/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:32:22,008 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:32:22,013 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:32:22,058 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:32:22,058 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:32:22,066 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:32:22,068 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:32:22,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:32:22,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:32:22,077 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:32:22,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:32:22,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:32:22,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:32:22,082 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:32:22,085 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:32:22,086 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:32:22,089 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:32:22,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:32:22,092 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:32:22,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:32:22,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:32:22,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:32:22,106 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:32:22,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:32:22,119 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:32:22,124 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:32:22,124 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:32:22,125 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:32:22,126 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:32:22,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:32:22,130 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:32:22,131 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:32:22,132 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:32:22,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:32:22,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:32:22,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:32:22,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:32:22,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:32:22,138 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:32:22,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:32:22,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:32:22,142 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:32:22,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:32:22,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:32:22,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:32:22,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:32:22,191 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:32:22,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:32:22,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:32:22,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:32:22,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:32:22,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:32:22,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:32:22,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:32:22,194 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:32:22,194 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:32:22,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:32:22,195 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:32:22,195 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:32:22,195 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:32:22,195 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:32:22,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:32:22,196 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:32:22,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:22,196 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:32:22,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:32:22,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:32:22,197 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:32:22,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:32:22,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:32:22,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:32:22,197 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:32:22,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:32:22,723 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:32:22,728 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:32:22,730 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:32:22,731 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:32:22,732 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 13:32:22,825 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0817319a0/db79a438f19849de96aeefed50f380fa/FLAG9dae5bc73 [2020-09-25 13:32:23,448 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:32:23,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label40.c [2020-09-25 13:32:23,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0817319a0/db79a438f19849de96aeefed50f380fa/FLAG9dae5bc73 [2020-09-25 13:32:23,690 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0817319a0/db79a438f19849de96aeefed50f380fa [2020-09-25 13:32:23,707 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:32:23,716 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:32:23,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:23,720 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:32:23,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:32:23,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:23" (1/1) ... [2020-09-25 13:32:23,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f80c2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:23, skipping insertion in model container [2020-09-25 13:32:23,732 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:32:23" (1/1) ... [2020-09-25 13:32:23,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:32:23,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:32:24,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:24,247 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:32:24,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:32:24,545 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:32:24,547 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24 WrapperNode [2020-09-25 13:32:24,547 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:32:24,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:32:24,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:32:24,549 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:32:24,563 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,563 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,582 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,623 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,641 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,648 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... [2020-09-25 13:32:24,666 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:32:24,667 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:32:24,667 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:32:24,667 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:32:24,670 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:32:24,774 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:32:24,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:32:24,775 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:32:24,775 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:32:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:32:24,775 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:32:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:32:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:32:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:32:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:32:24,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:32:26,076 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:32:26,076 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:32:26,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:26 BoogieIcfgContainer [2020-09-25 13:32:26,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:32:26,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:32:26,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:32:26,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:32:26,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:32:23" (1/3) ... [2020-09-25 13:32:26,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:26, skipping insertion in model container [2020-09-25 13:32:26,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:32:24" (2/3) ... [2020-09-25 13:32:26,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c445f89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:32:26, skipping insertion in model container [2020-09-25 13:32:26,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:32:26" (3/3) ... [2020-09-25 13:32:26,096 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label40.c [2020-09-25 13:32:26,108 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:32:26,119 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:32:26,143 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:32:26,178 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:32:26,178 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:32:26,179 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:32:26,179 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:32:26,179 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:32:26,179 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:32:26,179 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:32:26,179 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:32:26,221 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 13:32:26,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 13:32:26,241 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:26,242 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] [2020-09-25 13:32:26,243 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:26,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:26,251 INFO L82 PathProgramCache]: Analyzing trace with hash 632775426, now seen corresponding path program 1 times [2020-09-25 13:32:26,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:26,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [11241220] [2020-09-25 13:32:26,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:26,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:26,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:26,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:27,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:29,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:30,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:31,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-25 13:32:31,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:32:31,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:32:31,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:31,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:32:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 13:32:31,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-25 13:32:31,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:31,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:31,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:31,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:31,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:31,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:31,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:31,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 13:32:31,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:31,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:31,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:31,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 13:32:31,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:31,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:31,775 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [11241220] [2020-09-25 13:32:31,777 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:32:31,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:32:31,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741359399] [2020-09-25 13:32:31,789 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:32:31,790 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:31,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:32:31,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:32:31,811 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 13:32:34,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:34,044 INFO L93 Difference]: Finished difference Result 1386 states and 1837 transitions. [2020-09-25 13:32:34,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:32:34,048 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 115 [2020-09-25 13:32:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:34,098 INFO L225 Difference]: With dead ends: 1386 [2020-09-25 13:32:34,098 INFO L226 Difference]: Without dead ends: 787 [2020-09-25 13:32:34,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2020-09-25 13:32:34,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 733. [2020-09-25 13:32:34,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 733 states. [2020-09-25 13:32:34,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 884 transitions. [2020-09-25 13:32:34,236 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 884 transitions. Word has length 115 [2020-09-25 13:32:34,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:34,237 INFO L479 AbstractCegarLoop]: Abstraction has 733 states and 884 transitions. [2020-09-25 13:32:34,238 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:32:34,238 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 884 transitions. [2020-09-25 13:32:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-25 13:32:34,248 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:34,249 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] [2020-09-25 13:32:34,249 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:32:34,249 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:34,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:34,250 INFO L82 PathProgramCache]: Analyzing trace with hash -1507069906, now seen corresponding path program 1 times [2020-09-25 13:32:34,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:34,251 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569166692] [2020-09-25 13:32:34,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:34,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:36,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:37,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:39,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:39,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-25 13:32:39,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:32:39,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 13:32:39,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:39,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:39,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:39,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 13:32:39,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-25 13:32:39,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:32:39,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:39,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:39,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:39,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:39,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:39,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 13:32:39,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:39,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:39,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:39,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:39,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:39,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:39,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:39,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:39,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:39,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:39,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 13:32:39,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:39,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:39,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:39,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:32:39,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:39,581 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:39,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569166692] [2020-09-25 13:32:39,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:39,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:39,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792545811] [2020-09-25 13:32:39,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:39,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:39,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:39,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:39,586 INFO L87 Difference]: Start difference. First operand 733 states and 884 transitions. Second operand 5 states. [2020-09-25 13:32:42,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:42,136 INFO L93 Difference]: Finished difference Result 1900 states and 2381 transitions. [2020-09-25 13:32:42,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:42,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 133 [2020-09-25 13:32:42,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:42,153 INFO L225 Difference]: With dead ends: 1900 [2020-09-25 13:32:42,153 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 13:32:42,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:32:42,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 13:32:42,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1055. [2020-09-25 13:32:42,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1055 states. [2020-09-25 13:32:42,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1055 states to 1055 states and 1308 transitions. [2020-09-25 13:32:42,219 INFO L78 Accepts]: Start accepts. Automaton has 1055 states and 1308 transitions. Word has length 133 [2020-09-25 13:32:42,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:42,220 INFO L479 AbstractCegarLoop]: Abstraction has 1055 states and 1308 transitions. [2020-09-25 13:32:42,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:42,220 INFO L276 IsEmpty]: Start isEmpty. Operand 1055 states and 1308 transitions. [2020-09-25 13:32:42,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-09-25 13:32:42,228 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:42,229 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:42,229 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:32:42,229 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:42,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:42,230 INFO L82 PathProgramCache]: Analyzing trace with hash -2051843805, now seen corresponding path program 1 times [2020-09-25 13:32:42,230 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:42,231 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624154441] [2020-09-25 13:32:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:43,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:46,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:46,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-09-25 13:32:46,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:46,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4651 [2020-09-25 13:32:46,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:46,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:46,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:32:46,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 13:32:46,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-09-25 13:32:46,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:47,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:47,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:47,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:47,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:47,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:47,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:32:47,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:47,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:47,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:47,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:32:47,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:47,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:47,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:47,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 13:32:47,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:47,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-25 13:32:47,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:47,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:47,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:32:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:47,301 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:32:47,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624154441] [2020-09-25 13:32:47,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:47,303 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:32:47,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865188465] [2020-09-25 13:32:47,305 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:32:47,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:47,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:32:47,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:32:47,307 INFO L87 Difference]: Start difference. First operand 1055 states and 1308 transitions. Second operand 5 states. [2020-09-25 13:32:49,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:49,436 INFO L93 Difference]: Finished difference Result 2737 states and 3595 transitions. [2020-09-25 13:32:49,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:32:49,438 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-09-25 13:32:49,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:49,453 INFO L225 Difference]: With dead ends: 2737 [2020-09-25 13:32:49,453 INFO L226 Difference]: Without dead ends: 1704 [2020-09-25 13:32:49,459 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 13:32:49,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2020-09-25 13:32:49,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1664. [2020-09-25 13:32:49,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1664 states. [2020-09-25 13:32:49,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2048 transitions. [2020-09-25 13:32:49,524 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2048 transitions. Word has length 139 [2020-09-25 13:32:49,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:49,525 INFO L479 AbstractCegarLoop]: Abstraction has 1664 states and 2048 transitions. [2020-09-25 13:32:49,525 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:32:49,525 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2048 transitions. [2020-09-25 13:32:49,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-09-25 13:32:49,533 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:49,533 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:49,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:32:49,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:49,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:49,534 INFO L82 PathProgramCache]: Analyzing trace with hash 79526696, now seen corresponding path program 1 times [2020-09-25 13:32:49,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:49,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408962957] [2020-09-25 13:32:49,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:49,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:49,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:50,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:54,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:54,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-09-25 13:32:54,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:32:54,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:32:54,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:54,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 13:32:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-25 13:32:54,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 13:32:54,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:55,087 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 38 [2020-09-25 13:32:55,215 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 34 [2020-09-25 13:32:55,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:32:55,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:55,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:32:55,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:55,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 13:32:55,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:55,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:55,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:55,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:55,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:55,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:32:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:55,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:32:55,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:55,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:32:55,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:55,662 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:32:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:55,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:32:55,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:55,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:32:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:55,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:32:55,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-09-25 13:32:55,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:32:55,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 13:32:55,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:32:55,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:32:55,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:32:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:32:55,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:32:55,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:32:55,887 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:32:55,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408962957] [2020-09-25 13:32:55,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:32:55,889 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:32:55,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782237049] [2020-09-25 13:32:55,891 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:32:55,892 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:32:55,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:32:55,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:32:55,895 INFO L87 Difference]: Start difference. First operand 1664 states and 2048 transitions. Second operand 12 states. [2020-09-25 13:32:56,832 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 97 [2020-09-25 13:32:59,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:32:59,459 INFO L93 Difference]: Finished difference Result 3726 states and 4776 transitions. [2020-09-25 13:32:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 13:32:59,459 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 153 [2020-09-25 13:32:59,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:32:59,471 INFO L225 Difference]: With dead ends: 3726 [2020-09-25 13:32:59,472 INFO L226 Difference]: Without dead ends: 1672 [2020-09-25 13:32:59,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=230, Invalid=526, Unknown=0, NotChecked=0, Total=756 [2020-09-25 13:32:59,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1672 states. [2020-09-25 13:32:59,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1672 to 1632. [2020-09-25 13:32:59,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1632 states. [2020-09-25 13:32:59,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1632 states to 1632 states and 1996 transitions. [2020-09-25 13:32:59,541 INFO L78 Accepts]: Start accepts. Automaton has 1632 states and 1996 transitions. Word has length 153 [2020-09-25 13:32:59,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:32:59,541 INFO L479 AbstractCegarLoop]: Abstraction has 1632 states and 1996 transitions. [2020-09-25 13:32:59,541 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:32:59,541 INFO L276 IsEmpty]: Start isEmpty. Operand 1632 states and 1996 transitions. [2020-09-25 13:32:59,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:32:59,548 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:32:59,549 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:32:59,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:32:59,549 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:32:59,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:32:59,550 INFO L82 PathProgramCache]: Analyzing trace with hash -240738087, now seen corresponding path program 1 times [2020-09-25 13:32:59,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:32:59,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622464218] [2020-09-25 13:32:59,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:32:59,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:32:59,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:32:59,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:04,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:04,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 13:33:04,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:04,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-25 13:33:04,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:04,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:33:04,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 13:33:04,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 13:33:04,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:05,178 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 40 [2020-09-25 13:33:05,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:05,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:05,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:05,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:33:05,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:33:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:05,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 13:33:05,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:05,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:33:05,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:05,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:05,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:33:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:05,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:33:05,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:05,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 13:33:05,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:05,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:05,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:05,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 13:33:05,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:05,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 13:33:05,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:05,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:33:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:05,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:33:05,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:05,910 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 13:33:05,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622464218] [2020-09-25 13:33:05,911 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:05,911 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 13:33:05,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631129914] [2020-09-25 13:33:05,912 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 13:33:05,912 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:05,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 13:33:05,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:33:05,913 INFO L87 Difference]: Start difference. First operand 1632 states and 1996 transitions. Second operand 13 states. [2020-09-25 13:33:06,623 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 103 [2020-09-25 13:33:07,045 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 97 [2020-09-25 13:33:08,108 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 97 DAG size of output: 94 [2020-09-25 13:33:08,474 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 91 [2020-09-25 13:33:09,105 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 86 [2020-09-25 13:33:10,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:10,199 INFO L93 Difference]: Finished difference Result 4181 states and 5473 transitions. [2020-09-25 13:33:10,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:33:10,200 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 158 [2020-09-25 13:33:10,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:10,213 INFO L225 Difference]: With dead ends: 4181 [2020-09-25 13:33:10,213 INFO L226 Difference]: Without dead ends: 2253 [2020-09-25 13:33:10,222 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:33:10,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2253 states. [2020-09-25 13:33:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2253 to 2195. [2020-09-25 13:33:10,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2195 states. [2020-09-25 13:33:10,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2195 states to 2195 states and 2628 transitions. [2020-09-25 13:33:10,286 INFO L78 Accepts]: Start accepts. Automaton has 2195 states and 2628 transitions. Word has length 158 [2020-09-25 13:33:10,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:10,287 INFO L479 AbstractCegarLoop]: Abstraction has 2195 states and 2628 transitions. [2020-09-25 13:33:10,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 13:33:10,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2195 states and 2628 transitions. [2020-09-25 13:33:10,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:33:10,295 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:10,295 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:33:10,295 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:33:10,295 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:10,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:10,296 INFO L82 PathProgramCache]: Analyzing trace with hash 1265978914, now seen corresponding path program 1 times [2020-09-25 13:33:10,296 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:10,296 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [588240014] [2020-09-25 13:33:10,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:10,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking...