/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/eca-rers2012/Problem17_label24.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:16:10,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:16:10,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:16:10,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:16:10,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:16:10,191 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:16:10,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:16:10,198 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:16:10,202 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:16:10,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:16:10,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:16:10,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:16:10,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:16:10,216 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:16:10,218 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:16:10,220 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:16:10,221 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:16:10,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:16:10,232 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:16:10,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:16:10,273 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:16:10,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:16:10,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:16:10,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:16:10,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:16:10,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:16:10,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:16:10,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:16:10,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:16:10,305 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:16:10,306 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:16:10,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:16:10,308 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:16:10,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:16:10,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:16:10,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:16:10,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:16:10,311 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:16:10,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:16:10,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:16:10,314 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:16:10,321 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 08:16:10,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:16:10,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:16:10,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:16:10,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:16:10,377 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:16:10,377 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:16:10,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:16:10,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:16:10,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:16:10,378 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:16:10,378 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:16:10,379 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:16:10,379 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:16:10,379 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:16:10,379 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:16:10,379 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:16:10,380 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:16:10,380 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:16:10,380 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:16:10,380 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:16:10,380 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:16:10,381 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:16:10,381 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:16:10,381 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:16:10,381 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:16:10,382 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:16:10,382 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:16:10,382 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:16:10,382 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:16:10,382 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:16:10,829 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:16:10,859 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:16:10,862 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:16:10,864 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:16:10,864 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:16:10,865 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-29 08:16:10,957 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b6dbf1b/04cd824f0e8a462f9f6b306e8944e7a7/FLAGc5bb971f1 [2020-10-29 08:16:11,763 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:16:11,763 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label24.c [2020-10-29 08:16:11,795 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b6dbf1b/04cd824f0e8a462f9f6b306e8944e7a7/FLAGc5bb971f1 [2020-10-29 08:16:11,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b1b6dbf1b/04cd824f0e8a462f9f6b306e8944e7a7 [2020-10-29 08:16:11,886 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:16:11,893 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:16:11,894 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:16:11,895 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:16:11,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:16:11,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:16:11" (1/1) ... [2020-10-29 08:16:11,910 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4233ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:11, skipping insertion in model container [2020-10-29 08:16:11,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:16:11" (1/1) ... [2020-10-29 08:16:11,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:16:12,046 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:16:13,110 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:16:13,168 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:16:13,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:16:13,898 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:16:13,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13 WrapperNode [2020-10-29 08:16:13,899 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:16:13,901 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:16:13,901 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:16:13,901 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:16:13,914 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:13,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:13,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:13,988 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:14,102 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:14,184 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:14,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (1/1) ... [2020-10-29 08:16:14,231 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:16:14,233 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:16:14,234 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:16:14,234 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:16:14,235 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (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 08:16:14,320 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:16:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:16:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:16:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:16:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:16:14,321 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:16:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:16:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:16:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:16:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:16:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:16:14,322 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:16:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:16:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:16:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:16:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:16:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:16:14,323 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:16:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:16:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:16:14,324 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:16:23,594 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:16:23,594 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:16:23,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:16:23 BoogieIcfgContainer [2020-10-29 08:16:23,597 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:16:23,599 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:16:23,599 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:16:23,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:16:23,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:16:11" (1/3) ... [2020-10-29 08:16:23,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696eceb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:16:23, skipping insertion in model container [2020-10-29 08:16:23,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:16:13" (2/3) ... [2020-10-29 08:16:23,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@696eceb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:16:23, skipping insertion in model container [2020-10-29 08:16:23,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:16:23" (3/3) ... [2020-10-29 08:16:23,606 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label24.c [2020-10-29 08:16:23,618 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:16:23,624 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:16:23,637 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:16:23,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:16:23,669 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:16:23,670 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:16:23,670 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:16:23,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:16:23,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:16:23,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:16:23,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:16:23,701 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:16:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 08:16:23,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:23,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:23,712 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:23,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:23,719 INFO L82 PathProgramCache]: Analyzing trace with hash 313865979, now seen corresponding path program 1 times [2020-10-29 08:16:23,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:23,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1724932671] [2020-10-29 08:16:23,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:23,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:24,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:24,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:24,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 08:16:24,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:24,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 689 [2020-10-29 08:16:24,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:24,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:16:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:24,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 08:16:24,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:16:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:24,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:24,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:24,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:24,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:24,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:16:24,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:24,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:24,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:24,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:24,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:24,895 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 08:16:24,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1724932671] [2020-10-29 08:16:24,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:16:24,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:16:24,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991202359] [2020-10-29 08:16:24,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:16:24,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:24,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:16:24,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:16:24,924 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:16:39,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:39,012 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-29 08:16:39,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:16:39,015 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-29 08:16:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:39,041 INFO L225 Difference]: With dead ends: 1694 [2020-10-29 08:16:39,041 INFO L226 Difference]: Without dead ends: 1010 [2020-10-29 08:16:39,053 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:16:39,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-29 08:16:39,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-29 08:16:39,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-29 08:16:39,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-29 08:16:39,187 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 67 [2020-10-29 08:16:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:39,188 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-29 08:16:39,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:16:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-29 08:16:39,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-29 08:16:39,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:39,203 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:39,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:16:39,204 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:39,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:39,206 INFO L82 PathProgramCache]: Analyzing trace with hash 311964026, now seen corresponding path program 1 times [2020-10-29 08:16:39,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:39,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719193639] [2020-10-29 08:16:39,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:39,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:39,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:39,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:42,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:42,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 08:16:42,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:16:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3529 [2020-10-29 08:16:42,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:42,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:42,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:16:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:42,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-29 08:16:42,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 08:16:42,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:43,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:43,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:43,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:43,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:43,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 08:16:43,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:43,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:43,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:43,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:43,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 08:16:43,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:43,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:43,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:43,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:43,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:16:43,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:16:43,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-29 08:16:43,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:43,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:43,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:16:43,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:43,496 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:16:43,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719193639] [2020-10-29 08:16:43,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:43,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:16:43,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402084035] [2020-10-29 08:16:43,499 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:16:43,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:43,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:16:43,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:16:43,505 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 6 states. [2020-10-29 08:16:59,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:59,135 INFO L93 Difference]: Finished difference Result 2453 states and 3905 transitions. [2020-10-29 08:16:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 08:16:59,139 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 138 [2020-10-29 08:16:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:59,148 INFO L225 Difference]: With dead ends: 2453 [2020-10-29 08:16:59,148 INFO L226 Difference]: Without dead ends: 1467 [2020-10-29 08:16:59,151 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:16:59,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2020-10-29 08:16:59,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 1453. [2020-10-29 08:16:59,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1453 states. [2020-10-29 08:16:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1453 states to 1453 states and 1975 transitions. [2020-10-29 08:16:59,193 INFO L78 Accepts]: Start accepts. Automaton has 1453 states and 1975 transitions. Word has length 138 [2020-10-29 08:16:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:59,194 INFO L481 AbstractCegarLoop]: Abstraction has 1453 states and 1975 transitions. [2020-10-29 08:16:59,194 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:16:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1453 states and 1975 transitions. [2020-10-29 08:16:59,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-29 08:16:59,196 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:59,196 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:59,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:16:59,197 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:59,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:59,197 INFO L82 PathProgramCache]: Analyzing trace with hash 1059269999, now seen corresponding path program 1 times [2020-10-29 08:16:59,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:59,198 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532472340] [2020-10-29 08:16:59,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:04,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:04,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-29 08:17:04,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:17:04,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-29 08:17:04,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:04,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:17:04,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:17:04,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:17:04,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:17:04,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:04,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:04,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:04,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:04,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:17:04,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:04,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:04,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:17:04,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:17:04,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:04,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:04,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:04,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:17:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-10-29 08:17:04,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:04,804 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:17:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:04,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:17:04,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:17:04,994 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 34 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:17:04,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532472340] [2020-10-29 08:17:04,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:04,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:17:04,996 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523269762] [2020-10-29 08:17:04,998 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:17:04,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:04,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:17:05,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:17:05,000 INFO L87 Difference]: Start difference. First operand 1453 states and 1975 transitions. Second operand 8 states. [2020-10-29 08:17:22,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:22,638 INFO L93 Difference]: Finished difference Result 3033 states and 4471 transitions. [2020-10-29 08:17:22,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:17:22,640 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 141 [2020-10-29 08:17:22,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:22,653 INFO L225 Difference]: With dead ends: 3033 [2020-10-29 08:17:22,653 INFO L226 Difference]: Without dead ends: 1976 [2020-10-29 08:17:22,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:17:22,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1976 states. [2020-10-29 08:17:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1976 to 1930. [2020-10-29 08:17:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1930 states. [2020-10-29 08:17:22,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1930 states to 1930 states and 2731 transitions. [2020-10-29 08:17:22,721 INFO L78 Accepts]: Start accepts. Automaton has 1930 states and 2731 transitions. Word has length 141 [2020-10-29 08:17:22,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:22,725 INFO L481 AbstractCegarLoop]: Abstraction has 1930 states and 2731 transitions. [2020-10-29 08:17:22,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:17:22,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1930 states and 2731 transitions. [2020-10-29 08:17:22,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 08:17:22,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:22,730 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:22,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:17:22,730 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:22,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1176589850, now seen corresponding path program 1 times [2020-10-29 08:17:22,733 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:22,733 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157486818] [2020-10-29 08:17:22,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:22,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:22,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:23,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:23,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-29 08:17:23,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:23,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 357 [2020-10-29 08:17:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:23,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:23,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:17:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 08:17:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:23,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:23,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:23,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:17:23,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:23,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:17:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:17:23,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:23,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:23,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:23,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:23,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:23,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:23,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 08:17:23,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:23,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:23,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:17:23,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:17:23,508 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 58 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:17:23,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157486818] [2020-10-29 08:17:23,509 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:23,509 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:17:23,510 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781758515] [2020-10-29 08:17:23,510 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:17:23,510 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:23,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:17:23,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:17:23,511 INFO L87 Difference]: Start difference. First operand 1930 states and 2731 transitions. Second operand 5 states. [2020-10-29 08:17:37,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:37,790 INFO L93 Difference]: Finished difference Result 4775 states and 7138 transitions. [2020-10-29 08:17:37,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:17:37,792 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-10-29 08:17:37,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:37,813 INFO L225 Difference]: With dead ends: 4775 [2020-10-29 08:17:37,813 INFO L226 Difference]: Without dead ends: 3284 [2020-10-29 08:17:37,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:17:37,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3284 states. [2020-10-29 08:17:37,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3284 to 3267. [2020-10-29 08:17:37,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3267 states. [2020-10-29 08:17:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3267 states to 3267 states and 4801 transitions. [2020-10-29 08:17:37,927 INFO L78 Accepts]: Start accepts. Automaton has 3267 states and 4801 transitions. Word has length 154 [2020-10-29 08:17:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:37,927 INFO L481 AbstractCegarLoop]: Abstraction has 3267 states and 4801 transitions. [2020-10-29 08:17:37,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:17:37,928 INFO L276 IsEmpty]: Start isEmpty. Operand 3267 states and 4801 transitions. [2020-10-29 08:17:37,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 230 [2020-10-29 08:17:37,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:37,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:37,933 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:17:37,933 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:37,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:37,934 INFO L82 PathProgramCache]: Analyzing trace with hash -940352189, now seen corresponding path program 1 times [2020-10-29 08:17:37,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:37,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522331906] [2020-10-29 08:17:37,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:37,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:38,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:38,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:38,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:43,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:43,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-29 08:17:43,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:17:43,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 08:17:43,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:43,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:17:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:17:43,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-29 08:17:43,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:43,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:43,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:43,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:43,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:43,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:43,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 08:17:43,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:43,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:43,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:43,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:17:43,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:43,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:43,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:43,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:43,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:43,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:43,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-10-29 08:17:43,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:43,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:17:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:43,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:17:43,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:43,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:43,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:43,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:43,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:43,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 08:17:43,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:43,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-29 08:17:43,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:43,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:43,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:43,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 08:17:43,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:44,013 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 187 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 08:17:44,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522331906] [2020-10-29 08:17:44,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:44,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 08:17:44,014 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990030472] [2020-10-29 08:17:44,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 08:17:44,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:44,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 08:17:44,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:17:44,016 INFO L87 Difference]: Start difference. First operand 3267 states and 4801 transitions. Second operand 10 states. [2020-10-29 08:17:44,218 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 66 [2020-10-29 08:17:48,758 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:18:03,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:18:03,015 INFO L93 Difference]: Finished difference Result 8001 states and 12541 transitions. [2020-10-29 08:18:03,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:18:03,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 229 [2020-10-29 08:18:03,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:18:03,045 INFO L225 Difference]: With dead ends: 8001 [2020-10-29 08:18:03,045 INFO L226 Difference]: Without dead ends: 5173 [2020-10-29 08:18:03,054 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=89, Invalid=253, Unknown=0, NotChecked=0, Total=342 [2020-10-29 08:18:03,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5173 states. [2020-10-29 08:18:03,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5173 to 4203. [2020-10-29 08:18:03,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4203 states. [2020-10-29 08:18:03,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4203 states to 4203 states and 5977 transitions. [2020-10-29 08:18:03,232 INFO L78 Accepts]: Start accepts. Automaton has 4203 states and 5977 transitions. Word has length 229 [2020-10-29 08:18:03,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:18:03,234 INFO L481 AbstractCegarLoop]: Abstraction has 4203 states and 5977 transitions. [2020-10-29 08:18:03,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 08:18:03,234 INFO L276 IsEmpty]: Start isEmpty. Operand 4203 states and 5977 transitions. [2020-10-29 08:18:03,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-29 08:18:03,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:03,240 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:18:03,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:18:03,241 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:03,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:03,241 INFO L82 PathProgramCache]: Analyzing trace with hash -112811225, now seen corresponding path program 1 times [2020-10-29 08:18:03,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:03,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684439424] [2020-10-29 08:18:03,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:03,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:03,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:03,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:04,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:05,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:06,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:06,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 245 [2020-10-29 08:18:06,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:18:06,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2742 [2020-10-29 08:18:06,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:06,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:18:06,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:18:06,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 236 [2020-10-29 08:18:06,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:06,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:06,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:06,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:06,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:06,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:06,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:06,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:18:06,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:06,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:06,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:18:06,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:06,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:18:06,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:06,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:06,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:06,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:18:06,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:06,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-29 08:18:06,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:06,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:18:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:18:06,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:18:06,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:06,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:18:06,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:06,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:06,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:18:06,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-29 08:18:06,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:06,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:06,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:18:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:18:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:06,868 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 08:18:06,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684439424] [2020-10-29 08:18:06,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:18:06,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:18:06,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533688393] [2020-10-29 08:18:06,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 08:18:06,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:06,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 08:18:06,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-10-29 08:18:06,880 INFO L87 Difference]: Start difference. First operand 4203 states and 5977 transitions. Second operand 8 states. [2020-10-29 08:18:25,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:18:25,723 INFO L93 Difference]: Finished difference Result 10797 states and 16193 transitions. [2020-10-29 08:18:25,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:18:25,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-10-29 08:18:25,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:18:25,757 INFO L225 Difference]: With dead ends: 10797 [2020-10-29 08:18:25,757 INFO L226 Difference]: Without dead ends: 7033 [2020-10-29 08:18:25,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:18:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7033 states. [2020-10-29 08:18:25,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7033 to 6019. [2020-10-29 08:18:25,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6019 states. [2020-10-29 08:18:25,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6019 states to 6019 states and 8352 transitions. [2020-10-29 08:18:25,931 INFO L78 Accepts]: Start accepts. Automaton has 6019 states and 8352 transitions. Word has length 231 [2020-10-29 08:18:25,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:18:25,932 INFO L481 AbstractCegarLoop]: Abstraction has 6019 states and 8352 transitions. [2020-10-29 08:18:25,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 08:18:25,932 INFO L276 IsEmpty]: Start isEmpty. Operand 6019 states and 8352 transitions. [2020-10-29 08:18:25,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-10-29 08:18:25,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:25,937 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:18:25,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:18:25,937 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:25,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:25,938 INFO L82 PathProgramCache]: Analyzing trace with hash -231871731, now seen corresponding path program 1 times [2020-10-29 08:18:25,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:25,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217459933] [2020-10-29 08:18:25,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:25,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:26,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:26,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:31,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:31,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-29 08:18:31,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:18:31,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-29 08:18:31,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:31,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:31,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:18:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:18:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-29 08:18:31,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:31,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:31,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:31,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:31,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:31,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:31,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 08:18:31,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:31,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:18:31,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:31,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:18:31,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:31,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:18:31,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:31,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:31,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:31,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:18:31,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:31,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 08:18:31,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:31,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:31,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:18:31,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:31,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:18:31,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:31,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:31,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:31,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:18:31,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:18:31,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-29 08:18:31,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:31,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:31,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:18:31,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:31,739 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:18:31,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217459933] [2020-10-29 08:18:31,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:18:31,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:18:31,740 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843038088] [2020-10-29 08:18:31,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:18:31,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:31,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:18:31,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:18:31,743 INFO L87 Difference]: Start difference. First operand 6019 states and 8352 transitions. Second operand 5 states. [2020-10-29 08:18:44,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:18:44,638 INFO L93 Difference]: Finished difference Result 12446 states and 17380 transitions. [2020-10-29 08:18:44,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:18:44,647 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 240 [2020-10-29 08:18:44,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:18:44,692 INFO L225 Difference]: With dead ends: 12446 [2020-10-29 08:18:44,692 INFO L226 Difference]: Without dead ends: 9136 [2020-10-29 08:18:44,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:18:44,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9136 states. [2020-10-29 08:18:44,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9136 to 6021. [2020-10-29 08:18:44,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6021 states. [2020-10-29 08:18:44,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6021 states to 6021 states and 8354 transitions. [2020-10-29 08:18:44,891 INFO L78 Accepts]: Start accepts. Automaton has 6021 states and 8354 transitions. Word has length 240 [2020-10-29 08:18:44,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:18:44,892 INFO L481 AbstractCegarLoop]: Abstraction has 6021 states and 8354 transitions. [2020-10-29 08:18:44,892 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:18:44,892 INFO L276 IsEmpty]: Start isEmpty. Operand 6021 states and 8354 transitions. [2020-10-29 08:18:44,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 08:18:44,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:44,897 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:18:44,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:18:44,898 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:44,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:44,898 INFO L82 PathProgramCache]: Analyzing trace with hash -887766872, now seen corresponding path program 1 times [2020-10-29 08:18:44,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:44,900 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950024927] [2020-10-29 08:18:44,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:44,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:45,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:45,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:45,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:49,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:49,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:49,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 08:18:49,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:18:49,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 08:18:49,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:49,942 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:18:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:18:49,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-29 08:18:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:50,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:50,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:50,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:50,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:50,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:50,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:50,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:18:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:50,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:50,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:18:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:50,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:18:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:50,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:50,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:50,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 08:18:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:18:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 374 [2020-10-29 08:18:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:50,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:18:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 08:18:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:50,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-29 08:18:50,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:50,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:18:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-29 08:18:50,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:50,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:50,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:18:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:18:50,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:50,893 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 191 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 08:18:50,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950024927] [2020-10-29 08:18:50,894 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:18:50,894 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-29 08:18:50,894 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2127871358] [2020-10-29 08:18:50,895 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:18:50,895 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:50,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:18:50,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:18:50,896 INFO L87 Difference]: Start difference. First operand 6021 states and 8354 transitions. Second operand 9 states. [2020-10-29 08:19:10,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:10,454 INFO L93 Difference]: Finished difference Result 14982 states and 21132 transitions. [2020-10-29 08:19:10,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:19:10,456 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 259 [2020-10-29 08:19:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:10,483 INFO L225 Difference]: With dead ends: 14982 [2020-10-29 08:19:10,483 INFO L226 Difference]: Without dead ends: 9405 [2020-10-29 08:19:10,499 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2020-10-29 08:19:10,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9405 states. [2020-10-29 08:19:10,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9405 to 6957. [2020-10-29 08:19:10,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6957 states. [2020-10-29 08:19:10,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6957 states to 6957 states and 9007 transitions. [2020-10-29 08:19:10,728 INFO L78 Accepts]: Start accepts. Automaton has 6957 states and 9007 transitions. Word has length 259 [2020-10-29 08:19:10,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:10,728 INFO L481 AbstractCegarLoop]: Abstraction has 6957 states and 9007 transitions. [2020-10-29 08:19:10,729 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:19:10,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6957 states and 9007 transitions. [2020-10-29 08:19:10,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 312 [2020-10-29 08:19:10,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:10,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:19:10,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:19:10,737 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:10,738 INFO L82 PathProgramCache]: Analyzing trace with hash -863128280, now seen corresponding path program 1 times [2020-10-29 08:19:10,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:10,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660274278] [2020-10-29 08:19:10,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:10,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:10,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:11,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:11,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:15,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:15,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 08:19:15,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:19:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 08:19:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:15,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:19:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:19:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 318 [2020-10-29 08:19:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:15,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:15,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:15,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:15,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:15,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 08:19:15,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:15,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:15,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:19:15,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:16,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:16,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:16,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:16,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:16,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:19:16,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:19:16,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:16,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:19:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:16,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:16,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:16,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:19:16,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:16,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:19:16,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:16,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:16,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:19:16,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:16,615 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 152 proven. 172 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-29 08:19:16,615 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660274278] [2020-10-29 08:19:16,615 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:16,616 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:19:16,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164520647] [2020-10-29 08:19:16,617 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:19:16,617 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:16,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:19:16,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:19:16,618 INFO L87 Difference]: Start difference. First operand 6957 states and 9007 transitions. Second operand 9 states. [2020-10-29 08:19:41,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:19:41,330 INFO L93 Difference]: Finished difference Result 18254 states and 24723 transitions. [2020-10-29 08:19:41,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 08:19:41,334 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 311 [2020-10-29 08:19:41,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:19:41,376 INFO L225 Difference]: With dead ends: 18254 [2020-10-29 08:19:41,376 INFO L226 Difference]: Without dead ends: 11743 [2020-10-29 08:19:41,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:19:41,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11743 states. [2020-10-29 08:19:41,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11743 to 10599. [2020-10-29 08:19:41,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10599 states. [2020-10-29 08:19:41,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10599 states to 10599 states and 13534 transitions. [2020-10-29 08:19:41,726 INFO L78 Accepts]: Start accepts. Automaton has 10599 states and 13534 transitions. Word has length 311 [2020-10-29 08:19:41,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:19:41,727 INFO L481 AbstractCegarLoop]: Abstraction has 10599 states and 13534 transitions. [2020-10-29 08:19:41,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:19:41,727 INFO L276 IsEmpty]: Start isEmpty. Operand 10599 states and 13534 transitions. [2020-10-29 08:19:41,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 318 [2020-10-29 08:19:41,735 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:19:41,735 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:19:41,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 08:19:41,736 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:19:41,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:19:41,736 INFO L82 PathProgramCache]: Analyzing trace with hash 539691284, now seen corresponding path program 1 times [2020-10-29 08:19:41,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:19:41,737 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228766012] [2020-10-29 08:19:41,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:19:41,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:41,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:41,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:42,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:43,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:45,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:45,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4157 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 08:19:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:46,142 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:19:46,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:19:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:46,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:46,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:19:46,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:46,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:19:46,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:46,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:46,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:19:46,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:46,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 08:19:46,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:46,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:19:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:46,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:19:46,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:46,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:19:46,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:46,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:46,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:46,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:19:46,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:19:46,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-29 08:19:46,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:46,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:19:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:19:46,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:19:46,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:46,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:19:46,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:19:46,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:46,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:19:46,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:19:46,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:19:46,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:19:46,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 08:19:46,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:19:46,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:19:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:19:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:19:46,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:19:46,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:19:46,686 INFO L134 CoverageAnalysis]: Checked inductivity of 417 backedges. 268 proven. 60 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 08:19:46,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228766012] [2020-10-29 08:19:46,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:19:46,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:19:46,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978443898] [2020-10-29 08:19:46,688 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:19:46,688 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:19:46,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:19:46,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:19:46,689 INFO L87 Difference]: Start difference. First operand 10599 states and 13534 transitions. Second operand 6 states.