/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem15_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:07:25,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:07:25,405 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:07:25,457 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:07:25,459 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:07:25,467 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:07:25,469 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:07:25,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:07:25,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:07:25,483 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:07:25,485 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:07:25,486 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:07:25,487 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:07:25,490 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:07:25,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:07:25,496 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:07:25,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:07:25,501 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:07:25,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:07:25,519 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:07:25,521 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:07:25,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:07:25,525 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:07:25,527 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:07:25,550 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:07:25,551 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:07:25,551 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:07:25,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:07:25,553 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:07:25,554 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:07:25,555 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:07:25,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:07:25,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:07:25,558 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:07:25,560 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:07:25,560 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:07:25,561 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:07:25,562 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:07:25,562 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:07:25,563 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:07:25,564 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:07:25,574 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 [2020-10-28 13:07:25,628 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:07:25,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:07:25,634 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:07:25,634 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:07:25,634 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:07:25,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:07:25,635 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:07:25,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:07:25,636 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:07:25,636 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:07:25,637 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:07:25,638 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:07:25,638 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:07:25,638 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:07:25,638 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:07:25,639 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:07:25,639 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:07:25,639 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:07:25,640 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:07:25,640 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:07:25,640 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:07:25,640 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:07:25,641 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:07:25,641 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:07:25,641 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:07:25,642 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:07:25,642 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:07:25,642 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:07:25,642 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:07:25,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:07:26,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:07:26,180 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:07:26,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:07:26,186 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:07:26,186 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:07:26,187 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2020-10-28 13:07:26,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adce71700/3a5f63e7dfaa44d690c38a616c4ca03e/FLAG820c8dece [2020-10-28 13:07:27,110 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:07:27,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label34.c [2020-10-28 13:07:27,142 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adce71700/3a5f63e7dfaa44d690c38a616c4ca03e/FLAG820c8dece [2020-10-28 13:07:27,273 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/adce71700/3a5f63e7dfaa44d690c38a616c4ca03e [2020-10-28 13:07:27,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:07:27,289 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:07:27,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:07:27,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:07:27,300 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:07:27,301 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:07:27" (1/1) ... [2020-10-28 13:07:27,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51fd59e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:27, skipping insertion in model container [2020-10-28 13:07:27,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:07:27" (1/1) ... [2020-10-28 13:07:27,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:07:27,428 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:07:28,373 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:07:28,389 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:07:28,687 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:07:28,714 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:07:28,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28 WrapperNode [2020-10-28 13:07:28,715 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:07:28,716 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:07:28,716 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:07:28,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:07:28,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,779 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,779 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,898 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,923 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (1/1) ... [2020-10-28 13:07:28,956 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:07:28,960 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:07:28,960 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:07:28,961 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:07:28,962 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (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 [2020-10-28 13:07:29,062 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:07:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:07:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:07:29,063 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:07:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:07:29,064 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:07:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:07:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:07:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:07:29,064 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:07:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:07:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:07:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:07:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:07:29,065 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:07:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:07:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:07:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:07:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:07:29,066 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:07:29,067 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:07:33,022 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:07:33,022 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:07:33,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:07:33 BoogieIcfgContainer [2020-10-28 13:07:33,026 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:07:33,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:07:33,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:07:33,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:07:33,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:07:27" (1/3) ... [2020-10-28 13:07:33,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697b7fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:07:33, skipping insertion in model container [2020-10-28 13:07:33,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:07:28" (2/3) ... [2020-10-28 13:07:33,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@697b7fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:07:33, skipping insertion in model container [2020-10-28 13:07:33,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:07:33" (3/3) ... [2020-10-28 13:07:33,037 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label34.c [2020-10-28 13:07:33,082 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:07:33,089 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:07:33,108 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:07:33,148 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:07:33,148 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:07:33,148 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:07:33,148 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:07:33,148 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:07:33,149 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:07:33,149 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:07:33,149 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:07:33,185 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-28 13:07:33,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-28 13:07:33,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:33,194 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] [2020-10-28 13:07:33,195 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:33,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:33,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1427601471, now seen corresponding path program 1 times [2020-10-28 13:07:33,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:33,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209424964] [2020-10-28 13:07:33,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:33,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:33,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:33,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-28 13:07:33,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:33,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 533 [2020-10-28 13:07:33,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:33,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:33,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:33,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 13:07:33,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:07:34,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:34,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:34,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:34,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:34,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:34,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-28 13:07:34,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:34,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:34,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:34,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:34,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:34,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:34,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209424964] [2020-10-28 13:07:34,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:34,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:07:34,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1143859237] [2020-10-28 13:07:34,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:07:34,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:34,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:07:34,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:07:34,305 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-28 13:07:41,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:41,980 INFO L93 Difference]: Finished difference Result 1204 states and 2170 transitions. [2020-10-28 13:07:41,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:07:41,986 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-28 13:07:41,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:42,009 INFO L225 Difference]: With dead ends: 1204 [2020-10-28 13:07:42,010 INFO L226 Difference]: Without dead ends: 698 [2020-10-28 13:07:42,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:07:42,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 698 states. [2020-10-28 13:07:42,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 698 to 692. [2020-10-28 13:07:42,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 692 states. [2020-10-28 13:07:42,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1013 transitions. [2020-10-28 13:07:42,184 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1013 transitions. Word has length 20 [2020-10-28 13:07:42,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:42,185 INFO L481 AbstractCegarLoop]: Abstraction has 692 states and 1013 transitions. [2020-10-28 13:07:42,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:07:42,185 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1013 transitions. [2020-10-28 13:07:42,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-28 13:07:42,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:42,190 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:07:42,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:07:42,191 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:42,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:42,192 INFO L82 PathProgramCache]: Analyzing trace with hash 1145041078, now seen corresponding path program 1 times [2020-10-28 13:07:42,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:42,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589066667] [2020-10-28 13:07:42,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:42,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:42,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:44,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:44,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-28 13:07:44,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:44,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2028 [2020-10-28 13:07:44,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:44,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:44,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:07:44,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:07:44,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:44,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:44,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:44,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:44,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:44,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:44,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 13:07:44,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:44,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:44,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:44,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:44,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:07:44,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:44,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:44,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:07:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:44,828 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:44,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589066667] [2020-10-28 13:07:44,828 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:44,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:07:44,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652110729] [2020-10-28 13:07:44,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:44,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:44,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:44,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:44,832 INFO L87 Difference]: Start difference. First operand 692 states and 1013 transitions. Second operand 7 states. [2020-10-28 13:07:52,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:07:52,056 INFO L93 Difference]: Finished difference Result 1712 states and 2419 transitions. [2020-10-28 13:07:52,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:07:52,057 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 89 [2020-10-28 13:07:52,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:07:52,066 INFO L225 Difference]: With dead ends: 1712 [2020-10-28 13:07:52,066 INFO L226 Difference]: Without dead ends: 1026 [2020-10-28 13:07:52,069 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:07:52,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2020-10-28 13:07:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1015. [2020-10-28 13:07:52,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1015 states. [2020-10-28 13:07:52,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1368 transitions. [2020-10-28 13:07:52,144 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1368 transitions. Word has length 89 [2020-10-28 13:07:52,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:07:52,145 INFO L481 AbstractCegarLoop]: Abstraction has 1015 states and 1368 transitions. [2020-10-28 13:07:52,145 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:07:52,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1368 transitions. [2020-10-28 13:07:52,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 13:07:52,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:07:52,155 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 13:07:52,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:07:52,156 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:07:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:07:52,157 INFO L82 PathProgramCache]: Analyzing trace with hash 22068786, now seen corresponding path program 1 times [2020-10-28 13:07:52,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:07:52,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [656012507] [2020-10-28 13:07:52,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:07:52,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:52,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:53,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:53,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-28 13:07:53,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:07:53,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-10-28 13:07:53,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:53,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:53,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:07:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:07:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:07:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:07:53,239 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:07:53,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:07:53,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:53,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:53,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:53,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:07:53,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:53,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 13:07:53,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:53,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:07:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:07:53,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:07:53,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:07:53,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:07:53,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:07:53,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:07:53,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:07:53,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:07:53,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-28 13:07:53,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:07:53,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:07:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:07:53,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:07:53,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:07:53,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:07:53,535 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:07:53,536 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [656012507] [2020-10-28 13:07:53,536 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:07:53,536 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:07:53,536 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936034779] [2020-10-28 13:07:53,537 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:07:53,537 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:07:53,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:07:53,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:07:53,538 INFO L87 Difference]: Start difference. First operand 1015 states and 1368 transitions. Second operand 7 states. [2020-10-28 13:08:02,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:02,124 INFO L93 Difference]: Finished difference Result 2388 states and 3398 transitions. [2020-10-28 13:08:02,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:08:02,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 94 [2020-10-28 13:08:02,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:02,141 INFO L225 Difference]: With dead ends: 2388 [2020-10-28 13:08:02,141 INFO L226 Difference]: Without dead ends: 1686 [2020-10-28 13:08:02,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:02,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1686 states. [2020-10-28 13:08:02,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1686 to 1336. [2020-10-28 13:08:02,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1336 states. [2020-10-28 13:08:02,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1336 states to 1336 states and 1730 transitions. [2020-10-28 13:08:02,213 INFO L78 Accepts]: Start accepts. Automaton has 1336 states and 1730 transitions. Word has length 94 [2020-10-28 13:08:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:02,214 INFO L481 AbstractCegarLoop]: Abstraction has 1336 states and 1730 transitions. [2020-10-28 13:08:02,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:02,215 INFO L276 IsEmpty]: Start isEmpty. Operand 1336 states and 1730 transitions. [2020-10-28 13:08:02,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-28 13:08:02,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:02,219 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 13:08:02,219 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:08:02,220 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:02,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:02,221 INFO L82 PathProgramCache]: Analyzing trace with hash -411585464, now seen corresponding path program 1 times [2020-10-28 13:08:02,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:02,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693145906] [2020-10-28 13:08:02,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:02,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:02,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:03,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:03,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:07,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:07,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 13:08:07,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:08:07,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 13:08:07,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:07,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:07,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:08:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:08:07,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:08:07,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:07,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:07,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:07,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:07,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:07,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:08:07,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:07,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:07,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:07,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:07,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:07,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:08:07,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:07,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-28 13:08:07,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:07,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:07,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:08:07,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:07,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:08:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:07,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:08,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:08,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-28 13:08:08,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:08,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-28 13:08:08,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:08,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:08,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-28 13:08:08,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:08,135 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 86 proven. 12 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:08:08,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693145906] [2020-10-28 13:08:08,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:08,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 13:08:08,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793014091] [2020-10-28 13:08:08,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 13:08:08,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:08,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 13:08:08,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:08:08,138 INFO L87 Difference]: Start difference. First operand 1336 states and 1730 transitions. Second operand 6 states. [2020-10-28 13:08:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:15,862 INFO L93 Difference]: Finished difference Result 3352 states and 4488 transitions. [2020-10-28 13:08:15,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 13:08:15,864 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 194 [2020-10-28 13:08:15,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:15,878 INFO L225 Difference]: With dead ends: 3352 [2020-10-28 13:08:15,878 INFO L226 Difference]: Without dead ends: 2022 [2020-10-28 13:08:15,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:08:15,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2022 states. [2020-10-28 13:08:15,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2022 to 1995. [2020-10-28 13:08:15,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-10-28 13:08:15,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 2481 transitions. [2020-10-28 13:08:15,955 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 2481 transitions. Word has length 194 [2020-10-28 13:08:15,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:15,956 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 2481 transitions. [2020-10-28 13:08:15,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 13:08:15,956 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 2481 transitions. [2020-10-28 13:08:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2020-10-28 13:08:15,961 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:15,961 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:08:15,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:08:15,962 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:15,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:15,962 INFO L82 PathProgramCache]: Analyzing trace with hash -687128037, now seen corresponding path program 1 times [2020-10-28 13:08:15,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:15,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836341085] [2020-10-28 13:08:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:16,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:16,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:16,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:17,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:18,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:20,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-10-28 13:08:20,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:08:20,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4757 [2020-10-28 13:08:20,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:20,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:20,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-28 13:08:20,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:08:20,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:20,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:20,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:20,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:20,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:20,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 13:08:20,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:20,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:21,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:21,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:21,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-28 13:08:21,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:21,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-28 13:08:21,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:21,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:21,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 13:08:21,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:21,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 13:08:21,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:21,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:21,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:21,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-28 13:08:21,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:21,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-28 13:08:21,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:21,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:21,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 13:08:21,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 116 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:08:21,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836341085] [2020-10-28 13:08:21,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:21,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:21,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863731036] [2020-10-28 13:08:21,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:21,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:21,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:21,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:21,645 INFO L87 Difference]: Start difference. First operand 1995 states and 2481 transitions. Second operand 7 states. [2020-10-28 13:08:24,499 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:08:33,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:33,583 INFO L93 Difference]: Finished difference Result 5627 states and 7195 transitions. [2020-10-28 13:08:33,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:08:33,584 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 238 [2020-10-28 13:08:33,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:33,602 INFO L225 Difference]: With dead ends: 5627 [2020-10-28 13:08:33,602 INFO L226 Difference]: Without dead ends: 2977 [2020-10-28 13:08:33,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:08:33,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2020-10-28 13:08:33,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2619. [2020-10-28 13:08:33,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2619 states. [2020-10-28 13:08:33,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 2992 transitions. [2020-10-28 13:08:33,705 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 2992 transitions. Word has length 238 [2020-10-28 13:08:33,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:33,705 INFO L481 AbstractCegarLoop]: Abstraction has 2619 states and 2992 transitions. [2020-10-28 13:08:33,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 2992 transitions. [2020-10-28 13:08:33,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 306 [2020-10-28 13:08:33,711 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:33,711 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:33,712 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:08:33,712 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:33,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:33,713 INFO L82 PathProgramCache]: Analyzing trace with hash 363934329, now seen corresponding path program 1 times [2020-10-28 13:08:33,713 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:33,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1726145792] [2020-10-28 13:08:33,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:33,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:33,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:35,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:38,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:38,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 319 [2020-10-28 13:08:38,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:08:38,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 13:08:38,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:38,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:38,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:08:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:08:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-28 13:08:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:38,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:38,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:38,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:38,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:38,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:38,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:38,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-28 13:08:38,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:38,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:38,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:38,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:08:38,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:08:39,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:08:39,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-28 13:08:39,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:39,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:08:39,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:39,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 13:08:39,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:39,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:39,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:39,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:08:39,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:39,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 13:08:39,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:39,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-28 13:08:39,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:39,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:40,296 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 24 proven. 80 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 13:08:40,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1726145792] [2020-10-28 13:08:40,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:40,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:40,297 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222758204] [2020-10-28 13:08:40,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:40,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:40,298 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:40,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:40,299 INFO L87 Difference]: Start difference. First operand 2619 states and 2992 transitions. Second operand 7 states. [2020-10-28 13:08:42,657 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-28 13:08:47,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:08:47,985 INFO L93 Difference]: Finished difference Result 5591 states and 6361 transitions. [2020-10-28 13:08:47,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 13:08:47,993 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 305 [2020-10-28 13:08:47,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:08:48,008 INFO L225 Difference]: With dead ends: 5591 [2020-10-28 13:08:48,008 INFO L226 Difference]: Without dead ends: 2978 [2020-10-28 13:08:48,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:08:48,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2978 states. [2020-10-28 13:08:48,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2978 to 2932. [2020-10-28 13:08:48,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2932 states. [2020-10-28 13:08:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2932 states to 2932 states and 3313 transitions. [2020-10-28 13:08:48,100 INFO L78 Accepts]: Start accepts. Automaton has 2932 states and 3313 transitions. Word has length 305 [2020-10-28 13:08:48,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:08:48,101 INFO L481 AbstractCegarLoop]: Abstraction has 2932 states and 3313 transitions. [2020-10-28 13:08:48,101 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:08:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2932 states and 3313 transitions. [2020-10-28 13:08:48,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 380 [2020-10-28 13:08:48,108 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:08:48,109 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:08:48,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:08:48,109 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:08:48,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:08:48,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1108682690, now seen corresponding path program 1 times [2020-10-28 13:08:48,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:08:48,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258769113] [2020-10-28 13:08:48,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:08:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:50,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 393 [2020-10-28 13:08:50,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:08:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1946 [2020-10-28 13:08:50,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:50,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:08:50,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 13:08:50,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:08:50,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:08:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:50,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:50,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:08:50,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:50,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 13:08:50,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:50,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:50,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:08:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:50,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:08:50,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:08:50,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:08:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:50,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:50,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:50,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:08:50,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:50,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-28 13:08:50,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:50,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:50,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:08:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:08:50,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:08:50,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:50,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:08:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:08:50,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:08:51,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:08:51,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-28 13:08:51,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:08:51,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-28 13:08:51,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:08:51,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:08:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:08:51,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:08:51,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 13:08:51,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:08:51,376 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:08:51,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258769113] [2020-10-28 13:08:51,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:08:51,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:08:51,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658343722] [2020-10-28 13:08:51,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:08:51,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:08:51,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:08:51,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:08:51,380 INFO L87 Difference]: Start difference. First operand 2932 states and 3313 transitions. Second operand 7 states. [2020-10-28 13:09:00,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:00,694 INFO L93 Difference]: Finished difference Result 6898 states and 8061 transitions. [2020-10-28 13:09:00,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 13:09:00,696 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 379 [2020-10-28 13:09:00,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:00,718 INFO L225 Difference]: With dead ends: 6898 [2020-10-28 13:09:00,719 INFO L226 Difference]: Without dead ends: 4279 [2020-10-28 13:09:00,726 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 13:09:00,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4279 states. [2020-10-28 13:09:00,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4279 to 4223. [2020-10-28 13:09:00,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4223 states. [2020-10-28 13:09:00,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4223 states to 4223 states and 4727 transitions. [2020-10-28 13:09:00,883 INFO L78 Accepts]: Start accepts. Automaton has 4223 states and 4727 transitions. Word has length 379 [2020-10-28 13:09:00,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:00,884 INFO L481 AbstractCegarLoop]: Abstraction has 4223 states and 4727 transitions. [2020-10-28 13:09:00,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:09:00,885 INFO L276 IsEmpty]: Start isEmpty. Operand 4223 states and 4727 transitions. [2020-10-28 13:09:00,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 406 [2020-10-28 13:09:00,893 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:00,894 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:00,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:09:00,894 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:00,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:00,895 INFO L82 PathProgramCache]: Analyzing trace with hash -460504000, now seen corresponding path program 1 times [2020-10-28 13:09:00,895 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:00,896 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1327456448] [2020-10-28 13:09:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:01,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:01,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:04,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:04,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 419 [2020-10-28 13:09:04,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:09:04,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3301 [2020-10-28 13:09:04,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:04,327 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-28 13:09:04,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 13:09:04,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:04,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:04,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:04,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:04,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:04,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:04,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:04,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:04,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:04,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:04,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:04,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:04,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:04,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:04,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:04,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:04,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-28 13:09:04,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:04,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-28 13:09:04,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:04,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:04,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-28 13:09:04,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-28 13:09:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:05,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:05,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:05,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:05,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:05,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-28 13:09:05,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:05,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:05,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:09:05,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:05,927 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 132 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:09:05,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1327456448] [2020-10-28 13:09:05,929 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:05,929 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:09:05,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173397505] [2020-10-28 13:09:05,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:09:05,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:05,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:09:05,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:09:05,934 INFO L87 Difference]: Start difference. First operand 4223 states and 4727 transitions. Second operand 8 states. [2020-10-28 13:09:19,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:19,337 INFO L93 Difference]: Finished difference Result 10085 states and 11509 transitions. [2020-10-28 13:09:19,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 13:09:19,339 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 405 [2020-10-28 13:09:19,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:19,371 INFO L225 Difference]: With dead ends: 10085 [2020-10-28 13:09:19,372 INFO L226 Difference]: Without dead ends: 6175 [2020-10-28 13:09:19,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-28 13:09:19,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6175 states. [2020-10-28 13:09:19,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6175 to 5829. [2020-10-28 13:09:19,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5829 states. [2020-10-28 13:09:19,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5829 states to 5829 states and 6479 transitions. [2020-10-28 13:09:19,552 INFO L78 Accepts]: Start accepts. Automaton has 5829 states and 6479 transitions. Word has length 405 [2020-10-28 13:09:19,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:19,553 INFO L481 AbstractCegarLoop]: Abstraction has 5829 states and 6479 transitions. [2020-10-28 13:09:19,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:09:19,553 INFO L276 IsEmpty]: Start isEmpty. Operand 5829 states and 6479 transitions. [2020-10-28 13:09:19,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 418 [2020-10-28 13:09:19,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:19,562 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:19,562 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:09:19,563 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:19,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:19,563 INFO L82 PathProgramCache]: Analyzing trace with hash -1512962632, now seen corresponding path program 1 times [2020-10-28 13:09:19,563 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:19,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369542661] [2020-10-28 13:09:19,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:19,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:20,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:20,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 431 [2020-10-28 13:09:20,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:20,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 848 [2020-10-28 13:09:20,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:20,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:09:20,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 13:09:20,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:20,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:20,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:20,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:20,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:20,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:20,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:20,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:09:20,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:20,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:20,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:20,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:20,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:20,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:20,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:20,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:20,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:09:20,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:20,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-28 13:09:20,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:20,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:20,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:20,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:20,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:20,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:21,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:09:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:21,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:21,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:09:21,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-28 13:09:21,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:21,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:21,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:09:21,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:21,498 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-28 13:09:21,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369542661] [2020-10-28 13:09:21,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:21,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:09:21,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323180562] [2020-10-28 13:09:21,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:09:21,501 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:21,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:09:21,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:09:21,501 INFO L87 Difference]: Start difference. First operand 5829 states and 6479 transitions. Second operand 5 states. [2020-10-28 13:09:35,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:35,412 INFO L93 Difference]: Finished difference Result 13655 states and 15508 transitions. [2020-10-28 13:09:35,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:09:35,415 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 417 [2020-10-28 13:09:35,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:35,451 INFO L225 Difference]: With dead ends: 13655 [2020-10-28 13:09:35,451 INFO L226 Difference]: Without dead ends: 8139 [2020-10-28 13:09:35,467 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:09:35,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8139 states. [2020-10-28 13:09:35,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8139 to 8118. [2020-10-28 13:09:35,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8118 states. [2020-10-28 13:09:35,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 9242 transitions. [2020-10-28 13:09:35,791 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 9242 transitions. Word has length 417 [2020-10-28 13:09:35,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:35,792 INFO L481 AbstractCegarLoop]: Abstraction has 8118 states and 9242 transitions. [2020-10-28 13:09:35,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:09:35,793 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 9242 transitions. [2020-10-28 13:09:35,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 458 [2020-10-28 13:09:35,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:35,805 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 13:09:35,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:09:35,805 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:35,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:35,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1128041661, now seen corresponding path program 1 times [2020-10-28 13:09:35,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:35,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1369233606] [2020-10-28 13:09:35,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:35,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:36,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:36,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:36,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:39,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:40,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:40,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 471 [2020-10-28 13:09:40,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 13:09:40,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 13:09:40,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:40,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 247 [2020-10-28 13:09:40,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 203 [2020-10-28 13:09:40,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:41,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:09:41,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:41,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:41,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:09:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:41,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:09:41,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:41,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-28 13:09:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-28 13:09:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:41,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:09:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:09:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 232 [2020-10-28 13:09:41,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:09:41,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 245 [2020-10-28 13:09:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:41,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:41,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:09:41,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-28 13:09:41,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:09:41,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 378 [2020-10-28 13:09:41,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:09:41,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:09:41,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-28 13:09:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:09:42,827 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:09:42,827 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1369233606] [2020-10-28 13:09:42,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:09:42,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 13:09:42,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928418066] [2020-10-28 13:09:42,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:09:42,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:09:42,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:09:42,829 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:09:42,829 INFO L87 Difference]: Start difference. First operand 8118 states and 9242 transitions. Second operand 8 states. [2020-10-28 13:09:47,264 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:09:48,202 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:09:58,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:09:58,768 INFO L93 Difference]: Finished difference Result 18771 states and 21844 transitions. [2020-10-28 13:09:58,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:09:58,772 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 457 [2020-10-28 13:09:58,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:09:58,802 INFO L225 Difference]: With dead ends: 18771 [2020-10-28 13:09:58,802 INFO L226 Difference]: Without dead ends: 10338 [2020-10-28 13:09:58,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-28 13:09:58,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10338 states. [2020-10-28 13:09:59,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10338 to 10295. [2020-10-28 13:09:59,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10295 states. [2020-10-28 13:09:59,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10295 states to 10295 states and 11656 transitions. [2020-10-28 13:09:59,038 INFO L78 Accepts]: Start accepts. Automaton has 10295 states and 11656 transitions. Word has length 457 [2020-10-28 13:09:59,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:09:59,039 INFO L481 AbstractCegarLoop]: Abstraction has 10295 states and 11656 transitions. [2020-10-28 13:09:59,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:09:59,039 INFO L276 IsEmpty]: Start isEmpty. Operand 10295 states and 11656 transitions. [2020-10-28 13:09:59,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 494 [2020-10-28 13:09:59,044 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:09:59,045 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:09:59,045 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:09:59,045 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:09:59,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:09:59,046 INFO L82 PathProgramCache]: Analyzing trace with hash 1130239045, now seen corresponding path program 1 times [2020-10-28 13:09:59,046 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:09:59,046 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903735525] [2020-10-28 13:09:59,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:09:59,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:09:59,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:09:59,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:01,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 509 [2020-10-28 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2717 [2020-10-28 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:01,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:01,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:10:01,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,086 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:10:02,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:02,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:02,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:10:02,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:02,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:02,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:02,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:02,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-28 13:10:02,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:02,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:02,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:02,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:02,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:02,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:10:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-28 13:10:02,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:02,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:10:02,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:02,959 INFO L134 CoverageAnalysis]: Checked inductivity of 299 backedges. 187 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:10:02,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903735525] [2020-10-28 13:10:02,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:02,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:02,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735831509] [2020-10-28 13:10:02,962 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:02,963 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:02,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:02,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:02,965 INFO L87 Difference]: Start difference. First operand 10295 states and 11656 transitions. Second operand 7 states. [2020-10-28 13:10:14,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:14,506 INFO L93 Difference]: Finished difference Result 23439 states and 27203 transitions. [2020-10-28 13:10:14,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:10:14,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 493 [2020-10-28 13:10:14,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:14,568 INFO L225 Difference]: With dead ends: 23439 [2020-10-28 13:10:14,568 INFO L226 Difference]: Without dead ends: 13457 [2020-10-28 13:10:14,592 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:14,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13457 states. [2020-10-28 13:10:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13457 to 11864. [2020-10-28 13:10:14,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11864 states. [2020-10-28 13:10:14,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11864 states to 11864 states and 13674 transitions. [2020-10-28 13:10:14,902 INFO L78 Accepts]: Start accepts. Automaton has 11864 states and 13674 transitions. Word has length 493 [2020-10-28 13:10:14,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:14,904 INFO L481 AbstractCegarLoop]: Abstraction has 11864 states and 13674 transitions. [2020-10-28 13:10:14,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:14,904 INFO L276 IsEmpty]: Start isEmpty. Operand 11864 states and 13674 transitions. [2020-10-28 13:10:14,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 511 [2020-10-28 13:10:14,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:14,911 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:14,911 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 13:10:14,912 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:14,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash -116238687, now seen corresponding path program 1 times [2020-10-28 13:10:14,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:14,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [795467415] [2020-10-28 13:10:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:15,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:15,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:15,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:17,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:17,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 526 [2020-10-28 13:10:17,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:10:17,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2431 [2020-10-28 13:10:17,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:17,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:17,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-28 13:10:17,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-28 13:10:17,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:17,848 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-28 13:10:17,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:17,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:17,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:17,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:17,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:17,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:10:17,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:17,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:17,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:17,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:17,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:17,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:18,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:18,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:18,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:18,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-28 13:10:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:18,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:18,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:18,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:18,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:18,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:18,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:18,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:18,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-28 13:10:18,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:18,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:18,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:10:18,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:18,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:18,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:18,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:18,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:18,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 13:10:18,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-28 13:10:18,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:18,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 13:10:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 333 backedges. 221 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-28 13:10:18,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [795467415] [2020-10-28 13:10:18,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:18,932 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:10:18,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657250213] [2020-10-28 13:10:18,933 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:10:18,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:18,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:10:18,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:10:18,934 INFO L87 Difference]: Start difference. First operand 11864 states and 13674 transitions. Second operand 7 states. [2020-10-28 13:10:30,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:30,576 INFO L93 Difference]: Finished difference Result 26881 states and 31891 transitions. [2020-10-28 13:10:30,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:10:30,579 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 510 [2020-10-28 13:10:30,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:30,638 INFO L225 Difference]: With dead ends: 26881 [2020-10-28 13:10:30,638 INFO L226 Difference]: Without dead ends: 15330 [2020-10-28 13:10:30,668 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:10:30,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15330 states. [2020-10-28 13:10:31,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15330 to 15313. [2020-10-28 13:10:31,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15313 states. [2020-10-28 13:10:31,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15313 states to 15313 states and 17496 transitions. [2020-10-28 13:10:31,134 INFO L78 Accepts]: Start accepts. Automaton has 15313 states and 17496 transitions. Word has length 510 [2020-10-28 13:10:31,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:31,136 INFO L481 AbstractCegarLoop]: Abstraction has 15313 states and 17496 transitions. [2020-10-28 13:10:31,136 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:10:31,136 INFO L276 IsEmpty]: Start isEmpty. Operand 15313 states and 17496 transitions. [2020-10-28 13:10:31,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 583 [2020-10-28 13:10:31,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:31,146 INFO L422 BasicCegarLoop]: trace histogram [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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:31,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 13:10:31,146 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:31,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:31,147 INFO L82 PathProgramCache]: Analyzing trace with hash -432550795, now seen corresponding path program 1 times [2020-10-28 13:10:31,147 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:31,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2131581527] [2020-10-28 13:10:31,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:31,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:32,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:32,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1549 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:10:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:33,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:33,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:33,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:33,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:33,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:33,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:33,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:33,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-28 13:10:33,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:33,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:33,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:33,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:33,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:33,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:33,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:33,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-28 13:10:33,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:33,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:10:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:33,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-28 13:10:33,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:33,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:33,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:33,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:10:33,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:10:33,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-28 13:10:33,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:34,488 INFO L134 CoverageAnalysis]: Checked inductivity of 423 backedges. 306 proven. 114 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 13:10:34,488 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2131581527] [2020-10-28 13:10:34,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:34,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 13:10:34,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768602382] [2020-10-28 13:10:34,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 13:10:34,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:34,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 13:10:34,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-28 13:10:34,491 INFO L87 Difference]: Start difference. First operand 15313 states and 17496 transitions. Second operand 10 states. [2020-10-28 13:10:34,748 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 63 [2020-10-28 13:10:38,864 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 63 [2020-10-28 13:10:40,761 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 67 [2020-10-28 13:10:47,284 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-28 13:10:51,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:10:51,470 INFO L93 Difference]: Finished difference Result 33800 states and 39490 transitions. [2020-10-28 13:10:51,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 13:10:51,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 582 [2020-10-28 13:10:51,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:10:51,529 INFO L225 Difference]: With dead ends: 33800 [2020-10-28 13:10:51,529 INFO L226 Difference]: Without dead ends: 18800 [2020-10-28 13:10:51,551 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=216, Invalid=840, Unknown=0, NotChecked=0, Total=1056 [2020-10-28 13:10:51,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18800 states. [2020-10-28 13:10:51,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18800 to 18744. [2020-10-28 13:10:51,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18744 states. [2020-10-28 13:10:51,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18744 states to 18744 states and 21371 transitions. [2020-10-28 13:10:51,933 INFO L78 Accepts]: Start accepts. Automaton has 18744 states and 21371 transitions. Word has length 582 [2020-10-28 13:10:51,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:10:51,934 INFO L481 AbstractCegarLoop]: Abstraction has 18744 states and 21371 transitions. [2020-10-28 13:10:51,934 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 13:10:51,934 INFO L276 IsEmpty]: Start isEmpty. Operand 18744 states and 21371 transitions. [2020-10-28 13:10:51,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 645 [2020-10-28 13:10:51,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:10:51,946 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:10:51,946 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 13:10:51,947 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:10:51,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:10:51,948 INFO L82 PathProgramCache]: Analyzing trace with hash 610790380, now seen corresponding path program 1 times [2020-10-28 13:10:51,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:10:51,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1823139272] [2020-10-28 13:10:51,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:10:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:52,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:52,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:53,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:54,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:55,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 662 [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4768 [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:56,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 537 [2020-10-28 13:10:56,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:10:56,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:57,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:10:57,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:57,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:57,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:57,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:57,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:57,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:10:57,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:57,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:57,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-28 13:10:57,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:57,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-28 13:10:57,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:57,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:57,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:57,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:57,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-28 13:10:57,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:57,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:10:57,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:57,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-28 13:10:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:57,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:57,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 13:10:57,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:10:57,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-28 13:10:57,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:57,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:10:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 121 [2020-10-28 13:10:57,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:10:57,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:10:57,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 533 [2020-10-28 13:10:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:10:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:10:57,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:10:57,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 100 [2020-10-28 13:10:57,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:10:57,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 13:10:57,597 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:10:57,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:10:57,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:10:57,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:10:57,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:10:57,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:10:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 687 backedges. 62 proven. 2 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2020-10-28 13:10:57,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1823139272] [2020-10-28 13:10:57,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:10:57,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:10:57,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1300367462] [2020-10-28 13:10:57,915 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:10:57,916 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:10:57,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:10:57,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:10:57,917 INFO L87 Difference]: Start difference. First operand 18744 states and 21371 transitions. Second operand 5 states. [2020-10-28 13:10:58,107 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-28 13:11:05,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:11:05,407 INFO L93 Difference]: Finished difference Result 37482 states and 42753 transitions. [2020-10-28 13:11:05,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:11:05,410 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 644 [2020-10-28 13:11:05,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:11:05,459 INFO L225 Difference]: With dead ends: 37482 [2020-10-28 13:11:05,459 INFO L226 Difference]: Without dead ends: 19051 [2020-10-28 13:11:05,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:11:05,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19051 states. [2020-10-28 13:11:05,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19051 to 18740. [2020-10-28 13:11:05,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18740 states. [2020-10-28 13:11:05,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18740 states to 18740 states and 21341 transitions. [2020-10-28 13:11:05,873 INFO L78 Accepts]: Start accepts. Automaton has 18740 states and 21341 transitions. Word has length 644 [2020-10-28 13:11:05,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:11:05,874 INFO L481 AbstractCegarLoop]: Abstraction has 18740 states and 21341 transitions. [2020-10-28 13:11:05,874 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:11:05,874 INFO L276 IsEmpty]: Start isEmpty. Operand 18740 states and 21341 transitions. [2020-10-28 13:11:05,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 670 [2020-10-28 13:11:05,892 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:11:05,895 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:11:05,895 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 13:11:05,895 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:11:05,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:11:05,896 INFO L82 PathProgramCache]: Analyzing trace with hash -137985084, now seen corresponding path program 1 times [2020-10-28 13:11:05,896 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:11:05,897 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2138753073] [2020-10-28 13:11:05,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:11:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:11:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:06,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:08,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:11:09,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking...