFO L82 PathProgramCache]: Analyzing trace with hash -796419953, now seen corresponding path program 37 times [2020-10-29 03:45:51,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:45:51,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4668138] [2020-10-29 03:45:51,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:45:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:45:52,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking...