/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=0.2 --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/Problem11_label18.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:31:13,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:31:13,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:31:13,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:31:13,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:31:13,538 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:31:13,539 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:31:13,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:31:13,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:31:13,543 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:31:13,544 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:31:13,546 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:31:13,546 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:31:13,547 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:31:13,548 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:31:13,550 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:31:13,550 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:31:13,552 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:31:13,557 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:31:13,559 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:31:13,560 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:31:13,564 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:31:13,565 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:31:13,568 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:31:13,571 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:31:13,571 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:31:13,571 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:31:13,572 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:31:13,573 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:31:13,574 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:31:13,574 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:31:13,575 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:31:13,576 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:31:13,577 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:31:13,578 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:31:13,578 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:31:13,579 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:31:13,580 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:31:13,580 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:31:13,581 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:31:13,582 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:31:13,583 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 04:31:13,609 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:31:13,610 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:31:13,611 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:31:13,611 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:31:13,611 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:31:13,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:31:13,612 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:31:13,612 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:31:13,612 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:31:13,612 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:31:13,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:31:13,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:31:13,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:31:13,613 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:31:13,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:31:13,614 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:31:13,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:31:13,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:31:13,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:31:13,615 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:31:13,615 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:31:13,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:31:13,615 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:31:13,615 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:31:13,616 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:31:13,616 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:31:13,616 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:31:13,616 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:31:13,616 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:31:13,618 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:31:14,118 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:31:14,144 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:31:14,148 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:31:14,150 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:31:14,150 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:31:14,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 04:31:14,229 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6a05718b/4f9ac2385e9940439c8d97638ddbea6c/FLAG4e7b970bd [2020-09-25 04:31:14,931 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:31:14,932 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label18.c [2020-09-25 04:31:14,951 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6a05718b/4f9ac2385e9940439c8d97638ddbea6c/FLAG4e7b970bd [2020-09-25 04:31:15,125 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d6a05718b/4f9ac2385e9940439c8d97638ddbea6c [2020-09-25 04:31:15,142 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:31:15,148 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:31:15,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:15,152 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:31:15,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:31:15,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:15" (1/1) ... [2020-09-25 04:31:15,166 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b9ac829 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:15, skipping insertion in model container [2020-09-25 04:31:15,166 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:31:15" (1/1) ... [2020-09-25 04:31:15,183 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:31:15,266 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:31:16,057 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:16,068 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:31:16,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:31:16,349 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:31:16,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16 WrapperNode [2020-09-25 04:31:16,351 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:31:16,352 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:31:16,352 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:31:16,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:31:16,375 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,377 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,422 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,422 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,525 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (1/1) ... [2020-09-25 04:31:16,593 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:31:16,594 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:31:16,594 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:31:16,594 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:31:16,596 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (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 04:31:16,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:31:16,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:31:16,681 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:31:16,682 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:31:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:31:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:31:16,682 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:31:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:31:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:31:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:31:16,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:31:19,094 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:31:19,095 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:31:19,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:19 BoogieIcfgContainer [2020-09-25 04:31:19,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:31:19,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:31:19,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:31:19,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:31:19,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:31:15" (1/3) ... [2020-09-25 04:31:19,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ecbd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:19, skipping insertion in model container [2020-09-25 04:31:19,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:31:16" (2/3) ... [2020-09-25 04:31:19,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41ecbd8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:31:19, skipping insertion in model container [2020-09-25 04:31:19,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:31:19" (3/3) ... [2020-09-25 04:31:19,118 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem11_label18.c [2020-09-25 04:31:19,130 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:31:19,142 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:31:19,169 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:31:19,210 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:31:19,210 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:31:19,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:31:19,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:31:19,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:31:19,211 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:31:19,211 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:31:19,211 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:31:19,248 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states. [2020-09-25 04:31:19,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 04:31:19,258 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:19,260 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] [2020-09-25 04:31:19,260 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash -123889732, now seen corresponding path program 1 times [2020-09-25 04:31:19,280 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:19,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [515181478] [2020-09-25 04:31:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:19,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:19,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:19,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-25 04:31:20,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:31:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1159 [2020-09-25 04:31:20,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:31:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 04:31:20,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 04:31:20,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 04:31:20,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:20,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:20,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:20,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:20,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:20,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 04:31:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:20,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:20,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:31:20,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:20,796 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 04:31:20,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [515181478] [2020-09-25 04:31:20,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:31:20,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:31:20,802 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728054885] [2020-09-25 04:31:20,809 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:31:20,810 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:20,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:31:20,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:31:20,837 INFO L87 Difference]: Start difference. First operand 813 states. Second operand 4 states. [2020-09-25 04:31:24,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:24,635 INFO L93 Difference]: Finished difference Result 1921 states and 2518 transitions. [2020-09-25 04:31:24,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:31:24,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-09-25 04:31:24,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:24,667 INFO L225 Difference]: With dead ends: 1921 [2020-09-25 04:31:24,668 INFO L226 Difference]: Without dead ends: 1036 [2020-09-25 04:31:24,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:24,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1036 states. [2020-09-25 04:31:24,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1036 to 978. [2020-09-25 04:31:24,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 978 states. [2020-09-25 04:31:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1165 transitions. [2020-09-25 04:31:24,835 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1165 transitions. Word has length 55 [2020-09-25 04:31:24,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:24,836 INFO L479 AbstractCegarLoop]: Abstraction has 978 states and 1165 transitions. [2020-09-25 04:31:24,836 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:31:24,836 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1165 transitions. [2020-09-25 04:31:24,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 04:31:24,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:24,844 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:24,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:31:24,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:24,845 INFO L82 PathProgramCache]: Analyzing trace with hash 497365935, now seen corresponding path program 1 times [2020-09-25 04:31:24,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:24,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752061579] [2020-09-25 04:31:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:24,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:24,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:25,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:26,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:29,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:29,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 04:31:29,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 04:31:29,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 04:31:29,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:29,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 04:31:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:31:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:30,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:30,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:30,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:30,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:30,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:30,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:30,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:30,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:30,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:30,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:30,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:30,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:30,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:31:30,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 04:31:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:30,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:30,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:31:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:30,246 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:30,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752061579] [2020-09-25 04:31:30,247 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:30,247 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:30,248 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729305843] [2020-09-25 04:31:30,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:30,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:30,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:30,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:30,251 INFO L87 Difference]: Start difference. First operand 978 states and 1165 transitions. Second operand 5 states. [2020-09-25 04:31:33,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:33,765 INFO L93 Difference]: Finished difference Result 2001 states and 2457 transitions. [2020-09-25 04:31:33,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:33,767 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 04:31:33,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:33,776 INFO L225 Difference]: With dead ends: 2001 [2020-09-25 04:31:33,776 INFO L226 Difference]: Without dead ends: 1267 [2020-09-25 04:31:33,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1267 states. [2020-09-25 04:31:33,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1267 to 1224. [2020-09-25 04:31:33,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1224 states. [2020-09-25 04:31:33,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1517 transitions. [2020-09-25 04:31:33,837 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1517 transitions. Word has length 137 [2020-09-25 04:31:33,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:33,840 INFO L479 AbstractCegarLoop]: Abstraction has 1224 states and 1517 transitions. [2020-09-25 04:31:33,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:33,840 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1517 transitions. [2020-09-25 04:31:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 04:31:33,854 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:33,854 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:33,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:31:33,855 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:33,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:33,855 INFO L82 PathProgramCache]: Analyzing trace with hash 1536608329, now seen corresponding path program 1 times [2020-09-25 04:31:33,856 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:33,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2091238620] [2020-09-25 04:31:33,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:33,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:33,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:34,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:35,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:38,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:38,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 04:31:38,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:38,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-09-25 04:31:38,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:38,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-09-25 04:31:38,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 04:31:38,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:39,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:39,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:39,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:39,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:39,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 04:31:39,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:39,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:39,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:39,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:39,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:39,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:39,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 04:31:39,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:39,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 04:31:39,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:39,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:39,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:39,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:31:39,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:39,261 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:39,261 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2091238620] [2020-09-25 04:31:39,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:39,262 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:39,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95614860] [2020-09-25 04:31:39,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:39,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:39,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:39,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:39,264 INFO L87 Difference]: Start difference. First operand 1224 states and 1517 transitions. Second operand 5 states. [2020-09-25 04:31:42,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:42,789 INFO L93 Difference]: Finished difference Result 3058 states and 3952 transitions. [2020-09-25 04:31:42,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:42,790 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 04:31:42,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:42,806 INFO L225 Difference]: With dead ends: 3058 [2020-09-25 04:31:42,806 INFO L226 Difference]: Without dead ends: 1851 [2020-09-25 04:31:42,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:31:42,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1851 states. [2020-09-25 04:31:42,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1851 to 1829. [2020-09-25 04:31:42,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1829 states. [2020-09-25 04:31:42,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1829 states to 1829 states and 2302 transitions. [2020-09-25 04:31:42,883 INFO L78 Accepts]: Start accepts. Automaton has 1829 states and 2302 transitions. Word has length 139 [2020-09-25 04:31:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:42,885 INFO L479 AbstractCegarLoop]: Abstraction has 1829 states and 2302 transitions. [2020-09-25 04:31:42,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 1829 states and 2302 transitions. [2020-09-25 04:31:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-09-25 04:31:42,888 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:42,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:31:42,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:31:42,889 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:42,890 INFO L82 PathProgramCache]: Analyzing trace with hash -578651405, now seen corresponding path program 1 times [2020-09-25 04:31:42,890 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:42,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021142979] [2020-09-25 04:31:42,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:42,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:42,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:43,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:44,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:45,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:45,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-25 04:31:45,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:31:45,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3041 [2020-09-25 04:31:45,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:45,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-09-25 04:31:45,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 04:31:45,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:46,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:46,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:46,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:46,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:46,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:31:46,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:46,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:46,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:46,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:46,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:46,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:46,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:46,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:46,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:46,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 04:31:46,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:46,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-09-25 04:31:46,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:46,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:46,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-25 04:31:46,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:46,400 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:31:46,402 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021142979] [2020-09-25 04:31:46,402 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:46,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:31:46,403 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829016046] [2020-09-25 04:31:46,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:31:46,404 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:46,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:31:46,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:31:46,405 INFO L87 Difference]: Start difference. First operand 1829 states and 2302 transitions. Second operand 5 states. [2020-09-25 04:31:50,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:31:50,205 INFO L93 Difference]: Finished difference Result 4854 states and 6341 transitions. [2020-09-25 04:31:50,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:31:50,206 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 166 [2020-09-25 04:31:50,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:31:50,225 INFO L225 Difference]: With dead ends: 4854 [2020-09-25 04:31:50,225 INFO L226 Difference]: Without dead ends: 3042 [2020-09-25 04:31:50,233 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 2 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 04:31:50,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3042 states. [2020-09-25 04:31:50,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3042 to 3008. [2020-09-25 04:31:50,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3008 states. [2020-09-25 04:31:50,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3008 states to 3008 states and 3794 transitions. [2020-09-25 04:31:50,326 INFO L78 Accepts]: Start accepts. Automaton has 3008 states and 3794 transitions. Word has length 166 [2020-09-25 04:31:50,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:31:50,326 INFO L479 AbstractCegarLoop]: Abstraction has 3008 states and 3794 transitions. [2020-09-25 04:31:50,327 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:31:50,327 INFO L276 IsEmpty]: Start isEmpty. Operand 3008 states and 3794 transitions. [2020-09-25 04:31:50,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-09-25 04:31:50,335 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:31:50,335 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, 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, 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] [2020-09-25 04:31:50,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:31:50,336 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:31:50,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:31:50,336 INFO L82 PathProgramCache]: Analyzing trace with hash 865020019, now seen corresponding path program 1 times [2020-09-25 04:31:50,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:31:50,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [437529929] [2020-09-25 04:31:50,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:31:50,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:50,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:50,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:51,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:55,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-09-25 04:31:55,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 04:31:55,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5039 [2020-09-25 04:31:55,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:55,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 99 [2020-09-25 04:31:55,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 04:31:55,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:55,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:31:55,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:55,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:55,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 04:31:55,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:55,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:31:55,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:55,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:31:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:55,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:31:55,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:31:55,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 04:31:55,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:55,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:55,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 04:31:55,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:55,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:31:55,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:55,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:55,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:31:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:31:55,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 04:31:55,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:55,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-09-25 04:31:55,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:31:55,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:31:55,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:31:55,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 04:31:55,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:31:55,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 04:31:55,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:31:55,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:31:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:31:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:31:55,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-09-25 04:31:55,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:31:56,076 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 149 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 04:31:56,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [437529929] [2020-09-25 04:31:56,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:31:56,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:31:56,078 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897611852] [2020-09-25 04:31:56,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:31:56,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:31:56,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:31:56,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:31:56,079 INFO L87 Difference]: Start difference. First operand 3008 states and 3794 transitions. Second operand 7 states. [2020-09-25 04:32:02,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:32:02,022 INFO L93 Difference]: Finished difference Result 6883 states and 9372 transitions. [2020-09-25 04:32:02,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:32:02,027 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 231 [2020-09-25 04:32:02,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:32:02,063 INFO L225 Difference]: With dead ends: 6883 [2020-09-25 04:32:02,064 INFO L226 Difference]: Without dead ends: 4712 [2020-09-25 04:32:02,079 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 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 04:32:02,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4712 states. [2020-09-25 04:32:02,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4712 to 4545. [2020-09-25 04:32:02,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4545 states. [2020-09-25 04:32:02,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4545 states to 4545 states and 5765 transitions. [2020-09-25 04:32:02,236 INFO L78 Accepts]: Start accepts. Automaton has 4545 states and 5765 transitions. Word has length 231 [2020-09-25 04:32:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:32:02,236 INFO L479 AbstractCegarLoop]: Abstraction has 4545 states and 5765 transitions. [2020-09-25 04:32:02,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:32:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 4545 states and 5765 transitions. [2020-09-25 04:32:02,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-09-25 04:32:02,245 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:32:02,246 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, 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, 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] [2020-09-25 04:32:02,246 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:32:02,246 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:32:02,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:32:02,246 INFO L82 PathProgramCache]: Analyzing trace with hash 86533005, now seen corresponding path program 1 times [2020-09-25 04:32:02,247 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:32:02,247 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [565992520] [2020-09-25 04:32:02,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:32:02,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:32:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:32:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking...