/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem01_label52.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:29:56,345 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:29:56,349 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:29:56,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:29:56,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:29:56,377 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:29:56,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:29:56,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:29:56,383 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:29:56,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:29:56,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:29:56,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:29:56,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:29:56,388 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:29:56,395 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:29:56,397 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:29:56,398 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:29:56,399 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:29:56,401 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:29:56,403 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:29:56,407 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:29:56,409 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:29:56,412 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:29:56,413 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:29:56,415 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:29:56,416 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:29:56,416 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:29:56,417 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:29:56,417 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:29:56,418 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:29:56,419 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:29:56,419 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:29:56,420 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:29:56,421 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:29:56,422 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:29:56,423 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:29:56,424 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:29:56,424 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:29:56,424 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:29:56,425 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:29:56,426 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:29:56,427 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 [2020-09-25 13:29:56,454 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:29:56,454 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:29:56,455 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:29:56,455 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:29:56,456 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:29:56,456 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:29:56,456 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:29:56,456 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:29:56,457 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:29:56,457 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:29:56,457 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:29:56,457 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:29:56,457 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:29:56,458 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:29:56,458 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:29:56,458 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:29:56,458 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:29:56,458 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:29:56,459 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:29:56,459 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:29:56,459 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:29:56,459 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:29:56,459 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:29:56,460 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:29:56,460 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:29:56,460 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:29:56,460 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:29:56,461 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:29:56,461 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:29:56,461 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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;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=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:29:56,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:29:56,931 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:29:56,937 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:29:56,941 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:29:56,942 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:29:56,943 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 13:29:57,035 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c22f246/b7d93316086a43f4bc1528c69a73ce27/FLAG37bb18463 [2020-09-25 13:29:57,742 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:29:57,744 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label52.c [2020-09-25 13:29:57,760 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c22f246/b7d93316086a43f4bc1528c69a73ce27/FLAG37bb18463 [2020-09-25 13:29:57,918 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/48c22f246/b7d93316086a43f4bc1528c69a73ce27 [2020-09-25 13:29:57,934 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:29:57,941 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:29:57,942 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:57,943 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:29:57,947 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:29:57,949 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:57" (1/1) ... [2020-09-25 13:29:57,953 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@112bbb30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:57, skipping insertion in model container [2020-09-25 13:29:57,954 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:29:57" (1/1) ... [2020-09-25 13:29:57,964 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:29:58,015 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:29:58,508 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:58,515 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:29:58,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:29:58,767 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:29:58,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58 WrapperNode [2020-09-25 13:29:58,768 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:29:58,769 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:29:58,769 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:29:58,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:29:58,787 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,787 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,808 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,809 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,860 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (1/1) ... [2020-09-25 13:29:58,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:29:58,887 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:29:58,887 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:29:58,887 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:29:58,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (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 [2020-09-25 13:29:58,971 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:29:58,972 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:29:58,972 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:29:58,972 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:29:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:29:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:29:58,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:29:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:29:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:29:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:29:58,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:30:00,341 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:30:00,342 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:30:00,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:00 BoogieIcfgContainer [2020-09-25 13:30:00,352 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:30:00,354 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:30:00,354 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:30:00,358 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:30:00,358 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:29:57" (1/3) ... [2020-09-25 13:30:00,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:00, skipping insertion in model container [2020-09-25 13:30:00,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:29:58" (2/3) ... [2020-09-25 13:30:00,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ad18132 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:30:00, skipping insertion in model container [2020-09-25 13:30:00,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:30:00" (3/3) ... [2020-09-25 13:30:00,363 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label52.c [2020-09-25 13:30:00,376 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:30:00,393 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:30:00,417 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:30:00,459 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:30:00,459 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:30:00,459 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:30:00,460 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:30:00,460 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:30:00,460 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:30:00,460 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:30:00,460 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:30:00,492 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:30:00,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-09-25 13:30:00,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:00,518 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:30:00,519 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:00,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:00,526 INFO L82 PathProgramCache]: Analyzing trace with hash 1583508727, now seen corresponding path program 1 times [2020-09-25 13:30:00,537 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:00,537 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002017105] [2020-09-25 13:30:00,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:00,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:01,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:02,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:04,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:05,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-25 13:30:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:30:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5113 [2020-09-25 13:30:05,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:05,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:30:05,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:30:05,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-09-25 13:30:05,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:30:06,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:06,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:06,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:06,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:06,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:06,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:30:06,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:06,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:06,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:30:06,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:06,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:06,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002017105] [2020-09-25 13:30:06,309 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:30:06,309 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:30:06,310 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945323536] [2020-09-25 13:30:06,318 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:30:06,319 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:06,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:30:06,337 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:30:06,340 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 13:30:08,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:08,634 INFO L93 Difference]: Finished difference Result 1268 states and 1667 transitions. [2020-09-25 13:30:08,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:30:08,637 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 154 [2020-09-25 13:30:08,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:08,664 INFO L225 Difference]: With dead ends: 1268 [2020-09-25 13:30:08,664 INFO L226 Difference]: Without dead ends: 694 [2020-09-25 13:30:08,675 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:30:08,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2020-09-25 13:30:08,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 603. [2020-09-25 13:30:08,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:30:08,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 719 transitions. [2020-09-25 13:30:08,801 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 719 transitions. Word has length 154 [2020-09-25 13:30:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:08,802 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 719 transitions. [2020-09-25 13:30:08,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:30:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 719 transitions. [2020-09-25 13:30:08,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 13:30:08,817 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:08,818 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:08,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:30:08,818 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:08,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:08,819 INFO L82 PathProgramCache]: Analyzing trace with hash -81177825, now seen corresponding path program 1 times [2020-09-25 13:30:08,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:08,820 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [125667029] [2020-09-25 13:30:08,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:08,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:08,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:09,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:10,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:11,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:13,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-25 13:30:13,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:30:13,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 13:30:13,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:13,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:30:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 13:30:13,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:30:13,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:14,512 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 46 [2020-09-25 13:30:14,681 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 43 [2020-09-25 13:30:14,805 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 39 [2020-09-25 13:30:15,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:15,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:15,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:30:15,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:15,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:30:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:30:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:15,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:15,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:15,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:15,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:30:15,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:30:15,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:15,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:30:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:15,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:30:15,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:15,522 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:15,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [125667029] [2020-09-25 13:30:15,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:15,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:30:15,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250201801] [2020-09-25 13:30:15,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:30:15,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:15,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:30:15,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=134, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:30:15,527 INFO L87 Difference]: Start difference. First operand 603 states and 719 transitions. Second operand 14 states. [2020-09-25 13:30:16,227 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-09-25 13:30:16,425 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 116 [2020-09-25 13:30:16,879 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 113 [2020-09-25 13:30:17,430 WARN L193 SmtUtils]: Spent 321.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-09-25 13:30:17,826 WARN L193 SmtUtils]: Spent 301.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 107 [2020-09-25 13:30:18,053 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-09-25 13:30:18,837 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 104 [2020-09-25 13:30:19,689 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 99 [2020-09-25 13:30:20,199 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 49 [2020-09-25 13:30:20,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:20,391 INFO L93 Difference]: Finished difference Result 1284 states and 1593 transitions. [2020-09-25 13:30:20,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:30:20,397 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 175 [2020-09-25 13:30:20,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:20,406 INFO L225 Difference]: With dead ends: 1284 [2020-09-25 13:30:20,406 INFO L226 Difference]: Without dead ends: 705 [2020-09-25 13:30:20,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:30:20,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 705 states. [2020-09-25 13:30:20,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 705 to 684. [2020-09-25 13:30:20,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 684 states. [2020-09-25 13:30:20,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 684 states to 684 states and 809 transitions. [2020-09-25 13:30:20,459 INFO L78 Accepts]: Start accepts. Automaton has 684 states and 809 transitions. Word has length 175 [2020-09-25 13:30:20,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:20,462 INFO L479 AbstractCegarLoop]: Abstraction has 684 states and 809 transitions. [2020-09-25 13:30:20,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:30:20,463 INFO L276 IsEmpty]: Start isEmpty. Operand 684 states and 809 transitions. [2020-09-25 13:30:20,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 13:30:20,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:20,469 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:20,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:30:20,469 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:20,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:20,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1469093243, now seen corresponding path program 1 times [2020-09-25 13:30:20,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:20,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1191429084] [2020-09-25 13:30:20,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:20,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:20,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:20,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:21,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:22,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:25,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:25,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 13:30:25,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:25,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 13:30:25,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:25,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 13:30:25,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:30:25,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-09-25 13:30:25,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:26,101 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 36 [2020-09-25 13:30:26,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:26,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:26,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:26,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:26,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:30:26,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:26,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:26,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:26,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 13:30:26,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:26,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:26,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:26,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:26,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:26,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:30:26,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:26,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-09-25 13:30:26,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:26,847 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:26,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:26,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:30:26,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:27,222 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:30:27,223 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1191429084] [2020-09-25 13:30:27,223 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:27,227 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 13:30:27,228 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271288642] [2020-09-25 13:30:27,229 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 13:30:27,229 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:27,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 13:30:27,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:30:27,230 INFO L87 Difference]: Start difference. First operand 684 states and 809 transitions. Second operand 20 states. [2020-09-25 13:30:28,682 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-25 13:30:28,960 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-09-25 13:30:29,497 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-25 13:30:29,964 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 88 [2020-09-25 13:30:30,392 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 87 [2020-09-25 13:30:31,715 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 81 [2020-09-25 13:30:32,069 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 80 [2020-09-25 13:30:32,572 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 86 [2020-09-25 13:30:33,963 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-09-25 13:30:34,533 WARN L193 SmtUtils]: Spent 220.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 84 [2020-09-25 13:30:35,540 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 76 [2020-09-25 13:30:36,459 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-25 13:30:37,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:37,944 INFO L93 Difference]: Finished difference Result 2208 states and 2814 transitions. [2020-09-25 13:30:37,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 13:30:37,945 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 176 [2020-09-25 13:30:37,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:37,963 INFO L225 Difference]: With dead ends: 2208 [2020-09-25 13:30:37,963 INFO L226 Difference]: Without dead ends: 1548 [2020-09-25 13:30:37,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=545, Invalid=1261, Unknown=0, NotChecked=0, Total=1806 [2020-09-25 13:30:37,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-25 13:30:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1282. [2020-09-25 13:30:38,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1282 states. [2020-09-25 13:30:38,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1282 states to 1282 states and 1520 transitions. [2020-09-25 13:30:38,035 INFO L78 Accepts]: Start accepts. Automaton has 1282 states and 1520 transitions. Word has length 176 [2020-09-25 13:30:38,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:38,036 INFO L479 AbstractCegarLoop]: Abstraction has 1282 states and 1520 transitions. [2020-09-25 13:30:38,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 13:30:38,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1282 states and 1520 transitions. [2020-09-25 13:30:38,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 13:30:38,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:38,043 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:38,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:30:38,043 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:38,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:38,044 INFO L82 PathProgramCache]: Analyzing trace with hash -231794110, now seen corresponding path program 1 times [2020-09-25 13:30:38,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:38,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [298889028] [2020-09-25 13:30:38,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:38,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:38,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:39,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:40,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:43,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:43,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-09-25 13:30:43,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:30:43,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:30:43,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:43,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:43,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:30:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:30:43,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-09-25 13:30:43,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:43,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:30:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:43,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:43,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:43,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:30:43,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:30:43,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:30:43,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:43,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:43,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:30:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:30:43,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:30:43,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:30:43,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:30:43,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:43,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:43,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:30:43,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:30:43,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:30:43,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 13:30:43,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:30:43,409 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:30:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:30:43,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:30:43,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 13:30:43,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:30:43,474 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:30:43,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [298889028] [2020-09-25 13:30:43,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:30:43,475 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:30:43,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141309436] [2020-09-25 13:30:43,476 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:30:43,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:30:43,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:30:43,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:30:43,477 INFO L87 Difference]: Start difference. First operand 1282 states and 1520 transitions. Second operand 6 states. [2020-09-25 13:30:45,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:30:45,515 INFO L93 Difference]: Finished difference Result 3215 states and 4034 transitions. [2020-09-25 13:30:45,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:30:45,516 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 183 [2020-09-25 13:30:45,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:30:45,531 INFO L225 Difference]: With dead ends: 3215 [2020-09-25 13:30:45,531 INFO L226 Difference]: Without dead ends: 1957 [2020-09-25 13:30:45,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:30:45,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1957 states. [2020-09-25 13:30:45,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1957 to 1864. [2020-09-25 13:30:45,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1864 states. [2020-09-25 13:30:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2294 transitions. [2020-09-25 13:30:45,602 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2294 transitions. Word has length 183 [2020-09-25 13:30:45,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:30:45,603 INFO L479 AbstractCegarLoop]: Abstraction has 1864 states and 2294 transitions. [2020-09-25 13:30:45,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:30:45,603 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2294 transitions. [2020-09-25 13:30:45,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 13:30:45,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:30:45,613 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 13:30:45,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:30:45,613 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:30:45,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:30:45,613 INFO L82 PathProgramCache]: Analyzing trace with hash -1550643776, now seen corresponding path program 1 times [2020-09-25 13:30:45,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:30:45,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1316971571] [2020-09-25 13:30:45,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:30:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:30:45,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:45,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:46,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:30:47,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking...