/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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 -i ../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:31:10,058 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:31:10,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:31:10,109 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:31:10,110 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:31:10,119 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:31:10,121 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:31:10,125 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:31:10,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:31:10,131 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:31:10,132 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:31:10,134 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:31:10,134 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:31:10,137 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:31:10,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:31:10,143 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:31:10,145 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:31:10,146 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:31:10,148 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:31:10,156 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:31:10,159 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:31:10,160 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:31:10,161 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:31:10,162 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:31:10,178 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:31:10,178 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:31:10,178 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:31:10,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:31:10,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:31:10,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:31:10,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:31:10,188 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:31:10,189 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:31:10,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:31:10,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:31:10,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:31:10,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:31:10,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:31:10,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:31:10,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:31:10,202 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:31:10,203 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 [2020-10-14 21:31:10,249 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:31:10,249 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:31:10,252 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:31:10,252 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:31:10,252 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:31:10,253 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:31:10,253 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:31:10,254 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:31:10,254 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:31:10,254 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:31:10,255 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:31:10,255 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:31:10,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:31:10,256 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:31:10,256 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:31:10,257 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:31:10,257 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:31:10,257 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:31:10,257 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:31:10,257 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:31:10,258 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:31:10,258 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:31:10,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:31:10,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:31:10,259 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:31:10,259 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:31:10,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:31:10,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:31:10,260 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:31:10,260 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:31:10,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:31:10,619 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:31:10,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:31:10,628 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:31:10,629 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:31:10,629 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem13_label37.c [2020-10-14 21:31:10,714 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0ac6ffa/21905930dcd44d5d852e7da2c42b333b/FLAGbc9c3eb6a [2020-10-14 21:31:11,554 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:31:11,555 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem13_label37.c [2020-10-14 21:31:11,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0ac6ffa/21905930dcd44d5d852e7da2c42b333b/FLAGbc9c3eb6a [2020-10-14 21:31:12,046 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9f0ac6ffa/21905930dcd44d5d852e7da2c42b333b [2020-10-14 21:31:12,056 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:31:12,057 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:31:12,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:31:12,059 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:31:12,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:31:12,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:31:12" (1/1) ... [2020-10-14 21:31:12,068 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20d022c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:12, skipping insertion in model container [2020-10-14 21:31:12,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:31:12" (1/1) ... [2020-10-14 21:31:12,076 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:31:12,273 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:31:13,933 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:31:13,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:31:14,781 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:31:14,818 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:31:14,827 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14 WrapperNode [2020-10-14 21:31:14,827 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:31:14,828 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:31:14,828 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:31:14,828 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:31:14,843 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:14,846 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:14,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:14,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:15,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:15,108 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:15,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (1/1) ... [2020-10-14 21:31:15,205 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:31:15,206 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:31:15,206 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:31:15,207 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:31:15,208 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (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 [2020-10-14 21:31:15,292 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:31:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:31:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:31:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:31:15,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:31:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:31:15,294 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:31:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:31:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:31:15,295 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:31:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:31:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:31:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:31:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:31:15,296 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:31:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:31:15,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:31:27,120 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:31:27,124 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:31:27,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:31:27 BoogieIcfgContainer [2020-10-14 21:31:27,140 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:31:27,141 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:31:27,141 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:31:27,145 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:31:27,145 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:31:12" (1/3) ... [2020-10-14 21:31:27,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c054ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:31:27, skipping insertion in model container [2020-10-14 21:31:27,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:31:14" (2/3) ... [2020-10-14 21:31:27,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c054ba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:31:27, skipping insertion in model container [2020-10-14 21:31:27,234 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:31:27" (3/3) ... [2020-10-14 21:31:27,236 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem13_label37.c [2020-10-14 21:31:27,246 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:31:27,255 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:31:27,270 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:31:27,305 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:31:27,305 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:31:27,305 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:31:27,305 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:31:27,306 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:31:27,306 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:31:27,306 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:31:27,306 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:31:27,353 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states. [2020-10-14 21:31:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-14 21:31:27,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:27,366 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] [2020-10-14 21:31:27,366 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:27,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:27,374 INFO L82 PathProgramCache]: Analyzing trace with hash -49259937, now seen corresponding path program 1 times [2020-10-14 21:31:27,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:27,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066684474] [2020-10-14 21:31:27,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:28,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:28,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-14 21:31:28,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:28,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-14 21:31:28,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:28,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:28,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:28,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-14 21:31:28,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:31:28,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:28,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:28,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:28,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:28,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:28,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:28,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-14 21:31:28,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:28,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:28,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:28,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:28,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:28,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066684474] [2020-10-14 21:31:28,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:28,340 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:31:28,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041050914] [2020-10-14 21:31:28,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:31:28,349 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:28,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:31:28,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:31:28,367 INFO L87 Difference]: Start difference. First operand 1119 states. Second operand 4 states. [2020-10-14 21:31:42,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:31:42,803 INFO L93 Difference]: Finished difference Result 3152 states and 5831 transitions. [2020-10-14 21:31:42,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:31:42,806 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-14 21:31:42,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:31:42,843 INFO L225 Difference]: With dead ends: 3152 [2020-10-14 21:31:42,844 INFO L226 Difference]: Without dead ends: 1954 [2020-10-14 21:31:42,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:31:42,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1954 states. [2020-10-14 21:31:43,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1954 to 1885. [2020-10-14 21:31:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1885 states. [2020-10-14 21:31:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 3103 transitions. [2020-10-14 21:31:43,085 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 3103 transitions. Word has length 60 [2020-10-14 21:31:43,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:31:43,088 INFO L479 AbstractCegarLoop]: Abstraction has 1885 states and 3103 transitions. [2020-10-14 21:31:43,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:31:43,089 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 3103 transitions. [2020-10-14 21:31:43,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-14 21:31:43,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:31:43,106 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:31:43,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:31:43,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:31:43,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:31:43,109 INFO L82 PathProgramCache]: Analyzing trace with hash -372436042, now seen corresponding path program 1 times [2020-10-14 21:31:43,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:31:43,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558140932] [2020-10-14 21:31:43,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:31:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:43,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:44,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:44,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-14 21:31:44,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:31:44,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1177 [2020-10-14 21:31:44,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:44,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:31:44,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:31:44,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:31:44,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:31:44,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:31:44,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:44,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:44,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:44,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:31:44,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:44,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:31:44,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:44,467 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:31:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:31:44,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:31:44,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:44,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:31:44,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:31:44,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:31:44,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:31:44,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-14 21:31:44,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:31:44,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 21:31:44,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:31:44,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:31:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:31:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:31:44,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-14 21:31:44,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:31:44,846 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:31:44,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558140932] [2020-10-14 21:31:44,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:31:44,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:31:44,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190952550] [2020-10-14 21:31:44,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:31:44,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:31:44,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:31:44,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:31:44,852 INFO L87 Difference]: Start difference. First operand 1885 states and 3103 transitions. Second operand 7 states. [2020-10-14 21:32:08,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:08,786 INFO L93 Difference]: Finished difference Result 5666 states and 9316 transitions. [2020-10-14 21:32:08,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:32:08,789 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 130 [2020-10-14 21:32:08,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:08,811 INFO L225 Difference]: With dead ends: 5666 [2020-10-14 21:32:08,811 INFO L226 Difference]: Without dead ends: 3787 [2020-10-14 21:32:08,818 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:32:08,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3787 states. [2020-10-14 21:32:08,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3787 to 3706. [2020-10-14 21:32:08,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3706 states. [2020-10-14 21:32:08,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3706 states to 3706 states and 5584 transitions. [2020-10-14 21:32:08,930 INFO L78 Accepts]: Start accepts. Automaton has 3706 states and 5584 transitions. Word has length 130 [2020-10-14 21:32:08,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:08,931 INFO L479 AbstractCegarLoop]: Abstraction has 3706 states and 5584 transitions. [2020-10-14 21:32:08,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:32:08,931 INFO L276 IsEmpty]: Start isEmpty. Operand 3706 states and 5584 transitions. [2020-10-14 21:32:08,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 21:32:08,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:08,934 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:08,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:32:08,935 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:08,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:08,935 INFO L82 PathProgramCache]: Analyzing trace with hash -650147365, now seen corresponding path program 1 times [2020-10-14 21:32:08,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:08,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [665601899] [2020-10-14 21:32:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:08,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:09,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:10,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:10,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:10,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 21:32:10,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:32:10,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2017 [2020-10-14 21:32:10,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:10,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:10,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:32:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:32:10,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-14 21:32:10,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:11,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:11,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:32:11,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:11,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:11,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:32:11,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:11,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:11,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:11,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:11,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:11,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:32:11,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:11,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-14 21:32:11,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:11,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:32:11,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:32:11,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:32:11,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:11,408 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:32:11,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [665601899] [2020-10-14 21:32:11,409 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:32:11,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:32:11,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177471881] [2020-10-14 21:32:11,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:11,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:11,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:11,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:11,414 INFO L87 Difference]: Start difference. First operand 3706 states and 5584 transitions. Second operand 7 states. [2020-10-14 21:32:37,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:32:37,519 INFO L93 Difference]: Finished difference Result 8414 states and 13003 transitions. [2020-10-14 21:32:37,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:32:37,521 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 21:32:37,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:32:37,556 INFO L225 Difference]: With dead ends: 8414 [2020-10-14 21:32:37,556 INFO L226 Difference]: Without dead ends: 4714 [2020-10-14 21:32:37,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:32:37,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2020-10-14 21:32:37,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4568. [2020-10-14 21:32:37,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4568 states. [2020-10-14 21:32:37,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 6213 transitions. [2020-10-14 21:32:37,733 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 6213 transitions. Word has length 135 [2020-10-14 21:32:37,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:32:37,737 INFO L479 AbstractCegarLoop]: Abstraction has 4568 states and 6213 transitions. [2020-10-14 21:32:37,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:32:37,741 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 6213 transitions. [2020-10-14 21:32:37,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 21:32:37,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:32:37,744 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:32:37,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:32:37,745 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:32:37,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:32:37,745 INFO L82 PathProgramCache]: Analyzing trace with hash -1926249641, now seen corresponding path program 1 times [2020-10-14 21:32:37,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:32:37,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1739022712] [2020-10-14 21:32:37,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:32:37,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:37,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:38,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:38,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:38,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:38,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 21:32:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:32:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-14 21:32:38,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:38,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:32:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:32:38,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-10-14 21:32:38,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:39,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:32:39,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:39,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:39,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:32:39,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:32:39,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:32:39,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:39,063 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:39,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:32:39,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:32:39,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:32:39,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:32:39,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:32:39,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-14 21:32:39,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:32:39,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-14 21:32:39,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:32:39,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:32:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:32:39,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:32:39,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-14 21:32:39,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:32:39,451 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:32:39,453 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1739022712] [2020-10-14 21:32:39,453 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:32:39,453 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:32:39,454 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085723727] [2020-10-14 21:32:39,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:32:39,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:32:39,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:32:39,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:32:39,458 INFO L87 Difference]: Start difference. First operand 4568 states and 6213 transitions. Second operand 7 states. [2020-10-14 21:33:20,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:33:20,066 INFO L93 Difference]: Finished difference Result 18423 states and 26836 transitions. [2020-10-14 21:33:20,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:33:20,070 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-14 21:33:20,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:33:20,157 INFO L225 Difference]: With dead ends: 18423 [2020-10-14 21:33:20,158 INFO L226 Difference]: Without dead ends: 13861 [2020-10-14 21:33:20,178 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:33:20,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13861 states. [2020-10-14 21:33:20,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13861 to 13812. [2020-10-14 21:33:20,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13812 states. [2020-10-14 21:33:20,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13812 states to 13812 states and 18589 transitions. [2020-10-14 21:33:20,651 INFO L78 Accepts]: Start accepts. Automaton has 13812 states and 18589 transitions. Word has length 137 [2020-10-14 21:33:20,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:33:20,655 INFO L479 AbstractCegarLoop]: Abstraction has 13812 states and 18589 transitions. [2020-10-14 21:33:20,655 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:33:20,656 INFO L276 IsEmpty]: Start isEmpty. Operand 13812 states and 18589 transitions. [2020-10-14 21:33:20,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 261 [2020-10-14 21:33:20,662 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:33:20,662 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:33:20,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:33:20,663 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:33:20,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:33:20,663 INFO L82 PathProgramCache]: Analyzing trace with hash -939292285, now seen corresponding path program 1 times [2020-10-14 21:33:20,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:33:20,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093665417] [2020-10-14 21:33:20,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:33:20,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:20,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:20,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:21,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:25,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:25,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-14 21:33:25,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:33:25,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-14 21:33:25,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:25,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-10-14 21:33:25,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 21:33:25,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:25,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:33:25,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:25,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:25,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:25,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:33:25,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:25,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:33:25,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:25,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:33:25,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:25,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:33:25,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:25,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:33:25,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:26,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:26,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:26,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-14 21:33:26,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:26,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-14 21:33:26,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:26,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:26,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:33:26,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:33:26,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-14 21:33:26,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:33:26,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-14 21:33:26,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:33:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:33:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:33:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-14 21:33:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:33:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 232 [2020-10-14 21:33:26,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:33:26,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:33:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:33:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:33:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-14 21:33:26,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:33:26,599 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 196 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:33:26,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093665417] [2020-10-14 21:33:26,602 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:33:26,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:33:26,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541275718] [2020-10-14 21:33:26,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:33:26,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:33:26,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:33:26,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:33:26,606 INFO L87 Difference]: Start difference. First operand 13812 states and 18589 transitions. Second operand 7 states. [2020-10-14 21:34:04,438 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:34:04,440 INFO L93 Difference]: Finished difference Result 38885 states and 55265 transitions. [2020-10-14 21:34:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:34:04,443 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 260 [2020-10-14 21:34:04,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:34:04,605 INFO L225 Difference]: With dead ends: 38885 [2020-10-14 21:34:04,606 INFO L226 Difference]: Without dead ends: 25882 [2020-10-14 21:34:04,650 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:34:04,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25882 states. [2020-10-14 21:34:05,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25882 to 25755. [2020-10-14 21:34:05,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25755 states. [2020-10-14 21:34:05,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25755 states to 25755 states and 36557 transitions. [2020-10-14 21:34:05,621 INFO L78 Accepts]: Start accepts. Automaton has 25755 states and 36557 transitions. Word has length 260 [2020-10-14 21:34:05,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:34:05,622 INFO L479 AbstractCegarLoop]: Abstraction has 25755 states and 36557 transitions. [2020-10-14 21:34:05,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:34:05,622 INFO L276 IsEmpty]: Start isEmpty. Operand 25755 states and 36557 transitions. [2020-10-14 21:34:05,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-14 21:34:05,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:34:05,631 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 21:34:05,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:34:05,632 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:34:05,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:34:05,633 INFO L82 PathProgramCache]: Analyzing trace with hash -469676884, now seen corresponding path program 1 times [2020-10-14 21:34:05,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:34:05,633 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970715402] [2020-10-14 21:34:05,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:34:05,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:05,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:06,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:08,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:09,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:09,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-14 21:34:09,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:34:09,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4224 [2020-10-14 21:34:09,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:09,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:34:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:34:09,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 213 [2020-10-14 21:34:09,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:10,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:34:10,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:10,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:10,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:10,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:34:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:34:10,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:10,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:34:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:34:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:10,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:34:10,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:10,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:10,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:10,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:10,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:34:10,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:34:10,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-14 21:34:10,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:10,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:34:10,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:10,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:34:10,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:10,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:34:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:10,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:10,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:10,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-14 21:34:10,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:10,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-14 21:34:10,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:10,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:34:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:34:10,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-14 21:34:10,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:34:10,920 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 176 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-14 21:34:10,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970715402] [2020-10-14 21:34:10,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:34:10,923 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:34:10,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744628076] [2020-10-14 21:34:10,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:34:10,926 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:34:10,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:34:10,927 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:34:10,927 INFO L87 Difference]: Start difference. First operand 25755 states and 36557 transitions. Second operand 7 states. [2020-10-14 21:34:45,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:34:45,255 INFO L93 Difference]: Finished difference Result 71408 states and 111062 transitions. [2020-10-14 21:34:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:34:45,260 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 265 [2020-10-14 21:34:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:34:45,449 INFO L225 Difference]: With dead ends: 71408 [2020-10-14 21:34:45,449 INFO L226 Difference]: Without dead ends: 46462 [2020-10-14 21:34:45,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:34:45,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46462 states. [2020-10-14 21:34:46,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46462 to 46262. [2020-10-14 21:34:46,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46262 states. [2020-10-14 21:34:46,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46262 states to 46262 states and 65278 transitions. [2020-10-14 21:34:46,733 INFO L78 Accepts]: Start accepts. Automaton has 46262 states and 65278 transitions. Word has length 265 [2020-10-14 21:34:46,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:34:46,734 INFO L479 AbstractCegarLoop]: Abstraction has 46262 states and 65278 transitions. [2020-10-14 21:34:46,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:34:46,735 INFO L276 IsEmpty]: Start isEmpty. Operand 46262 states and 65278 transitions. [2020-10-14 21:34:46,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 285 [2020-10-14 21:34:46,742 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:34:46,742 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:34:46,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:34:46,743 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:34:46,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:34:46,743 INFO L82 PathProgramCache]: Analyzing trace with hash 1498892202, now seen corresponding path program 1 times [2020-10-14 21:34:46,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:34:46,744 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [359971166] [2020-10-14 21:34:46,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:34:46,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:46,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:46,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:47,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:49,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:49,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-14 21:34:49,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:34:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2721 [2020-10-14 21:34:49,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:49,531 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:34:49,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 139 [2020-10-14 21:34:49,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 156 [2020-10-14 21:34:49,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:49,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:34:49,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:49,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:49,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:49,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:34:49,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:49,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:34:49,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:49,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:34:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:49,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:34:49,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:49,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:34:49,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:49,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:49,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:49,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-14 21:34:49,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:34:49,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-14 21:34:49,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:49,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:49,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:34:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:49,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 21:34:49,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:34:50,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-14 21:34:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:34:50,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:50,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:34:50,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:34:50,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 21:34:50,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:34:50,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-14 21:34:50,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:34:50,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:34:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:34:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:34:50,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:34:50,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:34:50,514 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 104 proven. 2 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2020-10-14 21:34:50,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [359971166] [2020-10-14 21:34:50,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:34:50,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:34:50,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811139805] [2020-10-14 21:34:50,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:34:50,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:34:50,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:34:50,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:34:50,518 INFO L87 Difference]: Start difference. First operand 46262 states and 65278 transitions. Second operand 5 states.