/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 log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:11:36,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:11:36,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:11:36,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:11:36,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:11:36,268 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:11:36,270 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:11:36,272 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:11:36,274 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:11:36,275 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:11:36,276 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:11:36,277 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:11:36,278 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:11:36,279 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:11:36,280 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:11:36,281 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:11:36,282 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:11:36,284 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:11:36,286 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:11:36,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:11:36,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:11:36,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:11:36,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:11:36,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:11:36,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:11:36,296 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:11:36,296 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:11:36,297 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:11:36,298 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:11:36,299 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:11:36,299 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:11:36,300 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:11:36,301 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:11:36,302 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:11:36,303 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:11:36,303 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:11:36,304 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:11:36,304 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:11:36,305 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:11:36,306 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:11:36,306 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:11:36,307 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 17:11:36,334 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:11:36,334 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:11:36,338 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:11:36,338 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:11:36,338 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:11:36,338 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:11:36,339 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:11:36,339 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:11:36,339 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:11:36,339 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:11:36,339 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:11:36,340 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:11:36,340 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:11:36,340 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:11:36,340 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:11:36,340 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:11:36,341 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:11:36,341 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:11:36,341 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:11:36,342 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:11:36,342 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:11:36,342 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:11:36,342 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:11:36,343 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:11:36,343 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:11:36,343 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:11:36,343 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:11:36,344 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:11:36,344 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:11:36,344 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;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;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;log-additional-information=true; [2020-09-24 17:11:36,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:11:36,832 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:11:36,837 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:11:36,838 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:11:36,839 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:11:36,840 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 17:11:36,931 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/810504414/e7c5515216784828827a25ded80fd0f4/FLAGa371de0d7 [2020-09-24 17:11:37,591 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:11:37,592 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 17:11:37,605 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/810504414/e7c5515216784828827a25ded80fd0f4/FLAGa371de0d7 [2020-09-24 17:11:37,789 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/810504414/e7c5515216784828827a25ded80fd0f4 [2020-09-24 17:11:37,804 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:11:37,810 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:11:37,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:11:37,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:11:37,815 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:11:37,816 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:11:37" (1/1) ... [2020-09-24 17:11:37,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:37, skipping insertion in model container [2020-09-24 17:11:37,821 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:11:37" (1/1) ... [2020-09-24 17:11:37,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:11:37,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:11:38,300 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:11:38,306 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:11:38,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:11:38,533 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:11:38,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38 WrapperNode [2020-09-24 17:11:38,534 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:11:38,534 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:11:38,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:11:38,535 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:11:38,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (1/1) ... [2020-09-24 17:11:38,636 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:11:38,637 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:11:38,637 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:11:38,637 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:11:38,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (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 17:11:38,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:11:38,738 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:11:38,739 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:11:38,739 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:11:38,739 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:11:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:11:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:11:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:11:38,740 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:11:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:11:38,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:11:40,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:11:40,019 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:11:40,029 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:11:40 BoogieIcfgContainer [2020-09-24 17:11:40,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:11:40,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:11:40,031 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:11:40,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:11:40,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:11:37" (1/3) ... [2020-09-24 17:11:40,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:11:40, skipping insertion in model container [2020-09-24 17:11:40,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:11:38" (2/3) ... [2020-09-24 17:11:40,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39890648 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:11:40, skipping insertion in model container [2020-09-24 17:11:40,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:11:40" (3/3) ... [2020-09-24 17:11:40,039 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-24 17:11:40,053 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:11:40,069 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:11:40,091 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:11:40,136 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:11:40,137 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:11:40,137 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:11:40,137 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:11:40,137 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:11:40,138 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:11:40,138 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:11:40,138 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:11:40,178 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 17:11:40,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 17:11:40,215 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:11:40,217 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] [2020-09-24 17:11:40,218 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:11:40,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:11:40,226 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-24 17:11:40,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:11:40,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [829968196] [2020-09-24 17:11:40,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:11:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:40,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:41,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:42,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:43,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:43,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:44,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:49,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:49,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:53,017 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:11:53,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 17:11:53,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 17:11:53,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12463 [2020-09-24 17:11:53,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:11:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 17:11:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:11:53,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-09-24 17:11:53,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 17:11:53,724 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 33 [2020-09-24 17:11:53,842 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2020-09-24 17:11:53,965 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 34 [2020-09-24 17:11:54,119 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-09-24 17:11:54,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:11:54,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:54,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:54,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:11:54,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:11:54,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:11:54,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 17:11:54,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:11:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 17:11:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:11:54,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:11:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:11:54,888 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 17:11:54,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [829968196] [2020-09-24 17:11:54,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:11:54,891 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2020-09-24 17:11:54,892 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439686934] [2020-09-24 17:11:54,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 17:11:54,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:11:54,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 17:11:54,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=280, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:11:54,914 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 20 states. [2020-09-24 17:11:55,677 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 17:11:55,954 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 82 [2020-09-24 17:11:56,234 WARN L193 SmtUtils]: Spent 242.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 87 [2020-09-24 17:11:56,567 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 83 [2020-09-24 17:11:56,985 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 17:11:57,358 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-09-24 17:11:57,628 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 17:11:57,920 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 17:11:58,079 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 37 [2020-09-24 17:11:58,341 WARN L193 SmtUtils]: Spent 207.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 17:11:59,544 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 81 [2020-09-24 17:11:59,757 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 17:12:00,291 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 17:12:00,767 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 75 [2020-09-24 17:12:01,236 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-09-24 17:12:01,533 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 17:12:01,922 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 76 [2020-09-24 17:12:02,176 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 74 [2020-09-24 17:12:02,566 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 17:12:02,817 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 77 DAG size of output: 75 [2020-09-24 17:12:04,243 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 17:12:05,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:12:05,744 INFO L93 Difference]: Finished difference Result 1674 states and 2354 transitions. [2020-09-24 17:12:05,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-09-24 17:12:05,747 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 152 [2020-09-24 17:12:05,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:12:05,782 INFO L225 Difference]: With dead ends: 1674 [2020-09-24 17:12:05,782 INFO L226 Difference]: Without dead ends: 1036 [2020-09-24 17:12:05,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1017 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=943, Invalid=2479, Unknown=0, NotChecked=0, Total=3422 [2020-09-24 17:12:05,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-24 17:12:05,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 960. [2020-09-24 17:12:05,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 960 states. [2020-09-24 17:12:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 960 states to 960 states and 1135 transitions. [2020-09-24 17:12:05,915 INFO L78 Accepts]: Start accepts. Automaton has 960 states and 1135 transitions. Word has length 152 [2020-09-24 17:12:05,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:12:05,916 INFO L479 AbstractCegarLoop]: Abstraction has 960 states and 1135 transitions. [2020-09-24 17:12:05,916 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 17:12:05,916 INFO L276 IsEmpty]: Start isEmpty. Operand 960 states and 1135 transitions. [2020-09-24 17:12:05,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-24 17:12:05,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:12:05,923 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:12:05,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:12:05,923 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:12:05,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:12:05,924 INFO L82 PathProgramCache]: Analyzing trace with hash -186709720, now seen corresponding path program 1 times [2020-09-24 17:12:05,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:12:05,925 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [387230260] [2020-09-24 17:12:05,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:12:05,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:06,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:06,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:06,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:07,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:08,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:08,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:09,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:09,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:10,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:10,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:13,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:13,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:14,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:15,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:16,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:16,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:20,504 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:20,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-24 17:12:20,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 17:12:20,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14533 [2020-09-24 17:12:20,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:12:20,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 17:12:20,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-09-24 17:12:20,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:20,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:12:20,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:20,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:20,670 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:20,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 17:12:20,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:12:20,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 17:12:20,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:20,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 17:12:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:12:20,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 17:12:20,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:12:20,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 17:12:20,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:20,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:20,744 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:12:20,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 17:12:20,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 17:12:20,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 17:12:20,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:12:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 17:12:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 17:12:20,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 17:12:20,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:12:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 17:12:20,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [387230260] [2020-09-24 17:12:20,847 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:12:20,847 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 17:12:20,847 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [844013488] [2020-09-24 17:12:20,849 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 17:12:20,849 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:12:20,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 17:12:20,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 17:12:20,850 INFO L87 Difference]: Start difference. First operand 960 states and 1135 transitions. Second operand 6 states. [2020-09-24 17:12:22,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:12:22,662 INFO L93 Difference]: Finished difference Result 2206 states and 2713 transitions. [2020-09-24 17:12:22,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 17:12:22,662 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 176 [2020-09-24 17:12:22,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:12:22,671 INFO L225 Difference]: With dead ends: 2206 [2020-09-24 17:12:22,672 INFO L226 Difference]: Without dead ends: 1268 [2020-09-24 17:12:22,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-24 17:12:22,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1268 states. [2020-09-24 17:12:22,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1268 to 1108. [2020-09-24 17:12:22,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1108 states. [2020-09-24 17:12:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1108 states to 1108 states and 1347 transitions. [2020-09-24 17:12:22,738 INFO L78 Accepts]: Start accepts. Automaton has 1108 states and 1347 transitions. Word has length 176 [2020-09-24 17:12:22,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:12:22,740 INFO L479 AbstractCegarLoop]: Abstraction has 1108 states and 1347 transitions. [2020-09-24 17:12:22,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 17:12:22,741 INFO L276 IsEmpty]: Start isEmpty. Operand 1108 states and 1347 transitions. [2020-09-24 17:12:22,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-24 17:12:22,751 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:12:22,752 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 17:12:22,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:12:22,753 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:12:22,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:12:22,753 INFO L82 PathProgramCache]: Analyzing trace with hash 1868326385, now seen corresponding path program 1 times [2020-09-24 17:12:22,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:12:22,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72041709] [2020-09-24 17:12:22,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:12:22,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:12:22,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:22,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:23,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:24,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:24,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:24,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:26,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:26,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:26,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:26,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:27,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:27,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:27,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:12:27,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking...