/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:38:54,340 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:38:54,345 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:38:54,388 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:38:54,389 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:38:54,397 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:38:54,398 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:38:54,403 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:38:54,407 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:38:54,411 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:38:54,412 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:38:54,414 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:38:54,414 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:38:54,417 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:38:54,421 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:38:54,423 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:38:54,424 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:38:54,426 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:38:54,428 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:38:54,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:38:54,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:38:54,442 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:38:54,444 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:38:54,445 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:38:54,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:38:54,462 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:38:54,462 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:38:54,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:38:54,466 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:38:54,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:38:54,467 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:38:54,468 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:38:54,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:38:54,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:38:54,478 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:38:54,478 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:38:54,480 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:38:54,480 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:38:54,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:38:54,482 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:38:54,483 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:38:54,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:38:54,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:38:54,534 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:38:54,536 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:38:54,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:38:54,537 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:38:54,537 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:38:54,537 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:38:54,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:38:54,538 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:38:54,538 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:38:54,539 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:38:54,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:38:54,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:38:54,540 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:38:54,540 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:38:54,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:38:54,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:38:54,541 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:38:54,541 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:38:54,541 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:38:54,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:38:54,542 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:54,542 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:38:54,542 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:38:54,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:38:54,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:38:54,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:38:54,543 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:38:54,543 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:38:54,544 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:38:55,030 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:38:55,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:38:55,063 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:38:55,067 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:38:55,068 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:38:55,069 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 21:38:55,171 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c73b7036d/d27381d20fe248ed8290e025fa76b369/FLAGf0fd442eb [2020-09-24 21:38:55,880 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:38:55,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-09-24 21:38:55,902 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c73b7036d/d27381d20fe248ed8290e025fa76b369/FLAGf0fd442eb [2020-09-24 21:38:56,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c73b7036d/d27381d20fe248ed8290e025fa76b369 [2020-09-24 21:38:56,111 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:38:56,118 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:38:56,119 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:56,119 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:38:56,124 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:38:56,125 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:56,130 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19617743 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56, skipping insertion in model container [2020-09-24 21:38:56,131 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:56,141 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:38:56,201 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:38:56,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:56,673 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:38:56,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:38:56,917 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:38:56,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56 WrapperNode [2020-09-24 21:38:56,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:38:56,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:38:56,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:38:56,920 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:38:56,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:56,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:56,959 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:56,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:57,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:57,031 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:57,041 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... [2020-09-24 21:38:57,048 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:38:57,049 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:38:57,049 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:38:57,049 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:38:57,050 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:38:57,132 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:38:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:38:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:38:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:38:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:38:57,133 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:38:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:38:57,134 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:38:58,536 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:38:58,537 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:38:58,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:58 BoogieIcfgContainer [2020-09-24 21:38:58,547 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:38:58,549 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:38:58,549 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:38:58,553 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:38:58,553 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:38:56" (1/3) ... [2020-09-24 21:38:58,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07a1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:58, skipping insertion in model container [2020-09-24 21:38:58,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:38:56" (2/3) ... [2020-09-24 21:38:58,555 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b07a1f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:38:58, skipping insertion in model container [2020-09-24 21:38:58,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:38:58" (3/3) ... [2020-09-24 21:38:58,558 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-09-24 21:38:58,570 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:38:58,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:38:58,604 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:38:58,640 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:38:58,641 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:38:58,641 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:38:58,641 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:38:58,641 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:38:58,641 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:38:58,642 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:38:58,642 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:38:58,674 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-24 21:38:58,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-24 21:38:58,697 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:38:58,699 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] [2020-09-24 21:38:58,699 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:38:58,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:38:58,707 INFO L82 PathProgramCache]: Analyzing trace with hash 461278893, now seen corresponding path program 1 times [2020-09-24 21:38:58,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:38:58,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1571404691] [2020-09-24 21:38:58,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:38:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:38:59,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:38:59,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:00,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:00,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:00,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:02,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:02,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-24 21:39:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:39:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 21:39:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:39:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:39:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-24 21:39:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:39:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:04,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:04,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:04,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:04,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:04,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-24 21:39:04,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:04,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:04,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:39:05,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1571404691] [2020-09-24 21:39:05,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:39:05,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-24 21:39:05,253 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133676234] [2020-09-24 21:39:05,262 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:39:05,262 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:05,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:39:05,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:39:05,289 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 18 states. [2020-09-24 21:39:06,139 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 89 [2020-09-24 21:39:06,401 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-09-24 21:39:06,801 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 87 [2020-09-24 21:39:07,771 WARN L193 SmtUtils]: Spent 203.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 86 [2020-09-24 21:39:08,259 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-09-24 21:39:12,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:12,143 INFO L93 Difference]: Finished difference Result 1700 states and 2421 transitions. [2020-09-24 21:39:12,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-24 21:39:12,146 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-09-24 21:39:12,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:12,177 INFO L225 Difference]: With dead ends: 1700 [2020-09-24 21:39:12,178 INFO L226 Difference]: Without dead ends: 1101 [2020-09-24 21:39:12,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=303, Invalid=627, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:39:12,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1101 states. [2020-09-24 21:39:12,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1101 to 985. [2020-09-24 21:39:12,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 985 states. [2020-09-24 21:39:12,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 985 states to 985 states and 1147 transitions. [2020-09-24 21:39:12,328 INFO L78 Accepts]: Start accepts. Automaton has 985 states and 1147 transitions. Word has length 141 [2020-09-24 21:39:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:12,329 INFO L479 AbstractCegarLoop]: Abstraction has 985 states and 1147 transitions. [2020-09-24 21:39:12,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:39:12,329 INFO L276 IsEmpty]: Start isEmpty. Operand 985 states and 1147 transitions. [2020-09-24 21:39:12,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-24 21:39:12,349 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:12,350 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:39:12,350 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:39:12,350 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:12,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:12,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1729041822, now seen corresponding path program 1 times [2020-09-24 21:39:12,352 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:12,353 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985475620] [2020-09-24 21:39:12,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:12,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:12,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:13,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:14,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:14,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:15,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-09-24 21:39:17,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:39:17,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 21:39:17,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 21:39:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 21:39:17,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-24 21:39:17,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:18,254 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 45 [2020-09-24 21:39:18,426 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 45 [2020-09-24 21:39:18,739 WARN L193 SmtUtils]: Spent 282.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 58 [2020-09-24 21:39:19,075 WARN L193 SmtUtils]: Spent 270.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 60 [2020-09-24 21:39:19,490 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 118 DAG size of output: 64 [2020-09-24 21:39:19,863 WARN L193 SmtUtils]: Spent 318.00 ms on a formula simplification. DAG size of input: 120 DAG size of output: 62 [2020-09-24 21:39:20,327 WARN L193 SmtUtils]: Spent 411.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 60 [2020-09-24 21:39:20,707 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 53 [2020-09-24 21:39:21,171 WARN L193 SmtUtils]: Spent 406.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 54 [2020-09-24 21:39:21,570 WARN L193 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 106 DAG size of output: 48 [2020-09-24 21:39:21,984 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 47 [2020-09-24 21:39:22,271 WARN L193 SmtUtils]: Spent 219.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 42 [2020-09-24 21:39:22,529 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 36 [2020-09-24 21:39:22,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:22,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:22,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:22,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-09-24 21:39:22,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:22,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-24 21:39:22,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:22,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:22,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:22,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:22,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:39:22,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:22,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 21:39:22,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:22,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:39:22,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:22,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-09-24 21:39:22,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:22,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:23,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:23,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:23,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-24 21:39:23,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:39:23,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 21:39:23,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:23,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:39:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:39:23,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:23,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:39:23,563 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 25 proven. 11 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:39:23,563 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985475620] [2020-09-24 21:39:23,563 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:39:23,564 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-09-24 21:39:23,564 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482373740] [2020-09-24 21:39:23,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-09-24 21:39:23,567 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:39:23,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-09-24 21:39:23,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=606, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:39:23,567 INFO L87 Difference]: Start difference. First operand 985 states and 1147 transitions. Second operand 28 states. [2020-09-24 21:39:24,191 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-09-24 21:39:24,947 WARN L193 SmtUtils]: Spent 297.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-09-24 21:39:25,409 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 62 [2020-09-24 21:39:26,221 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 105 [2020-09-24 21:39:26,748 WARN L193 SmtUtils]: Spent 328.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 101 [2020-09-24 21:39:27,038 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 58 [2020-09-24 21:39:27,461 WARN L193 SmtUtils]: Spent 216.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 58 [2020-09-24 21:39:27,753 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-09-24 21:39:29,214 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 103 [2020-09-24 21:39:29,550 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 97 [2020-09-24 21:39:29,957 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 102 [2020-09-24 21:39:30,364 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 121 DAG size of output: 117 [2020-09-24 21:39:30,874 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-24 21:39:31,270 WARN L193 SmtUtils]: Spent 264.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 89 [2020-09-24 21:39:31,970 WARN L193 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 120 [2020-09-24 21:39:32,356 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 104 [2020-09-24 21:39:32,790 WARN L193 SmtUtils]: Spent 302.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 103 [2020-09-24 21:39:33,132 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 96 [2020-09-24 21:39:33,531 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 95 [2020-09-24 21:39:34,096 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 121 [2020-09-24 21:39:35,076 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 124 [2020-09-24 21:39:35,937 WARN L193 SmtUtils]: Spent 412.00 ms on a formula simplification. DAG size of input: 136 DAG size of output: 122 [2020-09-24 21:39:36,544 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 121 [2020-09-24 21:39:37,056 WARN L193 SmtUtils]: Spent 380.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 115 [2020-09-24 21:39:37,419 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 79 [2020-09-24 21:39:37,866 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 133 DAG size of output: 115 [2020-09-24 21:39:38,099 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 86 [2020-09-24 21:39:38,461 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 85 [2020-09-24 21:39:38,764 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 78 [2020-09-24 21:39:39,190 WARN L193 SmtUtils]: Spent 361.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 110 [2020-09-24 21:39:39,509 WARN L193 SmtUtils]: Spent 240.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-09-24 21:39:40,091 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-09-24 21:39:40,355 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-24 21:39:41,024 WARN L193 SmtUtils]: Spent 346.00 ms on a formula simplification. DAG size of input: 130 DAG size of output: 110 [2020-09-24 21:39:41,507 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 129 DAG size of output: 106 [2020-09-24 21:39:41,964 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 101 [2020-09-24 21:39:43,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:39:43,219 INFO L93 Difference]: Finished difference Result 3392 states and 4356 transitions. [2020-09-24 21:39:43,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 63 states. [2020-09-24 21:39:43,220 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 179 [2020-09-24 21:39:43,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:39:43,248 INFO L225 Difference]: With dead ends: 3392 [2020-09-24 21:39:43,248 INFO L226 Difference]: Without dead ends: 2495 [2020-09-24 21:39:43,258 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 17.4s TimeCoverageRelationStatistics Valid=1567, Invalid=4133, Unknown=0, NotChecked=0, Total=5700 [2020-09-24 21:39:43,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2495 states. [2020-09-24 21:39:43,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2495 to 1872. [2020-09-24 21:39:43,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1872 states. [2020-09-24 21:39:43,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1872 states to 1872 states and 2228 transitions. [2020-09-24 21:39:43,369 INFO L78 Accepts]: Start accepts. Automaton has 1872 states and 2228 transitions. Word has length 179 [2020-09-24 21:39:43,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:39:43,370 INFO L479 AbstractCegarLoop]: Abstraction has 1872 states and 2228 transitions. [2020-09-24 21:39:43,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-09-24 21:39:43,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1872 states and 2228 transitions. [2020-09-24 21:39:43,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-24 21:39:43,380 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:39:43,381 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 21:39:43,381 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:39:43,381 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:39:43,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:39:43,383 INFO L82 PathProgramCache]: Analyzing trace with hash 1962225044, now seen corresponding path program 1 times [2020-09-24 21:39:43,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:39:43,387 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226611226] [2020-09-24 21:39:43,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:39:43,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:43,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:43,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:45,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:48,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:48,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-09-24 21:39:48,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:39:48,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-24 21:39:48,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:39:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 21:39:48,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:39:48,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-24 21:39:48,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:39:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:48,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:48,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:39:48,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-24 21:39:48,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:39:48,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:39:48,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:39:48,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:39:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:39:48,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:39:48,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:39:48,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-24 21:39:48,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:39:48,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:39:48,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking...