/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:31:58,542 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:31:58,548 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:31:58,574 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:31:58,575 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:31:58,576 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:31:58,578 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:31:58,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:31:58,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:31:58,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:31:58,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:31:58,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:31:58,586 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:31:58,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:31:58,588 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:31:58,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:31:58,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:31:58,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:31:58,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:31:58,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:31:58,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:31:58,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:31:58,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:31:58,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:31:58,602 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:31:58,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:31:58,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:31:58,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:31:58,604 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:31:58,605 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:31:58,606 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:31:58,607 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:31:58,607 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:31:58,608 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:31:58,609 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:31:58,610 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:31:58,610 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:31:58,611 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:31:58,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:31:58,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:31:58,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:31:58,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:31:58,670 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:31:58,670 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:31:58,673 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:31:58,673 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:31:58,673 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:31:58,674 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:31:58,674 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:31:58,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:31:58,675 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:31:58,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:31:58,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:31:58,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:31:58,677 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:31:58,677 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:31:58,677 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:31:58,677 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:31:58,678 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:31:58,678 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:31:58,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:31:58,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:31:58,678 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:31:58,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:31:58,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:31:58,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:31:58,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:31:58,681 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:31:58,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:31:58,681 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:31:58,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:31:58,682 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:31:59,177 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:31:59,199 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:31:59,205 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:31:59,206 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:31:59,207 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:31:59,208 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 13:31:59,282 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99113f06b/5b16db967639484199d0845a63394dbe/FLAG3686e78ed [2020-09-25 13:31:59,903 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:31:59,904 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label31.c [2020-09-25 13:31:59,919 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99113f06b/5b16db967639484199d0845a63394dbe/FLAG3686e78ed [2020-09-25 13:32:00,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/99113f06b/5b16db967639484199d0845a63394dbe [2020-09-25 13:32:00,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:00,183 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:00,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:00,186 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:00,191 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:00,192 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:00" (1/1) ... [2020-09-25 13:32:00,196 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4231a4a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:00, skipping insertion in model container [2020-09-25 13:32:00,197 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:00" (1/1) ... [2020-09-25 13:32:00,206 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:00,264 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:00,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:00,893 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:00,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:01,001 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:01,002 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01 WrapperNode [2020-09-25 13:32:01,002 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:01,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:01,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:01,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:01,017 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,018 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,078 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,095 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,100 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... [2020-09-25 13:32:01,108 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:01,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:01,109 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:01,109 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:01,110 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:01,184 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:01,184 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:01,185 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:01,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:02,569 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:02,573 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:02,588 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:02 BoogieIcfgContainer [2020-09-25 13:32:02,588 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:02,593 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:02,593 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:02,597 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:02,597 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:00" (1/3) ... [2020-09-25 13:32:02,599 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aece562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:02, skipping insertion in model container [2020-09-25 13:32:02,599 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:01" (2/3) ... [2020-09-25 13:32:02,600 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5aece562 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:02, skipping insertion in model container [2020-09-25 13:32:02,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:02" (3/3) ... [2020-09-25 13:32:02,603 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label31.c [2020-09-25 13:32:02,615 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:02,629 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:02,653 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:02,693 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:02,693 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:02,693 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:02,694 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:02,694 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:02,694 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:02,694 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:02,694 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:02,728 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:02,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-09-25 13:32:02,749 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:02,751 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] [2020-09-25 13:32:02,752 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:02,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:02,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1921303583, now seen corresponding path program 1 times [2020-09-25 13:32:02,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:02,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786869251] [2020-09-25 13:32:02,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:03,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:03,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:04,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:05,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:07,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:08,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 13:32:08,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:32:08,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:32:08,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:08,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:08,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 13:32:08,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 13:32:08,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:08,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:08,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:08,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:08,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:08,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:08,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:08,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 13:32:08,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:08,364 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:08,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:08,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 13:32:08,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:08,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:08,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786869251] [2020-09-25 13:32:08,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:08,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:08,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828606016] [2020-09-25 13:32:08,428 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:08,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:08,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:08,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:08,452 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:10,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:10,517 INFO L93 Difference]: Finished difference Result 1206 states and 1652 transitions. [2020-09-25 13:32:10,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:10,519 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 142 [2020-09-25 13:32:10,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:10,553 INFO L225 Difference]: With dead ends: 1206 [2020-09-25 13:32:10,554 INFO L226 Difference]: Without dead ends: 628 [2020-09-25 13:32:10,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:10,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-09-25 13:32:10,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 615. [2020-09-25 13:32:10,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 615 states. [2020-09-25 13:32:10,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 615 states to 615 states and 751 transitions. [2020-09-25 13:32:10,673 INFO L78 Accepts]: Start accepts. Automaton has 615 states and 751 transitions. Word has length 142 [2020-09-25 13:32:10,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:10,675 INFO L479 AbstractCegarLoop]: Abstraction has 615 states and 751 transitions. [2020-09-25 13:32:10,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:10,675 INFO L276 IsEmpty]: Start isEmpty. Operand 615 states and 751 transitions. [2020-09-25 13:32:10,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-09-25 13:32:10,684 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:10,684 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:10,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:10,685 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:10,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:10,686 INFO L82 PathProgramCache]: Analyzing trace with hash -381885604, now seen corresponding path program 1 times [2020-09-25 13:32:10,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:10,686 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328091114] [2020-09-25 13:32:10,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:10,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:10,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:12,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:14,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-09-25 13:32:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:32:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 13:32:15,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 13:32:15,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:15,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:15,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:15,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:15,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:15,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:15,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:15,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:15,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:15,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:15,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:15,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:15,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:15,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 13:32:15,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:15,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 13:32:15,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:15,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:15,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:15,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 13:32:15,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:16,041 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 22 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:16,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328091114] [2020-09-25 13:32:16,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:16,042 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:16,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121455107] [2020-09-25 13:32:16,045 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:16,045 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:16,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:16,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:16,047 INFO L87 Difference]: Start difference. First operand 615 states and 751 transitions. Second operand 5 states. [2020-09-25 13:32:17,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:17,793 INFO L93 Difference]: Finished difference Result 1540 states and 1960 transitions. [2020-09-25 13:32:17,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:17,795 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 176 [2020-09-25 13:32:17,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:17,800 INFO L225 Difference]: With dead ends: 1540 [2020-09-25 13:32:17,801 INFO L226 Difference]: Without dead ends: 737 [2020-09-25 13:32:17,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2020-09-25 13:32:17,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 715. [2020-09-25 13:32:17,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 715 states. [2020-09-25 13:32:17,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 834 transitions. [2020-09-25 13:32:17,844 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 834 transitions. Word has length 176 [2020-09-25 13:32:17,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:17,845 INFO L479 AbstractCegarLoop]: Abstraction has 715 states and 834 transitions. [2020-09-25 13:32:17,845 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:17,845 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 834 transitions. [2020-09-25 13:32:17,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-09-25 13:32:17,849 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:17,850 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:17,850 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:17,850 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:17,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:17,851 INFO L82 PathProgramCache]: Analyzing trace with hash 1267838172, now seen corresponding path program 1 times [2020-09-25 13:32:17,851 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:17,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2076493236] [2020-09-25 13:32:17,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:17,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:17,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:17,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:18,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:18,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:21,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:22,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:22,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 13:32:22,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:32:22,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:32:22,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:22,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 13:32:22,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:32:22,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 13:32:22,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:23,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:23,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:23,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:23,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:23,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:23,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:32:23,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:23,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:23,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:32:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:23,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:23,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:23,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:24,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:24,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 13:32:24,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:24,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 13:32:24,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:24,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 13:32:24,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:24,510 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 23 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:24,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2076493236] [2020-09-25 13:32:24,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:24,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 13:32:24,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402781068] [2020-09-25 13:32:24,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 13:32:24,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:24,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 13:32:24,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:32:24,516 INFO L87 Difference]: Start difference. First operand 715 states and 834 transitions. Second operand 16 states. [2020-09-25 13:32:26,291 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-25 13:32:27,705 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 80 [2020-09-25 13:32:28,031 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 79 [2020-09-25 13:32:28,396 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 78 [2020-09-25 13:32:28,799 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-09-25 13:32:29,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:29,153 INFO L93 Difference]: Finished difference Result 2312 states and 2849 transitions. [2020-09-25 13:32:29,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:32:29,153 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 177 [2020-09-25 13:32:29,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:29,173 INFO L225 Difference]: With dead ends: 2312 [2020-09-25 13:32:29,173 INFO L226 Difference]: Without dead ends: 1616 [2020-09-25 13:32:29,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=212, Invalid=438, Unknown=0, NotChecked=0, Total=650 [2020-09-25 13:32:29,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1616 states. [2020-09-25 13:32:29,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1616 to 1578. [2020-09-25 13:32:29,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1578 states. [2020-09-25 13:32:29,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 1839 transitions. [2020-09-25 13:32:29,262 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 1839 transitions. Word has length 177 [2020-09-25 13:32:29,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:29,272 INFO L479 AbstractCegarLoop]: Abstraction has 1578 states and 1839 transitions. [2020-09-25 13:32:29,272 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 13:32:29,272 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 1839 transitions. [2020-09-25 13:32:29,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2020-09-25 13:32:29,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:29,283 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 13:32:29,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:29,284 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:29,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:29,285 INFO L82 PathProgramCache]: Analyzing trace with hash -144447401, now seen corresponding path program 1 times [2020-09-25 13:32:29,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:29,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588828211] [2020-09-25 13:32:29,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:29,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:29,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:34,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-09-25 13:32:34,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:32:34,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:34,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 13:32:34,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:32:34,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:34,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:34,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:34,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:34,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:34,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 13:32:34,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:34,642 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:34,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:34,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:34,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:34,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:32:34,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:32:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:34,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:34,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:34,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-09-25 13:32:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:34,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:34,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 13:32:34,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:34,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 13:32:34,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:34,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:34,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:32:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:34,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:32:34,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 63 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-25 13:32:35,074 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [588828211] [2020-09-25 13:32:35,074 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:35,075 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:32:35,075 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803668225] [2020-09-25 13:32:35,076 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:32:35,076 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:35,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:32:35,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:32:35,077 INFO L87 Difference]: Start difference. First operand 1578 states and 1839 transitions. Second operand 8 states. [2020-09-25 13:32:38,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:38,122 INFO L93 Difference]: Finished difference Result 3545 states and 4229 transitions. [2020-09-25 13:32:38,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 13:32:38,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 220 [2020-09-25 13:32:38,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:38,134 INFO L225 Difference]: With dead ends: 3545 [2020-09-25 13:32:38,134 INFO L226 Difference]: Without dead ends: 1891 [2020-09-25 13:32:38,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:32:38,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1891 states. [2020-09-25 13:32:38,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1891 to 1874. [2020-09-25 13:32:38,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1874 states. [2020-09-25 13:32:38,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1874 states to 1874 states and 2151 transitions. [2020-09-25 13:32:38,193 INFO L78 Accepts]: Start accepts. Automaton has 1874 states and 2151 transitions. Word has length 220 [2020-09-25 13:32:38,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:38,193 INFO L479 AbstractCegarLoop]: Abstraction has 1874 states and 2151 transitions. [2020-09-25 13:32:38,194 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:32:38,194 INFO L276 IsEmpty]: Start isEmpty. Operand 1874 states and 2151 transitions. [2020-09-25 13:32:38,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-25 13:32:38,201 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:38,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:38,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:38,202 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:38,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:38,203 INFO L82 PathProgramCache]: Analyzing trace with hash -1386493126, now seen corresponding path program 1 times [2020-09-25 13:32:38,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:38,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1615194665] [2020-09-25 13:32:38,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:38,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:38,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:39,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 237 [2020-09-25 13:32:43,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:32:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:32:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:32:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 13:32:43,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-09-25 13:32:43,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:43,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:43,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:43,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:43,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 13:32:43,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 13:32:43,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:43,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:43,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:43,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:43,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:32:43,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:32:43,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-25 13:32:43,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:43,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:32:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:43,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 13:32:43,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:32:44,089 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 72 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:44,089 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1615194665] [2020-09-25 13:32:44,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:44,090 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:32:44,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573403937] [2020-09-25 13:32:44,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:32:44,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:44,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:32:44,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:32:44,091 INFO L87 Difference]: Start difference. First operand 1874 states and 2151 transitions. Second operand 11 states. [2020-09-25 13:32:48,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:48,504 INFO L93 Difference]: Finished difference Result 4736 states and 5597 transitions. [2020-09-25 13:32:48,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:32:48,505 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 226 [2020-09-25 13:32:48,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:48,515 INFO L225 Difference]: With dead ends: 4736 [2020-09-25 13:32:48,515 INFO L226 Difference]: Without dead ends: 1806 [2020-09-25 13:32:48,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=125, Invalid=255, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:32:48,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2020-09-25 13:32:48,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1796. [2020-09-25 13:32:48,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1796 states. [2020-09-25 13:32:48,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1796 states to 1796 states and 2028 transitions. [2020-09-25 13:32:48,579 INFO L78 Accepts]: Start accepts. Automaton has 1796 states and 2028 transitions. Word has length 226 [2020-09-25 13:32:48,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:48,579 INFO L479 AbstractCegarLoop]: Abstraction has 1796 states and 2028 transitions. [2020-09-25 13:32:48,579 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:32:48,579 INFO L276 IsEmpty]: Start isEmpty. Operand 1796 states and 2028 transitions. [2020-09-25 13:32:48,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-09-25 13:32:48,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:48,589 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:48,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:32:48,589 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:48,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:48,590 INFO L82 PathProgramCache]: Analyzing trace with hash 1801715730, now seen corresponding path program 1 times [2020-09-25 13:32:48,590 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:48,591 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105529854] [2020-09-25 13:32:48,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:48,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:48,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking...