/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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_label29.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 09:02:58,521 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 09:02:58,525 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 09:02:58,551 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 09:02:58,552 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 09:02:58,553 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 09:02:58,554 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 09:02:58,556 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 09:02:58,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 09:02:58,559 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 09:02:58,560 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 09:02:58,561 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 09:02:58,561 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 09:02:58,562 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 09:02:58,564 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 09:02:58,565 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 09:02:58,566 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 09:02:58,567 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 09:02:58,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 09:02:58,570 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 09:02:58,572 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 09:02:58,573 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 09:02:58,574 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 09:02:58,575 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 09:02:58,577 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 09:02:58,578 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 09:02:58,578 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 09:02:58,579 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 09:02:58,579 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 09:02:58,580 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 09:02:58,581 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 09:02:58,581 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 09:02:58,582 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 09:02:58,583 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 09:02:58,584 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 09:02:58,585 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 09:02:58,585 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 09:02:58,585 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 09:02:58,586 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 09:02:58,587 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 09:02:58,588 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 09:02:58,588 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 09:02:58,636 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 09:02:58,636 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 09:02:58,638 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 09:02:58,638 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 09:02:58,638 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 09:02:58,638 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 09:02:58,638 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 09:02:58,639 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 09:02:58,639 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 09:02:58,639 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 09:02:58,639 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 09:02:58,639 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 09:02:58,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 09:02:58,643 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 09:02:58,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 09:02:58,643 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 09:02:58,644 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 09:02:58,645 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 09:02:58,645 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 09:02:58,645 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 09:02:58,645 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 09:02:58,646 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 09:02:58,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 09:02:58,646 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 09:02:58,646 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 09:02:58,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 09:02:58,648 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 09:02:58,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 09:02:58,649 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 09:02:58,649 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 09:02:59,133 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 09:02:59,158 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 09:02:59,165 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 09:02:59,167 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 09:02:59,168 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 09:02:59,170 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 09:02:59,254 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91e20e2de/3b0313270e784739bcdb9ef665309cdc/FLAG6f9b3ffd4 [2020-09-25 09:02:59,959 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 09:02:59,960 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label29.c [2020-09-25 09:02:59,977 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91e20e2de/3b0313270e784739bcdb9ef665309cdc/FLAG6f9b3ffd4 [2020-09-25 09:03:00,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/91e20e2de/3b0313270e784739bcdb9ef665309cdc [2020-09-25 09:03:00,202 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 09:03:00,209 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 09:03:00,211 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:00,212 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 09:03:00,216 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 09:03:00,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:00" (1/1) ... [2020-09-25 09:03:00,222 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51b8ea72 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:00, skipping insertion in model container [2020-09-25 09:03:00,222 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 09:03:00" (1/1) ... [2020-09-25 09:03:00,232 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 09:03:00,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 09:03:00,875 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:00,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 09:03:00,988 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 09:03:01,013 INFO L208 MainTranslator]: Completed translation [2020-09-25 09:03:01,020 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01 WrapperNode [2020-09-25 09:03:01,020 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 09:03:01,021 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 09:03:01,022 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 09:03:01,022 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 09:03:01,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,064 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,065 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,105 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,123 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (1/1) ... [2020-09-25 09:03:01,139 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 09:03:01,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 09:03:01,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 09:03:01,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 09:03:01,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (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 09:03:01,224 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 09:03:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 09:03:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 09:03:01,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 09:03:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 09:03:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 09:03:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 09:03:01,225 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 09:03:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 09:03:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 09:03:01,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 09:03:02,620 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 09:03:02,620 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 09:03:02,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:02 BoogieIcfgContainer [2020-09-25 09:03:02,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 09:03:02,639 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 09:03:02,639 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 09:03:02,643 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 09:03:02,643 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 09:03:00" (1/3) ... [2020-09-25 09:03:02,644 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9fabb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:02, skipping insertion in model container [2020-09-25 09:03:02,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 09:03:01" (2/3) ... [2020-09-25 09:03:02,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f9fabb1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 09:03:02, skipping insertion in model container [2020-09-25 09:03:02,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 09:03:02" (3/3) ... [2020-09-25 09:03:02,648 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label29.c [2020-09-25 09:03:02,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 09:03:02,678 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 09:03:02,701 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 09:03:02,748 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 09:03:02,749 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 09:03:02,749 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 09:03:02,749 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 09:03:02,749 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 09:03:02,750 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 09:03:02,750 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 09:03:02,750 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 09:03:02,786 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 09:03:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 09:03:02,810 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:02,812 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] [2020-09-25 09:03:02,812 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:02,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:02,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1835465527, now seen corresponding path program 1 times [2020-09-25 09:03:02,833 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:02,834 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620129730] [2020-09-25 09:03:02,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:03,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:03,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:05,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:07,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:08,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-09-25 09:03:08,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:08,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 09:03:08,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:08,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 09:03:08,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-09-25 09:03:08,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 09:03:08,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:08,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:08,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:08,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:08,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 09:03:08,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:08,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:08,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:08,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 09:03:08,397 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 09:03:08,398 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620129730] [2020-09-25 09:03:08,400 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:08,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 09:03:08,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799292434] [2020-09-25 09:03:08,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 09:03:08,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:08,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 09:03:08,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 09:03:08,436 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 09:03:10,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:10,895 INFO L93 Difference]: Finished difference Result 1387 states and 1841 transitions. [2020-09-25 09:03:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 09:03:10,898 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 128 [2020-09-25 09:03:10,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:10,925 INFO L225 Difference]: With dead ends: 1387 [2020-09-25 09:03:10,925 INFO L226 Difference]: Without dead ends: 779 [2020-09-25 09:03:10,936 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 09:03:10,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2020-09-25 09:03:11,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 659. [2020-09-25 09:03:11,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 659 states. [2020-09-25 09:03:11,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 807 transitions. [2020-09-25 09:03:11,049 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 807 transitions. Word has length 128 [2020-09-25 09:03:11,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:11,051 INFO L479 AbstractCegarLoop]: Abstraction has 659 states and 807 transitions. [2020-09-25 09:03:11,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 09:03:11,051 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 807 transitions. [2020-09-25 09:03:11,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-09-25 09:03:11,061 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:11,062 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 09:03:11,062 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 09:03:11,063 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:11,063 INFO L82 PathProgramCache]: Analyzing trace with hash 1758478109, now seen corresponding path program 1 times [2020-09-25 09:03:11,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:11,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2121588301] [2020-09-25 09:03:11,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:11,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:11,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:11,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:11,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:11,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:13,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:15,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:16,116 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 09:03:16,116 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 09:03:16,116 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 09:03:16,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:16,117 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:16,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 09:03:16,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 09:03:16,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-09-25 09:03:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:16,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:16,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:03:16,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:16,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 09:03:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:16,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:16,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:16,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:16,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:16,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 09:03:16,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:16,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:16,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 09:03:16,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:16,398 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 09:03:16,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2121588301] [2020-09-25 09:03:16,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:16,399 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:03:16,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388719474] [2020-09-25 09:03:16,404 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:03:16,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:16,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:03:16,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:16,405 INFO L87 Difference]: Start difference. First operand 659 states and 807 transitions. Second operand 6 states. [2020-09-25 09:03:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:18,508 INFO L93 Difference]: Finished difference Result 1612 states and 2074 transitions. [2020-09-25 09:03:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 09:03:18,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 146 [2020-09-25 09:03:18,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:18,517 INFO L225 Difference]: With dead ends: 1612 [2020-09-25 09:03:18,517 INFO L226 Difference]: Without dead ends: 975 [2020-09-25 09:03:18,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2020-09-25 09:03:18,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 965. [2020-09-25 09:03:18,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 965 states. [2020-09-25 09:03:18,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 965 states to 965 states and 1216 transitions. [2020-09-25 09:03:18,569 INFO L78 Accepts]: Start accepts. Automaton has 965 states and 1216 transitions. Word has length 146 [2020-09-25 09:03:18,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:18,570 INFO L479 AbstractCegarLoop]: Abstraction has 965 states and 1216 transitions. [2020-09-25 09:03:18,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:03:18,570 INFO L276 IsEmpty]: Start isEmpty. Operand 965 states and 1216 transitions. [2020-09-25 09:03:18,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-09-25 09:03:18,578 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:18,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:18,579 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 09:03:18,579 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:18,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:18,580 INFO L82 PathProgramCache]: Analyzing trace with hash -1227074990, now seen corresponding path program 1 times [2020-09-25 09:03:18,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:18,580 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1346255513] [2020-09-25 09:03:18,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:18,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:18,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:18,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:19,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:21,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:23,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-09-25 09:03:23,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:23,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 09:03:23,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:23,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:23,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:23,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 09:03:23,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 09:03:23,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:23,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:23,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:23,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:23,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:23,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:23,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 09:03:23,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:23,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:23,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:23,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 09:03:23,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:23,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:23,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:23,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:23,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:03:23,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:23,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 09:03:23,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:23,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:23,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:03:23,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:23,989 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 09:03:23,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1346255513] [2020-09-25 09:03:23,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 09:03:23,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 09:03:23,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692771189] [2020-09-25 09:03:23,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 09:03:23,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:23,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 09:03:23,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 09:03:23,995 INFO L87 Difference]: Start difference. First operand 965 states and 1216 transitions. Second operand 7 states. [2020-09-25 09:03:26,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:26,522 INFO L93 Difference]: Finished difference Result 2777 states and 3663 transitions. [2020-09-25 09:03:26,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:03:26,522 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 172 [2020-09-25 09:03:26,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:26,542 INFO L225 Difference]: With dead ends: 2777 [2020-09-25 09:03:26,542 INFO L226 Difference]: Without dead ends: 1834 [2020-09-25 09:03:26,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 09:03:26,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1834 states. [2020-09-25 09:03:26,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1834 to 1731. [2020-09-25 09:03:26,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1731 states. [2020-09-25 09:03:26,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1731 states to 1731 states and 2209 transitions. [2020-09-25 09:03:26,644 INFO L78 Accepts]: Start accepts. Automaton has 1731 states and 2209 transitions. Word has length 172 [2020-09-25 09:03:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:26,645 INFO L479 AbstractCegarLoop]: Abstraction has 1731 states and 2209 transitions. [2020-09-25 09:03:26,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 09:03:26,645 INFO L276 IsEmpty]: Start isEmpty. Operand 1731 states and 2209 transitions. [2020-09-25 09:03:26,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-09-25 09:03:26,658 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:26,659 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 09:03:26,659 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 09:03:26,669 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:26,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:26,670 INFO L82 PathProgramCache]: Analyzing trace with hash -285157092, now seen corresponding path program 1 times [2020-09-25 09:03:26,670 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:26,671 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605244537] [2020-09-25 09:03:26,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:26,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:26,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:26,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:27,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:31,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-09-25 09:03:31,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 09:03:31,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 09:03:31,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:31,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 09:03:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-09-25 09:03:31,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 09:03:31,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:31,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:31,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:31,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:31,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:31,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:03:31,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:31,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:31,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:31,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:31,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:31,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:31,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:31,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:31,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:31,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 09:03:31,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:31,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:31,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:31,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:31,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:03:31,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:31,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:32,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:32,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 09:03:32,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:32,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 09:03:32,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:32,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 09:03:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:32,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 09:03:32,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:32,239 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 41 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 09:03:32,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605244537] [2020-09-25 09:03:32,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:32,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 09:03:32,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884398823] [2020-09-25 09:03:32,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 09:03:32,242 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 09:03:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:03:32,244 INFO L87 Difference]: Start difference. First operand 1731 states and 2209 transitions. Second operand 8 states. [2020-09-25 09:03:36,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:36,388 INFO L93 Difference]: Finished difference Result 5568 states and 7597 transitions. [2020-09-25 09:03:36,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 09:03:36,389 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 184 [2020-09-25 09:03:36,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:36,414 INFO L225 Difference]: With dead ends: 5568 [2020-09-25 09:03:36,414 INFO L226 Difference]: Without dead ends: 3673 [2020-09-25 09:03:36,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-09-25 09:03:36,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3673 states. [2020-09-25 09:03:36,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3673 to 3605. [2020-09-25 09:03:36,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-09-25 09:03:36,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 4493 transitions. [2020-09-25 09:03:36,552 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 4493 transitions. Word has length 184 [2020-09-25 09:03:36,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:36,553 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 4493 transitions. [2020-09-25 09:03:36,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 09:03:36,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 4493 transitions. [2020-09-25 09:03:36,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-09-25 09:03:36,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:36,567 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-09-25 09:03:36,567 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 09:03:36,568 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:36,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:36,568 INFO L82 PathProgramCache]: Analyzing trace with hash 2137284262, now seen corresponding path program 1 times [2020-09-25 09:03:36,568 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:36,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [688388727] [2020-09-25 09:03:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:36,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:36,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:37,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:38,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:39,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:41,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-09-25 09:03:41,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 09:03:41,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 09:03:41,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:41,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 09:03:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-25 09:03:41,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 09:03:41,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:41,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 09:03:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:41,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:41,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 09:03:41,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:41,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 09:03:41,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:41,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 09:03:41,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:41,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 09:03:41,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:41,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 09:03:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:41,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:41,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 09:03:41,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 09:03:41,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 09:03:41,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:41,874 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:41,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 09:03:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 09:03:41,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 09:03:41,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 09:03:41,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 09:03:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:41,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:41,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 09:03:41,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-25 09:03:41,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 09:03:42,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 09:03:42,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 09:03:42,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 09:03:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 09:03:42,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 09:03:42,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-25 09:03:42,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 09:03:42,120 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 16 proven. 30 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 09:03:42,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [688388727] [2020-09-25 09:03:42,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 09:03:42,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 09:03:42,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51876937] [2020-09-25 09:03:42,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 09:03:42,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 09:03:42,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 09:03:42,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 09:03:42,123 INFO L87 Difference]: Start difference. First operand 3605 states and 4493 transitions. Second operand 6 states. [2020-09-25 09:03:44,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 09:03:44,273 INFO L93 Difference]: Finished difference Result 6363 states and 8075 transitions. [2020-09-25 09:03:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 09:03:44,275 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 190 [2020-09-25 09:03:44,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 09:03:44,291 INFO L225 Difference]: With dead ends: 6363 [2020-09-25 09:03:44,291 INFO L226 Difference]: Without dead ends: 2620 [2020-09-25 09:03:44,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 09:03:44,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2620 states. [2020-09-25 09:03:44,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2620 to 2198. [2020-09-25 09:03:44,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2198 states. [2020-09-25 09:03:44,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2198 states to 2198 states and 2621 transitions. [2020-09-25 09:03:44,375 INFO L78 Accepts]: Start accepts. Automaton has 2198 states and 2621 transitions. Word has length 190 [2020-09-25 09:03:44,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 09:03:44,376 INFO L479 AbstractCegarLoop]: Abstraction has 2198 states and 2621 transitions. [2020-09-25 09:03:44,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 09:03:44,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2198 states and 2621 transitions. [2020-09-25 09:03:44,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 09:03:44,384 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 09:03:44,384 INFO L422 BasicCegarLoop]: trace histogram [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, 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 09:03:44,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 09:03:44,385 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 09:03:44,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 09:03:44,385 INFO L82 PathProgramCache]: Analyzing trace with hash -852027348, now seen corresponding path program 1 times [2020-09-25 09:03:44,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 09:03:44,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303266340] [2020-09-25 09:03:44,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 09:03:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 09:03:44,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:44,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:46,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 09:03:47,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking...