/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:14:00,196 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:14:00,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:14:00,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:14:00,238 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:14:00,239 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:14:00,241 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:14:00,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:14:00,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:14:00,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:14:00,249 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:14:00,250 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:14:00,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:14:00,252 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:14:00,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:14:00,259 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:14:00,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:14:00,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:14:00,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:14:00,266 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:14:00,268 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:14:00,271 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:14:00,272 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:14:00,273 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:14:00,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:14:00,289 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:14:00,290 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:14:00,293 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:14:00,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:14:00,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:14:00,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:14:00,297 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:14:00,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:14:00,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:14:00,304 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:14:00,304 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:14:00,305 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:14:00,305 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:14:00,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:14:00,307 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:14:00,308 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:14:00,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:14:00,384 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:14:00,384 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:14:00,391 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:14:00,391 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:14:00,391 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:14:00,392 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:14:00,395 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:14:00,395 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:14:00,396 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:14:00,396 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:14:00,397 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:14:00,397 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:14:00,397 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:14:00,397 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:14:00,398 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:14:00,398 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:14:00,399 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:14:00,400 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:14:00,400 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:14:00,401 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:14:00,401 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:14:00,401 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:14:00,401 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:14:00,402 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:14:00,402 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:14:00,402 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:14:00,402 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:14:00,402 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:14:00,403 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:14:00,403 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:14:00,855 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:14:00,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:14:00,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:14:00,928 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:14:00,929 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:14:00,930 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-29 07:14:01,028 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b5d378d/4f8d3e7be79c4d76995d6a169886ed37/FLAGcb092ad71 [2020-10-29 07:14:02,387 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:14:02,388 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label19.c [2020-10-29 07:14:02,430 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b5d378d/4f8d3e7be79c4d76995d6a169886ed37/FLAGcb092ad71 [2020-10-29 07:14:02,646 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37b5d378d/4f8d3e7be79c4d76995d6a169886ed37 [2020-10-29 07:14:02,651 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:14:02,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:14:02,668 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:14:02,668 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:14:02,673 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:14:02,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:14:02" (1/1) ... [2020-10-29 07:14:02,681 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d5ba39e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:02, skipping insertion in model container [2020-10-29 07:14:02,681 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:14:02" (1/1) ... [2020-10-29 07:14:02,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:14:02,919 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:14:04,955 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:14:04,971 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:14:06,075 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:14:06,124 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:14:06,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06 WrapperNode [2020-10-29 07:14:06,125 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:14:06,127 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:14:06,127 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:14:06,127 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:14:06,147 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,432 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... [2020-10-29 07:14:06,595 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:14:06,598 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:14:06,598 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:14:06,598 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:14:06,600 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:14:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:14:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:14:06,686 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:14:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:14:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:14:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:14:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:14:06,687 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:14:06,687 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:14:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:14:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:14:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:14:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:14:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:14:06,688 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:14:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:14:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:14:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:14:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:14:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:14:06,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:14:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:14:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:14:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:14:06,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:14:17,861 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:14:17,861 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:14:17,869 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:14:17 BoogieIcfgContainer [2020-10-29 07:14:17,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:14:17,876 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:14:17,876 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:14:17,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:14:17,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:14:02" (1/3) ... [2020-10-29 07:14:17,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615f31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:14:17, skipping insertion in model container [2020-10-29 07:14:17,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:14:06" (2/3) ... [2020-10-29 07:14:17,885 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615f31a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:14:17, skipping insertion in model container [2020-10-29 07:14:17,885 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:14:17" (3/3) ... [2020-10-29 07:14:17,889 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label19.c [2020-10-29 07:14:17,913 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:14:17,922 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:14:17,942 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:14:17,991 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:14:17,992 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:14:17,992 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:14:17,992 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:14:17,992 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:14:17,992 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:14:17,992 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:14:17,992 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:14:18,047 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:14:18,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 07:14:18,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:18,063 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] [2020-10-29 07:14:18,064 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:18,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:18,074 INFO L82 PathProgramCache]: Analyzing trace with hash -22941566, now seen corresponding path program 1 times [2020-10-29 07:14:18,084 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:18,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165123000] [2020-10-29 07:14:18,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:18,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:18,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 07:14:18,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:18,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 610 [2020-10-29 07:14:18,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:18,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:18,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 07:14:18,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:14:19,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:19,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:19,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:19,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:19,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:19,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:19,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-29 07:14:19,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:19,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:19,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:19,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:14:19,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:19,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165123000] [2020-10-29 07:14:19,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:19,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:14:19,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792537630] [2020-10-29 07:14:19,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:14:19,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:19,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:14:19,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:14:19,312 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-29 07:14:41,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:14:41,166 INFO L93 Difference]: Finished difference Result 3112 states and 5735 transitions. [2020-10-29 07:14:41,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:14:41,174 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-10-29 07:14:41,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:14:41,228 INFO L225 Difference]: With dead ends: 3112 [2020-10-29 07:14:41,229 INFO L226 Difference]: Without dead ends: 1904 [2020-10-29 07:14:41,246 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:14:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1904 states. [2020-10-29 07:14:41,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1904 to 1884. [2020-10-29 07:14:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1884 states. [2020-10-29 07:14:41,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2891 transitions. [2020-10-29 07:14:41,466 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2891 transitions. Word has length 24 [2020-10-29 07:14:41,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:14:41,467 INFO L481 AbstractCegarLoop]: Abstraction has 1884 states and 2891 transitions. [2020-10-29 07:14:41,467 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:14:41,467 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2891 transitions. [2020-10-29 07:14:41,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-29 07:14:41,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:14:41,473 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:14:41,474 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:14:41,474 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:14:41,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:14:41,475 INFO L82 PathProgramCache]: Analyzing trace with hash -1910687866, now seen corresponding path program 1 times [2020-10-29 07:14:41,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:14:41,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136916177] [2020-10-29 07:14:41,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:14:41,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:41,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:42,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:43,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:43,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 07:14:43,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:14:43,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1532 [2020-10-29 07:14:43,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:43,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:43,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:14:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:43,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:14:43,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:14:43,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:43,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:43,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:43,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:43,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:43,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:43,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:14:43,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:43,246 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:43,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 07:14:43,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:43,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:43,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:43,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:14:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:14:43,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:43,512 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:14:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:14:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:14:43,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:14:43,740 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:14:43,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136916177] [2020-10-29 07:14:43,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:14:43,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:14:43,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326738159] [2020-10-29 07:14:43,745 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:43,745 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:43,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:43,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:43,750 INFO L87 Difference]: Start difference. First operand 1884 states and 2891 transitions. Second operand 7 states. [2020-10-29 07:15:07,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:07,140 INFO L93 Difference]: Finished difference Result 5679 states and 8693 transitions. [2020-10-29 07:15:07,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:15:07,143 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 93 [2020-10-29 07:15:07,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:07,180 INFO L225 Difference]: With dead ends: 5679 [2020-10-29 07:15:07,181 INFO L226 Difference]: Without dead ends: 3801 [2020-10-29 07:15:07,189 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:15:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3801 states. [2020-10-29 07:15:07,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3801 to 3709. [2020-10-29 07:15:07,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3709 states. [2020-10-29 07:15:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3709 states to 3709 states and 5285 transitions. [2020-10-29 07:15:07,382 INFO L78 Accepts]: Start accepts. Automaton has 3709 states and 5285 transitions. Word has length 93 [2020-10-29 07:15:07,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:07,383 INFO L481 AbstractCegarLoop]: Abstraction has 3709 states and 5285 transitions. [2020-10-29 07:15:07,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:15:07,384 INFO L276 IsEmpty]: Start isEmpty. Operand 3709 states and 5285 transitions. [2020-10-29 07:15:07,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-29 07:15:07,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:07,396 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:15:07,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:15:07,397 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:07,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:07,399 INFO L82 PathProgramCache]: Analyzing trace with hash 1206531254, now seen corresponding path program 1 times [2020-10-29 07:15:07,399 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:07,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252668695] [2020-10-29 07:15:07,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:07,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:07,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:08,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:08,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:08,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-29 07:15:08,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:15:08,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1128 [2020-10-29 07:15:08,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:08,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:15:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:15:08,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:15:08,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:15:08,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:08,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:08,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:08,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:08,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:08,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:08,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:15:08,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:08,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:08,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:15:08,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:08,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:09,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:09,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:15:09,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:09,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-10-29 07:15:09,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:09,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:09,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:09,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:15:09,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:15:09,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:09,257 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:15:09,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252668695] [2020-10-29 07:15:09,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:15:09,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:15:09,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899986102] [2020-10-29 07:15:09,259 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:15:09,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:09,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:15:09,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:15:09,264 INFO L87 Difference]: Start difference. First operand 3709 states and 5285 transitions. Second operand 8 states. [2020-10-29 07:15:45,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:15:45,142 INFO L93 Difference]: Finished difference Result 14200 states and 20633 transitions. [2020-10-29 07:15:45,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:15:45,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 101 [2020-10-29 07:15:45,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:15:45,208 INFO L225 Difference]: With dead ends: 14200 [2020-10-29 07:15:45,208 INFO L226 Difference]: Without dead ends: 10497 [2020-10-29 07:15:45,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:15:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10497 states. [2020-10-29 07:15:45,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10497 to 10440. [2020-10-29 07:15:45,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10440 states. [2020-10-29 07:15:45,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10440 states to 10440 states and 13832 transitions. [2020-10-29 07:15:45,553 INFO L78 Accepts]: Start accepts. Automaton has 10440 states and 13832 transitions. Word has length 101 [2020-10-29 07:15:45,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:15:45,554 INFO L481 AbstractCegarLoop]: Abstraction has 10440 states and 13832 transitions. [2020-10-29 07:15:45,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:15:45,554 INFO L276 IsEmpty]: Start isEmpty. Operand 10440 states and 13832 transitions. [2020-10-29 07:15:45,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-29 07:15:45,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:15:45,565 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 07:15:45,566 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:15:45,566 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:15:45,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:15:45,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1802594663, now seen corresponding path program 1 times [2020-10-29 07:15:45,568 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:15:45,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221221143] [2020-10-29 07:15:45,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:15:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:45,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:45,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:45,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-29 07:15:45,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:45,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-29 07:15:45,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:45,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:15:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-29 07:15:45,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 07:15:45,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:46,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:15:46,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:46,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:46,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:46,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:15:46,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:15:46,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:46,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:15:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:46,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:15:46,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:15:46,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:15:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:15:46,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:15:46,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:15:46,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:15:46,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:15:46,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-29 07:15:46,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:15:46,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:15:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:15:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:15:46,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:15:46,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:15:46,420 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:15:46,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221221143] [2020-10-29 07:15:46,420 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:15:46,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:15:46,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915540623] [2020-10-29 07:15:46,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:15:46,423 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:15:46,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:15:46,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:15:46,424 INFO L87 Difference]: Start difference. First operand 10440 states and 13832 transitions. Second operand 5 states. [2020-10-29 07:16:07,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:07,938 INFO L93 Difference]: Finished difference Result 22521 states and 31122 transitions. [2020-10-29 07:16:07,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:16:07,940 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 153 [2020-10-29 07:16:07,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:08,009 INFO L225 Difference]: With dead ends: 22521 [2020-10-29 07:16:08,009 INFO L226 Difference]: Without dead ends: 12890 [2020-10-29 07:16:08,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:16:08,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12890 states. [2020-10-29 07:16:08,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12890 to 12861. [2020-10-29 07:16:08,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12861 states. [2020-10-29 07:16:08,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12861 states to 12861 states and 16900 transitions. [2020-10-29 07:16:08,341 INFO L78 Accepts]: Start accepts. Automaton has 12861 states and 16900 transitions. Word has length 153 [2020-10-29 07:16:08,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:08,342 INFO L481 AbstractCegarLoop]: Abstraction has 12861 states and 16900 transitions. [2020-10-29 07:16:08,342 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:16:08,342 INFO L276 IsEmpty]: Start isEmpty. Operand 12861 states and 16900 transitions. [2020-10-29 07:16:08,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-29 07:16:08,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:08,347 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:08,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:16:08,347 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:08,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:08,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1014592226, now seen corresponding path program 1 times [2020-10-29 07:16:08,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:08,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151542336] [2020-10-29 07:16:08,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:08,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:08,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:08,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:08,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:12,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:12,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-29 07:16:12,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:16:12,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4096 [2020-10-29 07:16:12,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:12,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:16:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:12,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-29 07:16:12,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:12,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:12,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:12,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:12,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:12,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:12,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:16:12,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:12,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:12,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:12,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:12,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:12,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:12,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:16:12,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-29 07:16:12,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:12,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-29 07:16:12,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:13,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:16:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:13,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:13,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 07:16:13,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:13,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:16:13,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:13,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:16:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 07:16:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:16:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:13,344 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 32 proven. 72 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:16:13,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151542336] [2020-10-29 07:16:13,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:16:13,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:16:13,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067009141] [2020-10-29 07:16:13,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:13,346 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:13,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:13,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:13,347 INFO L87 Difference]: Start difference. First operand 12861 states and 16900 transitions. Second operand 7 states. [2020-10-29 07:16:33,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:16:33,370 INFO L93 Difference]: Finished difference Result 25218 states and 33554 transitions. [2020-10-29 07:16:33,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 07:16:33,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 194 [2020-10-29 07:16:33,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:16:33,430 INFO L225 Difference]: With dead ends: 25218 [2020-10-29 07:16:33,430 INFO L226 Difference]: Without dead ends: 13166 [2020-10-29 07:16:33,458 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:16:33,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13166 states. [2020-10-29 07:16:33,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13166 to 13058. [2020-10-29 07:16:33,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13058 states. [2020-10-29 07:16:33,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13058 states to 13058 states and 17307 transitions. [2020-10-29 07:16:33,763 INFO L78 Accepts]: Start accepts. Automaton has 13058 states and 17307 transitions. Word has length 194 [2020-10-29 07:16:33,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:16:33,764 INFO L481 AbstractCegarLoop]: Abstraction has 13058 states and 17307 transitions. [2020-10-29 07:16:33,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:16:33,764 INFO L276 IsEmpty]: Start isEmpty. Operand 13058 states and 17307 transitions. [2020-10-29 07:16:33,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-29 07:16:33,768 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:16:33,768 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:16:33,768 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:16:33,769 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:16:33,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:16:33,769 INFO L82 PathProgramCache]: Analyzing trace with hash -791107769, now seen corresponding path program 1 times [2020-10-29 07:16:33,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:16:33,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [52922287] [2020-10-29 07:16:33,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:16:33,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:33,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:33,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:36,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-29 07:16:36,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:16:36,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-29 07:16:36,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:36,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:16:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:16:36,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-29 07:16:36,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:36,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:16:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:36,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:36,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:16:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:16:36,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:36,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:36,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:16:36,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:16:36,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:16:36,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:36,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:36,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:16:36,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:16:36,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 07:16:36,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:36,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:16:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:16:36,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:16:36,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:36,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:16:36,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:16:36,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:16:36,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-29 07:16:36,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:16:36,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:16:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:16:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:16:36,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 07:16:36,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:16:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:16:36,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [52922287] [2020-10-29 07:16:36,950 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:16:36,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:16:36,951 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730648069] [2020-10-29 07:16:36,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:16:36,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:16:36,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:16:36,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:16:36,955 INFO L87 Difference]: Start difference. First operand 13058 states and 17307 transitions. Second operand 7 states. [2020-10-29 07:17:06,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:06,294 INFO L93 Difference]: Finished difference Result 35982 states and 50828 transitions. [2020-10-29 07:17:06,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:17:06,297 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 206 [2020-10-29 07:17:06,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:06,406 INFO L225 Difference]: With dead ends: 35982 [2020-10-29 07:17:06,406 INFO L226 Difference]: Without dead ends: 22925 [2020-10-29 07:17:06,449 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:17:06,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22925 states. [2020-10-29 07:17:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22925 to 22758. [2020-10-29 07:17:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22758 states. [2020-10-29 07:17:07,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22758 states to 22758 states and 29910 transitions. [2020-10-29 07:17:07,140 INFO L78 Accepts]: Start accepts. Automaton has 22758 states and 29910 transitions. Word has length 206 [2020-10-29 07:17:07,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:07,141 INFO L481 AbstractCegarLoop]: Abstraction has 22758 states and 29910 transitions. [2020-10-29 07:17:07,141 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:17:07,141 INFO L276 IsEmpty]: Start isEmpty. Operand 22758 states and 29910 transitions. [2020-10-29 07:17:07,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2020-10-29 07:17:07,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:07,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:17:07,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:17:07,145 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:07,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:07,146 INFO L82 PathProgramCache]: Analyzing trace with hash 462964159, now seen corresponding path program 1 times [2020-10-29 07:17:07,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:07,147 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [410979581] [2020-10-29 07:17:07,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:07,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:07,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:07,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:08,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:08,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:08,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-29 07:17:08,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:17:08,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1324 [2020-10-29 07:17:08,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:08,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:08,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:08,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 110 [2020-10-29 07:17:08,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 07:17:08,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:08,720 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:17:08,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:17:08,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:08,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:08,737 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:08,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:17:08,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:08,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 07:17:08,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:08,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:08,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:17:08,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:08,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:17:08,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:08,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:17:08,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:08,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:08,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:08,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 07:17:08,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:08,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:17:08,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:08,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:17:08,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:17:08,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:17:08,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:08,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-29 07:17:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:09,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:09,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:17:09,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:17:09,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:17:09,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-29 07:17:09,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:17:09,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:17:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:17:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:17:09,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:17:09,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:17:09,397 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:17:09,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [410979581] [2020-10-29 07:17:09,398 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:17:09,398 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:17:09,398 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442371956] [2020-10-29 07:17:09,399 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:17:09,399 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:17:09,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:17:09,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:17:09,401 INFO L87 Difference]: Start difference. First operand 22758 states and 29910 transitions. Second operand 8 states. [2020-10-29 07:17:51,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:17:51,412 INFO L93 Difference]: Finished difference Result 60220 states and 84798 transitions. [2020-10-29 07:17:51,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:17:51,418 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 210 [2020-10-29 07:17:51,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:17:51,636 INFO L225 Difference]: With dead ends: 60220 [2020-10-29 07:17:51,636 INFO L226 Difference]: Without dead ends: 38271 [2020-10-29 07:17:51,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:17:51,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38271 states. [2020-10-29 07:17:52,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38271 to 37338. [2020-10-29 07:17:52,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37338 states. [2020-10-29 07:17:53,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37338 states to 37338 states and 50341 transitions. [2020-10-29 07:17:53,006 INFO L78 Accepts]: Start accepts. Automaton has 37338 states and 50341 transitions. Word has length 210 [2020-10-29 07:17:53,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:17:53,007 INFO L481 AbstractCegarLoop]: Abstraction has 37338 states and 50341 transitions. [2020-10-29 07:17:53,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:17:53,008 INFO L276 IsEmpty]: Start isEmpty. Operand 37338 states and 50341 transitions. [2020-10-29 07:17:53,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-10-29 07:17:53,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:17:53,013 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:17:53,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:17:53,014 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:17:53,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:17:53,015 INFO L82 PathProgramCache]: Analyzing trace with hash -24356321, now seen corresponding path program 1 times [2020-10-29 07:17:53,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:17:53,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1446777833] [2020-10-29 07:17:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:17:53,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:17:53,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:53,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:17:53,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking...