/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem17_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 04:07:51,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:07:51,594 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:07:51,645 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:07:51,646 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:07:51,656 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:07:51,658 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:07:51,662 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:07:51,665 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:07:51,668 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:07:51,669 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:07:51,670 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:07:51,671 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:07:51,674 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:07:51,676 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:07:51,678 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:07:51,679 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:07:51,680 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:07:51,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:07:51,692 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:07:51,695 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:07:51,696 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:07:51,697 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:07:51,698 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:07:51,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:07:51,711 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:07:51,712 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:07:51,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:07:51,714 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:07:51,716 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:07:51,717 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:07:51,717 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:07:51,718 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:07:51,719 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:07:51,720 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:07:51,720 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:07:51,721 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:07:51,721 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:07:51,721 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:07:51,722 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:07:51,724 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:07:51,725 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 04:07:51,768 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:07:51,769 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:07:51,771 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:07:51,771 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:07:51,772 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:07:51,772 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:07:51,772 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:07:51,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:07:51,773 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:07:51,773 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:07:51,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:07:51,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:07:51,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:07:51,775 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:07:51,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:07:51,775 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:07:51,775 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:07:51,775 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:07:51,776 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:07:51,776 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:07:51,776 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:07:51,776 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:07:51,776 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:07:51,777 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:07:51,777 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:07:51,777 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:07:51,777 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:07:51,777 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:07:51,778 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:07:51,778 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:07:52,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:07:52,173 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:07:52,182 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:07:52,184 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:07:52,184 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:07:52,185 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label52.c [2020-10-14 04:07:52,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/329cc32ec/fa22ec1af8214ad29e53f31458f0ccf4/FLAGe8b32efc6 [2020-10-14 04:07:53,040 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:07:53,041 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label52.c [2020-10-14 04:07:53,065 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/329cc32ec/fa22ec1af8214ad29e53f31458f0ccf4/FLAGe8b32efc6 [2020-10-14 04:07:53,121 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/329cc32ec/fa22ec1af8214ad29e53f31458f0ccf4 [2020-10-14 04:07:53,133 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:07:53,135 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:07:53,139 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:07:53,139 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:07:53,143 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:07:53,145 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:07:53" (1/1) ... [2020-10-14 04:07:53,149 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dd452c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:53, skipping insertion in model container [2020-10-14 04:07:53,150 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:07:53" (1/1) ... [2020-10-14 04:07:53,160 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:07:53,278 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:07:54,505 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:07:54,512 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:07:54,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:07:54,917 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:07:54,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54 WrapperNode [2020-10-14 04:07:54,920 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:07:54,921 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:07:54,921 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:07:54,921 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:07:54,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:54,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:55,013 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:55,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:55,123 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:55,161 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:55,191 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (1/1) ... [2020-10-14 04:07:55,220 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:07:55,220 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:07:55,221 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:07:55,221 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:07:55,222 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (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 04:07:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:07:55,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:07:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 04:07:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 04:07:55,282 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:07:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 04:07:55,282 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 04:07:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:07:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 04:07:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 04:07:55,283 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:07:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:07:55,284 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:08:02,273 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:08:02,274 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 04:08:02,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:08:02 BoogieIcfgContainer [2020-10-14 04:08:02,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:08:02,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:08:02,293 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:08:02,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:08:02,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:07:53" (1/3) ... [2020-10-14 04:08:02,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c5dd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:08:02, skipping insertion in model container [2020-10-14 04:08:02,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:07:54" (2/3) ... [2020-10-14 04:08:02,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40c5dd13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:08:02, skipping insertion in model container [2020-10-14 04:08:02,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:08:02" (3/3) ... [2020-10-14 04:08:02,301 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem17_label52.c [2020-10-14 04:08:02,314 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:08:02,328 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:08:02,347 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:08:02,380 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:08:02,380 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:08:02,380 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:08:02,380 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:08:02,380 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:08:02,381 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:08:02,381 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:08:02,381 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:08:02,422 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states. [2020-10-14 04:08:02,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-14 04:08:02,430 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:02,431 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:02,432 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:02,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:02,438 INFO L82 PathProgramCache]: Analyzing trace with hash 1725089009, now seen corresponding path program 1 times [2020-10-14 04:08:02,449 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:02,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1637295002] [2020-10-14 04:08:02,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:02,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:02,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:03,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:03,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-14 04:08:03,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:03,085 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 450 [2020-10-14 04:08:03,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:03,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 04:08:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 04:08:03,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-14 04:08:03,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 04:08:03,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:03,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-14 04:08:03,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:03,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:03,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:08:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:03,289 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 04:08:03,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1637295002] [2020-10-14 04:08:03,294 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:08:03,295 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 04:08:03,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333688401] [2020-10-14 04:08:03,304 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:08:03,304 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:03,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:08:03,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:08:03,329 INFO L87 Difference]: Start difference. First operand 603 states. Second operand 4 states. [2020-10-14 04:08:11,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:11,946 INFO L93 Difference]: Finished difference Result 1689 states and 3086 transitions. [2020-10-14 04:08:11,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:11,949 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-10-14 04:08:11,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:11,978 INFO L225 Difference]: With dead ends: 1689 [2020-10-14 04:08:11,978 INFO L226 Difference]: Without dead ends: 1009 [2020-10-14 04:08:11,990 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:12,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2020-10-14 04:08:12,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 991. [2020-10-14 04:08:12,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 991 states. [2020-10-14 04:08:12,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 991 states to 991 states and 1526 transitions. [2020-10-14 04:08:12,166 INFO L78 Accepts]: Start accepts. Automaton has 991 states and 1526 transitions. Word has length 12 [2020-10-14 04:08:12,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:12,167 INFO L479 AbstractCegarLoop]: Abstraction has 991 states and 1526 transitions. [2020-10-14 04:08:12,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:08:12,167 INFO L276 IsEmpty]: Start isEmpty. Operand 991 states and 1526 transitions. [2020-10-14 04:08:12,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-14 04:08:12,171 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:12,171 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-14 04:08:12,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:08:12,172 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:12,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:12,172 INFO L82 PathProgramCache]: Analyzing trace with hash 1211840220, now seen corresponding path program 1 times [2020-10-14 04:08:12,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:12,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [390232154] [2020-10-14 04:08:12,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:12,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:12,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:12,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:13,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:13,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-14 04:08:13,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 874 [2020-10-14 04:08:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:13,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-14 04:08:13,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:08:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 04:08:13,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:13,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:13,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:13,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:13,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:13,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:08:13,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:13,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:13,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:13,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:13,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:13,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:13,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:13,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-14 04:08:13,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:13,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-14 04:08:13,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:13,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-14 04:08:13,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:13,317 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:13,317 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [390232154] [2020-10-14 04:08:13,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:13,318 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:13,318 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724560775] [2020-10-14 04:08:13,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:13,320 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:13,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:13,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:13,321 INFO L87 Difference]: Start difference. First operand 991 states and 1526 transitions. Second operand 5 states. [2020-10-14 04:08:25,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:25,382 INFO L93 Difference]: Finished difference Result 2864 states and 4440 transitions. [2020-10-14 04:08:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:25,383 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 83 [2020-10-14 04:08:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:25,394 INFO L225 Difference]: With dead ends: 2864 [2020-10-14 04:08:25,394 INFO L226 Difference]: Without dead ends: 1879 [2020-10-14 04:08:25,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1879 states. [2020-10-14 04:08:25,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1879 to 1875. [2020-10-14 04:08:25,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1875 states. [2020-10-14 04:08:25,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1875 states to 1875 states and 2566 transitions. [2020-10-14 04:08:25,459 INFO L78 Accepts]: Start accepts. Automaton has 1875 states and 2566 transitions. Word has length 83 [2020-10-14 04:08:25,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:25,460 INFO L479 AbstractCegarLoop]: Abstraction has 1875 states and 2566 transitions. [2020-10-14 04:08:25,460 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:25,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1875 states and 2566 transitions. [2020-10-14 04:08:25,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-14 04:08:25,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:25,464 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:25,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 04:08:25,464 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:25,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1655733848, now seen corresponding path program 1 times [2020-10-14 04:08:25,465 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:25,465 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443399486] [2020-10-14 04:08:25,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:25,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:25,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:25,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-14 04:08:25,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:25,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-14 04:08:25,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:25,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:25,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:08:25,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:08:25,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:25,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:25,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:25,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:25,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:25,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:25,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:25,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:08:25,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:25,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:25,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:25,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:25,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:25,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:25,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:26,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:08:26,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-14 04:08:26,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:26,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:08:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:26,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:26,075 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443399486] [2020-10-14 04:08:26,075 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:26,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:26,076 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551998998] [2020-10-14 04:08:26,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:26,077 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:26,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:26,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:26,078 INFO L87 Difference]: Start difference. First operand 1875 states and 2566 transitions. Second operand 5 states. [2020-10-14 04:08:37,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:37,980 INFO L93 Difference]: Finished difference Result 3755 states and 5473 transitions. [2020-10-14 04:08:37,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:37,982 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 86 [2020-10-14 04:08:37,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:38,002 INFO L225 Difference]: With dead ends: 3755 [2020-10-14 04:08:38,002 INFO L226 Difference]: Without dead ends: 2772 [2020-10-14 04:08:38,006 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:38,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2772 states. [2020-10-14 04:08:38,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2772 to 2766. [2020-10-14 04:08:38,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2766 states. [2020-10-14 04:08:38,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2766 states to 2766 states and 3638 transitions. [2020-10-14 04:08:38,086 INFO L78 Accepts]: Start accepts. Automaton has 2766 states and 3638 transitions. Word has length 86 [2020-10-14 04:08:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:38,087 INFO L479 AbstractCegarLoop]: Abstraction has 2766 states and 3638 transitions. [2020-10-14 04:08:38,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 2766 states and 3638 transitions. [2020-10-14 04:08:38,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-14 04:08:38,097 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:38,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:38,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 04:08:38,102 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:38,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:38,103 INFO L82 PathProgramCache]: Analyzing trace with hash -2088808244, now seen corresponding path program 1 times [2020-10-14 04:08:38,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:38,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [403464714] [2020-10-14 04:08:38,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:38,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:38,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:38,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 04:08:39,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:39,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-14 04:08:39,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 04:08:39,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:08:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-14 04:08:39,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:39,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:39,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:39,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:39,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:08:39,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:39,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:39,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:39,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:39,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:39,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:39,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:39,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:39,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 04:08:39,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:39,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-14 04:08:39,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:39,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:39,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:39,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:08:39,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-14 04:08:39,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:39,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [403464714] [2020-10-14 04:08:39,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:39,622 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:39,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601007270] [2020-10-14 04:08:39,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:39,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:39,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:39,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:39,627 INFO L87 Difference]: Start difference. First operand 2766 states and 3638 transitions. Second operand 5 states. [2020-10-14 04:08:52,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:08:52,120 INFO L93 Difference]: Finished difference Result 5550 states and 7661 transitions. [2020-10-14 04:08:52,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:08:52,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 91 [2020-10-14 04:08:52,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:08:52,141 INFO L225 Difference]: With dead ends: 5550 [2020-10-14 04:08:52,141 INFO L226 Difference]: Without dead ends: 3676 [2020-10-14 04:08:52,147 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:08:52,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3676 states. [2020-10-14 04:08:52,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3676 to 3663. [2020-10-14 04:08:52,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3663 states. [2020-10-14 04:08:52,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3663 states to 3663 states and 4829 transitions. [2020-10-14 04:08:52,244 INFO L78 Accepts]: Start accepts. Automaton has 3663 states and 4829 transitions. Word has length 91 [2020-10-14 04:08:52,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:08:52,244 INFO L479 AbstractCegarLoop]: Abstraction has 3663 states and 4829 transitions. [2020-10-14 04:08:52,245 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:08:52,245 INFO L276 IsEmpty]: Start isEmpty. Operand 3663 states and 4829 transitions. [2020-10-14 04:08:52,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-14 04:08:52,247 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:08:52,247 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:08:52,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 04:08:52,247 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:08:52,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:08:52,248 INFO L82 PathProgramCache]: Analyzing trace with hash 618096770, now seen corresponding path program 1 times [2020-10-14 04:08:52,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:08:52,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2029032465] [2020-10-14 04:08:52,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:08:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:52,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:52,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 04:08:53,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:08:53,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 909 [2020-10-14 04:08:53,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:08:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-14 04:08:53,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:08:53,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:08:53,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:08:53,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:08:53,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:08:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:08:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:08:53,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:08:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:08:53,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:08:53,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-14 04:08:53,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:08:53,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-14 04:08:53,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:08:53,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:08:53,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:08:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:08:53,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-14 04:08:53,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:08:53,551 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:08:53,551 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2029032465] [2020-10-14 04:08:53,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:08:53,556 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:08:53,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720606682] [2020-10-14 04:08:53,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:08:53,562 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:08:53,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:08:53,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:08:53,563 INFO L87 Difference]: Start difference. First operand 3663 states and 4829 transitions. Second operand 5 states. [2020-10-14 04:09:11,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:11,895 INFO L93 Difference]: Finished difference Result 10890 states and 14591 transitions. [2020-10-14 04:09:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:09:11,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-14 04:09:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:11,941 INFO L225 Difference]: With dead ends: 10890 [2020-10-14 04:09:11,942 INFO L226 Difference]: Without dead ends: 7233 [2020-10-14 04:09:11,952 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:09:11,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7233 states. [2020-10-14 04:09:12,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7233 to 7211. [2020-10-14 04:09:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7211 states. [2020-10-14 04:09:12,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7211 states to 7211 states and 9393 transitions. [2020-10-14 04:09:12,145 INFO L78 Accepts]: Start accepts. Automaton has 7211 states and 9393 transitions. Word has length 114 [2020-10-14 04:09:12,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:12,149 INFO L479 AbstractCegarLoop]: Abstraction has 7211 states and 9393 transitions. [2020-10-14 04:09:12,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:09:12,149 INFO L276 IsEmpty]: Start isEmpty. Operand 7211 states and 9393 transitions. [2020-10-14 04:09:12,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-10-14 04:09:12,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:12,153 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:09:12,153 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 04:09:12,153 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:12,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:12,154 INFO L82 PathProgramCache]: Analyzing trace with hash -575410559, now seen corresponding path program 1 times [2020-10-14 04:09:12,154 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:12,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345532429] [2020-10-14 04:09:12,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:12,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:12,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:12,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:12,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:13,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:16,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:17,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:17,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-14 04:09:17,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:09:17,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-14 04:09:17,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:17,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 84 [2020-10-14 04:09:17,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:17,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:17,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:17,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:17,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:17,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:17,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:17,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:17,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:09:17,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:17,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:17,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:17,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:17,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:17,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:17,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:17,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-14 04:09:17,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:17,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-14 04:09:17,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:17,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:17,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:17,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-10-14 04:09:17,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:17,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-14 04:09:17,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:17,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:17,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:09:17,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:17,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 04:09:17,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:17,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:17,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:09:17,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:17,725 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:09:17,726 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345532429] [2020-10-14 04:09:17,727 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:17,728 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:17,728 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1486540350] [2020-10-14 04:09:17,729 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:17,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:17,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:17,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:17,731 INFO L87 Difference]: Start difference. First operand 7211 states and 9393 transitions. Second operand 7 states. [2020-10-14 04:09:29,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:29,710 INFO L93 Difference]: Finished difference Result 18547 states and 24995 transitions. [2020-10-14 04:09:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:09:29,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 159 [2020-10-14 04:09:29,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:29,756 INFO L225 Difference]: With dead ends: 18547 [2020-10-14 04:09:29,757 INFO L226 Difference]: Without dead ends: 7800 [2020-10-14 04:09:29,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:09:29,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7800 states. [2020-10-14 04:09:29,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7800 to 6479. [2020-10-14 04:09:29,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6479 states. [2020-10-14 04:09:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6479 states to 6479 states and 8041 transitions. [2020-10-14 04:09:29,952 INFO L78 Accepts]: Start accepts. Automaton has 6479 states and 8041 transitions. Word has length 159 [2020-10-14 04:09:29,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:29,952 INFO L479 AbstractCegarLoop]: Abstraction has 6479 states and 8041 transitions. [2020-10-14 04:09:29,952 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:29,952 INFO L276 IsEmpty]: Start isEmpty. Operand 6479 states and 8041 transitions. [2020-10-14 04:09:29,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-14 04:09:29,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:29,955 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 04:09:29,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 04:09:29,956 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:29,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:29,956 INFO L82 PathProgramCache]: Analyzing trace with hash -380342419, now seen corresponding path program 1 times [2020-10-14 04:09:29,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:29,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659446664] [2020-10-14 04:09:29,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:30,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:30,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:30,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:30,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-14 04:09:30,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 04:09:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 860 [2020-10-14 04:09:30,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:30,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:09:30,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 04:09:30,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:30,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:30,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:30,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:30,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:30,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:30,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:30,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:09:30,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:30,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:30,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:30,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:30,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:31,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:31,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:31,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:31,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:31,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:31,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:31,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-14 04:09:31,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:31,172 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:31,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:09:31,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:31,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:31,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:31,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:31,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:31,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 04:09:31,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:31,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-14 04:09:31,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:31,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:31,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:09:31,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 04:09:31,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:31,409 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 80 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 04:09:31,409 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659446664] [2020-10-14 04:09:31,410 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:31,410 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:09:31,410 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019669416] [2020-10-14 04:09:31,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:09:31,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:31,411 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:09:31,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:09:31,412 INFO L87 Difference]: Start difference. First operand 6479 states and 8041 transitions. Second operand 7 states. [2020-10-14 04:09:41,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:09:41,302 INFO L93 Difference]: Finished difference Result 18189 states and 23013 transitions. [2020-10-14 04:09:41,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 04:09:41,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-10-14 04:09:41,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:09:41,359 INFO L225 Difference]: With dead ends: 18189 [2020-10-14 04:09:41,359 INFO L226 Difference]: Without dead ends: 11716 [2020-10-14 04:09:41,378 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:09:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11716 states. [2020-10-14 04:09:41,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11716 to 11708. [2020-10-14 04:09:41,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11708 states. [2020-10-14 04:09:41,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11708 states to 11708 states and 14206 transitions. [2020-10-14 04:09:41,664 INFO L78 Accepts]: Start accepts. Automaton has 11708 states and 14206 transitions. Word has length 172 [2020-10-14 04:09:41,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:09:41,665 INFO L479 AbstractCegarLoop]: Abstraction has 11708 states and 14206 transitions. [2020-10-14 04:09:41,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:09:41,665 INFO L276 IsEmpty]: Start isEmpty. Operand 11708 states and 14206 transitions. [2020-10-14 04:09:41,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-14 04:09:41,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:09:41,668 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:09:41,668 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 04:09:41,668 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:09:41,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:09:41,669 INFO L82 PathProgramCache]: Analyzing trace with hash -736523095, now seen corresponding path program 1 times [2020-10-14 04:09:41,669 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:09:41,670 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [880935697] [2020-10-14 04:09:41,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:09:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:42,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:43,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:43,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-10-14 04:09:43,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:09:43,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2262 [2020-10-14 04:09:43,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:43,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:43,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:09:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-14 04:09:43,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:09:43,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:09:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:09:44,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:44,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:09:44,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:44,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:44,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:09:44,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:44,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-14 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:09:44,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:44,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:09:44,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:09:44,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:09:44,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:09:44,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:09:44,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 04:09:44,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:09:44,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-14 04:09:44,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:09:44,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:09:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:09:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:09:44,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 04:09:44,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:09:44,311 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 04:09:44,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [880935697] [2020-10-14 04:09:44,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:09:44,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:09:44,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887340997] [2020-10-14 04:09:44,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:09:44,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:09:44,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:09:44,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:09:44,314 INFO L87 Difference]: Start difference. First operand 11708 states and 14206 transitions. Second operand 5 states. [2020-10-14 04:10:02,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:02,850 INFO L93 Difference]: Finished difference Result 29163 states and 35901 transitions. [2020-10-14 04:10:02,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:02,857 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 174 [2020-10-14 04:10:02,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:02,910 INFO L225 Difference]: With dead ends: 29163 [2020-10-14 04:10:02,911 INFO L226 Difference]: Without dead ends: 17461 [2020-10-14 04:10:02,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:02,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17461 states. [2020-10-14 04:10:03,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17461 to 16569. [2020-10-14 04:10:03,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16569 states. [2020-10-14 04:10:03,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16569 states to 16569 states and 20381 transitions. [2020-10-14 04:10:03,476 INFO L78 Accepts]: Start accepts. Automaton has 16569 states and 20381 transitions. Word has length 174 [2020-10-14 04:10:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:03,476 INFO L479 AbstractCegarLoop]: Abstraction has 16569 states and 20381 transitions. [2020-10-14 04:10:03,476 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 16569 states and 20381 transitions. [2020-10-14 04:10:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-14 04:10:03,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:03,479 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 04:10:03,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 04:10:03,480 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:03,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:03,480 INFO L82 PathProgramCache]: Analyzing trace with hash 372584409, now seen corresponding path program 1 times [2020-10-14 04:10:03,481 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:03,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [826122120] [2020-10-14 04:10:03,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:03,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:03,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:03,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:04,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-14 04:10:05,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:05,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1895 [2020-10-14 04:10:05,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 04:10:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:10:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:05,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:10:05,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:05,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:05,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-14 04:10:05,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:05,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:05,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:05,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:05,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:05,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:05,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:10:05,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-14 04:10:05,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:05,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:05,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:10:05,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:05,861 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 11 proven. 2 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2020-10-14 04:10:05,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [826122120] [2020-10-14 04:10:05,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:05,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:10:05,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614671548] [2020-10-14 04:10:05,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:10:05,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:05,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:10:05,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:10:05,868 INFO L87 Difference]: Start difference. First operand 16569 states and 20381 transitions. Second operand 5 states. [2020-10-14 04:10:21,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:21,882 INFO L93 Difference]: Finished difference Result 33571 states and 41239 transitions. [2020-10-14 04:10:21,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:10:21,886 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 182 [2020-10-14 04:10:21,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:21,943 INFO L225 Difference]: With dead ends: 33571 [2020-10-14 04:10:21,943 INFO L226 Difference]: Without dead ends: 17008 [2020-10-14 04:10:21,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:10:21,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17008 states. [2020-10-14 04:10:22,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17008 to 16571. [2020-10-14 04:10:22,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16571 states. [2020-10-14 04:10:22,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16571 states to 16571 states and 20339 transitions. [2020-10-14 04:10:22,374 INFO L78 Accepts]: Start accepts. Automaton has 16571 states and 20339 transitions. Word has length 182 [2020-10-14 04:10:22,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:22,375 INFO L479 AbstractCegarLoop]: Abstraction has 16571 states and 20339 transitions. [2020-10-14 04:10:22,375 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:10:22,376 INFO L276 IsEmpty]: Start isEmpty. Operand 16571 states and 20339 transitions. [2020-10-14 04:10:22,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-14 04:10:22,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:22,383 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:10:22,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 04:10:22,384 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:22,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:22,384 INFO L82 PathProgramCache]: Analyzing trace with hash -655493683, now seen corresponding path program 1 times [2020-10-14 04:10:22,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:22,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699828701] [2020-10-14 04:10:22,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:22,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:22,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:23,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:23,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:27,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:27,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-14 04:10:27,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:27,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-14 04:10:27,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:27,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 182 [2020-10-14 04:10:27,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-14 04:10:27,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:27,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:27,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:27,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:27,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:27,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:27,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:27,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:27,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:27,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:27,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:27,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:27,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:27,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:27,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-14 04:10:27,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:27,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:27,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:27,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:27,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:27,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:27,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:27,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:27,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 04:10:27,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:27,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-14 04:10:27,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:27,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:27,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 04:10:27,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:27,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-14 04:10:28,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:28,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:28,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:28,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:28,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:28,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-10-14 04:10:28,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:28,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:28,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:28,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-14 04:10:28,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:28,424 INFO L134 CoverageAnalysis]: Checked inductivity of 268 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-14 04:10:28,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699828701] [2020-10-14 04:10:28,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:28,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:28,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263900512] [2020-10-14 04:10:28,427 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:28,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:28,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:28,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:28,428 INFO L87 Difference]: Start difference. First operand 16571 states and 20339 transitions. Second operand 7 states. [2020-10-14 04:10:48,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:10:48,303 INFO L93 Difference]: Finished difference Result 38250 states and 47601 transitions. [2020-10-14 04:10:48,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:10:48,306 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 270 [2020-10-14 04:10:48,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:10:48,365 INFO L225 Difference]: With dead ends: 38250 [2020-10-14 04:10:48,366 INFO L226 Difference]: Without dead ends: 21684 [2020-10-14 04:10:48,404 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 04:10:48,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21684 states. [2020-10-14 04:10:48,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21684 to 20768. [2020-10-14 04:10:48,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20768 states. [2020-10-14 04:10:48,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20768 states to 20768 states and 25452 transitions. [2020-10-14 04:10:48,867 INFO L78 Accepts]: Start accepts. Automaton has 20768 states and 25452 transitions. Word has length 270 [2020-10-14 04:10:48,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:10:48,868 INFO L479 AbstractCegarLoop]: Abstraction has 20768 states and 25452 transitions. [2020-10-14 04:10:48,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:10:48,868 INFO L276 IsEmpty]: Start isEmpty. Operand 20768 states and 25452 transitions. [2020-10-14 04:10:48,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 04:10:48,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:10:48,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:10:48,875 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 04:10:48,875 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:10:48,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:10:48,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1486248114, now seen corresponding path program 1 times [2020-10-14 04:10:48,876 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:10:48,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442439277] [2020-10-14 04:10:48,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:10:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:49,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:49,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:52,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:52,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-14 04:10:52,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 04:10:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3892 [2020-10-14 04:10:52,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:52,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-14 04:10:52,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-14 04:10:52,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:52,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:10:52,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:52,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:52,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:53,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:10:53,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:53,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 04:10:53,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:53,001 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:53,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:53,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:53,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:10:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:53,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:53,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:53,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:10:53,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:53,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-14 04:10:53,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:53,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:53,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:10:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:10:53,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-14 04:10:53,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:53,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:10:53,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:53,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:53,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:53,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-14 04:10:53,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:53,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-14 04:10:53,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:53,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:10:53,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 04:10:53,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-14 04:10:53,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:53,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2020-10-14 04:10:53,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:10:53,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:10:53,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:10:53,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:10:53,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:10:53,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-14 04:10:53,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:10:53,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:10:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:10:53,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 86 [2020-10-14 04:10:53,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:10:53,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:10:54,130 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 103 proven. 87 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-14 04:10:54,130 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442439277] [2020-10-14 04:10:54,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:10:54,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 04:10:54,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859712432] [2020-10-14 04:10:54,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 04:10:54,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:10:54,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 04:10:54,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 04:10:54,133 INFO L87 Difference]: Start difference. First operand 20768 states and 25452 transitions. Second operand 7 states. [2020-10-14 04:11:11,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:11,380 INFO L93 Difference]: Finished difference Result 45214 states and 55391 transitions. [2020-10-14 04:11:11,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 04:11:11,385 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 296 [2020-10-14 04:11:11,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:11,476 INFO L225 Difference]: With dead ends: 45214 [2020-10-14 04:11:11,477 INFO L226 Difference]: Without dead ends: 24452 [2020-10-14 04:11:11,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-14 04:11:11,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24452 states. [2020-10-14 04:11:12,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24452 to 24407. [2020-10-14 04:11:12,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24407 states. [2020-10-14 04:11:12,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24407 states to 24407 states and 29740 transitions. [2020-10-14 04:11:12,103 INFO L78 Accepts]: Start accepts. Automaton has 24407 states and 29740 transitions. Word has length 296 [2020-10-14 04:11:12,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:12,104 INFO L479 AbstractCegarLoop]: Abstraction has 24407 states and 29740 transitions. [2020-10-14 04:11:12,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 04:11:12,105 INFO L276 IsEmpty]: Start isEmpty. Operand 24407 states and 29740 transitions. [2020-10-14 04:11:12,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2020-10-14 04:11:12,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:12,116 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:11:12,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-14 04:11:12,117 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:12,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:12,117 INFO L82 PathProgramCache]: Analyzing trace with hash -1676742057, now seen corresponding path program 1 times [2020-10-14 04:11:12,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:12,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443170393] [2020-10-14 04:11:12,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:12,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:12,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:12,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:12,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 333 [2020-10-14 04:11:17,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 04:11:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5103 [2020-10-14 04:11:17,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:17,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 04:11:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 321 [2020-10-14 04:11:17,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-14 04:11:17,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-14 04:11:17,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:11:17,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:17,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:17,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:11:17,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:17,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 04:11:17,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:17,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:17,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:17,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:17,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:17,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 04:11:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:17,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-14 04:11:17,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:17,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 04:11:17,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:17,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:17,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:17,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:17,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:17,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-14 04:11:17,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:17,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-14 04:11:17,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:17,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-14 04:11:17,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:17,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:11:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:17,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:11:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:17,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-14 04:11:17,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:17,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:11:17,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:11:17,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-14 04:11:17,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:11:17,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-14 04:11:17,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:11:17,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:11:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:11:17,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-14 04:11:17,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:11:18,382 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-14 04:11:18,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443170393] [2020-10-14 04:11:18,383 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 04:11:18,383 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 04:11:18,384 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2132221858] [2020-10-14 04:11:18,384 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 04:11:18,385 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:11:18,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 04:11:18,385 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 04:11:18,385 INFO L87 Difference]: Start difference. First operand 24407 states and 29740 transitions. Second operand 5 states. [2020-10-14 04:11:38,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:11:38,123 INFO L93 Difference]: Finished difference Result 53655 states and 66082 transitions. [2020-10-14 04:11:38,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 04:11:38,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 319 [2020-10-14 04:11:38,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:11:38,265 INFO L225 Difference]: With dead ends: 53655 [2020-10-14 04:11:38,266 INFO L226 Difference]: Without dead ends: 29254 [2020-10-14 04:11:38,325 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 04:11:38,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29254 states. [2020-10-14 04:11:38,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29254 to 28342. [2020-10-14 04:11:38,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28342 states. [2020-10-14 04:11:39,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28342 states to 28342 states and 34627 transitions. [2020-10-14 04:11:39,051 INFO L78 Accepts]: Start accepts. Automaton has 28342 states and 34627 transitions. Word has length 319 [2020-10-14 04:11:39,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:11:39,052 INFO L479 AbstractCegarLoop]: Abstraction has 28342 states and 34627 transitions. [2020-10-14 04:11:39,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 04:11:39,053 INFO L276 IsEmpty]: Start isEmpty. Operand 28342 states and 34627 transitions. [2020-10-14 04:11:39,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2020-10-14 04:11:39,063 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:11:39,064 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:11:39,064 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-14 04:11:39,065 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:11:39,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:11:39,065 INFO L82 PathProgramCache]: Analyzing trace with hash 1972389977, now seen corresponding path program 1 times [2020-10-14 04:11:39,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:11:39,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1025489] [2020-10-14 04:11:39,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:11:39,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:11:39,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking...