/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=DEEPEST --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/Problem12_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:50:20,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:50:20,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:50:20,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:50:20,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:50:20,411 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:50:20,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:50:20,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:50:20,423 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:50:20,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:50:20,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:50:20,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:50:20,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:50:20,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:50:20,442 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:50:20,445 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:50:20,446 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:50:20,450 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:50:20,471 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:50:20,477 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:50:20,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:50:20,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:50:20,485 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:50:20,488 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:50:20,498 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:50:20,499 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:50:20,499 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:50:20,501 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:50:20,504 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:50:20,507 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:50:20,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:50:20,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:50:20,510 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:50:20,512 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:50:20,514 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:50:20,514 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:50:20,516 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:50:20,516 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:50:20,516 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:50:20,518 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:50:20,519 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:50:20,527 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 [2020-10-27 17:50:20,566 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:50:20,566 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:50:20,568 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:50:20,568 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:50:20,568 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:50:20,569 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:50:20,569 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:50:20,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:50:20,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:50:20,570 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:50:20,570 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:50:20,570 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:50:20,570 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:50:20,571 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:50:20,571 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:50:20,571 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:50:20,571 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:50:20,571 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:50:20,572 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:50:20,572 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:50:20,572 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:50:20,572 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:50:20,573 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:50:20,573 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:50:20,573 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:50:20,573 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:50:20,574 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:50:20,574 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:50:20,574 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:50:20,574 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:50:20,973 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:50:21,010 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:50:21,015 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:50:21,017 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:50:21,018 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:50:21,019 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label52.c [2020-10-27 17:50:21,128 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a0002b7d/9aabbdf9681e4a818656f00937545591/FLAGca6f5dce7 [2020-10-27 17:50:22,190 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:50:22,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label52.c [2020-10-27 17:50:22,237 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a0002b7d/9aabbdf9681e4a818656f00937545591/FLAGca6f5dce7 [2020-10-27 17:50:22,629 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8a0002b7d/9aabbdf9681e4a818656f00937545591 [2020-10-27 17:50:22,632 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:50:22,639 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:50:22,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:50:22,645 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:50:22,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:50:22,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:50:22" (1/1) ... [2020-10-27 17:50:22,656 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3965b1a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:22, skipping insertion in model container [2020-10-27 17:50:22,656 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:50:22" (1/1) ... [2020-10-27 17:50:22,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:50:22,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:50:24,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:50:24,506 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:50:25,239 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:50:25,278 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:50:25,279 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25 WrapperNode [2020-10-27 17:50:25,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:50:25,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:50:25,281 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:50:25,281 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:50:25,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,615 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (1/1) ... [2020-10-27 17:50:25,650 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:50:25,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:50:25,652 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:50:25,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:50:25,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (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 [2020-10-27 17:50:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:50:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:50:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:50:25,747 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:50:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:50:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:50:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:50:25,748 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:50:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:50:25,748 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:50:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:50:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:50:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:50:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:50:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:50:25,749 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:50:25,750 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:50:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:50:25,751 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:50:31,430 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:50:31,430 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:50:31,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:31 BoogieIcfgContainer [2020-10-27 17:50:31,438 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:50:31,442 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:50:31,443 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:50:31,449 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:50:31,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:50:22" (1/3) ... [2020-10-27 17:50:31,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393d446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:50:31, skipping insertion in model container [2020-10-27 17:50:31,451 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:25" (2/3) ... [2020-10-27 17:50:31,451 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@393d446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:50:31, skipping insertion in model container [2020-10-27 17:50:31,452 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:31" (3/3) ... [2020-10-27 17:50:31,454 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label52.c [2020-10-27 17:50:31,469 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:50:31,486 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:50:31,502 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:50:31,563 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:50:31,564 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:50:31,564 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:50:31,564 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:50:31,564 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:50:31,564 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:50:31,565 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:50:31,565 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:50:31,628 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:50:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 17:50:31,639 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:31,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:31,641 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:31,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:31,654 INFO L82 PathProgramCache]: Analyzing trace with hash -895518588, now seen corresponding path program 1 times [2020-10-27 17:50:31,666 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:31,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [350788027] [2020-10-27 17:50:31,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:32,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:32,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:32,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 17:50:32,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:32,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 17:50:32,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:50:32,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:50:32,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 17:50:32,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:50:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:32,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:32,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:32,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:32,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:32,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:50:32,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:32,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:32,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:50:32,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:32,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:32,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [350788027] [2020-10-27 17:50:32,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:50:32,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:50:32,793 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114702325] [2020-10-27 17:50:32,799 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:32,800 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:32,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:32,818 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:50:44,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:44,861 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-27 17:50:44,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:44,865 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 37 [2020-10-27 17:50:44,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:44,899 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:50:44,899 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:50:44,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:44,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:50:45,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-27 17:50:45,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-27 17:50:45,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-27 17:50:45,119 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 37 [2020-10-27 17:50:45,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:45,120 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-27 17:50:45,120 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:45,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-27 17:50:45,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 17:50:45,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:45,127 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:45,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:50:45,128 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:45,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:45,129 INFO L82 PathProgramCache]: Analyzing trace with hash 165879237, now seen corresponding path program 1 times [2020-10-27 17:50:45,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:45,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307440483] [2020-10-27 17:50:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:45,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:46,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:46,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-27 17:50:46,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:50:46,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 944 [2020-10-27 17:50:46,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:46,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:46,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:50:46,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 17:50:46,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:50:46,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:46,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:46,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:46,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:46,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:46,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:46,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 17:50:46,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:46,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:46,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:46,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:50:46,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:46,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:46,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:46,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:46,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:50:46,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:46,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 17:50:46,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:46,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:50:46,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:46,631 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:46,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307440483] [2020-10-27 17:50:46,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:46,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:50:46,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945599719] [2020-10-27 17:50:46,635 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:50:46,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:46,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:50:46,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:46,640 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-27 17:51:02,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:02,254 INFO L93 Difference]: Finished difference Result 3895 states and 6554 transitions. [2020-10-27 17:51:02,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:51:02,256 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 112 [2020-10-27 17:51:02,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:02,273 INFO L225 Difference]: With dead ends: 3895 [2020-10-27 17:51:02,273 INFO L226 Difference]: Without dead ends: 2347 [2020-10-27 17:51:02,279 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:51:02,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-27 17:51:02,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2343. [2020-10-27 17:51:02,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2343 states. [2020-10-27 17:51:02,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2343 states to 2343 states and 3591 transitions. [2020-10-27 17:51:02,383 INFO L78 Accepts]: Start accepts. Automaton has 2343 states and 3591 transitions. Word has length 112 [2020-10-27 17:51:02,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:02,384 INFO L481 AbstractCegarLoop]: Abstraction has 2343 states and 3591 transitions. [2020-10-27 17:51:02,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:51:02,384 INFO L276 IsEmpty]: Start isEmpty. Operand 2343 states and 3591 transitions. [2020-10-27 17:51:02,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 17:51:02,387 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:02,388 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:02,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:51:02,388 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:02,389 INFO L82 PathProgramCache]: Analyzing trace with hash 1418634049, now seen corresponding path program 1 times [2020-10-27 17:51:02,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:02,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889463832] [2020-10-27 17:51:02,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:02,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:02,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:02,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:03,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:04,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:04,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:51:04,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:51:04,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1960 [2020-10-27 17:51:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 17:51:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 17:51:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:04,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:04,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:04,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:04,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:04,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:04,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:51:04,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:04,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:04,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:04,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:04,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:04,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:04,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:04,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 17:51:04,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:04,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 17:51:04,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:04,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 17:51:04,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:04,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889463832] [2020-10-27 17:51:04,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:04,750 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:04,750 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659738190] [2020-10-27 17:51:04,751 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:04,751 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:04,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:04,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:04,752 INFO L87 Difference]: Start difference. First operand 2343 states and 3591 transitions. Second operand 5 states. [2020-10-27 17:51:17,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:17,350 INFO L93 Difference]: Finished difference Result 7018 states and 10861 transitions. [2020-10-27 17:51:17,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:17,355 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 115 [2020-10-27 17:51:17,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:17,387 INFO L225 Difference]: With dead ends: 7018 [2020-10-27 17:51:17,388 INFO L226 Difference]: Without dead ends: 4681 [2020-10-27 17:51:17,396 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:17,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4681 states. [2020-10-27 17:51:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4681 to 4677. [2020-10-27 17:51:17,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4677 states. [2020-10-27 17:51:17,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4677 states to 4677 states and 6377 transitions. [2020-10-27 17:51:17,548 INFO L78 Accepts]: Start accepts. Automaton has 4677 states and 6377 transitions. Word has length 115 [2020-10-27 17:51:17,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:17,549 INFO L481 AbstractCegarLoop]: Abstraction has 4677 states and 6377 transitions. [2020-10-27 17:51:17,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:17,549 INFO L276 IsEmpty]: Start isEmpty. Operand 4677 states and 6377 transitions. [2020-10-27 17:51:17,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-27 17:51:17,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:17,554 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:17,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:51:17,554 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:17,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:17,555 INFO L82 PathProgramCache]: Analyzing trace with hash -175347871, now seen corresponding path program 1 times [2020-10-27 17:51:17,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:17,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252204888] [2020-10-27 17:51:17,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:17,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:17,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:17,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:18,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:18,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 17:51:18,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:51:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1315 [2020-10-27 17:51:18,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 17:51:18,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 17:51:18,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:19,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:19,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:19,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:19,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:19,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:19,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:51:19,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:19,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:19,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:19,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:19,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:19,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:19,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:51:19,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:19,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 17:51:19,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:19,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:51:19,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:19,300 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:19,301 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252204888] [2020-10-27 17:51:19,301 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:19,301 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:19,301 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738299884] [2020-10-27 17:51:19,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:19,302 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:19,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:19,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:19,303 INFO L87 Difference]: Start difference. First operand 4677 states and 6377 transitions. Second operand 5 states. [2020-10-27 17:51:34,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:34,436 INFO L93 Difference]: Finished difference Result 14012 states and 19414 transitions. [2020-10-27 17:51:34,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:34,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-27 17:51:34,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:34,495 INFO L225 Difference]: With dead ends: 14012 [2020-10-27 17:51:34,495 INFO L226 Difference]: Without dead ends: 9341 [2020-10-27 17:51:34,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:34,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9341 states. [2020-10-27 17:51:34,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9341 to 9333. [2020-10-27 17:51:34,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9333 states. [2020-10-27 17:51:34,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9333 states to 9333 states and 12037 transitions. [2020-10-27 17:51:34,793 INFO L78 Accepts]: Start accepts. Automaton has 9333 states and 12037 transitions. Word has length 131 [2020-10-27 17:51:34,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:34,794 INFO L481 AbstractCegarLoop]: Abstraction has 9333 states and 12037 transitions. [2020-10-27 17:51:34,794 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:34,794 INFO L276 IsEmpty]: Start isEmpty. Operand 9333 states and 12037 transitions. [2020-10-27 17:51:34,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-27 17:51:34,804 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:34,804 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:34,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:51:34,805 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:34,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:34,805 INFO L82 PathProgramCache]: Analyzing trace with hash 1997140064, now seen corresponding path program 1 times [2020-10-27 17:51:34,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:34,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764191033] [2020-10-27 17:51:34,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:34,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:34,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:35,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:38,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:38,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 17:51:38,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:51:38,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3475 [2020-10-27 17:51:38,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:38,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:38,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 161 [2020-10-27 17:51:38,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 17:51:38,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:38,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:38,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:38,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:38,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:38,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:38,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:38,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:51:38,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:38,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:38,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:38,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:38,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:38,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:38,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 17:51:38,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:38,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 17:51:38,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:38,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:38,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:38,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 17:51:38,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:38,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:38,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:38,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 17:51:38,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:38,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 17:51:38,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:38,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:38,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 17:51:38,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 17:51:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-10-27 17:51:38,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764191033] [2020-10-27 17:51:38,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:38,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:38,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937376107] [2020-10-27 17:51:38,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:38,774 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:38,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:38,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:38,777 INFO L87 Difference]: Start difference. First operand 9333 states and 12037 transitions. Second operand 5 states. [2020-10-27 17:51:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:53,559 INFO L93 Difference]: Finished difference Result 27983 states and 36979 transitions. [2020-10-27 17:51:53,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:53,561 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 186 [2020-10-27 17:51:53,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:53,646 INFO L225 Difference]: With dead ends: 27983 [2020-10-27 17:51:53,646 INFO L226 Difference]: Without dead ends: 18656 [2020-10-27 17:51:53,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:53,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18656 states. [2020-10-27 17:51:54,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18656 to 18639. [2020-10-27 17:51:54,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18639 states. [2020-10-27 17:51:54,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18639 states to 18639 states and 23831 transitions. [2020-10-27 17:51:54,175 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 23831 transitions. Word has length 186 [2020-10-27 17:51:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:54,177 INFO L481 AbstractCegarLoop]: Abstraction has 18639 states and 23831 transitions. [2020-10-27 17:51:54,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 23831 transitions. [2020-10-27 17:51:54,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-27 17:51:54,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:54,186 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:51:54,186 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:51:54,186 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:54,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:54,187 INFO L82 PathProgramCache]: Analyzing trace with hash -1411208302, now seen corresponding path program 1 times [2020-10-27 17:51:54,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:54,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216402185] [2020-10-27 17:51:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:54,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:54,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:55,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:58,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:59,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:59,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-27 17:51:59,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:51:59,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 17:51:59,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 178 [2020-10-27 17:51:59,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 17:51:59,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:59,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:59,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:59,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:59,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:59,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:59,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:51:59,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:59,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:59,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:59,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:59,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:59,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:59,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:51:59,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:59,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 17:51:59,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:59,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:59,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:59,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:59,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 17:51:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:59,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:59,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:59,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:51:59,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:59,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 17:51:59,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:59,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:51:59,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:51:59,768 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 59 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 17:51:59,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216402185] [2020-10-27 17:51:59,770 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:59,770 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:59,770 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563165920] [2020-10-27 17:51:59,771 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:59,771 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:59,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:59,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:59,774 INFO L87 Difference]: Start difference. First operand 18639 states and 23831 transitions. Second operand 5 states. [2020-10-27 17:52:08,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:08,628 INFO L93 Difference]: Finished difference Result 37301 states and 47785 transitions. [2020-10-27 17:52:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:08,630 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 203 [2020-10-27 17:52:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:08,697 INFO L225 Difference]: With dead ends: 37301 [2020-10-27 17:52:08,697 INFO L226 Difference]: Without dead ends: 18656 [2020-10-27 17:52:08,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:08,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18656 states. [2020-10-27 17:52:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18656 to 18639. [2020-10-27 17:52:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18639 states. [2020-10-27 17:52:09,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18639 states to 18639 states and 23827 transitions. [2020-10-27 17:52:09,185 INFO L78 Accepts]: Start accepts. Automaton has 18639 states and 23827 transitions. Word has length 203 [2020-10-27 17:52:09,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:09,185 INFO L481 AbstractCegarLoop]: Abstraction has 18639 states and 23827 transitions. [2020-10-27 17:52:09,186 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:09,186 INFO L276 IsEmpty]: Start isEmpty. Operand 18639 states and 23827 transitions. [2020-10-27 17:52:09,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2020-10-27 17:52:09,195 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:09,195 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:09,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:52:09,196 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:09,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:09,196 INFO L82 PathProgramCache]: Analyzing trace with hash 1204071161, now seen corresponding path program 1 times [2020-10-27 17:52:09,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:09,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [541320076] [2020-10-27 17:52:09,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:09,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:09,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:09,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:10,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:10,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 219 [2020-10-27 17:52:10,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:10,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-10-27 17:52:10,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 180 [2020-10-27 17:52:10,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-27 17:52:10,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:10,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:10,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:10,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:10,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:10,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:10,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:52:10,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:10,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:10,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:10,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:10,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:10,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:10,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:10,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:10,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 17:52:10,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-10-27 17:52:10,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:10,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:52:10,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:11,047 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:52:11,047 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [541320076] [2020-10-27 17:52:11,047 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:11,047 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:52:11,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [446310892] [2020-10-27 17:52:11,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:52:11,048 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:11,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:52:11,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:11,050 INFO L87 Difference]: Start difference. First operand 18639 states and 23827 transitions. Second operand 6 states. [2020-10-27 17:52:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:33,957 INFO L93 Difference]: Finished difference Result 51252 states and 69737 transitions. [2020-10-27 17:52:33,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:52:33,959 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 207 [2020-10-27 17:52:33,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:34,083 INFO L225 Difference]: With dead ends: 51252 [2020-10-27 17:52:34,083 INFO L226 Difference]: Without dead ends: 32619 [2020-10-27 17:52:34,127 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:52:34,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32619 states. [2020-10-27 17:52:34,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32619 to 32599. [2020-10-27 17:52:34,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32599 states. [2020-10-27 17:52:34,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32599 states to 32599 states and 42335 transitions. [2020-10-27 17:52:34,917 INFO L78 Accepts]: Start accepts. Automaton has 32599 states and 42335 transitions. Word has length 207 [2020-10-27 17:52:34,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:34,918 INFO L481 AbstractCegarLoop]: Abstraction has 32599 states and 42335 transitions. [2020-10-27 17:52:34,918 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:52:34,918 INFO L276 IsEmpty]: Start isEmpty. Operand 32599 states and 42335 transitions. [2020-10-27 17:52:35,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 725 [2020-10-27 17:52:35,007 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:35,008 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:35,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:52:35,009 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:35,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1809002492, now seen corresponding path program 1 times [2020-10-27 17:52:35,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:35,010 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33593285] [2020-10-27 17:52:35,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:35,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:36,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:37,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:40,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:40,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 742 [2020-10-27 17:52:40,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:52:40,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-27 17:52:40,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:40,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:52:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 104 [2020-10-27 17:52:40,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 594 [2020-10-27 17:52:40,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:52:40,558 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:52:40,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:40,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:40,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:40,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:40,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:40,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:40,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:52:40,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:40,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:40,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:52:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:40,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:40,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:52:40,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 17:52:40,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:40,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:52:40,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:52:40,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 17:52:41,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:43,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:43,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-27 17:52:43,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:43,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-27 17:52:43,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:52:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:43,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 598 [2020-10-27 17:52:43,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:43,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:52:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:44,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:44,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 17:52:44,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1014 [2020-10-27 17:52:44,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:52:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:44,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 17:52:44,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:44,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:52:44,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:44,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:45,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:45,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 17:52:45,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:45,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-27 17:52:45,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:52:45,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:45,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:52:45,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:52:47,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33593285] [2020-10-27 17:52:47,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:47,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 17:52:47,002 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363840609] [2020-10-27 17:52:47,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 17:52:47,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:47,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 17:52:47,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:52:47,005 INFO L87 Difference]: Start difference. First operand 32599 states and 42335 transitions. Second operand 9 states. [2020-10-27 17:53:23,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:23,394 INFO L93 Difference]: Finished difference Result 77678 states and 116288 transitions. [2020-10-27 17:53:23,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 17:53:23,397 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 724 [2020-10-27 17:53:23,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:23,694 INFO L225 Difference]: With dead ends: 77678 [2020-10-27 17:53:23,694 INFO L226 Difference]: Without dead ends: 45085 [2020-10-27 17:53:23,770 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-27 17:53:23,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45085 states. [2020-10-27 17:53:25,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45085 to 44245. [2020-10-27 17:53:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44245 states. [2020-10-27 17:53:25,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44245 states to 44245 states and 58845 transitions. [2020-10-27 17:53:25,568 INFO L78 Accepts]: Start accepts. Automaton has 44245 states and 58845 transitions. Word has length 724 [2020-10-27 17:53:25,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:25,570 INFO L481 AbstractCegarLoop]: Abstraction has 44245 states and 58845 transitions. [2020-10-27 17:53:25,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 17:53:25,570 INFO L276 IsEmpty]: Start isEmpty. Operand 44245 states and 58845 transitions. [2020-10-27 17:53:25,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 749 [2020-10-27 17:53:25,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:25,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:53:25,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:53:25,707 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:25,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:25,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1193914412, now seen corresponding path program 1 times [2020-10-27 17:53:25,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:25,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [678237291] [2020-10-27 17:53:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:25,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:27,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:27,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:30,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:30,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 766 [2020-10-27 17:53:30,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:53:30,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 17:53:30,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:30,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:53:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-27 17:53:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 594 [2020-10-27 17:53:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:53:31,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:31,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:31,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:31,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:31,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:31,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:31,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 17:53:31,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:31,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:31,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:31,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:31,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:31,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:31,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:31,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 17:53:31,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:31,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 17:53:31,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:31,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 17:53:31,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:31,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 17:53:31,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:31,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 598 [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1529 [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:53:33,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:53:33,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 598 [2020-10-27 17:53:33,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:33,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:53:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:33,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:34,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:34,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 17:53:34,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 716 [2020-10-27 17:53:34,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:53:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:53:34,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-10-27 17:53:34,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:34,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:53:34,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:34,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:34,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:34,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-27 17:53:34,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:34,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 17:53:34,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:53:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:53:34,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:53:34,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:35,544 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:53:35,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [678237291] [2020-10-27 17:53:35,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:35,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:53:35,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126012530] [2020-10-27 17:53:35,546 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:53:35,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:35,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:53:35,555 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:53:35,555 INFO L87 Difference]: Start difference. First operand 44245 states and 58845 transitions. Second operand 7 states. [2020-10-27 17:53:56,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:56,914 INFO L93 Difference]: Finished difference Result 82814 states and 112821 transitions. [2020-10-27 17:53:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:53:56,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 748 [2020-10-27 17:53:56,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:57,086 INFO L225 Difference]: With dead ends: 82814 [2020-10-27 17:53:57,086 INFO L226 Difference]: Without dead ends: 42404 [2020-10-27 17:53:57,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:53:57,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42404 states. [2020-10-27 17:53:57,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42404 to 42271. [2020-10-27 17:53:57,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42271 states. [2020-10-27 17:53:58,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42271 states to 42271 states and 52126 transitions. [2020-10-27 17:53:58,056 INFO L78 Accepts]: Start accepts. Automaton has 42271 states and 52126 transitions. Word has length 748 [2020-10-27 17:53:58,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:58,058 INFO L481 AbstractCegarLoop]: Abstraction has 42271 states and 52126 transitions. [2020-10-27 17:53:58,058 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:53:58,058 INFO L276 IsEmpty]: Start isEmpty. Operand 42271 states and 52126 transitions. [2020-10-27 17:53:58,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2020-10-27 17:53:58,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:58,192 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:53:58,193 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:53:58,193 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:58,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:58,194 INFO L82 PathProgramCache]: Analyzing trace with hash 1388187392, now seen corresponding path program 1 times [2020-10-27 17:53:58,194 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:58,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752312302] [2020-10-27 17:53:58,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:58,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:58,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking...