/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=SHALLOWEST --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/Problem14_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:19:35,161 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:19:35,166 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:19:35,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:19:35,224 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:19:35,231 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:19:35,233 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:19:35,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:19:35,241 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:19:35,248 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:19:35,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:19:35,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:19:35,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:19:35,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:19:35,258 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:19:35,260 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:19:35,262 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:19:35,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:19:35,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:19:35,281 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:19:35,282 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:19:35,284 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:19:35,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:19:35,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:19:35,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:19:35,297 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:19:35,297 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:19:35,299 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:19:35,300 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:19:35,301 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:19:35,301 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:19:35,302 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:19:35,311 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:19:35,312 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:19:35,316 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:19:35,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:19:35,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:19:35,317 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:19:35,317 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:19:35,318 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:19:35,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:19:35,320 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 [2020-10-26 23:19:35,346 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:19:35,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:19:35,348 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:19:35,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:19:35,348 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:19:35,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:19:35,349 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:19:35,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:19:35,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:19:35,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:19:35,349 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:19:35,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:19:35,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:19:35,350 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:19:35,350 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:19:35,350 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:19:35,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:19:35,351 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:19:35,351 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:19:35,351 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:19:35,351 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:19:35,352 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:19:35,352 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:19:35,352 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:19:35,352 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:19:35,352 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:19:35,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:19:35,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:19:35,353 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:19:35,353 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:19:35,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:19:35,810 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:19:35,814 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:19:35,815 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:19:35,819 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:19:35,820 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-10-26 23:19:35,910 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/804d3c2a3/f06baefc6b2e47039a690ac2ecb623aa/FLAG08aa09d12 [2020-10-26 23:19:36,670 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:19:36,672 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label01.c [2020-10-26 23:19:36,698 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/804d3c2a3/f06baefc6b2e47039a690ac2ecb623aa/FLAG08aa09d12 [2020-10-26 23:19:36,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/804d3c2a3/f06baefc6b2e47039a690ac2ecb623aa [2020-10-26 23:19:36,921 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:19:36,929 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:19:36,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:19:36,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:19:36,935 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:19:36,936 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:19:36" (1/1) ... [2020-10-26 23:19:36,939 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ceb0f75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:36, skipping insertion in model container [2020-10-26 23:19:36,940 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:19:36" (1/1) ... [2020-10-26 23:19:36,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:19:36,997 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:19:37,527 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:19:37,541 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:19:37,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:19:37,740 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:19:37,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37 WrapperNode [2020-10-26 23:19:37,742 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:19:37,744 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:19:37,744 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:19:37,744 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:19:37,760 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,762 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,805 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,900 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,932 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (1/1) ... [2020-10-26 23:19:37,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:19:37,942 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:19:37,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:19:37,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:19:37,944 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (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 [2020-10-26 23:19:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:19:38,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:19:38,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:19:38,026 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:19:38,026 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:19:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:19:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:19:38,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:19:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:19:38,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:19:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:19:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:19:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:19:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:19:38,029 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:19:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:19:38,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:19:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:19:38,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:19:39,497 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:19:39,497 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:19:39,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:19:39 BoogieIcfgContainer [2020-10-26 23:19:39,500 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:19:39,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:19:39,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:19:39,505 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:19:39,506 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:19:36" (1/3) ... [2020-10-26 23:19:39,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a4d89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:19:39, skipping insertion in model container [2020-10-26 23:19:39,507 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:19:37" (2/3) ... [2020-10-26 23:19:39,507 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46a4d89c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:19:39, skipping insertion in model container [2020-10-26 23:19:39,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:19:39" (3/3) ... [2020-10-26 23:19:39,509 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label01.c [2020-10-26 23:19:39,521 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:19:39,527 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:19:39,540 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:19:39,570 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:19:39,571 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:19:39,571 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:19:39,571 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:19:39,571 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:19:39,571 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:19:39,572 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:19:39,572 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:19:39,596 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-26 23:19:39,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-26 23:19:39,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:39,607 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] [2020-10-26 23:19:39,607 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:39,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:39,614 INFO L82 PathProgramCache]: Analyzing trace with hash 767270766, now seen corresponding path program 1 times [2020-10-26 23:19:39,624 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:39,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516055701] [2020-10-26 23:19:39,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:39,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:40,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:40,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:19:40,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:40,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 545 [2020-10-26 23:19:40,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:40,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-26 23:19:40,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-26 23:19:40,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:40,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:40,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:40,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:40,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:40,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-26 23:19:40,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:40,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:40,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:40,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:40,686 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:40,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516055701] [2020-10-26 23:19:40,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:40,689 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:19:40,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295457455] [2020-10-26 23:19:40,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:19:40,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:40,717 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:19:40,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:19:40,720 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-26 23:19:42,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:42,780 INFO L93 Difference]: Finished difference Result 703 states and 1247 transitions. [2020-10-26 23:19:42,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:19:42,783 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-26 23:19:42,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:42,799 INFO L225 Difference]: With dead ends: 703 [2020-10-26 23:19:42,800 INFO L226 Difference]: Without dead ends: 381 [2020-10-26 23:19:42,810 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:19:42,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-26 23:19:42,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 375. [2020-10-26 23:19:42,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-10-26 23:19:42,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 605 transitions. [2020-10-26 23:19:42,901 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 605 transitions. Word has length 61 [2020-10-26 23:19:42,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:42,902 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 605 transitions. [2020-10-26 23:19:42,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:19:42,903 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 605 transitions. [2020-10-26 23:19:42,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-26 23:19:42,912 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:42,913 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:42,913 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:19:42,913 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:42,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:42,914 INFO L82 PathProgramCache]: Analyzing trace with hash 266371137, now seen corresponding path program 1 times [2020-10-26 23:19:42,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:42,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725879884] [2020-10-26 23:19:42,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:42,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:42,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:43,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:44,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:44,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:44,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-26 23:19:44,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:19:44,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1715 [2020-10-26 23:19:44,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:44,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:19:44,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:44,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:44,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:44,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:44,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:44,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:44,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:44,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:19:44,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:44,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:44,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:44,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:44,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:44,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:44,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:44,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:44,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:19:44,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:44,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:19:44,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:44,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:44,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:19:44,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:45,067 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:45,068 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725879884] [2020-10-26 23:19:45,068 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:45,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:19:45,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128518529] [2020-10-26 23:19:45,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:45,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:45,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:45,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:45,075 INFO L87 Difference]: Start difference. First operand 375 states and 605 transitions. Second operand 7 states. [2020-10-26 23:19:47,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:47,337 INFO L93 Difference]: Finished difference Result 1135 states and 1847 transitions. [2020-10-26 23:19:47,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:19:47,338 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-26 23:19:47,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:47,345 INFO L225 Difference]: With dead ends: 1135 [2020-10-26 23:19:47,346 INFO L226 Difference]: Without dead ends: 766 [2020-10-26 23:19:47,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:19:47,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2020-10-26 23:19:47,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 749. [2020-10-26 23:19:47,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 749 states. [2020-10-26 23:19:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1060 transitions. [2020-10-26 23:19:47,452 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1060 transitions. Word has length 130 [2020-10-26 23:19:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:47,453 INFO L481 AbstractCegarLoop]: Abstraction has 749 states and 1060 transitions. [2020-10-26 23:19:47,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1060 transitions. [2020-10-26 23:19:47,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-26 23:19:47,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:47,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:47,458 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:19:47,458 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:47,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:47,459 INFO L82 PathProgramCache]: Analyzing trace with hash -1924300889, now seen corresponding path program 1 times [2020-10-26 23:19:47,459 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:47,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70720429] [2020-10-26 23:19:47,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:47,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:47,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:48,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-26 23:19:48,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:19:48,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1029 [2020-10-26 23:19:48,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:48,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 23:19:48,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:48,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:48,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:48,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:48,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:19:48,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:48,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:48,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:48,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:48,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:48,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:48,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 23:19:48,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:48,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:19:48,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:19:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:48,919 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:48,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70720429] [2020-10-26 23:19:48,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:48,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-26 23:19:48,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128099257] [2020-10-26 23:19:48,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:19:48,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:48,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:19:48,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:19:48,927 INFO L87 Difference]: Start difference. First operand 749 states and 1060 transitions. Second operand 8 states. [2020-10-26 23:19:51,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:51,032 INFO L93 Difference]: Finished difference Result 1692 states and 2464 transitions. [2020-10-26 23:19:51,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-26 23:19:51,032 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 131 [2020-10-26 23:19:51,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:51,040 INFO L225 Difference]: With dead ends: 1692 [2020-10-26 23:19:51,041 INFO L226 Difference]: Without dead ends: 949 [2020-10-26 23:19:51,043 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:19:51,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2020-10-26 23:19:51,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 937. [2020-10-26 23:19:51,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 937 states. [2020-10-26 23:19:51,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 937 states to 937 states and 1252 transitions. [2020-10-26 23:19:51,103 INFO L78 Accepts]: Start accepts. Automaton has 937 states and 1252 transitions. Word has length 131 [2020-10-26 23:19:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:51,104 INFO L481 AbstractCegarLoop]: Abstraction has 937 states and 1252 transitions. [2020-10-26 23:19:51,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:19:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 937 states and 1252 transitions. [2020-10-26 23:19:51,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-26 23:19:51,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:51,108 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:51,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:19:51,109 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:51,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:51,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1699913673, now seen corresponding path program 1 times [2020-10-26 23:19:51,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:51,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [874320616] [2020-10-26 23:19:51,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:51,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:51,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:51,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:52,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:52,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:19:52,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:19:52,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1669 [2020-10-26 23:19:52,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:19:52,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:19:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:19:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:52,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:52,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:52,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:52,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:52,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:52,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:52,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:19:52,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:52,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:19:52,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:52,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:52,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:53,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:53,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 23:19:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:53,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-26 23:19:53,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:19:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 23:19:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:19:53,226 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:53,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [874320616] [2020-10-26 23:19:53,227 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:19:53,227 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:19:53,227 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541237282] [2020-10-26 23:19:53,228 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:19:53,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:53,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:19:53,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:19:53,231 INFO L87 Difference]: Start difference. First operand 937 states and 1252 transitions. Second operand 7 states. [2020-10-26 23:19:55,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:55,193 INFO L93 Difference]: Finished difference Result 1736 states and 2459 transitions. [2020-10-26 23:19:55,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:19:55,195 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 134 [2020-10-26 23:19:55,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:55,208 INFO L225 Difference]: With dead ends: 1736 [2020-10-26 23:19:55,208 INFO L226 Difference]: Without dead ends: 1173 [2020-10-26 23:19:55,212 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:19:55,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1173 states. [2020-10-26 23:19:55,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1173 to 1121. [2020-10-26 23:19:55,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1121 states. [2020-10-26 23:19:55,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1121 states to 1121 states and 1454 transitions. [2020-10-26 23:19:55,286 INFO L78 Accepts]: Start accepts. Automaton has 1121 states and 1454 transitions. Word has length 134 [2020-10-26 23:19:55,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:55,287 INFO L481 AbstractCegarLoop]: Abstraction has 1121 states and 1454 transitions. [2020-10-26 23:19:55,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:19:55,287 INFO L276 IsEmpty]: Start isEmpty. Operand 1121 states and 1454 transitions. [2020-10-26 23:19:55,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-10-26 23:19:55,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:55,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:19:55,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:19:55,291 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:55,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:55,292 INFO L82 PathProgramCache]: Analyzing trace with hash -774973693, now seen corresponding path program 1 times [2020-10-26 23:19:55,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:55,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358489670] [2020-10-26 23:19:55,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:55,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:55,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-10-26 23:19:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:19:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 325 [2020-10-26 23:19:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:55,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:19:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-26 23:19:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:19:55,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:55,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:55,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:19:55,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:55,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:19:55,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:55,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:19:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:55,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:19:55,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:55,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:19:55,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:55,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:55,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:19:55,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:19:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:19:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:19:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:19:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:19:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:19:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:19:55,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:19:55,865 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:19:55,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358489670] [2020-10-26 23:19:55,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:19:55,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 23:19:55,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204938462] [2020-10-26 23:19:55,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 23:19:55,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:19:55,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 23:19:55,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:19:55,868 INFO L87 Difference]: Start difference. First operand 1121 states and 1454 transitions. Second operand 5 states. [2020-10-26 23:19:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:19:57,833 INFO L93 Difference]: Finished difference Result 2432 states and 3353 transitions. [2020-10-26 23:19:57,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:19:57,837 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 145 [2020-10-26 23:19:57,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:19:57,848 INFO L225 Difference]: With dead ends: 2432 [2020-10-26 23:19:57,849 INFO L226 Difference]: Without dead ends: 1499 [2020-10-26 23:19:57,855 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 [2020-10-26 23:19:57,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1499 states. [2020-10-26 23:19:57,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1499 to 1311. [2020-10-26 23:19:57,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1311 states. [2020-10-26 23:19:57,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1311 states to 1311 states and 1698 transitions. [2020-10-26 23:19:57,911 INFO L78 Accepts]: Start accepts. Automaton has 1311 states and 1698 transitions. Word has length 145 [2020-10-26 23:19:57,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:19:57,912 INFO L481 AbstractCegarLoop]: Abstraction has 1311 states and 1698 transitions. [2020-10-26 23:19:57,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 23:19:57,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1311 states and 1698 transitions. [2020-10-26 23:19:57,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-10-26 23:19:57,920 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:19:57,920 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, 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] [2020-10-26 23:19:57,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:19:57,921 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:19:57,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:19:57,922 INFO L82 PathProgramCache]: Analyzing trace with hash 713102568, now seen corresponding path program 1 times [2020-10-26 23:19:57,922 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:19:57,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1428292418] [2020-10-26 23:19:57,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:19:57,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:19:57,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:58,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:19:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:01,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:01,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-26 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3412 [2020-10-26 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:01,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-26 23:20:01,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:01,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:01,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:01,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:01,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:01,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:01,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:01,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:20:01,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:01,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:01,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:01,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:01,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:01,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:20:01,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:01,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 23:20:01,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:01,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 23:20:01,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:01,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:20:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:01,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:01,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:01,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:20:01,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-26 23:20:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:20:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:02,182 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 107 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:20:02,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1428292418] [2020-10-26 23:20:02,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:02,184 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:02,184 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29685028] [2020-10-26 23:20:02,184 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:02,185 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:02,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:02,185 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:02,186 INFO L87 Difference]: Start difference. First operand 1311 states and 1698 transitions. Second operand 8 states. [2020-10-26 23:20:04,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:04,406 INFO L93 Difference]: Finished difference Result 2330 states and 3296 transitions. [2020-10-26 23:20:04,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-26 23:20:04,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 228 [2020-10-26 23:20:04,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:04,417 INFO L225 Difference]: With dead ends: 2330 [2020-10-26 23:20:04,417 INFO L226 Difference]: Without dead ends: 1391 [2020-10-26 23:20:04,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:20:04,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-10-26 23:20:04,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1315. [2020-10-26 23:20:04,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1315 states. [2020-10-26 23:20:04,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1315 states to 1315 states and 1696 transitions. [2020-10-26 23:20:04,470 INFO L78 Accepts]: Start accepts. Automaton has 1315 states and 1696 transitions. Word has length 228 [2020-10-26 23:20:04,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:04,470 INFO L481 AbstractCegarLoop]: Abstraction has 1315 states and 1696 transitions. [2020-10-26 23:20:04,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:04,470 INFO L276 IsEmpty]: Start isEmpty. Operand 1315 states and 1696 transitions. [2020-10-26 23:20:04,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 254 [2020-10-26 23:20:04,475 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:04,475 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, 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] [2020-10-26 23:20:04,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:20:04,476 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:04,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:04,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1843099238, now seen corresponding path program 1 times [2020-10-26 23:20:04,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:04,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748998401] [2020-10-26 23:20:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:04,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:04,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:05,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:05,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:09,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:09,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-26 23:20:09,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:09,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-26 23:20:09,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:09,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:20:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:09,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 200 [2020-10-26 23:20:09,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:09,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:09,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:09,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:09,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:09,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:20:09,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:09,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:09,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:09,679 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:09,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:09,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:09,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:09,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:09,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:09,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-26 23:20:09,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:09,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:20:09,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:09,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:20:09,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:10,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:10,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:10,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:20:10,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:20:10,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:20:10,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:10,383 INFO L134 CoverageAnalysis]: Checked inductivity of 189 backedges. 107 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 23:20:10,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1748998401] [2020-10-26 23:20:10,384 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:10,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:10,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052812156] [2020-10-26 23:20:10,385 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:20:10,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:10,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:20:10,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:20:10,386 INFO L87 Difference]: Start difference. First operand 1315 states and 1696 transitions. Second operand 9 states. [2020-10-26 23:20:12,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:12,783 INFO L93 Difference]: Finished difference Result 2466 states and 3276 transitions. [2020-10-26 23:20:12,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:20:12,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 253 [2020-10-26 23:20:12,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:12,798 INFO L225 Difference]: With dead ends: 2466 [2020-10-26 23:20:12,798 INFO L226 Difference]: Without dead ends: 1523 [2020-10-26 23:20:12,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:20:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1523 states. [2020-10-26 23:20:12,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1523 to 1503. [2020-10-26 23:20:12,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1503 states. [2020-10-26 23:20:12,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1503 states to 1503 states and 1899 transitions. [2020-10-26 23:20:12,853 INFO L78 Accepts]: Start accepts. Automaton has 1503 states and 1899 transitions. Word has length 253 [2020-10-26 23:20:12,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:12,854 INFO L481 AbstractCegarLoop]: Abstraction has 1503 states and 1899 transitions. [2020-10-26 23:20:12,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:20:12,854 INFO L276 IsEmpty]: Start isEmpty. Operand 1503 states and 1899 transitions. [2020-10-26 23:20:12,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 430 [2020-10-26 23:20:12,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:12,866 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:12,866 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:20:12,866 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:12,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:12,867 INFO L82 PathProgramCache]: Analyzing trace with hash -486767513, now seen corresponding path program 1 times [2020-10-26 23:20:12,868 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:12,868 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1999616460] [2020-10-26 23:20:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:12,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:13,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:13,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:13,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:17,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:17,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 445 [2020-10-26 23:20:17,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:20:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:20:17,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:20:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:20:17,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:20:17,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:18,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:18,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:18,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:18,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:20:18,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:18,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:20:18,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:18,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:18,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:18,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:18,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:18,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-26 23:20:18,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 23:20:18,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-26 23:20:18,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:18,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:18,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:18,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:20:18,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:18,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:20:18,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:20:18,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:18,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 296 [2020-10-26 23:20:18,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:18,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:18,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:18,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:20:18,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:18,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 23:20:18,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:20:18,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:18,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:18,787 INFO L134 CoverageAnalysis]: Checked inductivity of 428 backedges. 159 proven. 179 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-26 23:20:18,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1999616460] [2020-10-26 23:20:18,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:18,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:18,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956163414] [2020-10-26 23:20:18,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:18,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:18,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:18,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:18,790 INFO L87 Difference]: Start difference. First operand 1503 states and 1899 transitions. Second operand 7 states. [2020-10-26 23:20:21,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:21,092 INFO L93 Difference]: Finished difference Result 3590 states and 4683 transitions. [2020-10-26 23:20:21,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:20:21,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 429 [2020-10-26 23:20:21,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:21,105 INFO L225 Difference]: With dead ends: 3590 [2020-10-26 23:20:21,105 INFO L226 Difference]: Without dead ends: 2275 [2020-10-26 23:20:21,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:20:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2275 states. [2020-10-26 23:20:21,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2275 to 2077. [2020-10-26 23:20:21,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2077 states. [2020-10-26 23:20:21,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2077 states to 2077 states and 2622 transitions. [2020-10-26 23:20:21,170 INFO L78 Accepts]: Start accepts. Automaton has 2077 states and 2622 transitions. Word has length 429 [2020-10-26 23:20:21,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:21,171 INFO L481 AbstractCegarLoop]: Abstraction has 2077 states and 2622 transitions. [2020-10-26 23:20:21,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:21,171 INFO L276 IsEmpty]: Start isEmpty. Operand 2077 states and 2622 transitions. [2020-10-26 23:20:21,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-26 23:20:21,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:21,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:21,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:20:21,186 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:21,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:21,187 INFO L82 PathProgramCache]: Analyzing trace with hash -178136116, now seen corresponding path program 1 times [2020-10-26 23:20:21,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:21,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736635926] [2020-10-26 23:20:21,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:21,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:21,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:21,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:24,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-26 23:20:26,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:26,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:26,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:26,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:26,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:26,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:26,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 23:20:26,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-26 23:20:26,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:26,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:26,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:26,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:20:26,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:26,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2020-10-26 23:20:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:27,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:27,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:27,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:20:27,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:27,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-26 23:20:27,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:27,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:20:27,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:27,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:27,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 404 [2020-10-26 23:20:27,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:27,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:27,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:20:27,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:27,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:20:27,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:27,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:20:27,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:27,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 301 proven. 209 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2020-10-26 23:20:27,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736635926] [2020-10-26 23:20:27,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:27,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:20:27,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519525722] [2020-10-26 23:20:27,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 23:20:27,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:27,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 23:20:27,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-26 23:20:27,820 INFO L87 Difference]: Start difference. First operand 2077 states and 2622 transitions. Second operand 6 states. [2020-10-26 23:20:29,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:29,446 INFO L93 Difference]: Finished difference Result 3700 states and 4785 transitions. [2020-10-26 23:20:29,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 23:20:29,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 537 [2020-10-26 23:20:29,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:29,457 INFO L225 Difference]: With dead ends: 3700 [2020-10-26 23:20:29,457 INFO L226 Difference]: Without dead ends: 1917 [2020-10-26 23:20:29,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:20:29,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-10-26 23:20:29,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1885. [2020-10-26 23:20:29,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-26 23:20:29,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2133 transitions. [2020-10-26 23:20:29,519 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2133 transitions. Word has length 537 [2020-10-26 23:20:29,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:29,519 INFO L481 AbstractCegarLoop]: Abstraction has 1885 states and 2133 transitions. [2020-10-26 23:20:29,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 23:20:29,519 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2133 transitions. [2020-10-26 23:20:29,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 650 [2020-10-26 23:20:29,539 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:29,540 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:29,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:20:29,540 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:29,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:29,541 INFO L82 PathProgramCache]: Analyzing trace with hash -996908217, now seen corresponding path program 1 times [2020-10-26 23:20:29,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:29,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918599181] [2020-10-26 23:20:29,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:29,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:29,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:29,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:34,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:34,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:34,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:34,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 669 [2020-10-26 23:20:34,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:20:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-26 23:20:34,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:20:34,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 23:20:34,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:34,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:34,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:34,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:34,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:34,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:34,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:34,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:34,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:34,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:34,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:34,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:34,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:34,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:34,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:34,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:34,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:34,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:34,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:20:34,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:34,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:34,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:34,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:34,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:34,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:35,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:20:35,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:35,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:35,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-26 23:20:35,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:35,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 23:20:35,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 337 [2020-10-26 23:20:35,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:20:35,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:20:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:20:35,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 516 [2020-10-26 23:20:35,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:35,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:20:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:35,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 1242 backedges. 499 proven. 186 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-10-26 23:20:35,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918599181] [2020-10-26 23:20:35,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:35,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:20:35,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861544023] [2020-10-26 23:20:35,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:20:35,752 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:35,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:20:35,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:20:35,752 INFO L87 Difference]: Start difference. First operand 1885 states and 2133 transitions. Second operand 7 states. [2020-10-26 23:20:38,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:38,381 INFO L93 Difference]: Finished difference Result 4340 states and 5016 transitions. [2020-10-26 23:20:38,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:20:38,381 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 649 [2020-10-26 23:20:38,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:38,394 INFO L225 Difference]: With dead ends: 4340 [2020-10-26 23:20:38,395 INFO L226 Difference]: Without dead ends: 2827 [2020-10-26 23:20:38,399 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:20:38,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-10-26 23:20:38,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2631. [2020-10-26 23:20:38,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2631 states. [2020-10-26 23:20:38,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2631 states to 2631 states and 3012 transitions. [2020-10-26 23:20:38,476 INFO L78 Accepts]: Start accepts. Automaton has 2631 states and 3012 transitions. Word has length 649 [2020-10-26 23:20:38,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:38,477 INFO L481 AbstractCegarLoop]: Abstraction has 2631 states and 3012 transitions. [2020-10-26 23:20:38,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:20:38,477 INFO L276 IsEmpty]: Start isEmpty. Operand 2631 states and 3012 transitions. [2020-10-26 23:20:38,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 657 [2020-10-26 23:20:38,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:38,486 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:38,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:20:38,487 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:38,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:38,488 INFO L82 PathProgramCache]: Analyzing trace with hash 930458769, now seen corresponding path program 1 times [2020-10-26 23:20:38,488 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:38,488 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856087468] [2020-10-26 23:20:38,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:38,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:39,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:41,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:41,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:43,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 676 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:20:43,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:43,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:43,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:43,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:43,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:43,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:43,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:43,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:43,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:43,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:43,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:43,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:43,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:43,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:43,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:43,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:43,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:43,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:43,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:43,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:43,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-26 23:20:43,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:43,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:20:43,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:44,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:44,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:44,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:44,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:20:44,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:44,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:20:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:44,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:44,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:44,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:20:44,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-26 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:20:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:44,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 523 [2020-10-26 23:20:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:44,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:44,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:20:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:44,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:44,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1249 backedges. 710 proven. 268 refuted. 0 times theorem prover too weak. 271 trivial. 0 not checked. [2020-10-26 23:20:44,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856087468] [2020-10-26 23:20:44,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:44,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:44,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794339243] [2020-10-26 23:20:44,862 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:44,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:44,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:44,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:44,863 INFO L87 Difference]: Start difference. First operand 2631 states and 3012 transitions. Second operand 8 states. [2020-10-26 23:20:46,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:46,813 INFO L93 Difference]: Finished difference Result 6026 states and 7002 transitions. [2020-10-26 23:20:46,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:20:46,819 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 656 [2020-10-26 23:20:46,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:46,835 INFO L225 Difference]: With dead ends: 6026 [2020-10-26 23:20:46,835 INFO L226 Difference]: Without dead ends: 3767 [2020-10-26 23:20:46,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-26 23:20:46,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3767 states. [2020-10-26 23:20:46,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3767 to 3755. [2020-10-26 23:20:46,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3755 states. [2020-10-26 23:20:46,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3755 states to 3755 states and 4252 transitions. [2020-10-26 23:20:46,947 INFO L78 Accepts]: Start accepts. Automaton has 3755 states and 4252 transitions. Word has length 656 [2020-10-26 23:20:46,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:46,948 INFO L481 AbstractCegarLoop]: Abstraction has 3755 states and 4252 transitions. [2020-10-26 23:20:46,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:46,948 INFO L276 IsEmpty]: Start isEmpty. Operand 3755 states and 4252 transitions. [2020-10-26 23:20:46,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 673 [2020-10-26 23:20:46,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:46,959 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:20:46,959 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:20:46,960 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:46,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:46,960 INFO L82 PathProgramCache]: Analyzing trace with hash 800867953, now seen corresponding path program 1 times [2020-10-26 23:20:46,960 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:46,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634757391] [2020-10-26 23:20:46,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:47,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:47,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:47,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:51,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:51,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 692 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:20:52,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:20:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:52,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:20:52,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:52,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:20:52,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:52,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:52,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:52,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:20:52,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:52,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:52,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:20:52,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:52,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:20:52,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:20:52,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:20:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:20:52,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:20:52,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:20:52,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:52,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:20:52,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:52,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 360 [2020-10-26 23:20:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:52,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:20:52,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:52,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 23:20:52,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:20:52,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:52,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:52,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 539 [2020-10-26 23:20:52,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:52,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:20:52,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:20:52,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:20:52,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:20:52,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:20:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:20:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:20:52,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:20:52,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:20:53,061 INFO L134 CoverageAnalysis]: Checked inductivity of 1265 backedges. 