/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/Problem01_label42.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 17:10:35,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 17:10:35,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 17:10:35,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 17:10:35,548 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 17:10:35,549 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 17:10:35,551 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 17:10:35,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 17:10:35,555 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 17:10:35,556 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 17:10:35,557 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 17:10:35,558 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 17:10:35,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 17:10:35,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 17:10:35,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 17:10:35,562 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 17:10:35,563 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 17:10:35,563 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 17:10:35,565 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 17:10:35,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 17:10:35,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 17:10:35,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 17:10:35,572 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 17:10:35,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 17:10:35,575 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 17:10:35,576 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 17:10:35,576 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 17:10:35,577 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 17:10:35,577 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 17:10:35,578 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 17:10:35,579 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 17:10:35,579 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 17:10:35,580 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 17:10:35,581 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 17:10:35,582 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 17:10:35,582 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 17:10:35,586 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 17:10:35,586 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 17:10:35,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 17:10:35,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 17:10:35,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 17:10:35,589 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 17:10:35,614 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 17:10:35,614 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 17:10:35,615 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 17:10:35,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 17:10:35,616 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 17:10:35,616 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 17:10:35,616 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 17:10:35,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 17:10:35,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 17:10:35,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 17:10:35,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 17:10:35,617 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 17:10:35,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 17:10:35,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 17:10:35,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 17:10:35,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 17:10:35,618 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 17:10:35,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 17:10:35,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 17:10:35,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 17:10:35,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 17:10:35,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 17:10:35,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 17:10:35,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 17:10:35,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 17:10:35,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 17:10:35,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 17:10:35,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 17:10:35,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 17:10:35,621 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 17:10:36,115 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 17:10:36,134 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 17:10:36,139 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 17:10:36,141 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 17:10:36,141 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 17:10:36,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-24 17:10:36,222 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c1e197d8/fe455d603b1647ca91398e05ed59a0d4/FLAG31964ce9d [2020-09-24 17:10:36,908 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 17:10:36,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label42.c [2020-09-24 17:10:36,927 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c1e197d8/fe455d603b1647ca91398e05ed59a0d4/FLAG31964ce9d [2020-09-24 17:10:37,128 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c1e197d8/fe455d603b1647ca91398e05ed59a0d4 [2020-09-24 17:10:37,145 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 17:10:37,152 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 17:10:37,155 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 17:10:37,155 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 17:10:37,160 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 17:10:37,161 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:37,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f78b0b2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37, skipping insertion in model container [2020-09-24 17:10:37,167 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:37,178 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 17:10:37,249 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 17:10:37,714 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:10:37,721 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 17:10:37,939 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 17:10:37,966 INFO L208 MainTranslator]: Completed translation [2020-09-24 17:10:37,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37 WrapperNode [2020-09-24 17:10:37,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 17:10:37,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 17:10:37,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 17:10:37,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 17:10:37,982 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:37,982 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:38,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:38,003 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:38,065 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:38,077 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:38,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (1/1) ... [2020-09-24 17:10:38,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 17:10:38,101 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 17:10:38,101 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 17:10:38,101 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 17:10:38,102 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (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 17:10:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 17:10:38,180 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 17:10:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 17:10:38,181 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 17:10:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 17:10:38,181 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 17:10:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 17:10:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 17:10:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 17:10:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 17:10:38,182 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 17:10:39,519 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 17:10:39,520 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 17:10:39,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:10:39 BoogieIcfgContainer [2020-09-24 17:10:39,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 17:10:39,530 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 17:10:39,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 17:10:39,534 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 17:10:39,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 05:10:37" (1/3) ... [2020-09-24 17:10:39,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:10:39, skipping insertion in model container [2020-09-24 17:10:39,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 05:10:37" (2/3) ... [2020-09-24 17:10:39,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d6b3b80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 05:10:39, skipping insertion in model container [2020-09-24 17:10:39,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 05:10:39" (3/3) ... [2020-09-24 17:10:39,539 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label42.c [2020-09-24 17:10:39,552 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 17:10:39,563 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 17:10:39,586 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 17:10:39,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 17:10:39,626 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 17:10:39,626 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 17:10:39,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 17:10:39,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 17:10:39,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 17:10:39,627 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 17:10:39,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 17:10:39,663 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 17:10:39,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-09-24 17:10:39,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:10:39,688 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] [2020-09-24 17:10:39,688 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:10:39,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:10:39,695 INFO L82 PathProgramCache]: Analyzing trace with hash 907543029, now seen corresponding path program 1 times [2020-09-24 17:10:39,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:10:39,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424349087] [2020-09-24 17:10:39,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:10:40,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:40,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:40,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:40,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:44,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:44,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:45,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:50,844 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:50,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 17:10:50,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:10:50,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10830 [2020-09-24 17:10:50,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 17:10:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 17:10:50,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 17:10:50,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 17:10:51,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:10:51,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:10:51,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:10:51,690 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:10:51,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:10:51,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:10:51,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-24 17:10:51,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:10:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 17:10:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:10:51,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 17:10:51,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:10:51,965 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 17:10:51,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424349087] [2020-09-24 17:10:51,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 17:10:51,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 17:10:51,969 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520723445] [2020-09-24 17:10:51,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 17:10:51,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:10:51,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 17:10:51,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-24 17:10:51,992 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 17:10:52,298 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 70 [2020-09-24 17:10:52,641 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-09-24 17:10:52,799 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 17:10:53,153 WARN L193 SmtUtils]: Spent 299.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 17:10:53,508 WARN L193 SmtUtils]: Spent 275.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 17:10:54,083 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 87 [2020-09-24 17:10:55,201 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 86 [2020-09-24 17:10:55,796 WARN L193 SmtUtils]: Spent 255.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 84 [2020-09-24 17:10:56,579 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 81 [2020-09-24 17:10:56,903 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-24 17:10:57,270 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 79 [2020-09-24 17:10:58,443 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 76 [2020-09-24 17:11:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:11:01,524 INFO L93 Difference]: Finished difference Result 1701 states and 2422 transitions. [2020-09-24 17:11:01,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 17:11:01,527 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 143 [2020-09-24 17:11:01,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:11:01,556 INFO L225 Difference]: With dead ends: 1701 [2020-09-24 17:11:01,556 INFO L226 Difference]: Without dead ends: 1103 [2020-09-24 17:11:01,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=384, Invalid=948, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 17:11:01,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1103 states. [2020-09-24 17:11:01,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1103 to 985. [2020-09-24 17:11:01,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 17:11:01,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1149 transitions. [2020-09-24 17:11:01,695 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1149 transitions. Word has length 143 [2020-09-24 17:11:01,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:11:01,696 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1149 transitions. [2020-09-24 17:11:01,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 17:11:01,696 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1149 transitions. [2020-09-24 17:11:01,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-24 17:11:01,708 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:11:01,708 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:11:01,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 17:11:01,709 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:11:01,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:11:01,710 INFO L82 PathProgramCache]: Analyzing trace with hash 201587256, now seen corresponding path program 1 times [2020-09-24 17:11:01,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:11:01,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1377675718] [2020-09-24 17:11:01,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:11:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:01,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:01,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:02,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:02,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:04,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:04,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:05,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:07,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:12,476 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:11:12,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-24 17:11:12,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 17:11:12,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10711 [2020-09-24 17:11:12,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:11:12,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 17:11:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 17:11:12,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 17:11:12,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:11:13,011 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-09-24 17:11:13,140 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-09-24 17:11:13,270 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 35 [2020-09-24 17:11:14,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 17:11:14,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:14,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:14,069 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:11:14,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 17:11:14,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:11:14,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 17:11:14,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:11:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 17:11:14,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:11:14,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 17:11:14,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:11:14,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 17:11:14,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:14,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:14,147 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-24 17:11:14,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 17:11:14,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 17:11:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 17:11:14,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: RANDOM [2020-09-24 17:11:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 17:11:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 17:11:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 17:11:14,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 17:11:14,328 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 17:11:14,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1377675718] [2020-09-24 17:11:14,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 17:11:14,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-24 17:11:14,329 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077902673] [2020-09-24 17:11:14,331 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-24 17:11:14,332 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 17:11:14,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-24 17:11:14,333 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=247, Unknown=0, NotChecked=0, Total=380 [2020-09-24 17:11:14,333 INFO L87 Difference]: Start difference. First operand 985 states and 1149 transitions. Second operand 20 states. [2020-09-24 17:11:14,891 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 17:11:15,081 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 17:11:15,381 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 17:11:15,779 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-24 17:11:16,091 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 17:11:16,298 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-24 17:11:16,864 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 17:11:17,207 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-09-24 17:11:17,420 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-09-24 17:11:17,712 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-09-24 17:11:17,936 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 17:11:18,211 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-24 17:11:18,372 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-24 17:11:18,577 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 87 [2020-09-24 17:11:18,744 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 85 [2020-09-24 17:11:19,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 17:11:19,833 INFO L93 Difference]: Finished difference Result 2092 states and 2497 transitions. [2020-09-24 17:11:19,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 17:11:19,834 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 160 [2020-09-24 17:11:19,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 17:11:19,842 INFO L225 Difference]: With dead ends: 2092 [2020-09-24 17:11:19,843 INFO L226 Difference]: Without dead ends: 1195 [2020-09-24 17:11:19,847 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 306 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=570, Invalid=1152, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 17:11:19,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1195 states. [2020-09-24 17:11:19,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1195 to 1072. [2020-09-24 17:11:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1072 states. [2020-09-24 17:11:19,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1072 states to 1072 states and 1249 transitions. [2020-09-24 17:11:19,909 INFO L78 Accepts]: Start accepts. Automaton has 1072 states and 1249 transitions. Word has length 160 [2020-09-24 17:11:19,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 17:11:19,911 INFO L479 AbstractCegarLoop]: Abstraction has 1072 states and 1249 transitions. [2020-09-24 17:11:19,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-24 17:11:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1072 states and 1249 transitions. [2020-09-24 17:11:19,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-24 17:11:19,920 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 17:11:19,921 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 17:11:19,921 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 17:11:19,921 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 17:11:19,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 17:11:19,922 INFO L82 PathProgramCache]: Analyzing trace with hash 1914810438, now seen corresponding path program 1 times [2020-09-24 17:11:19,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 17:11:19,923 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929021802] [2020-09-24 17:11:19,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 17:11:19,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 17:11:20,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:20,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:21,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:21,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:22,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:22,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:22,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:23,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:24,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:25,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:25,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 17:11:26,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking...