/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/Problem01_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:28:56,049 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:28:56,052 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:28:56,078 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:28:56,079 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:28:56,080 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:28:56,081 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:28:56,083 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:28:56,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:28:56,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:28:56,087 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:28:56,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:28:56,089 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:28:56,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:28:56,091 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:28:56,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:28:56,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:28:56,095 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:28:56,097 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:28:56,099 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:28:56,103 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:28:56,104 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:28:56,109 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:28:56,112 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:28:56,114 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:28:56,115 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:28:56,118 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:28:56,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:28:56,120 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:28:56,123 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:28:56,123 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:28:56,124 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:28:56,126 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:28:56,127 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:28:56,128 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:28:56,128 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:28:56,129 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:28:56,130 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:28:56,130 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:28:56,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:28:56,143 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:28:56,144 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 13:28:56,193 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:28:56,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:28:56,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:28:56,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:28:56,196 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:28:56,196 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:28:56,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:28:56,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:28:56,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:28:56,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:28:56,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:28:56,199 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:28:56,199 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:28:56,199 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:28:56,200 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:28:56,200 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:28:56,200 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:28:56,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:28:56,201 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:28:56,201 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:28:56,201 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:28:56,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:28:56,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:28:56,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:28:56,202 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:28:56,202 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:28:56,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:28:56,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:28:56,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:28:56,203 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 13:28:56,695 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:28:56,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:28:56,721 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:28:56,722 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:28:56,723 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:28:56,724 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 13:28:56,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a5d41d1/bdc8b13abed640ec9f836dbbf4acfc6c/FLAGabf53fe32 [2020-09-25 13:28:57,528 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:28:57,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label11.c [2020-09-25 13:28:57,561 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a5d41d1/bdc8b13abed640ec9f836dbbf4acfc6c/FLAGabf53fe32 [2020-09-25 13:28:57,723 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43a5d41d1/bdc8b13abed640ec9f836dbbf4acfc6c [2020-09-25 13:28:57,737 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:28:57,743 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:28:57,745 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:57,745 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:28:57,750 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:28:57,752 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:57" (1/1) ... [2020-09-25 13:28:57,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c906c99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:57, skipping insertion in model container [2020-09-25 13:28:57,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:28:57" (1/1) ... [2020-09-25 13:28:57,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:28:57,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:28:58,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:58,364 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:28:58,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:28:58,597 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:28:58,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58 WrapperNode [2020-09-25 13:28:58,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:28:58,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:28:58,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:28:58,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:28:58,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,635 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,636 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,681 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,698 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,706 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (1/1) ... [2020-09-25 13:28:58,716 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:28:58,717 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:28:58,717 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:28:58,717 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:28:58,719 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (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 13:28:58,808 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:28:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:28:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:28:58,809 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:28:58,809 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:28:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:28:58,810 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:28:58,811 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:28:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:28:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:28:58,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:29:00,212 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:29:00,213 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:29:00,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:00 BoogieIcfgContainer [2020-09-25 13:29:00,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:29:00,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:29:00,226 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:29:00,230 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:29:00,231 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:28:57" (1/3) ... [2020-09-25 13:29:00,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3734f8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:00, skipping insertion in model container [2020-09-25 13:29:00,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:28:58" (2/3) ... [2020-09-25 13:29:00,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3734f8ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:29:00, skipping insertion in model container [2020-09-25 13:29:00,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:29:00" (3/3) ... [2020-09-25 13:29:00,236 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label11.c [2020-09-25 13:29:00,252 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:29:00,266 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:29:00,293 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:29:00,336 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:29:00,337 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:29:00,337 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:29:00,337 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:29:00,337 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:29:00,338 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:29:00,338 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:29:00,338 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:29:00,376 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 13:29:00,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 13:29:00,399 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:00,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:00,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:00,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:00,412 INFO L82 PathProgramCache]: Analyzing trace with hash 149723165, now seen corresponding path program 1 times [2020-09-25 13:29:00,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:00,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [121479932] [2020-09-25 13:29:00,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:00,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:01,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:05,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-25 13:29:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:29:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 13:29:05,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:05,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:05,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:29:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 13:29:05,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 13:29:05,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:29:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:06,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:06,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:06,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:06,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:06,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:06,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 13:29:06,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:06,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:06,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 13:29:06,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:06,205 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 13:29:06,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [121479932] [2020-09-25 13:29:06,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:29:06,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 13:29:06,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973043185] [2020-09-25 13:29:06,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:06,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:06,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:06,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:06,240 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 5 states. [2020-09-25 13:29:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:08,548 INFO L93 Difference]: Finished difference Result 1259 states and 1658 transitions. [2020-09-25 13:29:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:29:08,550 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 137 [2020-09-25 13:29:08,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:08,576 INFO L225 Difference]: With dead ends: 1259 [2020-09-25 13:29:08,577 INFO L226 Difference]: Without dead ends: 685 [2020-09-25 13:29:08,588 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 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 13:29:08,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 685 states. [2020-09-25 13:29:08,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 685 to 603. [2020-09-25 13:29:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 603 states. [2020-09-25 13:29:08,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 603 states to 603 states and 725 transitions. [2020-09-25 13:29:08,696 INFO L78 Accepts]: Start accepts. Automaton has 603 states and 725 transitions. Word has length 137 [2020-09-25 13:29:08,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:08,697 INFO L479 AbstractCegarLoop]: Abstraction has 603 states and 725 transitions. [2020-09-25 13:29:08,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:08,698 INFO L276 IsEmpty]: Start isEmpty. Operand 603 states and 725 transitions. [2020-09-25 13:29:08,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-09-25 13:29:08,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:08,709 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:08,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:29:08,710 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:08,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:08,711 INFO L82 PathProgramCache]: Analyzing trace with hash 1946630892, now seen corresponding path program 1 times [2020-09-25 13:29:08,711 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:08,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915145180] [2020-09-25 13:29:08,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:08,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:08,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:08,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:13,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-09-25 13:29:13,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:29:13,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 13:29:13,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:13,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 13:29:13,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 13:29:13,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:13,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:13,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:13,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:13,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:13,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:13,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:29:13,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:13,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:13,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:13,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:13,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 13:29:13,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:13,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:13,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:13,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:13,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:13,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 13:29:13,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:13,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:13,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:13,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:29:13,980 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:14,030 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:14,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915145180] [2020-09-25 13:29:14,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:14,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:14,032 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768006929] [2020-09-25 13:29:14,035 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:14,036 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:14,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:14,036 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:14,037 INFO L87 Difference]: Start difference. First operand 603 states and 725 transitions. Second operand 5 states. [2020-09-25 13:29:16,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:16,315 INFO L93 Difference]: Finished difference Result 1503 states and 1888 transitions. [2020-09-25 13:29:16,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:16,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 158 [2020-09-25 13:29:16,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:16,328 INFO L225 Difference]: With dead ends: 1503 [2020-09-25 13:29:16,328 INFO L226 Difference]: Without dead ends: 924 [2020-09-25 13:29:16,332 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 13:29:16,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 924 states. [2020-09-25 13:29:16,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 924 to 748. [2020-09-25 13:29:16,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 748 states. [2020-09-25 13:29:16,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 748 states to 748 states and 899 transitions. [2020-09-25 13:29:16,368 INFO L78 Accepts]: Start accepts. Automaton has 748 states and 899 transitions. Word has length 158 [2020-09-25 13:29:16,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:16,369 INFO L479 AbstractCegarLoop]: Abstraction has 748 states and 899 transitions. [2020-09-25 13:29:16,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:16,369 INFO L276 IsEmpty]: Start isEmpty. Operand 748 states and 899 transitions. [2020-09-25 13:29:16,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-09-25 13:29:16,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:16,373 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:16,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:29:16,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:16,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:16,374 INFO L82 PathProgramCache]: Analyzing trace with hash -464697292, now seen corresponding path program 1 times [2020-09-25 13:29:16,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:16,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [158441504] [2020-09-25 13:29:16,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:16,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:16,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:17,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:18,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:19,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-09-25 13:29:21,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 13:29:21,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 13:29:21,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:29:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 13:29:21,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 13:29:21,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:21,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:21,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:21,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:21,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:21,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:21,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:21,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:21,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:21,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:21,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:21,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 13:29:21,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:21,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 13:29:21,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:21,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:21,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:21,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 13:29:21,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:29:21,706 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 17 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:29:21,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [158441504] [2020-09-25 13:29:21,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:21,708 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 13:29:21,708 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700213879] [2020-09-25 13:29:21,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 13:29:21,711 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:21,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 13:29:21,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:29:21,712 INFO L87 Difference]: Start difference. First operand 748 states and 899 transitions. Second operand 5 states. [2020-09-25 13:29:23,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:23,518 INFO L93 Difference]: Finished difference Result 2037 states and 2523 transitions. [2020-09-25 13:29:23,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 13:29:23,551 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-09-25 13:29:23,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:23,559 INFO L225 Difference]: With dead ends: 2037 [2020-09-25 13:29:23,559 INFO L226 Difference]: Without dead ends: 1313 [2020-09-25 13:29:23,565 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 13:29:23,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1313 states. [2020-09-25 13:29:23,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1313 to 1236. [2020-09-25 13:29:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 13:29:23,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1498 transitions. [2020-09-25 13:29:23,626 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1498 transitions. Word has length 167 [2020-09-25 13:29:23,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:23,626 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1498 transitions. [2020-09-25 13:29:23,626 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 13:29:23,627 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1498 transitions. [2020-09-25 13:29:23,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-09-25 13:29:23,636 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:23,636 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:23,637 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:29:23,637 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:23,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:23,638 INFO L82 PathProgramCache]: Analyzing trace with hash -198309891, now seen corresponding path program 1 times [2020-09-25 13:29:23,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:23,639 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548241300] [2020-09-25 13:29:23,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:23,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:23,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:24,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:25,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:26,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:28,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-09-25 13:29:28,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:29:28,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-25 13:29:28,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:28,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:29:28,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-25 13:29:28,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-09-25 13:29:28,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:28,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:28,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:28,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:28,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:28,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:28,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:29:28,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:28,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:28,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:28,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:28,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:28,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:28,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:28,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:28,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:28,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:29:28,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:28,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:28,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:28,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:28,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:28,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:28,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:29:29,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:29,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 13:29:29,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:29,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:29,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:29,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 13:29:29,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:29,350 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 40 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 13:29:29,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548241300] [2020-09-25 13:29:29,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:29,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:29:29,353 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920130163] [2020-09-25 13:29:29,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:29:29,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:29,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:29:29,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:29:29,356 INFO L87 Difference]: Start difference. First operand 1236 states and 1498 transitions. Second operand 11 states. [2020-09-25 13:29:33,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:33,004 INFO L93 Difference]: Finished difference Result 3139 states and 3987 transitions. [2020-09-25 13:29:33,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:29:33,005 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 195 [2020-09-25 13:29:33,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:33,013 INFO L225 Difference]: With dead ends: 3139 [2020-09-25 13:29:33,014 INFO L226 Difference]: Without dead ends: 1691 [2020-09-25 13:29:33,020 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:29:33,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1691 states. [2020-09-25 13:29:33,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1691 to 1534. [2020-09-25 13:29:33,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1534 states. [2020-09-25 13:29:33,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1534 states to 1534 states and 1849 transitions. [2020-09-25 13:29:33,082 INFO L78 Accepts]: Start accepts. Automaton has 1534 states and 1849 transitions. Word has length 195 [2020-09-25 13:29:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:33,083 INFO L479 AbstractCegarLoop]: Abstraction has 1534 states and 1849 transitions. [2020-09-25 13:29:33,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:29:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 1534 states and 1849 transitions. [2020-09-25 13:29:33,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 13:29:33,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:33,091 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:29:33,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:29:33,092 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:33,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:33,092 INFO L82 PathProgramCache]: Analyzing trace with hash 1494688331, now seen corresponding path program 1 times [2020-09-25 13:29:33,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:33,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1211657473] [2020-09-25 13:29:33,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:33,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:33,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:34,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:36,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:38,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 13:29:38,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 13:29:38,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-09-25 13:29:38,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:38,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:29:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-25 13:29:38,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-09-25 13:29:38,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:29:38,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:29:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:38,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:38,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:38,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:29:38,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:38,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 13:29:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:38,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:38,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:38,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-25 13:29:38,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:38,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 13:29:38,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:38,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:29:38,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:29:38,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 13:29:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:29:38,990 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 13:29:38,991 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1211657473] [2020-09-25 13:29:38,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:29:38,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 13:29:38,992 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694261366] [2020-09-25 13:29:38,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 13:29:38,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:29:38,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 13:29:38,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:29:38,994 INFO L87 Difference]: Start difference. First operand 1534 states and 1849 transitions. Second operand 11 states. [2020-09-25 13:29:44,368 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-09-25 13:29:45,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:29:45,032 INFO L93 Difference]: Finished difference Result 6075 states and 7762 transitions. [2020-09-25 13:29:45,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 13:29:45,036 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 215 [2020-09-25 13:29:45,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:29:45,056 INFO L225 Difference]: With dead ends: 6075 [2020-09-25 13:29:45,056 INFO L226 Difference]: Without dead ends: 4173 [2020-09-25 13:29:45,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=113, Invalid=193, Unknown=0, NotChecked=0, Total=306 [2020-09-25 13:29:45,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4173 states. [2020-09-25 13:29:45,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4173 to 3474. [2020-09-25 13:29:45,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3474 states. [2020-09-25 13:29:45,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3474 states to 3474 states and 4203 transitions. [2020-09-25 13:29:45,167 INFO L78 Accepts]: Start accepts. Automaton has 3474 states and 4203 transitions. Word has length 215 [2020-09-25 13:29:45,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:29:45,167 INFO L479 AbstractCegarLoop]: Abstraction has 3474 states and 4203 transitions. [2020-09-25 13:29:45,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 13:29:45,167 INFO L276 IsEmpty]: Start isEmpty. Operand 3474 states and 4203 transitions. [2020-09-25 13:29:45,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2020-09-25 13:29:45,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:29:45,181 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:29:45,181 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:29:45,182 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:29:45,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:29:45,182 INFO L82 PathProgramCache]: Analyzing trace with hash 2042940029, now seen corresponding path program 1 times [2020-09-25 13:29:45,182 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:29:45,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1427564699] [2020-09-25 13:29:45,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:29:45,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:29:45,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:45,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:46,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:29:48,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking...