/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/Problem12_label01.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 02:41:45,187 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 02:41:45,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 02:41:45,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 02:41:45,232 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 02:41:45,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 02:41:45,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 02:41:45,245 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 02:41:45,247 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 02:41:45,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 02:41:45,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 02:41:45,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 02:41:45,252 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 02:41:45,255 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 02:41:45,257 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 02:41:45,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 02:41:45,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 02:41:45,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 02:41:45,262 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 02:41:45,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 02:41:45,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 02:41:45,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 02:41:45,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 02:41:45,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 02:41:45,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 02:41:45,290 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 02:41:45,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 02:41:45,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 02:41:45,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 02:41:45,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 02:41:45,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 02:41:45,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 02:41:45,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 02:41:45,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 02:41:45,302 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 02:41:45,302 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 02:41:45,303 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 02:41:45,303 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 02:41:45,303 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 02:41:45,304 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 02:41:45,305 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 02:41:45,306 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 02:41:45,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 02:41:45,345 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 02:41:45,347 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 02:41:45,348 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 02:41:45,348 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 02:41:45,348 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 02:41:45,348 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 02:41:45,349 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 02:41:45,349 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 02:41:45,349 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 02:41:45,350 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 02:41:45,350 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 02:41:45,350 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 02:41:45,351 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 02:41:45,351 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 02:41:45,351 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 02:41:45,351 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 02:41:45,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 02:41:45,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 02:41:45,352 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 02:41:45,352 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 02:41:45,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 02:41:45,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 02:41:45,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 02:41:45,353 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 02:41:45,353 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 02:41:45,354 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 02:41:45,354 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 02:41:45,354 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 02:41:45,354 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 02:41:45,679 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 02:41:45,694 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 02:41:45,700 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 02:41:45,702 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 02:41:45,703 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 02:41:45,703 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-14 02:41:45,759 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97de4f73e/9e4f60a134334f3f8596bb35f9490e8d/FLAG1b991d62e [2020-10-14 02:41:46,598 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 02:41:46,599 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label01.c [2020-10-14 02:41:46,632 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97de4f73e/9e4f60a134334f3f8596bb35f9490e8d/FLAG1b991d62e [2020-10-14 02:41:47,113 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/97de4f73e/9e4f60a134334f3f8596bb35f9490e8d [2020-10-14 02:41:47,123 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 02:41:47,125 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 02:41:47,126 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 02:41:47,126 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 02:41:47,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 02:41:47,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:41:47" (1/1) ... [2020-10-14 02:41:47,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50be01d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:47, skipping insertion in model container [2020-10-14 02:41:47,136 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 02:41:47" (1/1) ... [2020-10-14 02:41:47,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 02:41:47,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 02:41:48,685 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:41:48,694 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 02:41:49,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 02:41:49,337 INFO L208 MainTranslator]: Completed translation [2020-10-14 02:41:49,338 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49 WrapperNode [2020-10-14 02:41:49,338 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 02:41:49,339 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 02:41:49,339 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 02:41:49,340 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 02:41:49,354 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,356 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,410 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,410 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,507 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,532 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (1/1) ... [2020-10-14 02:41:49,604 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 02:41:49,605 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 02:41:49,605 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 02:41:49,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 02:41:49,606 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (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 02:41:49,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 02:41:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 02:41:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 02:41:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 02:41:49,682 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 02:41:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 02:41:49,683 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 02:41:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 02:41:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 02:41:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 02:41:49,684 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 02:41:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 02:41:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 02:41:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 02:41:49,685 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 02:41:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 02:41:49,686 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 02:41:54,974 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 02:41:54,974 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 02:41:54,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:41:54 BoogieIcfgContainer [2020-10-14 02:41:54,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 02:41:54,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 02:41:54,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 02:41:55,006 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 02:41:55,007 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 02:41:47" (1/3) ... [2020-10-14 02:41:55,008 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60444d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:41:55, skipping insertion in model container [2020-10-14 02:41:55,010 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 02:41:49" (2/3) ... [2020-10-14 02:41:55,011 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60444d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 02:41:55, skipping insertion in model container [2020-10-14 02:41:55,011 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 02:41:54" (3/3) ... [2020-10-14 02:41:55,023 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label01.c [2020-10-14 02:41:55,038 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 02:41:55,058 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 02:41:55,085 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 02:41:55,134 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 02:41:55,134 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 02:41:55,135 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 02:41:55,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 02:41:55,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 02:41:55,135 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 02:41:55,135 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 02:41:55,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 02:41:55,199 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 02:41:55,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-14 02:41:55,217 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:41:55,219 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:41:55,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:41:55,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:41:55,231 INFO L82 PathProgramCache]: Analyzing trace with hash 891941962, now seen corresponding path program 1 times [2020-10-14 02:41:55,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:41:55,245 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545028967] [2020-10-14 02:41:55,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:41:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:55,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:55,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:55,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-14 02:41:55,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:55,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-14 02:41:55,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:55,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:41:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:41:55,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-14 02:41:55,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 02:41:56,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:41:56,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:41:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:41:56,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:41:56,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:41:56,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:41:56,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-14 02:41:56,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:41:56,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:41:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:41:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:41:56,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:41:56,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:41:56,184 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 02:41:56,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545028967] [2020-10-14 02:41:56,188 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:41:56,189 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 02:41:56,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839754838] [2020-10-14 02:41:56,197 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 02:41:56,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:41:56,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 02:41:56,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 02:41:56,218 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 02:42:04,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:04,609 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 02:42:04,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:04,611 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-10-14 02:42:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:04,654 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 02:42:04,655 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 02:42:04,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:04,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 02:42:04,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 02:42:04,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 02:42:04,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 02:42:04,874 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 53 [2020-10-14 02:42:04,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:04,875 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 02:42:04,875 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 02:42:04,875 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 02:42:04,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-14 02:42:04,881 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:04,881 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:04,882 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 02:42:04,882 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:04,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:04,883 INFO L82 PathProgramCache]: Analyzing trace with hash 1072495395, now seen corresponding path program 1 times [2020-10-14 02:42:04,883 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:04,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744603672] [2020-10-14 02:42:04,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:04,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:04,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:05,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:05,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:05,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-14 02:42:05,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:05,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-14 02:42:05,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:05,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 02:42:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 02:42:05,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:05,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:05,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:05,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:05,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:05,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:05,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:05,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:05,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:05,373 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:05,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:05,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:05,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:05,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:05,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:05,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:05,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:42:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-14 02:42:05,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:05,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:05,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 02:42:05,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:05,532 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:05,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744603672] [2020-10-14 02:42:05,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:05,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:05,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169782695] [2020-10-14 02:42:05,536 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:05,536 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:05,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:05,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:05,537 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 5 states. [2020-10-14 02:42:14,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:14,673 INFO L93 Difference]: Finished difference Result 4680 states and 7660 transitions. [2020-10-14 02:42:14,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:14,675 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-10-14 02:42:14,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:14,693 INFO L225 Difference]: With dead ends: 4680 [2020-10-14 02:42:14,694 INFO L226 Difference]: Without dead ends: 3133 [2020-10-14 02:42:14,698 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 02:42:14,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3133 states. [2020-10-14 02:42:14,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3133 to 3119. [2020-10-14 02:42:14,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3119 states. [2020-10-14 02:42:14,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3119 states to 3119 states and 4785 transitions. [2020-10-14 02:42:14,792 INFO L78 Accepts]: Start accepts. Automaton has 3119 states and 4785 transitions. Word has length 128 [2020-10-14 02:42:14,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:14,794 INFO L479 AbstractCegarLoop]: Abstraction has 3119 states and 4785 transitions. [2020-10-14 02:42:14,794 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:14,794 INFO L276 IsEmpty]: Start isEmpty. Operand 3119 states and 4785 transitions. [2020-10-14 02:42:14,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 02:42:14,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:14,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:14,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 02:42:14,799 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:14,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:14,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1960019490, now seen corresponding path program 1 times [2020-10-14 02:42:14,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:14,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1554035891] [2020-10-14 02:42:14,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:14,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:14,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:15,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:15,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:15,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:15,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 02:42:15,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:15,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1007 [2020-10-14 02:42:15,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:15,846 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-14 02:42:15,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 02:42:15,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:15,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:15,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:15,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:15,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:15,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:15,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:15,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:15,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:15,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:15,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:15,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:15,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:16,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:16,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 02:42:16,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:16,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-14 02:42:16,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:16,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:16,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 02:42:16,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:16,114 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:16,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1554035891] [2020-10-14 02:42:16,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:16,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:16,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188251781] [2020-10-14 02:42:16,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:16,118 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:16,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:16,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:16,119 INFO L87 Difference]: Start difference. First operand 3119 states and 4785 transitions. Second operand 5 states. [2020-10-14 02:42:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:26,275 INFO L93 Difference]: Finished difference Result 7807 states and 12431 transitions. [2020-10-14 02:42:26,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:26,279 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 131 [2020-10-14 02:42:26,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:26,304 INFO L225 Difference]: With dead ends: 7807 [2020-10-14 02:42:26,304 INFO L226 Difference]: Without dead ends: 4694 [2020-10-14 02:42:26,311 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 02:42:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2020-10-14 02:42:26,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4686. [2020-10-14 02:42:26,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4686 states. [2020-10-14 02:42:26,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4686 states to 4686 states and 6788 transitions. [2020-10-14 02:42:26,433 INFO L78 Accepts]: Start accepts. Automaton has 4686 states and 6788 transitions. Word has length 131 [2020-10-14 02:42:26,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:26,434 INFO L479 AbstractCegarLoop]: Abstraction has 4686 states and 6788 transitions. [2020-10-14 02:42:26,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:26,435 INFO L276 IsEmpty]: Start isEmpty. Operand 4686 states and 6788 transitions. [2020-10-14 02:42:26,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-14 02:42:26,438 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:26,438 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:26,438 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 02:42:26,438 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:26,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:26,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1199658987, now seen corresponding path program 1 times [2020-10-14 02:42:26,439 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:26,440 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [767117698] [2020-10-14 02:42:26,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:26,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:27,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:27,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:27,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-10-14 02:42:27,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 02:42:27,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 890 [2020-10-14 02:42:27,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:27,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:27,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-14 02:42:27,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 02:42:27,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:27,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:27,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:27,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:27,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:27,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:27,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:42:27,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:27,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:27,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:27,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:27,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:27,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:27,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:27,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:27,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:27,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 02:42:27,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:27,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-14 02:42:27,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:27,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:27,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:27,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-14 02:42:27,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:27,652 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:27,653 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [767117698] [2020-10-14 02:42:27,654 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:27,654 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:27,654 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293014877] [2020-10-14 02:42:27,656 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:27,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:27,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:27,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:27,658 INFO L87 Difference]: Start difference. First operand 4686 states and 6788 transitions. Second operand 5 states. [2020-10-14 02:42:38,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:38,890 INFO L93 Difference]: Finished difference Result 14039 states and 20766 transitions. [2020-10-14 02:42:38,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:38,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-14 02:42:38,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:38,937 INFO L225 Difference]: With dead ends: 14039 [2020-10-14 02:42:38,937 INFO L226 Difference]: Without dead ends: 9359 [2020-10-14 02:42:38,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 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 02:42:38,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9359 states. [2020-10-14 02:42:39,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9359 to 9347. [2020-10-14 02:42:39,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9347 states. [2020-10-14 02:42:39,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9347 states to 9347 states and 12737 transitions. [2020-10-14 02:42:39,177 INFO L78 Accepts]: Start accepts. Automaton has 9347 states and 12737 transitions. Word has length 132 [2020-10-14 02:42:39,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:39,177 INFO L479 AbstractCegarLoop]: Abstraction has 9347 states and 12737 transitions. [2020-10-14 02:42:39,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:39,178 INFO L276 IsEmpty]: Start isEmpty. Operand 9347 states and 12737 transitions. [2020-10-14 02:42:39,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-10-14 02:42:39,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:39,183 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:42:39,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 02:42:39,184 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:39,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:39,184 INFO L82 PathProgramCache]: Analyzing trace with hash -1849303302, now seen corresponding path program 1 times [2020-10-14 02:42:39,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:39,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1536418305] [2020-10-14 02:42:39,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:39,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:39,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:39,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:39,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:42:39,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 02:42:39,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 749 [2020-10-14 02:42:39,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:39,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-14 02:42:39,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-14 02:42:39,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:40,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:40,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:40,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:40,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:40,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:40,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:40,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:40,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:40,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:40,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:40,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-14 02:42:40,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:40,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-14 02:42:40,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:40,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 02:42:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 02:42:40,198 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 45 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:42:40,199 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1536418305] [2020-10-14 02:42:40,199 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:40,199 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 02:42:40,200 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208771495] [2020-10-14 02:42:40,200 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 02:42:40,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:40,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 02:42:40,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 02:42:40,201 INFO L87 Difference]: Start difference. First operand 9347 states and 12737 transitions. Second operand 5 states. [2020-10-14 02:42:52,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:42:52,362 INFO L93 Difference]: Finished difference Result 28003 states and 39166 transitions. [2020-10-14 02:42:52,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 02:42:52,368 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-10-14 02:42:52,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:42:52,447 INFO L225 Difference]: With dead ends: 28003 [2020-10-14 02:42:52,447 INFO L226 Difference]: Without dead ends: 18662 [2020-10-14 02:42:52,469 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 02:42:52,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18662 states. [2020-10-14 02:42:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18662 to 18646. [2020-10-14 02:42:52,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18646 states. [2020-10-14 02:42:52,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18646 states to 18646 states and 24562 transitions. [2020-10-14 02:42:52,896 INFO L78 Accepts]: Start accepts. Automaton has 18646 states and 24562 transitions. Word has length 143 [2020-10-14 02:42:52,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:42:52,896 INFO L479 AbstractCegarLoop]: Abstraction has 18646 states and 24562 transitions. [2020-10-14 02:42:52,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 02:42:52,897 INFO L276 IsEmpty]: Start isEmpty. Operand 18646 states and 24562 transitions. [2020-10-14 02:42:53,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2020-10-14 02:42:53,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:42:53,025 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:42:53,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 02:42:53,026 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:42:53,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:42:53,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1565178474, now seen corresponding path program 1 times [2020-10-14 02:42:53,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:42:53,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893961290] [2020-10-14 02:42:53,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:42:53,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:53,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:53,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:54,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:58,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:58,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-14 02:42:58,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:42:58,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-14 02:42:58,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:58,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:58,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 02:42:58,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:42:58,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:42:58,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:42:58,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:58,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:58,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:58,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:42:58,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:58,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:42:58,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:58,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:42:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:58,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:42:58,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:42:58,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:58,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:58,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:58,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-14 02:42:58,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-14 02:42:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:58,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:42:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:42:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 02:42:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:58,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-14 02:42:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:42:58,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:42:58,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:42:58,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:42:58,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:42:58,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-14 02:42:58,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:42:58,616 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:42:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:42:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:42:58,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:42:58,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:42:58,839 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 174 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:42:58,839 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1893961290] [2020-10-14 02:42:58,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:42:58,841 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:42:58,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369705881] [2020-10-14 02:42:58,842 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:42:58,843 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:42:58,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:42:58,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:42:58,845 INFO L87 Difference]: Start difference. First operand 18646 states and 24562 transitions. Second operand 7 states. [2020-10-14 02:43:11,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:11,742 INFO L93 Difference]: Finished difference Result 37605 states and 50190 transitions. [2020-10-14 02:43:11,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:43:11,746 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 261 [2020-10-14 02:43:11,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:11,835 INFO L225 Difference]: With dead ends: 37605 [2020-10-14 02:43:11,836 INFO L226 Difference]: Without dead ends: 18965 [2020-10-14 02:43:11,880 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:43:11,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18965 states. [2020-10-14 02:43:12,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18965 to 18925. [2020-10-14 02:43:12,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18925 states. [2020-10-14 02:43:12,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18925 states to 18925 states and 23208 transitions. [2020-10-14 02:43:12,347 INFO L78 Accepts]: Start accepts. Automaton has 18925 states and 23208 transitions. Word has length 261 [2020-10-14 02:43:12,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:12,348 INFO L479 AbstractCegarLoop]: Abstraction has 18925 states and 23208 transitions. [2020-10-14 02:43:12,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:43:12,349 INFO L276 IsEmpty]: Start isEmpty. Operand 18925 states and 23208 transitions. [2020-10-14 02:43:12,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 02:43:12,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:12,369 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 02:43:12,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 02:43:12,369 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:12,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:12,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1981449947, now seen corresponding path program 1 times [2020-10-14 02:43:12,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:12,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [268365632] [2020-10-14 02:43:12,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:12,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:12,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:12,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:12,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:13,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:16,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:16,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:17,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:17,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 02:43:17,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-14 02:43:17,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-14 02:43:17,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:17,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-14 02:43:17,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:43:17,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:17,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:17,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:17,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:17,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:17,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:17,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:17,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:43:17,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:17,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:17,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:43:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:17,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:43:17,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:17,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:17,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:17,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:17,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:17,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-14 02:43:17,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:17,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-14 02:43:17,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:17,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:17,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:17,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-14 02:43:17,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:17,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-14 02:43:17,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:17,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:17,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:17,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:43:17,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:17,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-14 02:43:17,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:17,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:17,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:17,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:43:17,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:43:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:43:18,145 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [268365632] [2020-10-14 02:43:18,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:43:18,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:43:18,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097457799] [2020-10-14 02:43:18,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:43:18,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:18,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:43:18,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:43:18,149 INFO L87 Difference]: Start difference. First operand 18925 states and 23208 transitions. Second operand 7 states. [2020-10-14 02:43:48,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:43:48,294 INFO L93 Difference]: Finished difference Result 62578 states and 81142 transitions. [2020-10-14 02:43:48,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:43:48,298 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-14 02:43:48,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:43:48,476 INFO L225 Difference]: With dead ends: 62578 [2020-10-14 02:43:48,476 INFO L226 Difference]: Without dead ends: 43659 [2020-10-14 02:43:48,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 02:43:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43659 states. [2020-10-14 02:43:49,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43659 to 43486. [2020-10-14 02:43:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43486 states. [2020-10-14 02:43:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43486 states to 43486 states and 53609 transitions. [2020-10-14 02:43:49,411 INFO L78 Accepts]: Start accepts. Automaton has 43486 states and 53609 transitions. Word has length 294 [2020-10-14 02:43:49,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:43:49,412 INFO L479 AbstractCegarLoop]: Abstraction has 43486 states and 53609 transitions. [2020-10-14 02:43:49,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:43:49,413 INFO L276 IsEmpty]: Start isEmpty. Operand 43486 states and 53609 transitions. [2020-10-14 02:43:49,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 322 [2020-10-14 02:43:49,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:43:49,440 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:43:49,440 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 02:43:49,440 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:43:49,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:43:49,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1039838078, now seen corresponding path program 1 times [2020-10-14 02:43:49,441 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:43:49,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2062242991] [2020-10-14 02:43:49,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:43:49,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:49,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:51,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:51,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 331 [2020-10-14 02:43:51,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:51,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-10-14 02:43:51,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:51,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 02:43:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 02:43:51,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-14 02:43:51,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:51,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:43:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:51,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:51,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:43:51,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:43:51,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 02:43:51,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:43:51,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:43:51,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:43:51,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:43:51,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:43:51,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 269 [2020-10-14 02:43:51,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:43:51,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 420 [2020-10-14 02:43:51,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:43:51,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:43:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:43:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:43:51,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-14 02:43:51,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:43:53,378 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 02:43:53,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2062242991] [2020-10-14 02:43:53,379 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 02:43:53,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 02:43:53,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169346879] [2020-10-14 02:43:53,381 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:43:53,381 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:43:53,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:43:53,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:43:53,382 INFO L87 Difference]: Start difference. First operand 43486 states and 53609 transitions. Second operand 7 states. [2020-10-14 02:44:12,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:12,339 INFO L93 Difference]: Finished difference Result 103360 states and 130176 transitions. [2020-10-14 02:44:12,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 02:44:12,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 321 [2020-10-14 02:44:12,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:12,532 INFO L225 Difference]: With dead ends: 103360 [2020-10-14 02:44:12,532 INFO L226 Difference]: Without dead ends: 59880 [2020-10-14 02:44:12,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 02:44:12,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59880 states. [2020-10-14 02:44:13,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59880 to 58312. [2020-10-14 02:44:13,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58312 states. [2020-10-14 02:44:13,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58312 states to 58312 states and 72419 transitions. [2020-10-14 02:44:13,784 INFO L78 Accepts]: Start accepts. Automaton has 58312 states and 72419 transitions. Word has length 321 [2020-10-14 02:44:13,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:13,785 INFO L479 AbstractCegarLoop]: Abstraction has 58312 states and 72419 transitions. [2020-10-14 02:44:13,785 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:44:13,785 INFO L276 IsEmpty]: Start isEmpty. Operand 58312 states and 72419 transitions. [2020-10-14 02:44:13,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2020-10-14 02:44:13,817 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:13,818 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-14 02:44:13,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 02:44:13,819 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:13,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:13,819 INFO L82 PathProgramCache]: Analyzing trace with hash 255843655, now seen corresponding path program 1 times [2020-10-14 02:44:13,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:13,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [74476286] [2020-10-14 02:44:13,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:14,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:15,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:18,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:18,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 338 [2020-10-14 02:44:18,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 02:44:18,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-14 02:44:18,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:18,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:18,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 160 [2020-10-14 02:44:18,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:44:18,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 02:44:19,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:44:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:19,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:44:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:19,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 02:44:19,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:19,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:19,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:19,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:44:19,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:19,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:19,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:19,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 02:44:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-14 02:44:19,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:19,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:44:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:19,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:44:19,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:19,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 02:44:19,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:19,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:19,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:19,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-14 02:44:19,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:19,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-10-14 02:44:19,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:19,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:44:19,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:44:19,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-14 02:44:19,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:19,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 02:44:19,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:19,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:19,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:44:19,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:44:19,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:44:19,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-14 02:44:19,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:44:19,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:44:19,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:44:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:44:19,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:44:19,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:44:19,875 INFO L134 CoverageAnalysis]: Checked inductivity of 359 backedges. 285 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-14 02:44:19,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [74476286] [2020-10-14 02:44:19,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:44:19,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:44:19,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819780020] [2020-10-14 02:44:19,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:44:19,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:44:19,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:44:19,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:44:19,884 INFO L87 Difference]: Start difference. First operand 58312 states and 72419 transitions. Second operand 7 states. [2020-10-14 02:44:53,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 02:44:53,243 INFO L93 Difference]: Finished difference Result 142488 states and 187100 transitions. [2020-10-14 02:44:53,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 02:44:53,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 324 [2020-10-14 02:44:53,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 02:44:53,629 INFO L225 Difference]: With dead ends: 142488 [2020-10-14 02:44:53,629 INFO L226 Difference]: Without dead ends: 86350 [2020-10-14 02:44:53,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 02:44:53,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86350 states. [2020-10-14 02:44:55,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86350 to 82282. [2020-10-14 02:44:55,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82282 states. [2020-10-14 02:44:55,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82282 states to 82282 states and 101291 transitions. [2020-10-14 02:44:55,437 INFO L78 Accepts]: Start accepts. Automaton has 82282 states and 101291 transitions. Word has length 324 [2020-10-14 02:44:55,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 02:44:55,437 INFO L479 AbstractCegarLoop]: Abstraction has 82282 states and 101291 transitions. [2020-10-14 02:44:55,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 02:44:55,437 INFO L276 IsEmpty]: Start isEmpty. Operand 82282 states and 101291 transitions. [2020-10-14 02:44:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2020-10-14 02:44:55,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 02:44:55,476 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 02:44:55,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 02:44:55,477 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 02:44:55,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 02:44:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash -1899477513, now seen corresponding path program 1 times [2020-10-14 02:44:55,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 02:44:55,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [722397435] [2020-10-14 02:44:55,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 02:44:55,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:44:55,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:55,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:44:55,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:00,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:00,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:00,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 340 [2020-10-14 02:45:00,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 02:45:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-14 02:45:00,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:00,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:00,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:00,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 162 [2020-10-14 02:45:00,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-14 02:45:00,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:00,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 02:45:00,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:00,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:00,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 02:45:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 02:45:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:00,683 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 02:45:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:00,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 02:45:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:00,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 02:45:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:00,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:00,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-14 02:45:00,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:00,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-14 02:45:00,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:00,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 02:45:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 02:45:00,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-14 02:45:00,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 02:45:00,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-14 02:45:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 02:45:00,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 02:45:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 02:45:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-14 02:45:01,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-14 02:45:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 02:45:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 215 backedges. 212 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 02:45:01,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [722397435] [2020-10-14 02:45:01,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 02:45:01,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 02:45:01,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [647369535] [2020-10-14 02:45:01,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 02:45:01,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 02:45:01,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 02:45:01,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 02:45:01,164 INFO L87 Difference]: Start difference. First operand 82282 states and 101291 transitions. Second operand 7 states.