499 proven. 209 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2020-10-26 23:20:53,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634757391] [2020-10-26 23:20:53,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:20:53,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:20:53,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682886838] [2020-10-26 23:20:53,063 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:20:53,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:20:53,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:20:53,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:20:53,063 INFO L87 Difference]: Start difference. First operand 3755 states and 4252 transitions. Second operand 8 states. [2020-10-26 23:20:55,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:20:55,684 INFO L93 Difference]: Finished difference Result 8806 states and 10193 transitions. [2020-10-26 23:20:55,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:20:55,684 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 672 [2020-10-26 23:20:55,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:20:55,706 INFO L225 Difference]: With dead ends: 8806 [2020-10-26 23:20:55,706 INFO L226 Difference]: Without dead ends: 5423 [2020-10-26 23:20:55,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:20:55,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5423 states. [2020-10-26 23:20:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5423 to 5421. [2020-10-26 23:20:55,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5421 states. [2020-10-26 23:20:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5421 states to 5421 states and 6152 transitions. [2020-10-26 23:20:55,854 INFO L78 Accepts]: Start accepts. Automaton has 5421 states and 6152 transitions. Word has length 672 [2020-10-26 23:20:55,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:20:55,854 INFO L481 AbstractCegarLoop]: Abstraction has 5421 states and 6152 transitions. [2020-10-26 23:20:55,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:20:55,854 INFO L276 IsEmpty]: Start isEmpty. Operand 5421 states and 6152 transitions. [2020-10-26 23:20:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 816 [2020-10-26 23:20:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:20:55,868 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2020-10-26 23:20:55,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 23:20:55,868 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:20:55,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:20:55,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1495088572, now seen corresponding path program 1 times [2020-10-26 23:20:55,869 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:20:55,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105131861] [2020-10-26 23:20:55,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:20:56,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:20:56,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:56,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:56,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:20:59,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:00,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:01,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 837 [2020-10-26 23:21:01,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:21:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-26 23:21:01,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:21:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-26 23:21:01,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 176 [2020-10-26 23:21:01,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:01,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:01,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:01,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:01,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:01,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:01,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:01,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:01,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:01,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:01,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:01,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:01,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:01,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:01,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:01,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:01,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:01,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:01,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:01,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:01,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:01,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:01,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:01,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-26 23:21:01,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:01,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:21:01,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:01,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:02,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:02,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:21:02,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:02,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-10-26 23:21:02,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:02,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:21:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:02,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:21:02,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:02,776 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 42 [2020-10-26 23:21:03,042 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 73 [2020-10-26 23:21:03,336 WARN L193 SmtUtils]: Spent 257.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 78 [2020-10-26 23:21:03,651 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 80 [2020-10-26 23:21:03,979 WARN L193 SmtUtils]: Spent 288.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 83 [2020-10-26 23:21:04,314 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 88 [2020-10-26 23:21:05,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 682 [2020-10-26 23:21:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:05,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:05,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:08,399 INFO L134 CoverageAnalysis]: Checked inductivity of 1877 backedges. 832 proven. 79 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-26 23:21:08,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105131861] [2020-10-26 23:21:08,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:08,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:21:08,399 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847142522] [2020-10-26 23:21:08,400 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:21:08,400 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:08,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:21:08,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:21:08,401 INFO L87 Difference]: Start difference. First operand 5421 states and 6152 transitions. Second operand 13 states. [2020-10-26 23:21:08,636 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 71 [2020-10-26 23:21:09,445 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 95 [2020-10-26 23:21:10,257 WARN L193 SmtUtils]: Spent 450.00 ms on a formula simplification. DAG size of input: 141 DAG size of output: 111 [2020-10-26 23:21:10,758 WARN L193 SmtUtils]: Spent 251.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 101 [2020-10-26 23:21:11,220 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 144 DAG size of output: 110 [2020-10-26 23:21:11,682 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 146 DAG size of output: 113 [2020-10-26 23:21:12,278 WARN L193 SmtUtils]: Spent 427.00 ms on a formula simplification. DAG size of input: 164 DAG size of output: 119 [2020-10-26 23:21:12,891 WARN L193 SmtUtils]: Spent 533.00 ms on a formula simplification. DAG size of input: 194 DAG size of output: 133 [2020-10-26 23:21:13,363 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 67 [2020-10-26 23:21:13,723 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 82 [2020-10-26 23:21:14,623 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 86 [2020-10-26 23:21:15,534 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 92 [2020-10-26 23:21:16,006 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 151 DAG size of output: 96 [2020-10-26 23:21:16,485 WARN L193 SmtUtils]: Spent 401.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 99 [2020-10-26 23:21:17,108 WARN L193 SmtUtils]: Spent 429.00 ms on a formula simplification. DAG size of input: 171 DAG size of output: 103 [2020-10-26 23:21:17,747 WARN L193 SmtUtils]: Spent 496.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 106 [2020-10-26 23:21:18,576 WARN L193 SmtUtils]: Spent 447.00 ms on a formula simplification. DAG size of input: 142 DAG size of output: 99 [2020-10-26 23:21:18,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:18,868 INFO L93 Difference]: Finished difference Result 10656 states and 12143 transitions. [2020-10-26 23:21:18,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:21:18,876 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 815 [2020-10-26 23:21:18,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:18,897 INFO L225 Difference]: With dead ends: 10656 [2020-10-26 23:21:18,897 INFO L226 Difference]: Without dead ends: 5596 [2020-10-26 23:21:18,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=258, Invalid=672, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:21:18,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5596 states. [2020-10-26 23:21:19,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5596 to 5594. [2020-10-26 23:21:19,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5594 states. [2020-10-26 23:21:19,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5594 states to 5594 states and 6335 transitions. [2020-10-26 23:21:19,047 INFO L78 Accepts]: Start accepts. Automaton has 5594 states and 6335 transitions. Word has length 815 [2020-10-26 23:21:19,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:19,048 INFO L481 AbstractCegarLoop]: Abstraction has 5594 states and 6335 transitions. [2020-10-26 23:21:19,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:21:19,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5594 states and 6335 transitions. [2020-10-26 23:21:19,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 871 [2020-10-26 23:21:19,062 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:19,063 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:19,063 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 23:21:19,063 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:19,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:19,064 INFO L82 PathProgramCache]: Analyzing trace with hash 1766511497, now seen corresponding path program 1 times [2020-10-26 23:21:19,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:19,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719776215] [2020-10-26 23:21:19,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:19,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:19,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:19,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:19,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:20,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 894 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5057 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 338 [2020-10-26 23:21:24,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:24,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:24,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:24,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:24,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:24,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:24,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:21:24,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:24,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:24,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:24,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:24,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:24,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:24,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:24,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:24,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:24,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:24,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:24,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:24,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-26 23:21:24,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:24,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-26 23:21:24,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:24,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:24,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:24,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:24,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:24,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:24,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-26 23:21:24,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:24,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:24,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-26 23:21:24,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:25,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:25,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:25,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-26 23:21:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:25,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:25,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:25,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:25,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:21:25,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-26 23:21:25,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:21:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:25,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 558 [2020-10-26 23:21:25,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:25,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:25,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:25,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:21:25,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:25,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-26 23:21:25,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:21:25,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:25,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:25,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 737 [2020-10-26 23:21:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:25,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:25,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:21:25,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:25,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:21:25,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:25,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:21:25,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2389 backedges. 994 proven. 555 refuted. 0 times theorem prover too weak. 840 trivial. 0 not checked. [2020-10-26 23:21:26,250 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719776215] [2020-10-26 23:21:26,250 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:26,251 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:21:26,251 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929220877] [2020-10-26 23:21:26,251 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:21:26,251 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:26,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:21:26,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:21:26,260 INFO L87 Difference]: Start difference. First operand 5594 states and 6335 transitions. Second operand 8 states. [2020-10-26 23:21:29,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:29,032 INFO L93 Difference]: Finished difference Result 10824 states and 12313 transitions. [2020-10-26 23:21:29,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:21:29,036 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 870 [2020-10-26 23:21:29,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:29,060 INFO L225 Difference]: With dead ends: 10824 [2020-10-26 23:21:29,061 INFO L226 Difference]: Without dead ends: 5602 [2020-10-26 23:21:29,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:21:29,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5602 states. [2020-10-26 23:21:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5602 to 5600. [2020-10-26 23:21:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5600 states. [2020-10-26 23:21:29,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5600 states to 5600 states and 6344 transitions. [2020-10-26 23:21:29,199 INFO L78 Accepts]: Start accepts. Automaton has 5600 states and 6344 transitions. Word has length 870 [2020-10-26 23:21:29,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:29,199 INFO L481 AbstractCegarLoop]: Abstraction has 5600 states and 6344 transitions. [2020-10-26 23:21:29,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:21:29,199 INFO L276 IsEmpty]: Start isEmpty. Operand 5600 states and 6344 transitions. [2020-10-26 23:21:29,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 915 [2020-10-26 23:21:29,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:29,213 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2020-10-26 23:21:29,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 23:21:29,214 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:29,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:29,215 INFO L82 PathProgramCache]: Analyzing trace with hash 384644785, now seen corresponding path program 1 times [2020-10-26 23:21:29,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:29,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [789006083] [2020-10-26 23:21:29,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:29,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:29,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:29,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:29,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:31,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 938 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-26 23:21:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:34,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:34,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:34,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 23:21:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:34,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 23:21:34,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:34,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:34,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:34,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:34,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:34,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:21:34,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:34,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:34,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:21:34,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:34,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:34,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:34,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:21:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:35,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 781 [2020-10-26 23:21:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:35,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:35,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:35,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:35,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:35,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2433 backedges. 990 proven. 79 refuted. 0 times theorem prover too weak. 1364 trivial. 0 not checked. [2020-10-26 23:21:35,598 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [789006083] [2020-10-26 23:21:35,598 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:35,599 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:35,599 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044755021] [2020-10-26 23:21:35,599 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:35,600 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:35,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:35,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:35,600 INFO L87 Difference]: Start difference. First operand 5600 states and 6344 transitions. Second operand 7 states. [2020-10-26 23:21:37,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:37,532 INFO L93 Difference]: Finished difference Result 12480 states and 14272 transitions. [2020-10-26 23:21:37,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:21:37,533 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 914 [2020-10-26 23:21:37,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:37,555 INFO L225 Difference]: With dead ends: 12480 [2020-10-26 23:21:37,556 INFO L226 Difference]: Without dead ends: 7252 [2020-10-26 23:21:37,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:21:37,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7252 states. [2020-10-26 23:21:37,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7252 to 7068. [2020-10-26 23:21:37,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7068 states. [2020-10-26 23:21:37,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7068 states to 7068 states and 7982 transitions. [2020-10-26 23:21:37,724 INFO L78 Accepts]: Start accepts. Automaton has 7068 states and 7982 transitions. Word has length 914 [2020-10-26 23:21:37,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:37,725 INFO L481 AbstractCegarLoop]: Abstraction has 7068 states and 7982 transitions. [2020-10-26 23:21:37,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:37,725 INFO L276 IsEmpty]: Start isEmpty. Operand 7068 states and 7982 transitions. [2020-10-26 23:21:37,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-26 23:21:37,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:37,743 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2020-10-26 23:21:37,743 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 23:21:37,743 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:37,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:37,744 INFO L82 PathProgramCache]: Analyzing trace with hash 774464908, now seen corresponding path program 1 times [2020-10-26 23:21:37,744 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:37,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349861951] [2020-10-26 23:21:37,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:37,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:38,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:38,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:39,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:42,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:42,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1016 [2020-10-26 23:21:42,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:21:42,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 23:21:42,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-26 23:21:42,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-26 23:21:42,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:43,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:43,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:43,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:21:43,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:43,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:43,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:43,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:21:43,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:43,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-26 23:21:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:43,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:43,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:21:43,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:21:43,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-26 23:21:43,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:43,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-26 23:21:43,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:21:43,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:43,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:43,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:43,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-26 23:21:43,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:43,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:21:43,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:43,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:43,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 23:21:43,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:44,545 INFO L134 CoverageAnalysis]: Checked inductivity of 3018 backedges. 989 proven. 2 refuted. 0 times theorem prover too weak. 2027 trivial. 0 not checked. [2020-10-26 23:21:44,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349861951] [2020-10-26 23:21:44,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:44,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:21:44,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385639394] [2020-10-26 23:21:44,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:21:44,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:44,547 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:21:44,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:21:44,547 INFO L87 Difference]: Start difference. First operand 7068 states and 7982 transitions. Second operand 7 states. [2020-10-26 23:21:46,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:46,389 INFO L93 Difference]: Finished difference Result 14320 states and 16262 transitions. [2020-10-26 23:21:46,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:21:46,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 990 [2020-10-26 23:21:46,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:46,418 INFO L225 Difference]: With dead ends: 14320 [2020-10-26 23:21:46,418 INFO L226 Difference]: Without dead ends: 7624 [2020-10-26 23:21:46,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:21:46,442 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7624 states. [2020-10-26 23:21:46,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7624 to 7622. [2020-10-26 23:21:46,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7622 states. [2020-10-26 23:21:46,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7622 states to 7622 states and 8489 transitions. [2020-10-26 23:21:46,600 INFO L78 Accepts]: Start accepts. Automaton has 7622 states and 8489 transitions. Word has length 990 [2020-10-26 23:21:46,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:46,601 INFO L481 AbstractCegarLoop]: Abstraction has 7622 states and 8489 transitions. [2020-10-26 23:21:46,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:21:46,601 INFO L276 IsEmpty]: Start isEmpty. Operand 7622 states and 8489 transitions. [2020-10-26 23:21:46,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-26 23:21:46,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:46,619 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 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, 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] [2020-10-26 23:21:46,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 23:21:46,620 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:46,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:46,620 INFO L82 PathProgramCache]: Analyzing trace with hash -330936040, now seen corresponding path program 1 times [2020-10-26 23:21:46,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:46,624 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224279434] [2020-10-26 23:21:46,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:51,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:51,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1022 [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-26 23:21:51,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:21:52,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:21:52,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:21:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:21:52,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:21:52,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:21:52,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:21:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:52,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:21:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:52,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:21:52,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:21:52,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:21:52,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:52,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:21:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:21:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:21:52,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:21:52,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:21:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:21:52,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 23:21:52,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:21:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:52,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:21:52,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:52,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:21:52,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:52,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:21:52,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:21:52,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 23:21:52,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:21:53,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3049 backedges. 1598 proven. 6 refuted. 0 times theorem prover too weak. 1445 trivial. 0 not checked. [2020-10-26 23:21:53,363 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224279434] [2020-10-26 23:21:53,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:21:53,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:21:53,364 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202539514] [2020-10-26 23:21:53,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:21:53,365 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:21:53,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:21:53,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:21:53,365 INFO L87 Difference]: Start difference. First operand 7622 states and 8489 transitions. Second operand 9 states. [2020-10-26 23:21:53,509 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-26 23:21:56,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:21:56,940 INFO L93 Difference]: Finished difference Result 16710 states and 18644 transitions. [2020-10-26 23:21:56,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-26 23:21:56,941 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 996 [2020-10-26 23:21:56,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:21:56,981 INFO L225 Difference]: With dead ends: 16710 [2020-10-26 23:21:56,982 INFO L226 Difference]: Without dead ends: 9460 [2020-10-26 23:21:56,997 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:21:57,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9460 states. [2020-10-26 23:21:57,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9460 to 9278. [2020-10-26 23:21:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9278 states. [2020-10-26 23:21:57,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9278 states to 9278 states and 10271 transitions. [2020-10-26 23:21:57,179 INFO L78 Accepts]: Start accepts. Automaton has 9278 states and 10271 transitions. Word has length 996 [2020-10-26 23:21:57,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:21:57,180 INFO L481 AbstractCegarLoop]: Abstraction has 9278 states and 10271 transitions. [2020-10-26 23:21:57,180 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:21:57,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9278 states and 10271 transitions. [2020-10-26 23:21:57,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1083 [2020-10-26 23:21:57,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:21:57,201 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:21:57,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 23:21:57,201 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:21:57,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:21:57,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1194547092, now seen corresponding path program 1 times [2020-10-26 23:21:57,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:21:57,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1740047628] [2020-10-26 23:21:57,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:21:57,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:21:57,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:57,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:21:59,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1108 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 612 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-26 23:22:02,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:02,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:02,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:22:02,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:02,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:02,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-26 23:22:02,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:02,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:02,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:02,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:02,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:02,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:02,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 23:22:02,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:02,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:02,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:02,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:02,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:02,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-26 23:22:02,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:02,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-26 23:22:02,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:02,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:02,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:03,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:03,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-26 23:22:03,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:03,990 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 43 [2020-10-26 23:22:04,363 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 74 [2020-10-26 23:22:04,641 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 79 [2020-10-26 23:22:04,925 WARN L193 SmtUtils]: Spent 253.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 79 [2020-10-26 23:22:05,227 WARN L193 SmtUtils]: Spent 266.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-26 23:22:05,536 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 82 [2020-10-26 23:22:06,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 764 [2020-10-26 23:22:06,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:06,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 23:22:06,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:22:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:06,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 943 [2020-10-26 23:22:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:06,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:06,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:09,998 INFO L134 CoverageAnalysis]: Checked inductivity of 3344 backedges. 1048 proven. 244 refuted. 0 times theorem prover too weak. 2052 trivial. 0 not checked. [2020-10-26 23:22:09,998 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1740047628] [2020-10-26 23:22:09,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:09,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-26 23:22:09,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797279825] [2020-10-26 23:22:09,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-26 23:22:10,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:10,000 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-26 23:22:10,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:22:10,000 INFO L87 Difference]: Start difference. First operand 9278 states and 10271 transitions. Second operand 13 states. [2020-10-26 23:22:10,197 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 70 [2020-10-26 23:22:10,782 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 126 DAG size of output: 91 [2020-10-26 23:22:11,112 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 96 [2020-10-26 23:22:11,509 WARN L193 SmtUtils]: Spent 273.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 97 [2020-10-26 23:22:11,823 WARN L193 SmtUtils]: Spent 277.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 101 [2020-10-26 23:22:12,239 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 94 [2020-10-26 23:22:12,670 WARN L193 SmtUtils]: Spent 298.00 ms on a formula simplification. DAG size of input: 134 DAG size of output: 101 [2020-10-26 23:22:13,176 WARN L193 SmtUtils]: Spent 374.00 ms on a formula simplification. DAG size of input: 152 DAG size of output: 116 [2020-10-26 23:22:13,718 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 84 [2020-10-26 23:22:14,175 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 80 [2020-10-26 23:22:14,827 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 84 [2020-10-26 23:22:15,196 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 89 [2020-10-26 23:22:15,613 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 90 [2020-10-26 23:22:15,956 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2020-10-26 23:22:16,496 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 138 DAG size of output: 93 [2020-10-26 23:22:17,005 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 96 [2020-10-26 23:22:17,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:17,748 INFO L93 Difference]: Finished difference Result 18366 states and 20359 transitions. [2020-10-26 23:22:17,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-26 23:22:17,750 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 1082 [2020-10-26 23:22:17,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:17,774 INFO L225 Difference]: With dead ends: 18366 [2020-10-26 23:22:17,774 INFO L226 Difference]: Without dead ends: 9352 [2020-10-26 23:22:17,791 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=263, Invalid=667, Unknown=0, NotChecked=0, Total=930 [2020-10-26 23:22:17,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9352 states. [2020-10-26 23:22:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9352 to 9352. [2020-10-26 23:22:17,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9352 states. [2020-10-26 23:22:17,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9352 states to 9352 states and 10346 transitions. [2020-10-26 23:22:17,975 INFO L78 Accepts]: Start accepts. Automaton has 9352 states and 10346 transitions. Word has length 1082 [2020-10-26 23:22:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:17,976 INFO L481 AbstractCegarLoop]: Abstraction has 9352 states and 10346 transitions. [2020-10-26 23:22:17,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-26 23:22:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 9352 states and 10346 transitions. [2020-10-26 23:22:18,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1112 [2020-10-26 23:22:18,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:18,001 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-10-26 23:22:18,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 23:22:18,001 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:18,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:18,002 INFO L82 PathProgramCache]: Analyzing trace with hash 326846579, now seen corresponding path program 1 times [2020-10-26 23:22:18,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:18,002 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454315107] [2020-10-26 23:22:18,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:18,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:18,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:18,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1139 [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-26 23:22:23,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:23,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 387 [2020-10-26 23:22:23,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:23,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:22:23,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:23,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:23,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:23,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:23,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-26 23:22:23,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:23,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:23,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:23,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:23,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:23,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:23,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:23,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:23,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 23:22:23,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:23,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:23,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:22:23,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:23,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-26 23:22:23,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:24,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 23:22:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:24,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 975 [2020-10-26 23:22:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:24,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:24,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:24,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-26 23:22:24,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:24,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:22:24,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:24,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:24,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-26 23:22:24,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:26,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3899 backedges. 2246 proven. 275 refuted. 0 times theorem prover too weak. 1378 trivial. 0 not checked. [2020-10-26 23:22:26,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454315107] [2020-10-26 23:22:26,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:26,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-26 23:22:26,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879033211] [2020-10-26 23:22:26,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:22:26,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:26,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:22:26,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:26,099 INFO L87 Difference]: Start difference. First operand 9352 states and 10346 transitions. Second operand 11 states. [2020-10-26 23:22:30,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:30,179 INFO L93 Difference]: Finished difference Result 18798 states and 21508 transitions. [2020-10-26 23:22:30,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-26 23:22:30,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 1111 [2020-10-26 23:22:30,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:30,212 INFO L225 Difference]: With dead ends: 18798 [2020-10-26 23:22:30,212 INFO L226 Difference]: Without dead ends: 9818 [2020-10-26 23:22:30,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=184, Invalid=572, Unknown=0, NotChecked=0, Total=756 [2020-10-26 23:22:30,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2020-10-26 23:22:30,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 9354. [2020-10-26 23:22:30,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9354 states. [2020-10-26 23:22:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9354 states to 9354 states and 10335 transitions. [2020-10-26 23:22:30,454 INFO L78 Accepts]: Start accepts. Automaton has 9354 states and 10335 transitions. Word has length 1111 [2020-10-26 23:22:30,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:30,455 INFO L481 AbstractCegarLoop]: Abstraction has 9354 states and 10335 transitions. [2020-10-26 23:22:30,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:22:30,455 INFO L276 IsEmpty]: Start isEmpty. Operand 9354 states and 10335 transitions. [2020-10-26 23:22:30,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1128 [2020-10-26 23:22:30,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:30,480 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 23:22:30,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 23:22:30,480 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:30,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:30,481 INFO L82 PathProgramCache]: Analyzing trace with hash 820538424, now seen corresponding path program 1 times [2020-10-26 23:22:30,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:30,482 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1800773236] [2020-10-26 23:22:30,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:30,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:31,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:35,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:35,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1153 [2020-10-26 23:22:35,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-26 23:22:35,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 686 [2020-10-26 23:22:35,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-26 23:22:35,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:35,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:35,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:35,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:35,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:35,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:35,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:22:35,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:35,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:35,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:35,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:35,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:35,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:35,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:22:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:35,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:35,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:35,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:35,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:35,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:35,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:35,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:35,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:35,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:35,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:35,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:36,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:36,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:36,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:22:36,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:36,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:22:36,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:36,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:36,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:36,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:36,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:22:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:36,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:36,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:36,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-26 23:22:36,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:36,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:22:36,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:22:36,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:36,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 809 [2020-10-26 23:22:36,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:36,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:36,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:22:36,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:36,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:36,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 988 [2020-10-26 23:22:36,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:36,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:22:36,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:36,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 3588 backedges. 1071 proven. 215 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:22:37,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1800773236] [2020-10-26 23:22:37,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:37,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:22:37,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450443797] [2020-10-26 23:22:37,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:22:37,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:37,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:22:37,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:22:37,445 INFO L87 Difference]: Start difference. First operand 9354 states and 10335 transitions. Second operand 7 states. [2020-10-26 23:22:39,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:39,336 INFO L93 Difference]: Finished difference Result 18520 states and 20489 transitions. [2020-10-26 23:22:39,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:22:39,337 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1127 [2020-10-26 23:22:39,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:39,360 INFO L225 Difference]: With dead ends: 18520 [2020-10-26 23:22:39,360 INFO L226 Difference]: Without dead ends: 9538 [2020-10-26 23:22:39,372 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:22:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9538 states. [2020-10-26 23:22:39,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9538 to 9536. [2020-10-26 23:22:39,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9536 states. [2020-10-26 23:22:39,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9536 states to 9536 states and 10523 transitions. [2020-10-26 23:22:39,554 INFO L78 Accepts]: Start accepts. Automaton has 9536 states and 10523 transitions. Word has length 1127 [2020-10-26 23:22:39,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:39,555 INFO L481 AbstractCegarLoop]: Abstraction has 9536 states and 10523 transitions. [2020-10-26 23:22:39,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:22:39,556 INFO L276 IsEmpty]: Start isEmpty. Operand 9536 states and 10523 transitions. [2020-10-26 23:22:39,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1157 [2020-10-26 23:22:39,577 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:39,578 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:22:39,578 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 23:22:39,579 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:39,580 INFO L82 PathProgramCache]: Analyzing trace with hash 220156048, now seen corresponding path program 1 times [2020-10-26 23:22:39,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:39,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34867378] [2020-10-26 23:22:39,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:39,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:40,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1182 [2020-10-26 23:22:44,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:22:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-26 23:22:44,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-26 23:22:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-26 23:22:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-26 23:22:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:44,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:44,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:44,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:44,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:44,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:44,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:45,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:45,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:45,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:45,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-26 23:22:45,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 23:22:45,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-26 23:22:45,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-26 23:22:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:45,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-26 23:22:45,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-26 23:22:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:45,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-26 23:22:45,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:45,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-26 23:22:45,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:45,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1017 [2020-10-26 23:22:45,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:45,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:45,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:45,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:22:45,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:45,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:22:45,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:45,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:22:45,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:45,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:46,724 INFO L134 CoverageAnalysis]: Checked inductivity of 3672 backedges. 1285 proven. 85 refuted. 0 times theorem prover too weak. 2302 trivial. 0 not checked. [2020-10-26 23:22:46,724 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [34867378] [2020-10-26 23:22:46,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:46,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:22:46,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922143081] [2020-10-26 23:22:46,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:22:46,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:46,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:22:46,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:22:46,726 INFO L87 Difference]: Start difference. First operand 9536 states and 10523 transitions. Second operand 8 states. [2020-10-26 23:22:48,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:22:48,990 INFO L93 Difference]: Finished difference Result 18886 states and 20881 transitions. [2020-10-26 23:22:48,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:22:48,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1156 [2020-10-26 23:22:48,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:22:49,012 INFO L225 Difference]: With dead ends: 18886 [2020-10-26 23:22:49,012 INFO L226 Difference]: Without dead ends: 9722 [2020-10-26 23:22:49,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-26 23:22:49,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9722 states. [2020-10-26 23:22:49,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9722 to 9718. [2020-10-26 23:22:49,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9718 states. [2020-10-26 23:22:49,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9718 states to 9718 states and 10710 transitions. [2020-10-26 23:22:49,214 INFO L78 Accepts]: Start accepts. Automaton has 9718 states and 10710 transitions. Word has length 1156 [2020-10-26 23:22:49,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:22:49,215 INFO L481 AbstractCegarLoop]: Abstraction has 9718 states and 10710 transitions. [2020-10-26 23:22:49,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:22:49,215 INFO L276 IsEmpty]: Start isEmpty. Operand 9718 states and 10710 transitions. [2020-10-26 23:22:49,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1244 [2020-10-26 23:22:49,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:22:49,239 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 4, 4, 4, 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, 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] [2020-10-26 23:22:49,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 23:22:49,240 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:22:49,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:22:49,240 INFO L82 PathProgramCache]: Analyzing trace with hash 2064986354, now seen corresponding path program 1 times [2020-10-26 23:22:49,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:22:49,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33548904] [2020-10-26 23:22:49,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:22:49,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:49,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:49,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:49,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:51,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1273 [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5063 [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-26 23:22:54,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-26 23:22:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:22:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:22:54,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 23:22:54,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:22:54,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-26 23:22:54,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-26 23:22:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 23:22:54,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 23:22:54,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-26 23:22:54,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-26 23:22:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:54,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:54,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-26 23:22:54,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:54,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 23:22:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:54,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-26 23:22:54,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:54,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:55,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:55,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-26 23:22:55,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:55,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-26 23:22:55,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:55,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:22:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:55,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-26 23:22:55,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:55,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-26 23:22:55,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:55,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:55,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 23:22:55,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:55,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 925 [2020-10-26 23:22:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-26 23:22:55,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:55,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:55,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1104 [2020-10-26 23:22:55,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:22:55,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:22:55,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:22:55,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:22:55,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:22:57,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4918 backedges. 1845 proven. 490 refuted. 0 times theorem prover too weak. 2583 trivial. 0 not checked. [2020-10-26 23:22:57,224 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33548904] [2020-10-26 23:22:57,224 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:22:57,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 23:22:57,224 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631527301] [2020-10-26 23:22:57,225 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 23:22:57,225 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:22:57,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 23:22:57,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-26 23:22:57,226 INFO L87 Difference]: Start difference. First operand 9718 states and 10710 transitions. Second operand 9 states. [2020-10-26 23:22:57,602 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 77 [2020-10-26 23:23:00,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:23:00,253 INFO L93 Difference]: Finished difference Result 19346 states and 21357 transitions. [2020-10-26 23:23:00,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 23:23:00,256 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1243 [2020-10-26 23:23:00,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:23:00,278 INFO L225 Difference]: With dead ends: 19346 [2020-10-26 23:23:00,279 INFO L226 Difference]: Without dead ends: 9934 [2020-10-26 23:23:00,291 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-26 23:23:00,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9934 states. [2020-10-26 23:23:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9934 to 9350. [2020-10-26 23:23:00,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9350 states. [2020-10-26 23:23:00,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9350 states to 9350 states and 10314 transitions. [2020-10-26 23:23:00,479 INFO L78 Accepts]: Start accepts. Automaton has 9350 states and 10314 transitions. Word has length 1243 [2020-10-26 23:23:00,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:23:00,480 INFO L481 AbstractCegarLoop]: Abstraction has 9350 states and 10314 transitions. [2020-10-26 23:23:00,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 23:23:00,481 INFO L276 IsEmpty]: Start isEmpty. Operand 9350 states and 10314 transitions. [2020-10-26 23:23:00,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1277 [2020-10-26 23:23:00,503 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:23:00,504 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-26 23:23:00,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 23:23:00,505 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:23:00,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:23:00,505 INFO L82 PathProgramCache]: Analyzing trace with hash -145110892, now seen corresponding path program 1 times [2020-10-26 23:23:00,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:23:00,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [895027357] [2020-10-26 23:23:00,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:23:00,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:23:00,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:00,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:02,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:23:03,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking...