/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:58:14,403 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:58:14,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:58:14,450 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:58:14,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:58:14,453 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:58:14,455 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:58:14,458 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:58:14,460 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:58:14,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:58:14,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:58:14,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:58:14,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:58:14,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:58:14,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:58:14,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:58:14,472 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:58:14,474 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:58:14,476 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:58:14,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:58:14,482 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:58:14,484 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:58:14,486 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:58:14,487 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:58:14,491 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:58:14,491 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:58:14,491 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:58:14,496 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:58:14,497 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:58:14,501 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:58:14,502 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:58:14,503 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:58:14,504 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:58:14,506 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:58:14,507 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:58:14,508 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:58:14,509 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:58:14,509 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:58:14,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:58:14,511 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:58:14,512 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:58:14,514 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 22:58:14,545 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:58:14,545 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:58:14,547 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:58:14,548 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:58:14,548 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:58:14,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:58:14,548 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:58:14,548 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:58:14,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:58:14,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:58:14,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:58:14,549 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:58:14,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:58:14,550 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:58:14,550 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:58:14,550 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:58:14,550 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:58:14,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:58:14,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:58:14,551 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:58:14,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:58:14,551 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:58:14,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:58:14,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:58:14,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:58:14,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:58:14,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:58:14,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:58:14,553 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:58:14,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:58:15,044 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:58:15,084 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:58:15,088 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:58:15,090 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:58:15,091 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:58:15,092 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-26 22:58:15,198 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d22111b5a/e361b2807541484a95279d0073cb8118/FLAGf6786b091 [2020-10-26 22:58:16,393 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:58:16,394 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-26 22:58:16,443 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d22111b5a/e361b2807541484a95279d0073cb8118/FLAGf6786b091 [2020-10-26 22:58:16,794 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d22111b5a/e361b2807541484a95279d0073cb8118 [2020-10-26 22:58:16,799 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:58:16,806 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:58:16,809 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:58:16,809 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:58:16,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:58:16,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:16" (1/1) ... [2020-10-26 22:58:16,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@305c2c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:16, skipping insertion in model container [2020-10-26 22:58:16,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:58:16" (1/1) ... [2020-10-26 22:58:16,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:58:17,012 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:58:18,507 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:58:18,533 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:58:19,212 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:58:19,255 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:58:19,255 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19 WrapperNode [2020-10-26 22:58:19,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:58:19,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:58:19,257 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:58:19,257 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:58:19,275 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,277 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,368 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,368 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,551 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,583 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,612 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... [2020-10-26 22:58:19,646 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:58:19,647 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:58:19,647 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:58:19,647 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:58:19,649 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:58:19,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:58:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:58:19,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:58:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:58:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 22:58:19,803 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 22:58:19,810 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 22:58:19,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:58:19,811 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 22:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 22:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 22:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:58:19,813 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:58:19,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:58:19,815 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:58:19,816 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:58:26,242 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:58:26,242 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:58:26,247 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:26 BoogieIcfgContainer [2020-10-26 22:58:26,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:58:26,255 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:58:26,256 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:58:26,260 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:58:26,260 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:58:16" (1/3) ... [2020-10-26 22:58:26,261 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56343c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:26, skipping insertion in model container [2020-10-26 22:58:26,261 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:58:19" (2/3) ... [2020-10-26 22:58:26,262 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@56343c1a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:58:26, skipping insertion in model container [2020-10-26 22:58:26,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:58:26" (3/3) ... [2020-10-26 22:58:26,264 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2020-10-26 22:58:26,280 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:58:26,287 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:58:26,304 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:58:26,356 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:58:26,357 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:58:26,357 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:58:26,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:58:26,357 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:58:26,357 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:58:26,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:58:26,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:58:26,412 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-26 22:58:26,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-26 22:58:26,425 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:26,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:26,426 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:26,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:26,437 INFO L82 PathProgramCache]: Analyzing trace with hash 213979348, now seen corresponding path program 1 times [2020-10-26 22:58:26,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:26,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776384251] [2020-10-26 22:58:26,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:26,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:26,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:27,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:27,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-26 22:58:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 692 [2020-10-26 22:58:27,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:58:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:27,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-26 22:58:27,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:58:27,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:27,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:27,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:27,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:27,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-26 22:58:27,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:27,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:27,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:27,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:27,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:58:27,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776384251] [2020-10-26 22:58:27,735 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:58:27,735 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-26 22:58:27,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453280925] [2020-10-26 22:58:27,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:58:27,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:27,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:58:27,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:58:27,768 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-26 22:58:40,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:40,372 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-26 22:58:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:58:40,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-26 22:58:40,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:40,411 INFO L225 Difference]: With dead ends: 2476 [2020-10-26 22:58:40,411 INFO L226 Difference]: Without dead ends: 1569 [2020-10-26 22:58:40,423 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 [2020-10-26 22:58:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-26 22:58:40,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-26 22:58:40,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-26 22:58:40,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-26 22:58:40,642 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 57 [2020-10-26 22:58:40,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:40,644 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-26 22:58:40,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:58:40,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-26 22:58:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-26 22:58:40,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:40,652 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:40,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:58:40,653 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:40,654 INFO L82 PathProgramCache]: Analyzing trace with hash -2013224363, now seen corresponding path program 1 times [2020-10-26 22:58:40,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:40,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1013333327] [2020-10-26 22:58:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:40,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:41,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:42,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:42,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-26 22:58:42,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:58:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1919 [2020-10-26 22:58:42,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 22:58:42,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:42,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-26 22:58:42,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:58:42,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:42,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:42,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:42,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:42,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:42,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:42,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 22:58:42,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:42,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:42,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:42,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:42,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:42,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:42,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:58:43,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-26 22:58:43,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:43,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:58:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:58:43,170 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 22:58:43,170 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1013333327] [2020-10-26 22:58:43,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:58:43,171 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:58:43,171 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599700908] [2020-10-26 22:58:43,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:58:43,174 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:43,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:58:43,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:58:43,178 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 6 states. [2020-10-26 22:58:56,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:58:56,467 INFO L93 Difference]: Finished difference Result 4722 states and 7738 transitions. [2020-10-26 22:58:56,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:58:56,469 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 132 [2020-10-26 22:58:56,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:58:56,494 INFO L225 Difference]: With dead ends: 4722 [2020-10-26 22:58:56,494 INFO L226 Difference]: Without dead ends: 3174 [2020-10-26 22:58:56,500 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:58:56,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3174 states. [2020-10-26 22:58:56,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3174 to 3139. [2020-10-26 22:58:56,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3139 states. [2020-10-26 22:58:56,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4479 transitions. [2020-10-26 22:58:56,646 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4479 transitions. Word has length 132 [2020-10-26 22:58:56,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:58:56,647 INFO L481 AbstractCegarLoop]: Abstraction has 3139 states and 4479 transitions. [2020-10-26 22:58:56,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:58:56,647 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4479 transitions. [2020-10-26 22:58:56,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-26 22:58:56,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:58:56,651 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:58:56,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:58:56,651 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:58:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:58:56,652 INFO L82 PathProgramCache]: Analyzing trace with hash -879723939, now seen corresponding path program 1 times [2020-10-26 22:58:56,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:58:56,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [245928139] [2020-10-26 22:58:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:58:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:57,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:58,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:58,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:58:58,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:58:58,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1298 [2020-10-26 22:58:58,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:58:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:58:58,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:58:58,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:58,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:58:58,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:58,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:58,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:58,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:58:58,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:58,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:58:58,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:58:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:58:58,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:58:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:58,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:58:58,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:58:58,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:58:58,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:58:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 22:58:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:58:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:58:58,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:58:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:58:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:58:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 22:58:58,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:58:58,423 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:58:58,435 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [245928139] [2020-10-26 22:58:58,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:58:58,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:58:58,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580336173] [2020-10-26 22:58:58,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:58:58,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:58:58,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:58:58,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:58:58,445 INFO L87 Difference]: Start difference. First operand 3139 states and 4479 transitions. Second operand 7 states. [2020-10-26 22:59:13,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:13,632 INFO L93 Difference]: Finished difference Result 9625 states and 13985 transitions. [2020-10-26 22:59:13,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:59:13,633 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-10-26 22:59:13,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:13,671 INFO L225 Difference]: With dead ends: 9625 [2020-10-26 22:59:13,672 INFO L226 Difference]: Without dead ends: 6492 [2020-10-26 22:59:13,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:59:13,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6492 states. [2020-10-26 22:59:13,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6492 to 6379. [2020-10-26 22:59:13,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6379 states. [2020-10-26 22:59:13,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6379 states to 6379 states and 8610 transitions. [2020-10-26 22:59:13,935 INFO L78 Accepts]: Start accepts. Automaton has 6379 states and 8610 transitions. Word has length 136 [2020-10-26 22:59:13,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:13,936 INFO L481 AbstractCegarLoop]: Abstraction has 6379 states and 8610 transitions. [2020-10-26 22:59:13,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:13,936 INFO L276 IsEmpty]: Start isEmpty. Operand 6379 states and 8610 transitions. [2020-10-26 22:59:13,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-26 22:59:13,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:13,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:59:13,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:59:13,950 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:13,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:13,951 INFO L82 PathProgramCache]: Analyzing trace with hash -184312159, now seen corresponding path program 1 times [2020-10-26 22:59:13,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:13,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028771303] [2020-10-26 22:59:13,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:14,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:14,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:15,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:15,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-26 22:59:15,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:59:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1454 [2020-10-26 22:59:15,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:59:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:59:15,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-26 22:59:15,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:15,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:15,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:15,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:15,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:15,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-26 22:59:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:15,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:59:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:15,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:15,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:15,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:15,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 22:59:15,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:15,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-10-26 22:59:15,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:15,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:15,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 22:59:15,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:16,098 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:59:16,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028771303] [2020-10-26 22:59:16,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:59:16,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:59:16,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1203339713] [2020-10-26 22:59:16,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:16,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:16,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:16,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:16,101 INFO L87 Difference]: Start difference. First operand 6379 states and 8610 transitions. Second operand 7 states. [2020-10-26 22:59:29,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:29,209 INFO L93 Difference]: Finished difference Result 19648 states and 27526 transitions. [2020-10-26 22:59:29,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:59:29,215 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 170 [2020-10-26 22:59:29,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:29,309 INFO L225 Difference]: With dead ends: 19648 [2020-10-26 22:59:29,309 INFO L226 Difference]: Without dead ends: 13275 [2020-10-26 22:59:29,334 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:59:29,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13275 states. [2020-10-26 22:59:29,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13275 to 13109. [2020-10-26 22:59:29,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13109 states. [2020-10-26 22:59:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13109 states to 13109 states and 17513 transitions. [2020-10-26 22:59:29,785 INFO L78 Accepts]: Start accepts. Automaton has 13109 states and 17513 transitions. Word has length 170 [2020-10-26 22:59:29,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:29,787 INFO L481 AbstractCegarLoop]: Abstraction has 13109 states and 17513 transitions. [2020-10-26 22:59:29,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:29,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13109 states and 17513 transitions. [2020-10-26 22:59:29,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 253 [2020-10-26 22:59:29,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:29,794 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-26 22:59:29,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:59:29,794 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:29,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:29,795 INFO L82 PathProgramCache]: Analyzing trace with hash -1985366106, now seen corresponding path program 1 times [2020-10-26 22:59:29,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:29,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [966662792] [2020-10-26 22:59:29,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:29,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:30,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:31,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:31,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-26 22:59:31,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:59:31,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1672 [2020-10-26 22:59:31,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:59:31,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-26 22:59:31,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:31,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:31,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:31,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:31,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:31,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:31,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:31,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:59:31,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:59:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:31,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:59:31,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:31,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:31,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:31,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:31,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:59:31,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 22:59:31,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:31,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:59:31,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:31,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:59:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:31,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:32,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:32,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-26 22:59:32,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:32,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 22:59:32,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:32,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:32,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:32,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:59:32,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:59:32,400 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:59:32,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [966662792] [2020-10-26 22:59:32,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:59:32,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:59:32,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436552637] [2020-10-26 22:59:32,402 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:32,402 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:32,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:32,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:32,403 INFO L87 Difference]: Start difference. First operand 13109 states and 17513 transitions. Second operand 7 states. [2020-10-26 22:59:51,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:59:51,567 INFO L93 Difference]: Finished difference Result 34535 states and 49807 transitions. [2020-10-26 22:59:51,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:59:51,569 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 252 [2020-10-26 22:59:51,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:59:51,677 INFO L225 Difference]: With dead ends: 34535 [2020-10-26 22:59:51,678 INFO L226 Difference]: Without dead ends: 21432 [2020-10-26 22:59:51,724 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:59:51,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21432 states. [2020-10-26 22:59:52,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21432 to 21178. [2020-10-26 22:59:52,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21178 states. [2020-10-26 22:59:52,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21178 states to 21178 states and 28004 transitions. [2020-10-26 22:59:52,411 INFO L78 Accepts]: Start accepts. Automaton has 21178 states and 28004 transitions. Word has length 252 [2020-10-26 22:59:52,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:59:52,412 INFO L481 AbstractCegarLoop]: Abstraction has 21178 states and 28004 transitions. [2020-10-26 22:59:52,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:59:52,412 INFO L276 IsEmpty]: Start isEmpty. Operand 21178 states and 28004 transitions. [2020-10-26 22:59:52,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-26 22:59:52,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:59:52,421 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 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] [2020-10-26 22:59:52,421 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:59:52,421 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:59:52,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:59:52,422 INFO L82 PathProgramCache]: Analyzing trace with hash 1768246318, now seen corresponding path program 1 times [2020-10-26 22:59:52,422 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:59:52,423 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047977515] [2020-10-26 22:59:52,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:59:52,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:52,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:52,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:53,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-26 22:59:54,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:59:54,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-26 22:59:54,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-26 22:59:54,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:59:54,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:59:54,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:54,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:59:54,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:59:54,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:59:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:54,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:59:54,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:59:54,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:54,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:59:54,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:54,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-26 22:59:54,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:59:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:59:54,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 22:59:54,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-26 22:59:54,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:59:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:59:54,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:59:54,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-26 22:59:54,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:59:54,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-26 22:59:54,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:59:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:59:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:59:54,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:59:54,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:59:54,945 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:59:54,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2047977515] [2020-10-26 22:59:54,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:59:54,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:59:54,947 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689926319] [2020-10-26 22:59:54,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:59:54,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:59:54,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:59:54,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:59:54,951 INFO L87 Difference]: Start difference. First operand 21178 states and 28004 transitions. Second operand 7 states. [2020-10-26 23:00:19,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:19,001 INFO L93 Difference]: Finished difference Result 63935 states and 94725 transitions. [2020-10-26 23:00:19,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:00:19,004 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-26 23:00:19,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:19,201 INFO L225 Difference]: With dead ends: 63935 [2020-10-26 23:00:19,201 INFO L226 Difference]: Without dead ends: 36205 [2020-10-26 23:00:19,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:00:19,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36205 states. [2020-10-26 23:00:20,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36205 to 36029. [2020-10-26 23:00:20,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36029 states. [2020-10-26 23:00:20,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36029 states to 36029 states and 47520 transitions. [2020-10-26 23:00:20,448 INFO L78 Accepts]: Start accepts. Automaton has 36029 states and 47520 transitions. Word has length 256 [2020-10-26 23:00:20,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:20,449 INFO L481 AbstractCegarLoop]: Abstraction has 36029 states and 47520 transitions. [2020-10-26 23:00:20,449 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:20,449 INFO L276 IsEmpty]: Start isEmpty. Operand 36029 states and 47520 transitions. [2020-10-26 23:00:20,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2020-10-26 23:00:20,454 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:20,455 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:00:20,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:00:20,455 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:20,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:20,456 INFO L82 PathProgramCache]: Analyzing trace with hash 1299583809, now seen corresponding path program 1 times [2020-10-26 23:00:20,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:20,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423230903] [2020-10-26 23:00:20,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:20,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:20,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:21,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:22,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:22,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 267 [2020-10-26 23:00:22,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:22,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2182 [2020-10-26 23:00:22,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:22,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:00:22,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-26 23:00:22,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:22,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:22,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:22,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:22,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:22,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-26 23:00:22,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:00:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:22,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:22,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:23,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:23,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-26 23:00:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:23,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 402 [2020-10-26 23:00:23,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-26 23:00:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:23,652 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:00:23,652 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423230903] [2020-10-26 23:00:23,652 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:00:23,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:00:23,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470426320] [2020-10-26 23:00:23,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:00:23,654 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:23,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:00:23,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:00:23,655 INFO L87 Difference]: Start difference. First operand 36029 states and 47520 transitions. Second operand 7 states. [2020-10-26 23:00:40,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:00:40,586 INFO L93 Difference]: Finished difference Result 82857 states and 110024 transitions. [2020-10-26 23:00:40,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:00:40,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 255 [2020-10-26 23:00:40,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:00:40,770 INFO L225 Difference]: With dead ends: 82857 [2020-10-26 23:00:40,771 INFO L226 Difference]: Without dead ends: 46838 [2020-10-26 23:00:40,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:00:41,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46838 states. [2020-10-26 23:00:42,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46838 to 45066. [2020-10-26 23:00:42,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45066 states. [2020-10-26 23:00:42,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45066 states to 45066 states and 54231 transitions. [2020-10-26 23:00:42,426 INFO L78 Accepts]: Start accepts. Automaton has 45066 states and 54231 transitions. Word has length 255 [2020-10-26 23:00:42,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:00:42,427 INFO L481 AbstractCegarLoop]: Abstraction has 45066 states and 54231 transitions. [2020-10-26 23:00:42,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:00:42,427 INFO L276 IsEmpty]: Start isEmpty. Operand 45066 states and 54231 transitions. [2020-10-26 23:00:42,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2020-10-26 23:00:42,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:00:42,434 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:00:42,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:00:42,434 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:00:42,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:00:42,435 INFO L82 PathProgramCache]: Analyzing trace with hash -739565308, now seen corresponding path program 1 times [2020-10-26 23:00:42,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:00:42,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [977941046] [2020-10-26 23:00:42,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:00:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:42,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:43,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:44,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:44,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:44,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-26 23:00:44,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:00:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1807 [2020-10-26 23:00:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:44,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:00:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-26 23:00:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-26 23:00:44,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:44,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:00:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:44,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:44,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:44,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:00:44,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:44,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:00:44,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:00:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:44,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:00:44,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:44,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:00:44,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:44,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:44,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-26 23:00:44,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:00:44,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-26 23:00:44,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:00:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:00:44,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-26 23:00:44,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:00:44,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-26 23:00:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:00:44,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:45,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:00:45,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:00:45,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:00:45,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:00:45,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 23:00:45,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:00:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:00:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:00:45,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:00:45,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:00:45,305 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 133 proven. 49 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:00:45,305 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [977941046] [2020-10-26 23:00:45,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:00:45,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 23:00:45,306 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419139141] [2020-10-26 23:00:45,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 23:00:45,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:00:45,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 23:00:45,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 23:00:45,308 INFO L87 Difference]: Start difference. First operand 45066 states and 54231 transitions. Second operand 8 states. [2020-10-26 23:01:16,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:16,149 INFO L93 Difference]: Finished difference Result 110249 states and 135461 transitions. [2020-10-26 23:01:16,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-26 23:01:16,152 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 291 [2020-10-26 23:01:16,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:16,392 INFO L225 Difference]: With dead ends: 110249 [2020-10-26 23:01:16,392 INFO L226 Difference]: Without dead ends: 65189 [2020-10-26 23:01:16,465 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-26 23:01:16,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65189 states. [2020-10-26 23:01:18,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65189 to 63522. [2020-10-26 23:01:18,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63522 states. [2020-10-26 23:01:18,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63522 states to 63522 states and 77410 transitions. [2020-10-26 23:01:18,459 INFO L78 Accepts]: Start accepts. Automaton has 63522 states and 77410 transitions. Word has length 291 [2020-10-26 23:01:18,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:18,460 INFO L481 AbstractCegarLoop]: Abstraction has 63522 states and 77410 transitions. [2020-10-26 23:01:18,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 23:01:18,461 INFO L276 IsEmpty]: Start isEmpty. Operand 63522 states and 77410 transitions. [2020-10-26 23:01:18,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-26 23:01:18,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:18,469 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 23:01:18,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:01:18,469 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:18,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:18,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1054391812, now seen corresponding path program 1 times [2020-10-26 23:01:18,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:18,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [759551114] [2020-10-26 23:01:18,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:18,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:18,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:21,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:21,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 309 [2020-10-26 23:01:21,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:01:21,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2402 [2020-10-26 23:01:21,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-26 23:01:21,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 23:01:21,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:21,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:01:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:21,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:21,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:21,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:01:21,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:21,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:01:21,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:01:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:21,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:01:21,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:21,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:01:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:21,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:21,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:21,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-26 23:01:21,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-26 23:01:21,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:01:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:01:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-26 23:01:21,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:21,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-26 23:01:21,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:21,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:21,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:01:21,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 23:01:21,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:01:21,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-26 23:01:21,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:01:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:01:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:01:21,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:01:21,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:01:22,050 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:01:22,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [759551114] [2020-10-26 23:01:22,051 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:01:22,051 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:01:22,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793839690] [2020-10-26 23:01:22,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:01:22,059 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:01:22,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:01:22,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:01:22,062 INFO L87 Difference]: Start difference. First operand 63522 states and 77410 transitions. Second operand 7 states. [2020-10-26 23:01:50,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:01:50,766 INFO L93 Difference]: Finished difference Result 157035 states and 205518 transitions. [2020-10-26 23:01:50,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:01:50,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 295 [2020-10-26 23:01:50,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:01:51,324 INFO L225 Difference]: With dead ends: 157035 [2020-10-26 23:01:51,324 INFO L226 Difference]: Without dead ends: 93519 [2020-10-26 23:01:51,565 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:01:51,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93519 states. [2020-10-26 23:01:53,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93519 to 92865. [2020-10-26 23:01:53,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92865 states. [2020-10-26 23:01:53,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92865 states to 92865 states and 111888 transitions. [2020-10-26 23:01:53,964 INFO L78 Accepts]: Start accepts. Automaton has 92865 states and 111888 transitions. Word has length 295 [2020-10-26 23:01:53,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:01:53,965 INFO L481 AbstractCegarLoop]: Abstraction has 92865 states and 111888 transitions. [2020-10-26 23:01:53,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:01:53,965 INFO L276 IsEmpty]: Start isEmpty. Operand 92865 states and 111888 transitions. [2020-10-26 23:01:53,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 462 [2020-10-26 23:01:53,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:01:53,985 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:01:53,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:01:53,986 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:01:53,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:01:53,986 INFO L82 PathProgramCache]: Analyzing trace with hash -918602271, now seen corresponding path program 1 times [2020-10-26 23:01:53,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:01:53,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181570860] [2020-10-26 23:01:53,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:01:54,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:01:54,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:01:54,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking...