/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/Problem12_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:00:45,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:00:45,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:00:45,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:00:45,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:00:45,254 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:00:45,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:00:45,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:00:45,262 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:00:45,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:00:45,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:00:45,268 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:00:45,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:00:45,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:00:45,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:00:45,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:00:45,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:00:45,281 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:00:45,283 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:00:45,286 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:00:45,288 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:00:45,290 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:00:45,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:00:45,295 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:00:45,299 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:00:45,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:00:45,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:00:45,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:00:45,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:00:45,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:00:45,304 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:00:45,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:00:45,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:00:45,309 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:00:45,310 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:00:45,311 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:00:45,312 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:00:45,313 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:00:45,313 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:00:45,315 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:00:45,316 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:00:45,319 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 07:00:45,350 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:00:45,350 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:00:45,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:00:45,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:00:45,353 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:00:45,353 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:00:45,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:00:45,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:00:45,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:00:45,354 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:00:45,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:00:45,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:00:45,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:00:45,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:00:45,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:00:45,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:00:45,355 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:00:45,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:00:45,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:00:45,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:00:45,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:00:45,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:00:45,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:00:45,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:00:45,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:00:45,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:00:45,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:00:45,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:00:45,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:00:45,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:00:45,870 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:00:45,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:00:45,923 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:00:45,925 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:00:45,927 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:00:45,929 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-29 07:00:46,043 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e0e3457/133063122e6b436f81225e8aae15e7c9/FLAG79873516b [2020-10-29 07:00:47,295 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:00:47,296 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label29.c [2020-10-29 07:00:47,348 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e0e3457/133063122e6b436f81225e8aae15e7c9/FLAG79873516b [2020-10-29 07:00:47,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48e0e3457/133063122e6b436f81225e8aae15e7c9 [2020-10-29 07:00:47,722 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:00:47,730 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:00:47,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:00:47,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:00:47,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:00:47,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:00:47" (1/1) ... [2020-10-29 07:00:47,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b8afaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:47, skipping insertion in model container [2020-10-29 07:00:47,745 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:00:47" (1/1) ... [2020-10-29 07:00:47,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:00:47,916 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:00:49,475 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:00:49,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:00:50,227 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:00:50,269 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:00:50,270 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50 WrapperNode [2020-10-29 07:00:50,270 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:00:50,272 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:00:50,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:00:50,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:00:50,292 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,295 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,384 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,601 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,684 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (1/1) ... [2020-10-29 07:00:50,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:00:50,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:00:50,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:00:50,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:00:50,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (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 07:00:50,922 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:00:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:00:50,923 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:00:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:00:50,924 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:00:50,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:00:50,925 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:00:50,925 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:00:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:00:50,925 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:00:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:00:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:00:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:00:50,927 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:00:50,928 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:00:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:00:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:00:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:00:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:00:50,929 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:00:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:00:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:00:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:00:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:00:50,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:00:57,662 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:00:57,664 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:00:57,671 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:00:57 BoogieIcfgContainer [2020-10-29 07:00:57,671 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:00:57,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:00:57,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:00:57,687 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:00:57,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:00:47" (1/3) ... [2020-10-29 07:00:57,690 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292fbb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:00:57, skipping insertion in model container [2020-10-29 07:00:57,690 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:00:50" (2/3) ... [2020-10-29 07:00:57,691 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@292fbb77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:00:57, skipping insertion in model container [2020-10-29 07:00:57,691 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:00:57" (3/3) ... [2020-10-29 07:00:57,694 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label29.c [2020-10-29 07:00:57,719 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:00:57,728 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:00:57,748 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:00:57,804 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:00:57,805 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:00:57,805 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:00:57,805 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:00:57,805 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:00:57,805 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:00:57,805 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:00:57,806 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:00:57,870 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:00:57,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 07:00:57,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:57,882 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:00:57,882 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:57,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:57,892 INFO L82 PathProgramCache]: Analyzing trace with hash -100747180, now seen corresponding path program 1 times [2020-10-29 07:00:57,904 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:57,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058276586] [2020-10-29 07:00:57,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:58,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:59,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:59,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 07:00:59,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-29 07:00:59,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:59,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:59,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:59,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 07:00:59,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:00:59,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:59,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:59,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:59,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:59,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-29 07:00:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:59,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:59,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:59,625 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 07:00:59,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058276586] [2020-10-29 07:00:59,629 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:00:59,629 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:00:59,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192302534] [2020-10-29 07:00:59,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:00:59,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:59,667 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:00:59,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:00:59,672 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:01:11,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:11,497 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 07:01:11,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:01:11,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-29 07:01:11,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:11,544 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 07:01:11,544 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:01:11,563 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:01:11,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:01:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 07:01:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 07:01:11,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 07:01:11,760 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 62 [2020-10-29 07:01:11,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:11,764 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 07:01:11,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:01:11,764 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 07:01:11,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-29 07:01:11,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:11,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:01:11,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:01:11,784 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:11,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:11,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1458832066, now seen corresponding path program 1 times [2020-10-29 07:01:11,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:11,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120734780] [2020-10-29 07:01:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:12,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:13,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-29 07:01:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-10-29 07:01:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:13,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:01:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 07:01:13,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:13,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:13,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:13,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:13,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:13,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:13,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:13,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:13,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:13,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:13,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:01:13,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:13,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-29 07:01:13,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:13,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:13,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:13,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 07:01:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:13,696 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 50 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:01:13,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120734780] [2020-10-29 07:01:13,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:13,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:01:13,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539391473] [2020-10-29 07:01:13,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:01:13,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:13,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:01:13,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:01:13,701 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 6 states. [2020-10-29 07:01:25,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:25,827 INFO L93 Difference]: Finished difference Result 4670 states and 8258 transitions. [2020-10-29 07:01:25,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:01:25,831 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-29 07:01:25,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:25,857 INFO L225 Difference]: With dead ends: 4670 [2020-10-29 07:01:25,857 INFO L226 Difference]: Without dead ends: 3122 [2020-10-29 07:01:25,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-29 07:01:25,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3107. [2020-10-29 07:01:25,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-29 07:01:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5318 transitions. [2020-10-29 07:01:25,978 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5318 transitions. Word has length 131 [2020-10-29 07:01:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:25,979 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5318 transitions. [2020-10-29 07:01:25,979 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:01:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5318 transitions. [2020-10-29 07:01:25,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-29 07:01:25,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:25,983 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:01:25,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:01:25,984 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:25,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:25,984 INFO L82 PathProgramCache]: Analyzing trace with hash 1563430258, now seen corresponding path program 1 times [2020-10-29 07:01:25,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:25,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1625772422] [2020-10-29 07:01:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:26,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:26,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:26,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:26,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:27,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:27,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:01:27,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:27,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1892 [2020-10-29 07:01:27,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:27,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:01:27,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:01:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:28,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:28,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:28,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:01:28,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:28,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:28,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:28,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:28,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:28,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:28,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:28,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:01:28,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:28,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:01:28,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:28,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:28,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:01:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:28,389 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:01:28,391 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1625772422] [2020-10-29 07:01:28,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:28,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:01:28,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834207322] [2020-10-29 07:01:28,394 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:01:28,394 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:28,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:01:28,395 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:01:28,395 INFO L87 Difference]: Start difference. First operand 3107 states and 5318 transitions. Second operand 6 states. [2020-10-29 07:01:42,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:42,258 INFO L93 Difference]: Finished difference Result 9421 states and 16417 transitions. [2020-10-29 07:01:42,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:01:42,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 137 [2020-10-29 07:01:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:42,302 INFO L225 Difference]: With dead ends: 9421 [2020-10-29 07:01:42,302 INFO L226 Difference]: Without dead ends: 6320 [2020-10-29 07:01:42,312 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 [2020-10-29 07:01:42,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6320 states. [2020-10-29 07:01:42,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6320 to 6281. [2020-10-29 07:01:42,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6281 states. [2020-10-29 07:01:42,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6281 states to 6281 states and 9414 transitions. [2020-10-29 07:01:42,525 INFO L78 Accepts]: Start accepts. Automaton has 6281 states and 9414 transitions. Word has length 137 [2020-10-29 07:01:42,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:42,528 INFO L481 AbstractCegarLoop]: Abstraction has 6281 states and 9414 transitions. [2020-10-29 07:01:42,528 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:01:42,528 INFO L276 IsEmpty]: Start isEmpty. Operand 6281 states and 9414 transitions. [2020-10-29 07:01:42,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-10-29 07:01:42,532 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:42,532 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:01:42,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:01:42,532 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:42,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:42,540 INFO L82 PathProgramCache]: Analyzing trace with hash 45044510, now seen corresponding path program 1 times [2020-10-29 07:01:42,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:42,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [603144898] [2020-10-29 07:01:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:42,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:42,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:43,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-29 07:01:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:01:43,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-10-29 07:01:43,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:43,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:01:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:01:43,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-29 07:01:43,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:43,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:43,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:43,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:43,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:43,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:43,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:43,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:01:43,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:43,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:43,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:01:43,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:43,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:43,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:43,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:43,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-29 07:01:43,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:43,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-29 07:01:43,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:43,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:43,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:01:43,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:01:44,036 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:01:44,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [603144898] [2020-10-29 07:01:44,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:01:44,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:01:44,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948376544] [2020-10-29 07:01:44,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:44,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:44,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:44,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:44,040 INFO L87 Difference]: Start difference. First operand 6281 states and 9414 transitions. Second operand 7 states. [2020-10-29 07:02:01,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:01,613 INFO L93 Difference]: Finished difference Result 18445 states and 28849 transitions. [2020-10-29 07:02:01,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:02:01,615 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 147 [2020-10-29 07:02:01,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:01,708 INFO L225 Difference]: With dead ends: 18445 [2020-10-29 07:02:01,708 INFO L226 Difference]: Without dead ends: 12170 [2020-10-29 07:02:01,735 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:02:01,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12170 states. [2020-10-29 07:02:02,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12170 to 11227. [2020-10-29 07:02:02,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11227 states. [2020-10-29 07:02:02,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11227 states to 11227 states and 16418 transitions. [2020-10-29 07:02:02,269 INFO L78 Accepts]: Start accepts. Automaton has 11227 states and 16418 transitions. Word has length 147 [2020-10-29 07:02:02,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:02,270 INFO L481 AbstractCegarLoop]: Abstraction has 11227 states and 16418 transitions. [2020-10-29 07:02:02,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:02,270 INFO L276 IsEmpty]: Start isEmpty. Operand 11227 states and 16418 transitions. [2020-10-29 07:02:02,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-29 07:02:02,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:02,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:02:02,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:02:02,274 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:02,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:02,275 INFO L82 PathProgramCache]: Analyzing trace with hash -295976188, now seen corresponding path program 1 times [2020-10-29 07:02:02,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:02,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1207843861] [2020-10-29 07:02:02,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:02,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:02,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:02,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:03,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-29 07:02:03,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:03,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-10-29 07:02:03,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:03,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:03,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:03,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:02:03,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:02:03,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:03,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:03,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:02:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:03,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:02:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:03,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:03,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:03,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:03,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:03,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:02:03,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:03,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-29 07:02:03,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:03,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:03,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:02:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 07:02:04,139 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:02:04,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1207843861] [2020-10-29 07:02:04,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:02:04,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:02:04,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745988661] [2020-10-29 07:02:04,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:02:04,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:04,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:02:04,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:04,142 INFO L87 Difference]: Start difference. First operand 11227 states and 16418 transitions. Second operand 8 states. [2020-10-29 07:02:29,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:29,043 INFO L93 Difference]: Finished difference Result 35537 states and 53292 transitions. [2020-10-29 07:02:29,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:02:29,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 182 [2020-10-29 07:02:29,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:29,161 INFO L225 Difference]: With dead ends: 35537 [2020-10-29 07:02:29,161 INFO L226 Difference]: Without dead ends: 24316 [2020-10-29 07:02:29,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:02:29,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24316 states. [2020-10-29 07:02:30,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24316 to 22706. [2020-10-29 07:02:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22706 states. [2020-10-29 07:02:30,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22706 states to 22706 states and 29912 transitions. [2020-10-29 07:02:30,156 INFO L78 Accepts]: Start accepts. Automaton has 22706 states and 29912 transitions. Word has length 182 [2020-10-29 07:02:30,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:30,157 INFO L481 AbstractCegarLoop]: Abstraction has 22706 states and 29912 transitions. [2020-10-29 07:02:30,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:02:30,157 INFO L276 IsEmpty]: Start isEmpty. Operand 22706 states and 29912 transitions. [2020-10-29 07:02:30,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-29 07:02:30,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:30,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:02:30,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:02:30,165 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:30,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:30,166 INFO L82 PathProgramCache]: Analyzing trace with hash 853698912, now seen corresponding path program 1 times [2020-10-29 07:02:30,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:30,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862359957] [2020-10-29 07:02:30,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:30,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:30,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:30,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:31,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:33,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:33,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2774 [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:02:33,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:02:33,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-29 07:02:33,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:33,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:33,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:33,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:33,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:33,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:02:33,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:33,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:33,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:33,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:33,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:33,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:02:33,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:33,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-29 07:02:33,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:33,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:33,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:02:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:02:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:02:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:33,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:33,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:33,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:33,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:02:33,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:02:33,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 07:02:33,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:33,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:33,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:33,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:33,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:02:33,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:34,026 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 108 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-29 07:02:34,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862359957] [2020-10-29 07:02:34,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:34,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:02:34,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682710302] [2020-10-29 07:02:34,031 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:02:34,031 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:34,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:02:34,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:02:34,032 INFO L87 Difference]: Start difference. First operand 22706 states and 29912 transitions. Second operand 6 states. [2020-10-29 07:02:55,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:55,588 INFO L93 Difference]: Finished difference Result 68225 states and 96544 transitions. [2020-10-29 07:02:55,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:02:55,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 282 [2020-10-29 07:02:55,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:55,765 INFO L225 Difference]: With dead ends: 68225 [2020-10-29 07:02:55,765 INFO L226 Difference]: Without dead ends: 45525 [2020-10-29 07:02:55,828 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:02:55,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45525 states. [2020-10-29 07:02:57,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45525 to 43926. [2020-10-29 07:02:57,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43926 states. [2020-10-29 07:02:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43926 states to 43926 states and 58288 transitions. [2020-10-29 07:02:57,417 INFO L78 Accepts]: Start accepts. Automaton has 43926 states and 58288 transitions. Word has length 282 [2020-10-29 07:02:57,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:57,418 INFO L481 AbstractCegarLoop]: Abstraction has 43926 states and 58288 transitions. [2020-10-29 07:02:57,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:02:57,419 INFO L276 IsEmpty]: Start isEmpty. Operand 43926 states and 58288 transitions. [2020-10-29 07:02:57,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-29 07:02:57,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:57,440 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:57,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:02:57,440 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:57,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash -120284274, now seen corresponding path program 1 times [2020-10-29 07:02:57,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:57,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639941235] [2020-10-29 07:02:57,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:57,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:57,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:57,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:59,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:02,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:02,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 321 [2020-10-29 07:03:02,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:03:02,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4570 [2020-10-29 07:03:02,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:02,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:03:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:03:02,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:03:02,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:02,359 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:03:02,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:02,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:02,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:02,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:02,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:02,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:03:02,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:02,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:02,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:03:02,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:02,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:02,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:02,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:02,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:02,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:03:02,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:02,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 07:03:02,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:02,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:02,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:03:02,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:03,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:03:03,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:03,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:03,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 07:03:03,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-29 07:03:03,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:03,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:03,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 07:03:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:03,594 INFO L134 CoverageAnalysis]: Checked inductivity of 205 backedges. 108 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 07:03:03,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639941235] [2020-10-29 07:03:03,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:03,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:03:03,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911793971] [2020-10-29 07:03:03,598 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:03:03,598 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:03,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:03:03,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:03:03,601 INFO L87 Difference]: Start difference. First operand 43926 states and 58288 transitions. Second operand 7 states. [2020-10-29 07:03:03,757 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:03:20,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:20,644 INFO L93 Difference]: Finished difference Result 89644 states and 120262 transitions. [2020-10-29 07:03:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:03:20,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-29 07:03:20,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:20,809 INFO L225 Difference]: With dead ends: 89644 [2020-10-29 07:03:20,809 INFO L226 Difference]: Without dead ends: 45724 [2020-10-29 07:03:20,869 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:03:20,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45724 states. [2020-10-29 07:03:22,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45724 to 45344. [2020-10-29 07:03:22,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45344 states. [2020-10-29 07:03:22,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45344 states to 45344 states and 60803 transitions. [2020-10-29 07:03:22,160 INFO L78 Accepts]: Start accepts. Automaton has 45344 states and 60803 transitions. Word has length 307 [2020-10-29 07:03:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:03:22,161 INFO L481 AbstractCegarLoop]: Abstraction has 45344 states and 60803 transitions. [2020-10-29 07:03:22,161 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:03:22,161 INFO L276 IsEmpty]: Start isEmpty. Operand 45344 states and 60803 transitions. [2020-10-29 07:03:22,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 383 [2020-10-29 07:03:22,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:03:22,176 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:03:22,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:03:22,176 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:03:22,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:03:22,177 INFO L82 PathProgramCache]: Analyzing trace with hash -185791184, now seen corresponding path program 1 times [2020-10-29 07:03:22,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:03:22,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56423312] [2020-10-29 07:03:22,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:03:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:22,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:23,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:24,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:27,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:27,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 398 [2020-10-29 07:03:27,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:03:27,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4783 [2020-10-29 07:03:27,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:27,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 07:03:27,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-29 07:03:27,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:27,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:03:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:27,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:03:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:03:27,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:27,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:27,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:27,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:03:27,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:27,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:27,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:27,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:03:27,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:27,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-29 07:03:27,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:27,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:03:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:03:27,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:03:27,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:27,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:03:27,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:27,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:28,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:28,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:03:28,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:28,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-29 07:03:28,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:28,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:28,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:03:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:03:28,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:03:28,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:03:28,555 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 22 [2020-10-29 07:03:28,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-29 07:03:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:03:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:03:28,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:03:28,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 07:03:28,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:03:28,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:03:28,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:03:28,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:03:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:03:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-29 07:03:28,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:03:28,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:03:29,467 INFO L134 CoverageAnalysis]: Checked inductivity of 409 backedges. 238 proven. 96 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-29 07:03:29,468 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56423312] [2020-10-29 07:03:29,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:03:29,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:03:29,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137997364] [2020-10-29 07:03:29,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:03:29,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:03:29,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:03:29,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:03:29,471 INFO L87 Difference]: Start difference. First operand 45344 states and 60803 transitions. Second operand 8 states. [2020-10-29 07:03:30,288 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:03:36,747 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-29 07:03:36,904 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-29 07:03:59,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:03:59,156 INFO L93 Difference]: Finished difference Result 109869 states and 150667 transitions. [2020-10-29 07:03:59,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:03:59,159 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 382 [2020-10-29 07:03:59,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:03:59,395 INFO L225 Difference]: With dead ends: 109869 [2020-10-29 07:03:59,396 INFO L226 Difference]: Without dead ends: 61117 [2020-10-29 07:03:59,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=58, Invalid=124, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:03:59,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61117 states. [2020-10-29 07:04:01,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61117 to 60090. [2020-10-29 07:04:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60090 states. [2020-10-29 07:04:01,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60090 states to 60090 states and 75294 transitions. [2020-10-29 07:04:01,243 INFO L78 Accepts]: Start accepts. Automaton has 60090 states and 75294 transitions. Word has length 382 [2020-10-29 07:04:01,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:04:01,243 INFO L481 AbstractCegarLoop]: Abstraction has 60090 states and 75294 transitions. [2020-10-29 07:04:01,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:04:01,244 INFO L276 IsEmpty]: Start isEmpty. Operand 60090 states and 75294 transitions. [2020-10-29 07:04:01,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-29 07:04:01,265 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:04:01,266 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 07:04:01,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:04:01,266 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:04:01,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:04:01,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1544068598, now seen corresponding path program 1 times [2020-10-29 07:04:01,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:04:01,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [653768769] [2020-10-29 07:04:01,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:04:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:01,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:02,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:05,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:05,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:05,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-29 07:04:05,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:04:05,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3780 [2020-10-29 07:04:05,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:05,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:04:05,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 282 [2020-10-29 07:04:05,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:04:05,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:05,425 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:04:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:04:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:05,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:05,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:05,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:04:05,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:05,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:04:05,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:05,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:04:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:05,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:04:05,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:05,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:04:05,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:05,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:05,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:05,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:04:05,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:05,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-29 07:04:05,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:05,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:04:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:05,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:04:05,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:05,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:04:05,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:05,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:05,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-29 07:04:05,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:04:05,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-29 07:04:05,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:05,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:04:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:04:05,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-29 07:04:05,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:05,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-29 07:04:05,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:04:05,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:06,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:04:06,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:04:06,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:04:06,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:04:06,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-10-29 07:04:06,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:04:06,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:04:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:04:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:04:06,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:04:06,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:04:06,525 INFO L134 CoverageAnalysis]: Checked inductivity of 501 backedges. 322 proven. 55 refuted. 0 times theorem prover too weak. 124 trivial. 0 not checked. [2020-10-29 07:04:06,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [653768769] [2020-10-29 07:04:06,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:04:06,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:04:06,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060224266] [2020-10-29 07:04:06,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:04:06,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:04:06,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:04:06,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:04:06,533 INFO L87 Difference]: Start difference. First operand 60090 states and 75294 transitions. Second operand 8 states. [2020-10-29 07:04:06,722 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:04:08,529 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66