/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/Problem04_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:31:21,733 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:31:21,736 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:31:21,771 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:31:21,772 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:31:21,773 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:31:21,775 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:31:21,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:31:21,780 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:31:21,781 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:31:21,782 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:31:21,784 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:31:21,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:31:21,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:31:21,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:31:21,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:31:21,791 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:31:21,792 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:31:21,806 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:31:21,808 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:31:21,811 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:31:21,814 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:31:21,817 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:31:21,819 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:31:21,828 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:31:21,828 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:31:21,829 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:31:21,830 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:31:21,834 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:31:21,836 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:31:21,837 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:31:21,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:31:21,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:31:21,840 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:31:21,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:31:21,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:31:21,844 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:31:21,845 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:31:21,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:31:21,846 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:31:21,847 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:31:21,849 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 [2020-10-28 10:31:21,911 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:31:21,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:31:21,918 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:31:21,919 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:31:21,919 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:31:21,919 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:31:21,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:31:21,920 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:31:21,920 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:31:21,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:31:21,922 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:31:21,922 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:31:21,923 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:31:21,923 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:31:21,923 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:31:21,923 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:31:21,924 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:31:21,924 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:31:21,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:31:21,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:31:21,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:31:21,925 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:31:21,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:31:21,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:31:21,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:31:21,927 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:31:21,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:31:21,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:31:21,927 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:31:21,928 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:31:22,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:31:22,429 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:31:22,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:31:22,434 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:31:22,434 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:31:22,436 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label34.c [2020-10-28 10:31:22,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b174db4/a1f23ab709bc408d9ae45ad87b75cefe/FLAG65338d76a [2020-10-28 10:31:23,561 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:31:23,562 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label34.c [2020-10-28 10:31:23,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b174db4/a1f23ab709bc408d9ae45ad87b75cefe/FLAG65338d76a [2020-10-28 10:31:23,618 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/14b174db4/a1f23ab709bc408d9ae45ad87b75cefe [2020-10-28 10:31:23,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:31:23,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:31:23,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:31:23,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:31:23,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:31:23,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:31:23" (1/1) ... [2020-10-28 10:31:23,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f9a9cc5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:23, skipping insertion in model container [2020-10-28 10:31:23,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:31:23" (1/1) ... [2020-10-28 10:31:23,650 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:31:23,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:31:25,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:31:25,258 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:31:26,053 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:31:26,088 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:31:26,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26 WrapperNode [2020-10-28 10:31:26,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:31:26,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:31:26,091 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:31:26,091 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:31:26,105 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,189 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,362 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (1/1) ... [2020-10-28 10:31:26,391 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:31:26,392 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:31:26,392 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:31:26,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:31:26,393 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (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 [2020-10-28 10:31:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:31:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:31:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:31:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:31:26,473 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:31:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:31:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:31:26,474 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:31:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:31:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:31:26,474 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:31:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:31:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:31:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:31:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:31:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:31:26,475 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:31:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:31:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:31:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:31:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:31:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:31:26,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:31:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:31:26,477 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:31:31,212 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:31:31,213 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:31:31,216 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:31:31 BoogieIcfgContainer [2020-10-28 10:31:31,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:31:31,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:31:31,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:31:31,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:31:31,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:31:23" (1/3) ... [2020-10-28 10:31:31,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afdae37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:31:31, skipping insertion in model container [2020-10-28 10:31:31,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:31:26" (2/3) ... [2020-10-28 10:31:31,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afdae37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:31:31, skipping insertion in model container [2020-10-28 10:31:31,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:31:31" (3/3) ... [2020-10-28 10:31:31,234 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label34.c [2020-10-28 10:31:31,246 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:31:31,252 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:31:31,265 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:31:31,299 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:31:31,299 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:31:31,300 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:31:31,300 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:31:31,300 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:31:31,300 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:31:31,300 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:31:31,300 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:31:31,338 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-28 10:31:31,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 802 [2020-10-28 10:31:31,409 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:31,411 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:31:31,412 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:31,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:31,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1790565456, now seen corresponding path program 1 times [2020-10-28 10:31:31,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:31,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308558665] [2020-10-28 10:31:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:32,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:32,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:37,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:37,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 817 [2020-10-28 10:31:37,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:31:37,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 10:31:37,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:37,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 10:31:37,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:31:37,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 808 [2020-10-28 10:31:37,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:31:38,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:38,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-28 10:31:38,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:38,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:38,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:31:38,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:39,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:31:39,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308558665] [2020-10-28 10:31:39,730 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:31:39,730 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 10:31:39,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958244950] [2020-10-28 10:31:39,740 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:31:39,740 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:39,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:31:39,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:31:39,764 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-28 10:31:39,941 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:31:52,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:31:52,223 INFO L93 Difference]: Finished difference Result 2677 states and 5144 transitions. [2020-10-28 10:31:52,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:31:52,228 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 801 [2020-10-28 10:31:52,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:31:52,265 INFO L225 Difference]: With dead ends: 2677 [2020-10-28 10:31:52,265 INFO L226 Difference]: Without dead ends: 1703 [2020-10-28 10:31:52,277 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:31:52,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1703 states. [2020-10-28 10:31:52,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1703 to 1688. [2020-10-28 10:31:52,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1688 states. [2020-10-28 10:31:52,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 3016 transitions. [2020-10-28 10:31:52,479 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 3016 transitions. Word has length 801 [2020-10-28 10:31:52,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:31:52,487 INFO L481 AbstractCegarLoop]: Abstraction has 1688 states and 3016 transitions. [2020-10-28 10:31:52,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:31:52,488 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 3016 transitions. [2020-10-28 10:31:52,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 821 [2020-10-28 10:31:52,535 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:31:52,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:31:52,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:31:52,537 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:31:52,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:31:52,540 INFO L82 PathProgramCache]: Analyzing trace with hash -1452545601, now seen corresponding path program 1 times [2020-10-28 10:31:52,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:31:52,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409604119] [2020-10-28 10:31:52,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:31:52,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:52,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:53,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:57,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:57,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 838 [2020-10-28 10:31:57,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:31:57,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 10:31:57,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:57,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:57,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 10:31:57,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:31:57,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 829 [2020-10-28 10:31:57,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:58,472 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:31:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:31:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:58,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:58,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:31:58,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:31:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:31:58,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:58,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:58,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:31:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:31:58,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:31:58,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:31:58,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:58,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:31:58,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:31:58,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:31:58,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:31:58,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-28 10:31:58,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:31:58,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:31:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:31:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:31:58,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:31:58,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:31:59,245 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 10:31:59,246 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409604119] [2020-10-28 10:31:59,246 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:31:59,246 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 10:31:59,246 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325521827] [2020-10-28 10:31:59,252 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 10:31:59,252 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:31:59,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 10:31:59,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:31:59,254 INFO L87 Difference]: Start difference. First operand 1688 states and 3016 transitions. Second operand 5 states. [2020-10-28 10:31:59,407 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:10,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:10,315 INFO L93 Difference]: Finished difference Result 5075 states and 9133 transitions. [2020-10-28 10:32:10,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:32:10,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 820 [2020-10-28 10:32:10,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:10,344 INFO L225 Difference]: With dead ends: 5075 [2020-10-28 10:32:10,345 INFO L226 Difference]: Without dead ends: 3393 [2020-10-28 10:32:10,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 10:32:10,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3393 states. [2020-10-28 10:32:10,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3393 to 3378. [2020-10-28 10:32:10,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3378 states. [2020-10-28 10:32:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3378 states to 3378 states and 5691 transitions. [2020-10-28 10:32:10,481 INFO L78 Accepts]: Start accepts. Automaton has 3378 states and 5691 transitions. Word has length 820 [2020-10-28 10:32:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:10,483 INFO L481 AbstractCegarLoop]: Abstraction has 3378 states and 5691 transitions. [2020-10-28 10:32:10,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 10:32:10,483 INFO L276 IsEmpty]: Start isEmpty. Operand 3378 states and 5691 transitions. [2020-10-28 10:32:10,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 823 [2020-10-28 10:32:10,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:10,499 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:32:10,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:32:10,499 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:10,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:10,501 INFO L82 PathProgramCache]: Analyzing trace with hash -965778525, now seen corresponding path program 1 times [2020-10-28 10:32:10,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:10,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [803930554] [2020-10-28 10:32:10,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:10,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:11,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:13,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:15,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:15,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 840 [2020-10-28 10:32:15,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:32:15,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-28 10:32:15,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:15,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:15,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:32:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:32:15,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-28 10:32:15,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:32:15,851 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:32:15,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:15,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:15,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:15,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:15,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:15,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:32:15,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:15,872 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:15,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:32:15,873 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:15,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:15,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:15,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:15,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:15,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:32:15,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:15,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-28 10:32:15,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:15,951 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:15,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 10:32:15,952 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:16,526 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:32:16,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [803930554] [2020-10-28 10:32:16,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:32:16,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:32:16,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604046951] [2020-10-28 10:32:16,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:16,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:16,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:16,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:16,530 INFO L87 Difference]: Start difference. First operand 3378 states and 5691 transitions. Second operand 7 states. [2020-10-28 10:32:24,130 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:30,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:30,014 INFO L93 Difference]: Finished difference Result 10367 states and 18064 transitions. [2020-10-28 10:32:30,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:32:30,015 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 822 [2020-10-28 10:32:30,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:30,071 INFO L225 Difference]: With dead ends: 10367 [2020-10-28 10:32:30,071 INFO L226 Difference]: Without dead ends: 6995 [2020-10-28 10:32:30,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:32:30,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6995 states. [2020-10-28 10:32:30,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6995 to 6855. [2020-10-28 10:32:30,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6855 states. [2020-10-28 10:32:30,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6855 states to 6855 states and 10239 transitions. [2020-10-28 10:32:30,358 INFO L78 Accepts]: Start accepts. Automaton has 6855 states and 10239 transitions. Word has length 822 [2020-10-28 10:32:30,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:30,359 INFO L481 AbstractCegarLoop]: Abstraction has 6855 states and 10239 transitions. [2020-10-28 10:32:30,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:30,361 INFO L276 IsEmpty]: Start isEmpty. Operand 6855 states and 10239 transitions. [2020-10-28 10:32:30,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 831 [2020-10-28 10:32:30,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:30,389 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:32:30,389 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:32:30,389 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:30,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:30,390 INFO L82 PathProgramCache]: Analyzing trace with hash -377658875, now seen corresponding path program 1 times [2020-10-28 10:32:30,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:30,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495266557] [2020-10-28 10:32:30,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:30,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:30,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:33,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:34,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:35,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:35,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 850 [2020-10-28 10:32:35,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:32:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5124 [2020-10-28 10:32:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:35,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:32:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 10:32:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:32:35,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:35,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:35,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:35,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:35,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:35,845 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:35,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:35,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:35,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:32:35,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:35,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 10:32:35,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:35,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:35,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:32:35,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:35,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:32:35,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:35,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:35,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:35,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:32:35,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:35,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-28 10:32:35,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:35,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:35,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:35,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 10:32:35,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 28 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 10:32:36,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495266557] [2020-10-28 10:32:36,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:36,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:32:36,216 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015212283] [2020-10-28 10:32:36,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:36,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:36,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:36,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:36,218 INFO L87 Difference]: Start difference. First operand 6855 states and 10239 transitions. Second operand 7 states. [2020-10-28 10:32:36,437 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:45,050 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:32:51,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:32:51,285 INFO L93 Difference]: Finished difference Result 17389 states and 26852 transitions. [2020-10-28 10:32:51,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 10:32:51,286 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 830 [2020-10-28 10:32:51,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:32:51,357 INFO L225 Difference]: With dead ends: 17389 [2020-10-28 10:32:51,357 INFO L226 Difference]: Without dead ends: 10540 [2020-10-28 10:32:51,378 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:32:51,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10540 states. [2020-10-28 10:32:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10540 to 10447. [2020-10-28 10:32:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10447 states. [2020-10-28 10:32:51,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10447 states to 10447 states and 15132 transitions. [2020-10-28 10:32:51,725 INFO L78 Accepts]: Start accepts. Automaton has 10447 states and 15132 transitions. Word has length 830 [2020-10-28 10:32:51,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:32:51,725 INFO L481 AbstractCegarLoop]: Abstraction has 10447 states and 15132 transitions. [2020-10-28 10:32:51,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:32:51,725 INFO L276 IsEmpty]: Start isEmpty. Operand 10447 states and 15132 transitions. [2020-10-28 10:32:51,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 866 [2020-10-28 10:32:51,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:32:51,765 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:32:51,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 10:32:51,765 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:32:51,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:32:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash -702624312, now seen corresponding path program 1 times [2020-10-28 10:32:51,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:32:51,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175550704] [2020-10-28 10:32:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:32:51,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:51,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:51,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:53,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:54,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:56,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:56,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 889 [2020-10-28 10:32:56,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 10:32:56,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-28 10:32:56,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:56,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:56,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:32:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-28 10:32:56,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-28 10:32:56,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 10:32:57,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:32:57,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:57,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:57,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:32:57,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:57,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 10:32:57,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:57,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:57,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:57,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:57,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:32:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:57,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:57,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-28 10:32:57,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:57,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:32:57,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:57,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:32:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:32:57,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 10:32:57,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:57,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-28 10:32:57,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:57,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:57,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:57,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:57,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 10:32:57,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:57,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 10:32:57,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:57,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:57,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:57,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:32:57,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:32:57,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:57,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 10:32:57,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:32:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:32:57,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:32:57,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:32:57,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:32:57,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:32:57,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:32:57,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:32:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:32:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:32:57,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:32:57,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:32:57,771 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 78 proven. 20 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 10:32:57,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175550704] [2020-10-28 10:32:57,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:32:57,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:32:57,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785037660] [2020-10-28 10:32:57,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:32:57,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:32:57,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:32:57,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:32:57,774 INFO L87 Difference]: Start difference. First operand 10447 states and 15132 transitions. Second operand 7 states. [2020-10-28 10:32:57,912 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:33:00,635 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:33:12,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:33:12,400 INFO L93 Difference]: Finished difference Result 31311 states and 47118 transitions. [2020-10-28 10:33:12,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:33:12,401 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 865 [2020-10-28 10:33:12,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:33:12,477 INFO L225 Difference]: With dead ends: 31311 [2020-10-28 10:33:12,478 INFO L226 Difference]: Without dead ends: 20870 [2020-10-28 10:33:12,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:33:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20870 states. [2020-10-28 10:33:12,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20870 to 19125. [2020-10-28 10:33:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19125 states. [2020-10-28 10:33:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19125 states to 19125 states and 26419 transitions. [2020-10-28 10:33:13,033 INFO L78 Accepts]: Start accepts. Automaton has 19125 states and 26419 transitions. Word has length 865 [2020-10-28 10:33:13,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:33:13,034 INFO L481 AbstractCegarLoop]: Abstraction has 19125 states and 26419 transitions. [2020-10-28 10:33:13,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:33:13,034 INFO L276 IsEmpty]: Start isEmpty. Operand 19125 states and 26419 transitions. [2020-10-28 10:33:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 881 [2020-10-28 10:33:13,236 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:33:13,237 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:33:13,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 10:33:13,238 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:33:13,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:33:13,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1725166323, now seen corresponding path program 1 times [2020-10-28 10:33:13,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:33:13,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [687111064] [2020-10-28 10:33:13,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:33:13,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:13,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:13,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:18,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:18,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 902 [2020-10-28 10:33:18,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:33:18,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5050 [2020-10-28 10:33:18,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:18,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:33:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-28 10:33:18,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 10:33:18,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:18,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:33:18,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:18,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:18,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:18,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:33:18,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:18,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:33:18,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:18,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:18,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:18,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:18,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:18,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:33:18,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:18,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:18,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 10:33:18,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:18,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 10:33:18,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:18,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:33:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:18,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-28 10:33:18,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:18,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-28 10:33:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:18,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:18,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:18,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:33:18,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-28 10:33:18,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:18,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:33:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-28 10:33:18,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 10:33:18,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 10:33:18,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:18,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:18,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:18,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-28 10:33:18,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:18,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-28 10:33:18,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:18,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:18,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-28 10:33:18,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:18,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:33:19,461 INFO L134 CoverageAnalysis]: Checked inductivity of 107 backedges. 79 proven. 20 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-28 10:33:19,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [687111064] [2020-10-28 10:33:19,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:33:19,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:33:19,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748099415] [2020-10-28 10:33:19,466 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:33:19,466 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:33:19,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:33:19,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:33:19,467 INFO L87 Difference]: Start difference. First operand 19125 states and 26419 transitions. Second operand 8 states. [2020-10-28 10:33:19,790 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:33:28,641 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:33:38,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:33:38,730 INFO L93 Difference]: Finished difference Result 48429 states and 69048 transitions. [2020-10-28 10:33:38,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:33:38,731 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 880 [2020-10-28 10:33:38,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:33:38,831 INFO L225 Difference]: With dead ends: 48429 [2020-10-28 10:33:38,832 INFO L226 Difference]: Without dead ends: 29310 [2020-10-28 10:33:38,884 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:33:38,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29310 states. [2020-10-28 10:33:39,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29310 to 25902. [2020-10-28 10:33:39,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25902 states. [2020-10-28 10:33:39,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25902 states to 25902 states and 34307 transitions. [2020-10-28 10:33:39,711 INFO L78 Accepts]: Start accepts. Automaton has 25902 states and 34307 transitions. Word has length 880 [2020-10-28 10:33:39,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:33:39,712 INFO L481 AbstractCegarLoop]: Abstraction has 25902 states and 34307 transitions. [2020-10-28 10:33:39,712 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:33:39,712 INFO L276 IsEmpty]: Start isEmpty. Operand 25902 states and 34307 transitions. [2020-10-28 10:33:39,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 928 [2020-10-28 10:33:39,776 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:33:39,777 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:33:39,777 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 10:33:39,777 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:33:39,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:33:39,778 INFO L82 PathProgramCache]: Analyzing trace with hash 788427414, now seen corresponding path program 1 times [2020-10-28 10:33:39,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:33:39,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [89296784] [2020-10-28 10:33:39,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:33:39,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:39,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:39,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:40,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:44,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:44,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-28 10:33:44,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-28 10:33:44,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:45,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:33:45,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:45,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:45,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:45,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:33:45,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:33:45,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:45,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:33:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:45,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:45,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:45,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-28 10:33:45,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:45,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 10:33:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:45,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:45,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:33:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:45,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 10:33:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:33:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:33:45,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:33:45,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:33:45,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:33:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 221 backedges. 117 proven. 66 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-10-28 10:33:45,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [89296784] [2020-10-28 10:33:45,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:33:45,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:33:45,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819173574] [2020-10-28 10:33:45,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:33:45,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:33:45,774 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:33:45,774 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:33:45,774 INFO L87 Difference]: Start difference. First operand 25902 states and 34307 transitions. Second operand 8 states. [2020-10-28 10:33:45,908 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-28 10:33:46,507 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:34:03,472 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-28 10:34:06,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:34:06,785 INFO L93 Difference]: Finished difference Result 95669 states and 128751 transitions. [2020-10-28 10:34:06,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 10:34:06,786 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 927 [2020-10-28 10:34:06,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:34:06,997 INFO L225 Difference]: With dead ends: 95669 [2020-10-28 10:34:06,997 INFO L226 Difference]: Without dead ends: 69773 [2020-10-28 10:34:07,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-28 10:34:07,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69773 states. [2020-10-28 10:34:08,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69773 to 67206. [2020-10-28 10:34:08,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67206 states. [2020-10-28 10:34:08,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67206 states to 67206 states and 84144 transitions. [2020-10-28 10:34:08,887 INFO L78 Accepts]: Start accepts. Automaton has 67206 states and 84144 transitions. Word has length 927 [2020-10-28 10:34:08,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:34:08,888 INFO L481 AbstractCegarLoop]: Abstraction has 67206 states and 84144 transitions. [2020-10-28 10:34:08,888 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 10:34:08,888 INFO L276 IsEmpty]: Start isEmpty. Operand 67206 states and 84144 transitions. [2020-10-28 10:34:09,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1683 [2020-10-28 10:34:09,078 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:09,080 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:34:09,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 10:34:09,080 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:09,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:09,081 INFO L82 PathProgramCache]: Analyzing trace with hash 620478333, now seen corresponding path program 1 times [2020-10-28 10:34:09,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:09,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [672984740] [2020-10-28 10:34:09,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:09,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:09,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:09,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:10,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:10,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1712 [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:14,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:34:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:34:14,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-28 10:34:14,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:14,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:14,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:14,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:14,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:14,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:34:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:14,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:34:15,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:15,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:34:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:15,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-28 10:34:15,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:15,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-28 10:34:15,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:15,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:15,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-28 10:34:15,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:15,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-28 10:34:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:15,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:15,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-28 10:34:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-28 10:34:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:15,647 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 138 [2020-10-28 10:34:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:15,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 348 [2020-10-28 10:34:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:15,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 26 [2020-10-28 10:34:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:15,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:15,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-28 10:34:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:15,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:15,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:15,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 515 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:15,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:16,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:16,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:16,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:16,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:16,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-28 10:34:16,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:16,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-28 10:34:16,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:16,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:16,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:16,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:16,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:16,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:16,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:16,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:16,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:16,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:18,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1552 backedges. 860 proven. 348 refuted. 0 times theorem prover too weak. 344 trivial. 0 not checked. [2020-10-28 10:34:18,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [672984740] [2020-10-28 10:34:18,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:34:18,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 10:34:18,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977016068] [2020-10-28 10:34:18,548 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:34:18,549 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:18,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:34:18,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:34:18,550 INFO L87 Difference]: Start difference. First operand 67206 states and 84144 transitions. Second operand 7 states. [2020-10-28 10:34:18,703 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-10-28 10:34:25,501 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 98 [2020-10-28 10:34:32,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:34:32,813 INFO L93 Difference]: Finished difference Result 138115 states and 173444 transitions. [2020-10-28 10:34:32,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:34:32,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1682 [2020-10-28 10:34:32,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:34:33,005 INFO L225 Difference]: With dead ends: 138115 [2020-10-28 10:34:33,006 INFO L226 Difference]: Without dead ends: 69225 [2020-10-28 10:34:33,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 10:34:33,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69225 states. [2020-10-28 10:34:34,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69225 to 69156. [2020-10-28 10:34:34,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69156 states. [2020-10-28 10:34:34,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69156 states to 69156 states and 84707 transitions. [2020-10-28 10:34:34,459 INFO L78 Accepts]: Start accepts. Automaton has 69156 states and 84707 transitions. Word has length 1682 [2020-10-28 10:34:34,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:34:34,460 INFO L481 AbstractCegarLoop]: Abstraction has 69156 states and 84707 transitions. [2020-10-28 10:34:34,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:34:34,460 INFO L276 IsEmpty]: Start isEmpty. Operand 69156 states and 84707 transitions. [2020-10-28 10:34:35,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1847 [2020-10-28 10:34:35,090 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:34:35,091 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:34:35,092 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 10:34:35,092 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:34:35,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:34:35,092 INFO L82 PathProgramCache]: Analyzing trace with hash -1435021617, now seen corresponding path program 1 times [2020-10-28 10:34:35,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:34:35,094 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692650447] [2020-10-28 10:34:35,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:34:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:35,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:36,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:37,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:40,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:40,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1878 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5097 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 355 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 706 [2020-10-28 10:34:40,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:41,237 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-28 10:34:41,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:34:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:41,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:41,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:41,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:34:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:41,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:41,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:41,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:41,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:41,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:41,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:41,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-28 10:34:41,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:41,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 10:34:41,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:41,380 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:41,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:41,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 242 [2020-10-28 10:34:41,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:41,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:41,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:41,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 10:34:41,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 10:34:41,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:41,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 316 [2020-10-28 10:34:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:41,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:41,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:34:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:34:41,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 10:34:41,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:41,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-28 10:34:41,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:41,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 713 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1594 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:43,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 713 [2020-10-28 10:34:43,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:43,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:43,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:43,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:44,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:44,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 486 [2020-10-28 10:34:44,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-10-28 10:34:44,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:44,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 10:34:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:44,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 486 [2020-10-28 10:34:44,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:44,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:44,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:44,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:45,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:45,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-28 10:34:45,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:45,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-10-28 10:34:45,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:45,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 10:34:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:45,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 259 [2020-10-28 10:34:45,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:45,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-28 10:34:45,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:34:45,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:34:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:34:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-28 10:34:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 10:34:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:34:49,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1496 backedges. 1360 proven. 2 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-10-28 10:34:49,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692650447] [2020-10-28 10:34:49,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 10:34:49,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 10:34:49,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801466174] [2020-10-28 10:34:49,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:34:49,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:34:49,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:34:49,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:34:49,106 INFO L87 Difference]: Start difference. First operand 69156 states and 84707 transitions. Second operand 8 states. [2020-10-28 10:34:49,432 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 95