/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 SingleStatement --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=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:44:01,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:44:01,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:44:01,256 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:44:01,257 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:44:01,264 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:44:01,266 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:44:01,271 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:44:01,273 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:44:01,273 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:44:01,274 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:44:01,275 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:44:01,277 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:44:01,281 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:44:01,282 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:44:01,282 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:44:01,285 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:44:01,288 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:44:01,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:44:01,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:44:01,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:44:01,300 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:44:01,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:44:01,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:44:01,307 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:44:01,307 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:44:01,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:44:01,310 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:44:01,311 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:44:01,311 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:44:01,312 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:44:01,312 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:44:01,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:44:01,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:44:01,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:44:01,315 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:44:01,316 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:44:01,316 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:44:01,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:44:01,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:44:01,319 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:44:01,320 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 [2020-09-24 21:44:01,368 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:44:01,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:44:01,370 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:44:01,370 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:44:01,371 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:44:01,371 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:44:01,371 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:44:01,372 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:44:01,372 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:44:01,372 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:44:01,373 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:44:01,373 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:44:01,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:44:01,374 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:44:01,374 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:44:01,375 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:44:01,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:44:01,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:44:01,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:44:01,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:44:01,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:44:01,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:44:01,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:44:01,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:44:01,376 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:44:01,377 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:44:01,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:44:01,377 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:44:01,377 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:44:01,377 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 -> SingleStatement 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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:44:01,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:44:01,848 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:44:01,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:44:01,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:44:01,857 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:44:01,858 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-24 21:44:01,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5d419e45/18dabf6a770847379de1d76e7e852642/FLAGf7812b718 [2020-09-24 21:44:02,581 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:44:02,582 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label03.c [2020-09-24 21:44:02,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5d419e45/18dabf6a770847379de1d76e7e852642/FLAGf7812b718 [2020-09-24 21:44:02,812 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c5d419e45/18dabf6a770847379de1d76e7e852642 [2020-09-24 21:44:02,827 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:44:02,832 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:44:02,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:02,837 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:44:02,841 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:44:02,842 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:02" (1/1) ... [2020-09-24 21:44:02,846 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72eb96f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:02, skipping insertion in model container [2020-09-24 21:44:02,846 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:44:02" (1/1) ... [2020-09-24 21:44:02,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:44:02,909 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:44:03,387 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:03,392 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:44:03,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:44:03,605 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:44:03,606 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03 WrapperNode [2020-09-24 21:44:03,606 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:44:03,607 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:44:03,607 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:44:03,607 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:44:03,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,643 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,643 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,699 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,705 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (1/1) ... [2020-09-24 21:44:03,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:44:03,716 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:44:03,716 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:44:03,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:44:03,718 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (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 [2020-09-24 21:44:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:44:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:44:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:44:03,808 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:44:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:44:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:44:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:44:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:44:03,809 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:44:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:44:03,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:44:05,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:44:05,137 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:44:05,146 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:05 BoogieIcfgContainer [2020-09-24 21:44:05,146 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:44:05,147 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:44:05,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:44:05,151 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:44:05,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:44:02" (1/3) ... [2020-09-24 21:44:05,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:05, skipping insertion in model container [2020-09-24 21:44:05,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:44:03" (2/3) ... [2020-09-24 21:44:05,153 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b7f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:44:05, skipping insertion in model container [2020-09-24 21:44:05,153 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:44:05" (3/3) ... [2020-09-24 21:44:05,156 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label03.c [2020-09-24 21:44:05,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:44:05,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:44:05,197 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:44:05,231 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:44:05,231 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:44:05,231 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:44:05,231 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:44:05,232 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:44:05,232 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:44:05,232 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:44:05,232 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:44:05,260 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:44:05,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-24 21:44:05,270 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:05,271 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:05,272 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:05,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:05,279 INFO L82 PathProgramCache]: Analyzing trace with hash 1813443015, now seen corresponding path program 1 times [2020-09-24 21:44:05,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:05,291 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155607618] [2020-09-24 21:44:05,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:05,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:05,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:05,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:06,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:06,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-24 21:44:06,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:44:06,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1107 [2020-09-24 21:44:06,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:44:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 21:44:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:44:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:06,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:06,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:06,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:06,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:06,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:44:06,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:06,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:06,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:06,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:06,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155607618] [2020-09-24 21:44:06,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:44:06,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:44:06,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61336187] [2020-09-24 21:44:06,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:44:06,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:06,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:44:06,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:44:06,858 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 5 states. [2020-09-24 21:44:10,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:10,037 INFO L93 Difference]: Finished difference Result 1358 states and 1918 transitions. [2020-09-24 21:44:10,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:44:10,040 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 55 [2020-09-24 21:44:10,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:10,065 INFO L225 Difference]: With dead ends: 1358 [2020-09-24 21:44:10,065 INFO L226 Difference]: Without dead ends: 812 [2020-09-24 21:44:10,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:44:10,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2020-09-24 21:44:10,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 738. [2020-09-24 21:44:10,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 738 states. [2020-09-24 21:44:10,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 738 states to 738 states and 928 transitions. [2020-09-24 21:44:10,186 INFO L78 Accepts]: Start accepts. Automaton has 738 states and 928 transitions. Word has length 55 [2020-09-24 21:44:10,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:10,186 INFO L479 AbstractCegarLoop]: Abstraction has 738 states and 928 transitions. [2020-09-24 21:44:10,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:44:10,187 INFO L276 IsEmpty]: Start isEmpty. Operand 738 states and 928 transitions. [2020-09-24 21:44:10,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 21:44:10,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:10,195 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:44:10,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:44:10,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:10,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:10,196 INFO L82 PathProgramCache]: Analyzing trace with hash -226140616, now seen corresponding path program 1 times [2020-09-24 21:44:10,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:10,196 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [178223238] [2020-09-24 21:44:10,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:10,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:10,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:10,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:10,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:10,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:12,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:12,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-24 21:44:12,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:44:12,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2704 [2020-09-24 21:44:12,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:44:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:12,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-24 21:44:12,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:13,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:13,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:13,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:13,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:13,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:13,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:13,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:44:13,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:13,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:44:13,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:13,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:13,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:13,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:13,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:13,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:13,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:13,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:13,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-24 21:44:13,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:13,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:13,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:13,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 21:44:13,642 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:44:13,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [178223238] [2020-09-24 21:44:13,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:13,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:13,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133722512] [2020-09-24 21:44:13,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:13,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:13,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:13,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:13,652 INFO L87 Difference]: Start difference. First operand 738 states and 928 transitions. Second operand 9 states. [2020-09-24 21:44:16,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:16,445 INFO L93 Difference]: Finished difference Result 1670 states and 2143 transitions. [2020-09-24 21:44:16,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:44:16,446 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 134 [2020-09-24 21:44:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:16,456 INFO L225 Difference]: With dead ends: 1670 [2020-09-24 21:44:16,456 INFO L226 Difference]: Without dead ends: 947 [2020-09-24 21:44:16,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:44:16,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2020-09-24 21:44:16,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 695. [2020-09-24 21:44:16,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-24 21:44:16,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 859 transitions. [2020-09-24 21:44:16,498 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 859 transitions. Word has length 134 [2020-09-24 21:44:16,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:16,499 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 859 transitions. [2020-09-24 21:44:16,499 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:16,500 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 859 transitions. [2020-09-24 21:44:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-09-24 21:44:16,507 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:16,507 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:16,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:44:16,508 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:16,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:16,508 INFO L82 PathProgramCache]: Analyzing trace with hash -281265186, now seen corresponding path program 1 times [2020-09-24 21:44:16,509 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:16,509 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863051512] [2020-09-24 21:44:16,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:17,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:17,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:17,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:18,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:21,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:21,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-09-24 21:44:21,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:44:21,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 21:44:21,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:44:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:44:21,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 237 [2020-09-24 21:44:21,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:44:21,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:21,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:21,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:21,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:21,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:21,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:21,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:44:21,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:21,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:44:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:21,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:21,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:21,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:21,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:22,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:22,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:22,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:22,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-09-24 21:44:22,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:22,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:44:22,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:22,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:22,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:22,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:22,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:22,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:22,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-24 21:44:22,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:22,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-24 21:44:22,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:22,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-24 21:44:22,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:22,970 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 81 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-09-24 21:44:22,971 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863051512] [2020-09-24 21:44:22,971 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:22,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:44:22,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389780043] [2020-09-24 21:44:22,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:44:22,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:22,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:44:22,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:44:22,975 INFO L87 Difference]: Start difference. First operand 695 states and 859 transitions. Second operand 9 states. [2020-09-24 21:44:26,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:26,612 INFO L93 Difference]: Finished difference Result 1586 states and 2072 transitions. [2020-09-24 21:44:26,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:44:26,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 263 [2020-09-24 21:44:26,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:26,628 INFO L225 Difference]: With dead ends: 1586 [2020-09-24 21:44:26,630 INFO L226 Difference]: Without dead ends: 1032 [2020-09-24 21:44:26,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=94, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:44:26,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1032 states. [2020-09-24 21:44:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1032 to 996. [2020-09-24 21:44:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 996 states. [2020-09-24 21:44:26,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1205 transitions. [2020-09-24 21:44:26,694 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1205 transitions. Word has length 263 [2020-09-24 21:44:26,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:26,697 INFO L479 AbstractCegarLoop]: Abstraction has 996 states and 1205 transitions. [2020-09-24 21:44:26,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:44:26,698 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1205 transitions. [2020-09-24 21:44:26,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2020-09-24 21:44:26,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:26,710 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:26,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:44:26,710 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:26,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:26,712 INFO L82 PathProgramCache]: Analyzing trace with hash -1969044888, now seen corresponding path program 1 times [2020-09-24 21:44:26,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:26,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269487012] [2020-09-24 21:44:26,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:26,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:28,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:31,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 282 [2020-09-24 21:44:31,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:44:31,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:44:31,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:44:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:31,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-09-24 21:44:31,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:31,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:31,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:31,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:31,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:31,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:31,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:31,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:44:31,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:44:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:31,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:44:31,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:31,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:31,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:32,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:32,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:32,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:32,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:32,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-24 21:44:32,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:32,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:32,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:32,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:32,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:32,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:32,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:32,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:32,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-24 21:44:32,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:32,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-24 21:44:32,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:32,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:32,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-24 21:44:32,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:32,810 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 90 proven. 63 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:44:32,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269487012] [2020-09-24 21:44:32,812 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:32,812 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:44:32,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773297118] [2020-09-24 21:44:32,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:44:32,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:32,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:44:32,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:44:32,816 INFO L87 Difference]: Start difference. First operand 996 states and 1205 transitions. Second operand 10 states. [2020-09-24 21:44:36,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:36,266 INFO L93 Difference]: Finished difference Result 2748 states and 3502 transitions. [2020-09-24 21:44:36,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:44:36,267 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 269 [2020-09-24 21:44:36,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:36,278 INFO L225 Difference]: With dead ends: 2748 [2020-09-24 21:44:36,278 INFO L226 Difference]: Without dead ends: 1917 [2020-09-24 21:44:36,282 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=270, Unknown=0, NotChecked=0, Total=380 [2020-09-24 21:44:36,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-09-24 21:44:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1660. [2020-09-24 21:44:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1660 states. [2020-09-24 21:44:36,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1660 states to 1660 states and 2104 transitions. [2020-09-24 21:44:36,350 INFO L78 Accepts]: Start accepts. Automaton has 1660 states and 2104 transitions. Word has length 269 [2020-09-24 21:44:36,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:36,351 INFO L479 AbstractCegarLoop]: Abstraction has 1660 states and 2104 transitions. [2020-09-24 21:44:36,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:44:36,351 INFO L276 IsEmpty]: Start isEmpty. Operand 1660 states and 2104 transitions. [2020-09-24 21:44:36,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-09-24 21:44:36,357 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:36,357 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:36,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:44:36,358 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:36,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:36,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1282645872, now seen corresponding path program 1 times [2020-09-24 21:44:36,358 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:36,359 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564484599] [2020-09-24 21:44:36,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:36,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:36,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:36,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:37,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:38,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:39,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:41,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 283 [2020-09-24 21:44:41,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:44:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:44:41,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:44:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:44:41,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 243 [2020-09-24 21:44:41,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:41,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:44:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:41,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:44:41,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:41,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:44:41,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:41,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:44:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:44:41,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:44:41,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:44:41,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:44:41,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:41,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:41,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:44:41,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:44:41,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-09-24 21:44:41,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:44:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:41,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:44:41,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:42,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:44:42,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:42,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:42,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:44:42,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-24 21:44:42,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:44:42,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-24 21:44:42,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:44:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:44:42,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:44:42,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-24 21:44:42,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:44:43,063 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 68 proven. 85 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:44:43,064 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564484599] [2020-09-24 21:44:43,064 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:44:43,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:44:43,065 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834297936] [2020-09-24 21:44:43,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:44:43,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:44:43,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:44:43,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:44:43,068 INFO L87 Difference]: Start difference. First operand 1660 states and 2104 transitions. Second operand 15 states. [2020-09-24 21:44:49,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:44:49,662 INFO L93 Difference]: Finished difference Result 3709 states and 4779 transitions. [2020-09-24 21:44:49,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:44:49,663 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 270 [2020-09-24 21:44:49,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:44:49,679 INFO L225 Difference]: With dead ends: 3709 [2020-09-24 21:44:49,679 INFO L226 Difference]: Without dead ends: 2184 [2020-09-24 21:44:49,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:44:49,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2184 states. [2020-09-24 21:44:49,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2184 to 2036. [2020-09-24 21:44:49,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2036 states. [2020-09-24 21:44:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2036 states to 2036 states and 2545 transitions. [2020-09-24 21:44:49,767 INFO L78 Accepts]: Start accepts. Automaton has 2036 states and 2545 transitions. Word has length 270 [2020-09-24 21:44:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:44:49,768 INFO L479 AbstractCegarLoop]: Abstraction has 2036 states and 2545 transitions. [2020-09-24 21:44:49,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:44:49,768 INFO L276 IsEmpty]: Start isEmpty. Operand 2036 states and 2545 transitions. [2020-09-24 21:44:49,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-24 21:44:49,776 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:44:49,776 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:44:49,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:44:49,777 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:44:49,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:44:49,777 INFO L82 PathProgramCache]: Analyzing trace with hash 1451587462, now seen corresponding path program 1 times [2020-09-24 21:44:49,777 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:44:49,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [490878705] [2020-09-24 21:44:49,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:44:49,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:44:49,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:44:50,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking...