/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:10:28,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:10:28,829 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:10:28,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:10:28,873 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:10:28,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:10:28,877 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:10:28,880 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:10:28,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:10:28,883 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:10:28,885 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:10:28,887 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:10:28,887 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:10:28,889 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:10:28,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:10:28,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:10:28,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:10:28,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:10:28,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:10:28,899 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:10:28,901 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:10:28,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:10:28,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:10:28,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:10:28,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:10:28,937 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:10:28,938 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:10:28,939 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:10:28,940 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:10:28,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:10:28,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:10:28,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:10:28,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:10:28,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:10:28,954 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:10:28,955 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:10:28,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:10:28,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:10:28,957 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:10:28,958 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:10:28,959 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:10:28,962 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 07:10:29,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:10:29,022 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:10:29,024 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:10:29,024 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:10:29,025 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:10:29,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:10:29,026 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:10:29,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:10:29,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:10:29,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:10:29,028 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:10:29,029 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:10:29,029 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:10:29,030 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:10:29,030 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:10:29,030 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:10:29,030 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:10:29,031 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:10:29,031 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:10:29,031 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:10:29,031 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:10:29,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:10:29,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:10:29,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:10:29,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:10:29,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:10:29,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:10:29,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:10:29,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:10:29,034 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:10:29,524 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:10:29,560 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:10:29,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:10:29,565 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:10:29,566 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:10:29,567 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-29 07:10:29,660 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1be3b209/9714e3556fac4d94841b5ae66a8f7f15/FLAGda324ef68 [2020-10-29 07:10:30,923 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:10:30,924 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label08.c [2020-10-29 07:10:30,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1be3b209/9714e3556fac4d94841b5ae66a8f7f15/FLAGda324ef68 [2020-10-29 07:10:31,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1be3b209/9714e3556fac4d94841b5ae66a8f7f15 [2020-10-29 07:10:31,260 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:10:31,268 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:10:31,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:10:31,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:10:31,275 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:10:31,276 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:10:31" (1/1) ... [2020-10-29 07:10:31,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34aac700 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:31, skipping insertion in model container [2020-10-29 07:10:31,282 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:10:31" (1/1) ... [2020-10-29 07:10:31,292 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:10:31,467 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:10:33,450 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:10:33,472 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:10:34,471 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:10:34,510 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:10:34,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34 WrapperNode [2020-10-29 07:10:34,511 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:10:34,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:10:34,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:10:34,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:10:34,530 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:34,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:34,617 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:34,618 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:34,856 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:34,905 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:34,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (1/1) ... [2020-10-29 07:10:35,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:10:35,134 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:10:35,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:10:35,134 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:10:35,136 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (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 07:10:35,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:10:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:10:35,248 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:10:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:10:35,249 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:10:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:10:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:10:35,250 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:10:35,250 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:10:35,251 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:10:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:10:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:10:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:10:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:10:35,252 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:10:35,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:10:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:10:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:10:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:10:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:10:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:10:35,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:10:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:10:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:10:35,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:10:46,526 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:10:46,527 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:10:46,532 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:10:46 BoogieIcfgContainer [2020-10-29 07:10:46,532 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:10:46,535 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:10:46,535 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:10:46,540 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:10:46,541 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:10:31" (1/3) ... [2020-10-29 07:10:46,542 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72efd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:10:46, skipping insertion in model container [2020-10-29 07:10:46,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:10:34" (2/3) ... [2020-10-29 07:10:46,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72efd72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:10:46, skipping insertion in model container [2020-10-29 07:10:46,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:10:46" (3/3) ... [2020-10-29 07:10:46,545 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label08.c [2020-10-29 07:10:46,561 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:10:46,570 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:10:46,587 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:10:46,630 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:10:46,630 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:10:46,630 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:10:46,630 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:10:46,630 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:10:46,630 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:10:46,631 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:10:46,631 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:10:46,678 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-29 07:10:46,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 07:10:46,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:10:46,690 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:10:46,691 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:10:46,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:10:46,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1642604858, now seen corresponding path program 1 times [2020-10-29 07:10:46,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:10:46,713 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1053069927] [2020-10-29 07:10:46,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:10:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:47,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:47,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:47,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 07:10:47,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:47,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 720 [2020-10-29 07:10:47,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:47,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:10:47,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:10:47,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 07:10:47,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:10:47,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:10:48,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:10:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:10:48,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:10:48,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:10:48,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:10:48,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:10:48,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:10:48,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:10:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:10:48,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:10:48,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:10:48,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:10:48,087 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 07:10:48,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1053069927] [2020-10-29 07:10:48,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:10:48,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 07:10:48,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670285387] [2020-10-29 07:10:48,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:10:48,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:10:48,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:10:48,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:10:48,121 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 5 states. [2020-10-29 07:11:10,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:10,647 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-29 07:11:10,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:11:10,649 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 57 [2020-10-29 07:11:10,650 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:10,699 INFO L225 Difference]: With dead ends: 3235 [2020-10-29 07:11:10,699 INFO L226 Difference]: Without dead ends: 2027 [2020-10-29 07:11:10,714 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:11:10,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-29 07:11:10,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-29 07:11:10,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-29 07:11:10,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-29 07:11:10,913 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 57 [2020-10-29 07:11:10,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:10,914 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-29 07:11:10,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:11:10,915 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-29 07:11:10,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 07:11:10,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:10,922 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:11:10,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:11:10,923 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:10,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:10,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1153454431, now seen corresponding path program 1 times [2020-10-29 07:11:10,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:10,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688728102] [2020-10-29 07:11:10,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:11,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:12,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:13,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:13,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 07:11:13,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:11:13,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2982 [2020-10-29 07:11:13,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:14,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:14,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:11:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:11:14,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 07:11:14,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-29 07:11:14,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:14,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:14,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:14,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:14,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:14,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:11:14,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:14,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:14,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:11:14,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-29 07:11:14,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:14,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:14,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:14,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:14,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:11:14,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:14,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-10-29 07:11:14,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:14,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:14,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:11:14,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:14,750 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:11:14,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688728102] [2020-10-29 07:11:14,750 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:11:14,751 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:11:14,751 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795622395] [2020-10-29 07:11:14,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:11:14,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:14,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:11:14,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:11:14,756 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-29 07:11:43,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:11:43,221 INFO L93 Difference]: Finished difference Result 5865 states and 9703 transitions. [2020-10-29 07:11:43,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:11:43,222 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 132 [2020-10-29 07:11:43,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:11:43,251 INFO L225 Difference]: With dead ends: 5865 [2020-10-29 07:11:43,251 INFO L226 Difference]: Without dead ends: 3861 [2020-10-29 07:11:43,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:11:43,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3861 states. [2020-10-29 07:11:43,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3861 to 3762. [2020-10-29 07:11:43,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2020-10-29 07:11:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5633 transitions. [2020-10-29 07:11:43,394 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5633 transitions. Word has length 132 [2020-10-29 07:11:43,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:11:43,395 INFO L481 AbstractCegarLoop]: Abstraction has 3762 states and 5633 transitions. [2020-10-29 07:11:43,395 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:11:43,395 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5633 transitions. [2020-10-29 07:11:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-29 07:11:43,398 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:11:43,399 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:11:43,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:11:43,399 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:11:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:11:43,400 INFO L82 PathProgramCache]: Analyzing trace with hash 325523997, now seen corresponding path program 1 times [2020-10-29 07:11:43,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:11:43,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259954249] [2020-10-29 07:11:43,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:11:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:43,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:43,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:44,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:44,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-29 07:11:44,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:11:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1243 [2020-10-29 07:11:44,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:44,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:11:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:11:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:11:44,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:44,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:11:44,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:44,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:44,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:44,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:11:44,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:44,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:11:44,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:44,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:11:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:11:44,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:11:44,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:44,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:11:44,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:11:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:11:45,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:11:45,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:11:45,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:11:45,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-29 07:11:45,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:11:45,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:11:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:11:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:11:45,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:11:45,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:11:45,307 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:11:45,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259954249] [2020-10-29 07:11:45,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:11:45,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:11:45,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823741672] [2020-10-29 07:11:45,312 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:11:45,312 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:11:45,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:11:45,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:11:45,315 INFO L87 Difference]: Start difference. First operand 3762 states and 5633 transitions. Second operand 7 states. [2020-10-29 07:12:09,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:09,378 INFO L93 Difference]: Finished difference Result 9304 states and 13730 transitions. [2020-10-29 07:12:09,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:12:09,386 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 146 [2020-10-29 07:12:09,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:09,416 INFO L225 Difference]: With dead ends: 9304 [2020-10-29 07:12:09,416 INFO L226 Difference]: Without dead ends: 5548 [2020-10-29 07:12:09,427 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:12:09,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5548 states. [2020-10-29 07:12:09,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5548 to 5473. [2020-10-29 07:12:09,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5473 states. [2020-10-29 07:12:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5473 states to 5473 states and 7696 transitions. [2020-10-29 07:12:09,586 INFO L78 Accepts]: Start accepts. Automaton has 5473 states and 7696 transitions. Word has length 146 [2020-10-29 07:12:09,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:09,586 INFO L481 AbstractCegarLoop]: Abstraction has 5473 states and 7696 transitions. [2020-10-29 07:12:09,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:12:09,587 INFO L276 IsEmpty]: Start isEmpty. Operand 5473 states and 7696 transitions. [2020-10-29 07:12:09,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 07:12:09,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:09,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:12:09,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:12:09,591 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:09,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:09,591 INFO L82 PathProgramCache]: Analyzing trace with hash 356618045, now seen corresponding path program 1 times [2020-10-29 07:12:09,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:09,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1745146933] [2020-10-29 07:12:09,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:09,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:09,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:10,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:10,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:12:10,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:12:10,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1362 [2020-10-29 07:12:10,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:10,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:12:10,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:12:10,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:12:10,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:11,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:11,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:11,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:11,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:11,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:11,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:12:11,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:11,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:11,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:11,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:12:11,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:11,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:12:11,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:11,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:11,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:11,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-10-29 07:12:11,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:11,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-29 07:12:11,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:11,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:11,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:12:11,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-29 07:12:11,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:11,515 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:12:11,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1745146933] [2020-10-29 07:12:11,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:12:11,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:12:11,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230456135] [2020-10-29 07:12:11,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:12:11,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:11,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:12:11,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:12:11,518 INFO L87 Difference]: Start difference. First operand 5473 states and 7696 transitions. Second operand 7 states. [2020-10-29 07:12:38,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:12:38,583 INFO L93 Difference]: Finished difference Result 16413 states and 23843 transitions. [2020-10-29 07:12:38,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:12:38,585 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-29 07:12:38,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:12:38,644 INFO L225 Difference]: With dead ends: 16413 [2020-10-29 07:12:38,645 INFO L226 Difference]: Without dead ends: 10946 [2020-10-29 07:12:38,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:12:38,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10946 states. [2020-10-29 07:12:38,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10946 to 10730. [2020-10-29 07:12:38,995 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10730 states. [2020-10-29 07:12:39,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10730 states to 10730 states and 13946 transitions. [2020-10-29 07:12:39,032 INFO L78 Accepts]: Start accepts. Automaton has 10730 states and 13946 transitions. Word has length 162 [2020-10-29 07:12:39,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:12:39,034 INFO L481 AbstractCegarLoop]: Abstraction has 10730 states and 13946 transitions. [2020-10-29 07:12:39,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:12:39,035 INFO L276 IsEmpty]: Start isEmpty. Operand 10730 states and 13946 transitions. [2020-10-29 07:12:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-10-29 07:12:39,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:12:39,047 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 07:12:39,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:12:39,048 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:12:39,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:12:39,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1166360278, now seen corresponding path program 1 times [2020-10-29 07:12:39,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:12:39,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794028594] [2020-10-29 07:12:39,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:12:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:39,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:39,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:44,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:44,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 271 [2020-10-29 07:12:44,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:12:44,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-29 07:12:44,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:44,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-29 07:12:44,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-29 07:12:44,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:12:44,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:12:44,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:44,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:44,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:44,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:12:44,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:44,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:12:44,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:44,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:12:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:44,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:12:44,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:44,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:12:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:44,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:44,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:44,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:12:44,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:44,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:12:44,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:44,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:44,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:12:44,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:12:44,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:12:44,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:44,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-29 07:12:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:12:44,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:12:44,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:12:44,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 07:12:44,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:12:44,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-29 07:12:44,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:12:44,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:12:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:12:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:12:44,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-29 07:12:44,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:12:44,997 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 188 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:12:44,997 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794028594] [2020-10-29 07:12:44,998 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:12:44,998 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:12:44,998 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011718479] [2020-10-29 07:12:44,999 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:12:44,999 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:12:44,999 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:12:45,000 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:12:45,000 INFO L87 Difference]: Start difference. First operand 10730 states and 13946 transitions. Second operand 7 states. [2020-10-29 07:13:17,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:17,992 INFO L93 Difference]: Finished difference Result 29624 states and 40499 transitions. [2020-10-29 07:13:17,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:13:17,995 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 257 [2020-10-29 07:13:17,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:18,082 INFO L225 Difference]: With dead ends: 29624 [2020-10-29 07:13:18,082 INFO L226 Difference]: Without dead ends: 19703 [2020-10-29 07:13:18,113 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:13:18,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19703 states. [2020-10-29 07:13:18,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19703 to 19515. [2020-10-29 07:13:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19515 states. [2020-10-29 07:13:18,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19515 states to 19515 states and 26724 transitions. [2020-10-29 07:13:18,699 INFO L78 Accepts]: Start accepts. Automaton has 19515 states and 26724 transitions. Word has length 257 [2020-10-29 07:13:18,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:18,699 INFO L481 AbstractCegarLoop]: Abstraction has 19515 states and 26724 transitions. [2020-10-29 07:13:18,699 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:13:18,700 INFO L276 IsEmpty]: Start isEmpty. Operand 19515 states and 26724 transitions. [2020-10-29 07:13:18,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 263 [2020-10-29 07:13:18,705 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:18,706 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:13:18,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:13:18,706 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:18,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:18,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1183041286, now seen corresponding path program 1 times [2020-10-29 07:13:18,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:18,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1698266121] [2020-10-29 07:13:18,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:18,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:19,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:20,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:22,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:22,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-29 07:13:22,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:13:22,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3255 [2020-10-29 07:13:22,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:22,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:13:22,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:13:22,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-29 07:13:22,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:22,288 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:13:22,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:13:22,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:22,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:22,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:13:22,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:22,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:13:22,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:22,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:22,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:22,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:13:22,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:22,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:13:22,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:22,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:22,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:22,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:13:22,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:13:22,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-29 07:13:22,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:22,837 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:13:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:13:22,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:13:22,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:22,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:13:22,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:23,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:13:23,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:13:23,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:13:23,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 07:13:23,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:13:23,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:13:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:13:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:13:23,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:13:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:13:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 168 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:13:23,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1698266121] [2020-10-29 07:13:23,294 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:13:23,294 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:13:23,294 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924195356] [2020-10-29 07:13:23,295 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:13:23,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:13:23,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:13:23,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:13:23,304 INFO L87 Difference]: Start difference. First operand 19515 states and 26724 transitions. Second operand 7 states. [2020-10-29 07:13:23,478 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:13:56,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:13:56,788 INFO L93 Difference]: Finished difference Result 55577 states and 81634 transitions. [2020-10-29 07:13:56,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:13:56,796 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 262 [2020-10-29 07:13:56,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:13:56,997 INFO L225 Difference]: With dead ends: 55577 [2020-10-29 07:13:56,998 INFO L226 Difference]: Without dead ends: 36871 [2020-10-29 07:13:57,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:13:57,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36871 states. [2020-10-29 07:13:58,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36871 to 36630. [2020-10-29 07:13:58,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36630 states. [2020-10-29 07:13:58,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36630 states to 36630 states and 48138 transitions. [2020-10-29 07:13:58,234 INFO L78 Accepts]: Start accepts. Automaton has 36630 states and 48138 transitions. Word has length 262 [2020-10-29 07:13:58,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:13:58,235 INFO L481 AbstractCegarLoop]: Abstraction has 36630 states and 48138 transitions. [2020-10-29 07:13:58,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:13:58,235 INFO L276 IsEmpty]: Start isEmpty. Operand 36630 states and 48138 transitions. [2020-10-29 07:13:58,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-10-29 07:13:58,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:13:58,242 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:13:58,242 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:13:58,242 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:13:58,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:13:58,243 INFO L82 PathProgramCache]: Analyzing trace with hash 9684843, now seen corresponding path program 1 times [2020-10-29 07:13:58,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:13:58,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [93571961] [2020-10-29 07:13:58,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:13:58,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:13:58,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:58,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:13:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:00,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:01,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:01,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 293 [2020-10-29 07:14:01,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:14:01,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3408 [2020-10-29 07:14:01,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:01,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 07:14:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:14:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 284 [2020-10-29 07:14:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:14:02,144 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:14:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:14:02,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:02,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:02,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:02,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:14:02,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:14:02,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:14:02,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:02,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:02,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:14:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:14:02,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:14:02,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:02,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:02,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:02,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-29 07:14:02,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-10-29 07:14:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:02,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:02,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-29 07:14:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-29 07:14:02,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:14:02,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:02,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:14:03,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:14:03,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 07:14:03,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:14:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 416 [2020-10-29 07:14:03,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:14:03,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:14:03,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:14:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:14:03,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 07:14:03,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:14:03,519 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 90 proven. 11 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2020-10-29 07:14:03,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [93571961] [2020-10-29 07:14:03,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:14:03,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:14:03,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696007628] [2020-10-29 07:14:03,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:14:03,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:14:03,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:14:03,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:14:03,522 INFO L87 Difference]: Start difference. First operand 36630 states and 48138 transitions. Second operand 7 states. [2020-10-29 07:14:03,734 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-10-29 07:14:04,963 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-29 07:14:06,547 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-29 07:14:08,072 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 76