/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/Problem13_label56.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:44:21,108 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:44:21,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:44:21,183 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:44:21,184 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:44:21,192 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:44:21,194 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:44:21,200 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:44:21,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:44:21,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:44:21,214 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:44:21,216 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:44:21,217 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:44:21,221 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:44:21,225 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:44:21,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:44:21,229 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:44:21,233 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:44:21,241 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:44:21,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:44:21,254 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:44:21,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:44:21,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:44:21,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:44:21,291 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:44:21,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:44:21,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:44:21,296 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:44:21,297 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:44:21,298 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:44:21,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:44:21,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:44:21,303 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:44:21,304 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:44:21,305 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:44:21,306 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:44:21,307 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:44:21,307 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:44:21,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:44:21,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:44:21,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:44:21,315 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 12:44:21,372 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:44:21,373 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:44:21,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:44:21,377 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:44:21,378 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:44:21,378 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:44:21,378 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:44:21,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:44:21,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:44:21,379 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:44:21,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:44:21,381 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:44:21,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:44:21,382 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:44:21,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:44:21,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:44:21,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:44:21,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:44:21,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:44:21,383 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:44:21,383 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:44:21,383 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:44:21,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:44:21,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:44:21,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:44:21,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:44:21,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:44:21,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:44:21,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:44:21,386 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:44:21,836 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:44:21,877 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:44:21,880 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:44:21,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:44:21,884 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:44:21,886 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label56.c [2020-10-28 12:44:21,974 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb9ce2c61/6feeb7cf6fbc448fa4255d5849cf41ec/FLAGc4b02e4cd [2020-10-28 12:44:23,085 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:44:23,086 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label56.c [2020-10-28 12:44:23,125 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb9ce2c61/6feeb7cf6fbc448fa4255d5849cf41ec/FLAGc4b02e4cd [2020-10-28 12:44:23,521 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb9ce2c61/6feeb7cf6fbc448fa4255d5849cf41ec [2020-10-28 12:44:23,526 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:44:23,537 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:44:23,542 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:44:23,543 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:44:23,549 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:44:23,551 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:44:23" (1/1) ... [2020-10-28 12:44:23,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4eef39b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:23, skipping insertion in model container [2020-10-28 12:44:23,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:44:23" (1/1) ... [2020-10-28 12:44:23,568 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:44:23,735 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:44:25,595 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:44:25,615 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:44:26,429 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:44:26,468 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:44:26,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26 WrapperNode [2020-10-28 12:44:26,470 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:44:26,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:44:26,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:44:26,472 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:44:26,488 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:26,491 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:26,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:26,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:26,906 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:26,952 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:26,991 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (1/1) ... [2020-10-28 12:44:27,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:44:27,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:44:27,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:44:27,053 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:44:27,054 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (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 12:44:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:44:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:44:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:44:27,139 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:44:27,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:44:27,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:44:27,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:44:27,140 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:44:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:44:27,140 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:44:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:44:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:44:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:44:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:44:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:44:27,141 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:44:27,142 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:44:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:44:27,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:44:37,081 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:44:37,081 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:44:37,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:44:37 BoogieIcfgContainer [2020-10-28 12:44:37,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:44:37,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:44:37,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:44:37,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:44:37,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:44:23" (1/3) ... [2020-10-28 12:44:37,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f7c3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:44:37, skipping insertion in model container [2020-10-28 12:44:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:44:26" (2/3) ... [2020-10-28 12:44:37,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72f7c3c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:44:37, skipping insertion in model container [2020-10-28 12:44:37,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:44:37" (3/3) ... [2020-10-28 12:44:37,096 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem13_label56.c [2020-10-28 12:44:37,110 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:44:37,118 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:44:37,133 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:44:37,172 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:44:37,172 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:44:37,172 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:44:37,173 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:44:37,173 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:44:37,173 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:44:37,173 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:44:37,173 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:44:37,214 INFO L276 IsEmpty]: Start isEmpty. Operand 1123 states. [2020-10-28 12:44:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 12:44:37,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:37,230 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] [2020-10-28 12:44:37,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:37,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:37,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1329457938, now seen corresponding path program 1 times [2020-10-28 12:44:37,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:37,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1642940571] [2020-10-28 12:44:37,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:37,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:38,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:38,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 12:44:38,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:38,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 751 [2020-10-28 12:44:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:38,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:44:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:44:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 12:44:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:44:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:38,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:38,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:38,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:38,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:38,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:38,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-28 12:44:38,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:38,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:38,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:44:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:38,566 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 12:44:38,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1642940571] [2020-10-28 12:44:38,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:44:38,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:44:38,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226029993] [2020-10-28 12:44:38,577 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:44:38,577 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:38,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:44:38,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:44:38,647 INFO L87 Difference]: Start difference. First operand 1123 states. Second operand 4 states. [2020-10-28 12:44:54,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:44:54,287 INFO L93 Difference]: Finished difference Result 3235 states and 5915 transitions. [2020-10-28 12:44:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:44:54,290 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-28 12:44:54,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:44:54,334 INFO L225 Difference]: With dead ends: 3235 [2020-10-28 12:44:54,334 INFO L226 Difference]: Without dead ends: 2027 [2020-10-28 12:44:54,349 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:44:54,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2027 states. [2020-10-28 12:44:54,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2027 to 2010. [2020-10-28 12:44:54,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2010 states. [2020-10-28 12:44:54,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 3292 transitions. [2020-10-28 12:44:54,611 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 3292 transitions. Word has length 60 [2020-10-28 12:44:54,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:44:54,612 INFO L481 AbstractCegarLoop]: Abstraction has 2010 states and 3292 transitions. [2020-10-28 12:44:54,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:44:54,613 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 3292 transitions. [2020-10-28 12:44:54,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 12:44:54,620 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:44:54,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:44:54,621 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:44:54,622 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:44:54,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:44:54,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1502968362, now seen corresponding path program 1 times [2020-10-28 12:44:54,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:44:54,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1306891164] [2020-10-28 12:44:54,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:44:54,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:54,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:54,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:56,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:57,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:57,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-28 12:44:57,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:44:57,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2487 [2020-10-28 12:44:57,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:57,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:57,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:44:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:44:57,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 12:44:57,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:44:57,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:44:57,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:57,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:57,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:57,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:44:57,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:57,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-28 12:44:57,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:57,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:44:57,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:44:57,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:44:57,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-28 12:44:57,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:44:57,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:44:57,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:44:57,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:44:57,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:44:57,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:44:57,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:44:57,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:44:57,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:44:57,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:44:57,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:44:57,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-28 12:44:57,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:44:57,781 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:44:57,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1306891164] [2020-10-28 12:44:57,782 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:44:57,782 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:44:57,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276375588] [2020-10-28 12:44:57,784 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:44:57,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:44:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:44:57,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:44:57,790 INFO L87 Difference]: Start difference. First operand 2010 states and 3292 transitions. Second operand 7 states. [2020-10-28 12:45:29,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:29,117 INFO L93 Difference]: Finished difference Result 5857 states and 9674 transitions. [2020-10-28 12:45:29,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:45:29,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-28 12:45:29,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:29,157 INFO L225 Difference]: With dead ends: 5857 [2020-10-28 12:45:29,157 INFO L226 Difference]: Without dead ends: 3853 [2020-10-28 12:45:29,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:45:29,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3853 states. [2020-10-28 12:45:29,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3853 to 3762. [2020-10-28 12:45:29,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3762 states. [2020-10-28 12:45:29,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5630 transitions. [2020-10-28 12:45:29,359 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5630 transitions. Word has length 135 [2020-10-28 12:45:29,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:29,362 INFO L481 AbstractCegarLoop]: Abstraction has 3762 states and 5630 transitions. [2020-10-28 12:45:29,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:45:29,363 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5630 transitions. [2020-10-28 12:45:29,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-10-28 12:45:29,377 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:29,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:29,378 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:45:29,378 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:29,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:29,382 INFO L82 PathProgramCache]: Analyzing trace with hash -724673810, now seen corresponding path program 1 times [2020-10-28 12:45:29,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:29,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [133359523] [2020-10-28 12:45:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:29,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:29,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:30,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:30,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 12:45:30,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:45:30,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1493 [2020-10-28 12:45:30,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:30,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:30,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:45:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:45:30,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:45:30,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 12:45:31,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:31,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:31,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:31,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:31,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:31,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:31,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:45:31,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:31,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:31,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:45:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:31,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:31,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:31,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:31,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:31,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:45:31,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:31,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-28 12:45:31,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:31,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:31,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:45:31,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:45:31,527 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:45:31,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [133359523] [2020-10-28 12:45:31,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:45:31,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:45:31,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121923535] [2020-10-28 12:45:31,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:45:31,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:45:31,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:45:31,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:45:31,534 INFO L87 Difference]: Start difference. First operand 3762 states and 5630 transitions. Second operand 7 states. [2020-10-28 12:45:57,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:45:57,382 INFO L93 Difference]: Finished difference Result 11174 states and 17174 transitions. [2020-10-28 12:45:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:45:57,383 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 149 [2020-10-28 12:45:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:45:57,436 INFO L225 Difference]: With dead ends: 11174 [2020-10-28 12:45:57,436 INFO L226 Difference]: Without dead ends: 7418 [2020-10-28 12:45:57,451 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:45:57,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7418 states. [2020-10-28 12:45:57,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7418 to 7246. [2020-10-28 12:45:57,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7246 states. [2020-10-28 12:45:57,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7246 states to 7246 states and 9809 transitions. [2020-10-28 12:45:57,720 INFO L78 Accepts]: Start accepts. Automaton has 7246 states and 9809 transitions. Word has length 149 [2020-10-28 12:45:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:45:57,720 INFO L481 AbstractCegarLoop]: Abstraction has 7246 states and 9809 transitions. [2020-10-28 12:45:57,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:45:57,720 INFO L276 IsEmpty]: Start isEmpty. Operand 7246 states and 9809 transitions. [2020-10-28 12:45:57,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 12:45:57,724 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:45:57,724 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:45:57,725 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:45:57,725 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:45:57,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:45:57,726 INFO L82 PathProgramCache]: Analyzing trace with hash -450534458, now seen corresponding path program 1 times [2020-10-28 12:45:57,726 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:45:57,726 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1220035073] [2020-10-28 12:45:57,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:45:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:57,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:58,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:58,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:59,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:59,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-10-28 12:45:59,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:45:59,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1560 [2020-10-28 12:45:59,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:59,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:45:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:45:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-10-28 12:45:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:59,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:45:59,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:59,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:59,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:59,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:45:59,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:59,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:45:59,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:59,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:45:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:45:59,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:45:59,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:45:59,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:45:59,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:45:59,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:45:59,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:45:59,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 12:45:59,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:45:59,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-28 12:45:59,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:45:59,882 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:45:59,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:45:59,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:45:59,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-28 12:45:59,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 12:46:00,043 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:46:00,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1220035073] [2020-10-28 12:46:00,044 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:46:00,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:46:00,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972232737] [2020-10-28 12:46:00,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:00,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:00,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:00,047 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:00,047 INFO L87 Difference]: Start difference. First operand 7246 states and 9809 transitions. Second operand 7 states. [2020-10-28 12:46:01,772 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:46:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:46:25,332 INFO L93 Difference]: Finished difference Result 21623 states and 30527 transitions. [2020-10-28 12:46:25,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:46:25,334 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-28 12:46:25,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:46:25,413 INFO L225 Difference]: With dead ends: 21623 [2020-10-28 12:46:25,413 INFO L226 Difference]: Without dead ends: 14383 [2020-10-28 12:46:25,444 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:46:25,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14383 states. [2020-10-28 12:46:25,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14383 to 14294. [2020-10-28 12:46:25,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14294 states. [2020-10-28 12:46:25,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14294 states to 14294 states and 18379 transitions. [2020-10-28 12:46:25,864 INFO L78 Accepts]: Start accepts. Automaton has 14294 states and 18379 transitions. Word has length 178 [2020-10-28 12:46:25,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:46:25,865 INFO L481 AbstractCegarLoop]: Abstraction has 14294 states and 18379 transitions. [2020-10-28 12:46:25,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:46:25,866 INFO L276 IsEmpty]: Start isEmpty. Operand 14294 states and 18379 transitions. [2020-10-28 12:46:25,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-28 12:46:25,876 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:46:25,877 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:46:25,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:46:25,877 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:46:25,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:46:25,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1189693354, now seen corresponding path program 1 times [2020-10-28 12:46:25,879 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:46:25,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1757718929] [2020-10-28 12:46:25,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:46:25,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:26,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:26,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:31,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:31,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-28 12:46:31,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:46:31,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-28 12:46:31,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:31,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:31,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-28 12:46:31,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-28 12:46:31,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:46:31,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:46:31,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:31,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:31,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:31,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:46:31,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:31,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-28 12:46:31,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:31,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:46:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:31,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:46:31,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:31,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:46:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:31,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:31,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:31,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:46:31,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:31,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-28 12:46:31,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:31,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:46:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:46:31,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-28 12:46:31,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:46:31,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 12:46:31,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:46:31,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:46:31,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:46:31,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-28 12:46:31,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:46:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-28 12:46:31,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:46:31,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:46:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:46:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:46:31,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-28 12:46:31,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:46:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 194 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:46:31,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1757718929] [2020-10-28 12:46:31,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:46:31,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:46:31,999 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709243394] [2020-10-28 12:46:32,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:46:32,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:46:32,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:46:32,002 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:46:32,002 INFO L87 Difference]: Start difference. First operand 14294 states and 18379 transitions. Second operand 7 states. [2020-10-28 12:47:03,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:03,383 INFO L93 Difference]: Finished difference Result 42586 states and 56860 transitions. [2020-10-28 12:47:03,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:47:03,387 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-28 12:47:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:03,542 INFO L225 Difference]: With dead ends: 42586 [2020-10-28 12:47:03,543 INFO L226 Difference]: Without dead ends: 28298 [2020-10-28 12:47:03,591 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:47:03,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28298 states. [2020-10-28 12:47:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28298 to 28095. [2020-10-28 12:47:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28095 states. [2020-10-28 12:47:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28095 states to 28095 states and 37556 transitions. [2020-10-28 12:47:04,542 INFO L78 Accepts]: Start accepts. Automaton has 28095 states and 37556 transitions. Word has length 260 [2020-10-28 12:47:04,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:04,543 INFO L481 AbstractCegarLoop]: Abstraction has 28095 states and 37556 transitions. [2020-10-28 12:47:04,543 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:47:04,543 INFO L276 IsEmpty]: Start isEmpty. Operand 28095 states and 37556 transitions. [2020-10-28 12:47:04,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-10-28 12:47:04,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:04,552 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-28 12:47:04,552 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:47:04,552 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:04,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:04,553 INFO L82 PathProgramCache]: Analyzing trace with hash -993401275, now seen corresponding path program 1 times [2020-10-28 12:47:04,553 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:04,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [592763052] [2020-10-28 12:47:04,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:04,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:04,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:05,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:07,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:09,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:09,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-10-28 12:47:09,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:47:09,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 12:47:09,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:09,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:47:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 129 [2020-10-28 12:47:09,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-28 12:47:09,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:09,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:09,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:09,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:09,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:09,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:09,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:09,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 12:47:09,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:09,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:09,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:09,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:09,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:09,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:09,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:09,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:10,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:10,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-28 12:47:10,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:10,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-28 12:47:10,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:10,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:10,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:10,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-28 12:47:10,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:47:10,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 12:47:10,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:10,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:10,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:10,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:10,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:47:10,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:10,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-10-28 12:47:10,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:10,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:10,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:47:10,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:10,500 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-28 12:47:10,501 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [592763052] [2020-10-28 12:47:10,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:10,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:47:10,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126552801] [2020-10-28 12:47:10,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:47:10,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:10,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:47:10,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:47:10,506 INFO L87 Difference]: Start difference. First operand 28095 states and 37556 transitions. Second operand 5 states. [2020-10-28 12:47:37,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:47:37,296 INFO L93 Difference]: Finished difference Result 65075 states and 91150 transitions. [2020-10-28 12:47:37,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:47:37,298 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 269 [2020-10-28 12:47:37,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:47:37,446 INFO L225 Difference]: With dead ends: 65075 [2020-10-28 12:47:37,447 INFO L226 Difference]: Without dead ends: 36986 [2020-10-28 12:47:37,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 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 12:47:37,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36986 states. [2020-10-28 12:47:38,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36986 to 36971. [2020-10-28 12:47:38,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36971 states. [2020-10-28 12:47:38,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36971 states to 36971 states and 49567 transitions. [2020-10-28 12:47:38,418 INFO L78 Accepts]: Start accepts. Automaton has 36971 states and 49567 transitions. Word has length 269 [2020-10-28 12:47:38,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:47:38,419 INFO L481 AbstractCegarLoop]: Abstraction has 36971 states and 49567 transitions. [2020-10-28 12:47:38,419 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:47:38,419 INFO L276 IsEmpty]: Start isEmpty. Operand 36971 states and 49567 transitions. [2020-10-28 12:47:38,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-10-28 12:47:38,427 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:47:38,428 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:47:38,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:47:38,429 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:47:38,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:47:38,429 INFO L82 PathProgramCache]: Analyzing trace with hash -590887135, now seen corresponding path program 1 times [2020-10-28 12:47:38,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:47:38,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45270089] [2020-10-28 12:47:38,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:47:38,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:39,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:39,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:40,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:41,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:41,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-28 12:47:41,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-28 12:47:41,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3034 [2020-10-28 12:47:41,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:41,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:47:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-28 12:47:41,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-28 12:47:41,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:42,100 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:47:42,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:47:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:42,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:42,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:47:42,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:42,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 12:47:42,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:42,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:47:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:42,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:47:42,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:47:42,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:47:42,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:42,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:42,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:42,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-28 12:47:42,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:47:42,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-28 12:47:42,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:42,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:47:42,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:47:42,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-28 12:47:42,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:47:42,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-28 12:47:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:47:42,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:42,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:47:42,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:47:42,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 12:47:42,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:47:42,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-28 12:47:42,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:47:42,741 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:47:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:47:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:47:42,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-28 12:47:42,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:47:42,938 INFO L134 CoverageAnalysis]: Checked inductivity of 197 backedges. 140 proven. 52 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:47:42,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45270089] [2020-10-28 12:47:42,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:47:42,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:47:42,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055547794] [2020-10-28 12:47:42,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:47:42,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:47:42,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:47:42,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:47:42,942 INFO L87 Difference]: Start difference. First operand 36971 states and 49567 transitions. Second operand 7 states.