/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 SequenceOfStatements --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=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:15:38,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:15:38,182 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:15:38,207 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:15:38,208 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:15:38,209 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:15:38,211 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:15:38,213 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:15:38,215 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:15:38,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:15:38,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:15:38,219 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:15:38,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:15:38,220 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:15:38,221 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:15:38,223 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:15:38,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:15:38,225 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:15:38,227 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:15:38,229 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:15:38,231 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:15:38,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:15:38,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:15:38,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:15:38,238 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:15:38,239 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:15:38,239 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:15:38,240 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:15:38,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:15:38,242 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:15:38,242 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:15:38,243 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:15:38,244 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:15:38,245 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:15:38,246 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:15:38,246 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:15:38,247 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:15:38,248 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:15:38,248 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:15:38,249 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:15:38,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:15:38,251 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 [2020-10-14 21:15:38,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:15:38,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:15:38,277 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:15:38,278 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:15:38,278 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:15:38,278 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:15:38,278 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:15:38,278 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:15:38,279 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:15:38,279 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:15:38,279 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:15:38,279 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:15:38,279 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:15:38,280 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:15:38,280 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:15:38,280 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:15:38,280 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:15:38,280 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:15:38,281 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:15:38,281 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:15:38,281 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:15:38,281 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:15:38,281 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:15:38,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:15:38,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:15:38,282 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:15:38,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:15:38,282 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:15:38,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:15:38,283 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 -> SequenceOfStatements 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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=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=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 21:15:38,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:15:38,606 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:15:38,610 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:15:38,612 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:15:38,613 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:15:38,614 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-14 21:15:38,690 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52349b0f8/20bba2baf204423ab3361a6802486967/FLAG9c24c55e0 [2020-10-14 21:15:39,492 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:15:39,493 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label41.c [2020-10-14 21:15:39,539 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52349b0f8/20bba2baf204423ab3361a6802486967/FLAG9c24c55e0 [2020-10-14 21:15:39,995 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/52349b0f8/20bba2baf204423ab3361a6802486967 [2020-10-14 21:15:40,007 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:15:40,009 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:15:40,010 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:15:40,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:15:40,015 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:15:40,016 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:39" (1/1) ... [2020-10-14 21:15:40,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@363f8acd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:40, skipping insertion in model container [2020-10-14 21:15:40,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:15:39" (1/1) ... [2020-10-14 21:15:40,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:15:40,185 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:15:42,032 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:15:42,040 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:15:42,970 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:15:43,005 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:15:43,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43 WrapperNode [2020-10-14 21:15:43,006 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:15:43,007 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:15:43,007 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:15:43,007 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:15:43,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,220 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,291 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (1/1) ... [2020-10-14 21:15:43,323 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:15:43,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:15:43,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:15:43,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:15:43,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (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 [2020-10-14 21:15:43,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:15:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:15:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:15:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:15:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:15:43,416 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:15:43,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:15:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:15:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:15:43,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:15:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:15:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:15:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:15:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:15:43,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:15:43,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:15:43,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:15:48,804 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:15:48,804 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:15:48,815 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:48 BoogieIcfgContainer [2020-10-14 21:15:48,815 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:15:48,817 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:15:48,817 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:15:48,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:15:48,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:15:39" (1/3) ... [2020-10-14 21:15:48,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5bf037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:48, skipping insertion in model container [2020-10-14 21:15:48,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:15:43" (2/3) ... [2020-10-14 21:15:48,823 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5bf037 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:15:48, skipping insertion in model container [2020-10-14 21:15:48,823 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:15:48" (3/3) ... [2020-10-14 21:15:48,825 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label41.c [2020-10-14 21:15:48,838 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:15:48,847 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:15:48,868 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:15:48,903 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:15:48,903 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:15:48,903 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:15:48,903 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:15:48,904 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:15:48,904 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:15:48,904 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:15:48,904 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:15:48,944 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:15:48,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-14 21:15:48,955 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:48,957 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] [2020-10-14 21:15:48,958 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:48,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:48,967 INFO L82 PathProgramCache]: Analyzing trace with hash -602243931, now seen corresponding path program 1 times [2020-10-14 21:15:48,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:48,980 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1544755147] [2020-10-14 21:15:48,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:49,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-14 21:15:49,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:49,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-14 21:15:49,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:15:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:15:49,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-14 21:15:49,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:15:49,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:15:49,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:49,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:15:49,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:15:49,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:15:49,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:15:49,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:15:49,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:15:49,800 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:15:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:15:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:15:49,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:15:49,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:15:49,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:15:49,820 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1544755147] [2020-10-14 21:15:49,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:15:49,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:15:49,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540372223] [2020-10-14 21:15:49,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:15:49,829 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:15:49,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:15:49,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:15:49,846 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:15:59,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:15:59,335 INFO L93 Difference]: Finished difference Result 2487 states and 4748 transitions. [2020-10-14 21:15:59,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:15:59,338 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-14 21:15:59,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:15:59,374 INFO L225 Difference]: With dead ends: 2487 [2020-10-14 21:15:59,375 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:15:59,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:15:59,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:15:59,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1564. [2020-10-14 21:15:59,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1564 states. [2020-10-14 21:15:59,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1564 states to 1564 states and 2484 transitions. [2020-10-14 21:15:59,572 INFO L78 Accepts]: Start accepts. Automaton has 1564 states and 2484 transitions. Word has length 58 [2020-10-14 21:15:59,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:15:59,576 INFO L479 AbstractCegarLoop]: Abstraction has 1564 states and 2484 transitions. [2020-10-14 21:15:59,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:15:59,577 INFO L276 IsEmpty]: Start isEmpty. Operand 1564 states and 2484 transitions. [2020-10-14 21:15:59,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-14 21:15:59,595 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:15:59,596 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:15:59,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:15:59,597 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:15:59,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:15:59,597 INFO L82 PathProgramCache]: Analyzing trace with hash -1897209019, now seen corresponding path program 1 times [2020-10-14 21:15:59,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:15:59,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022248210] [2020-10-14 21:15:59,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:15:59,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:15:59,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:00,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:01,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:01,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-10-14 21:16:01,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:01,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1326 [2020-10-14 21:16:01,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:01,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:01,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:01,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:16:01,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 21:16:01,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:01,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:01,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:01,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:01,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:01,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:01,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-14 21:16:01,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:01,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:01,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:01,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:01,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:16:01,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:01,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:01,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:01,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:01,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:16:01,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:01,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-14 21:16:01,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:01,363 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:01,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:01,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:16:01,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:16:01,509 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:16:01,510 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022248210] [2020-10-14 21:16:01,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:16:01,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:16:01,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525320425] [2020-10-14 21:16:01,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:01,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:01,515 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:01,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:01,515 INFO L87 Difference]: Start difference. First operand 1564 states and 2484 transitions. Second operand 7 states. [2020-10-14 21:16:13,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:13,774 INFO L93 Difference]: Finished difference Result 4768 states and 7606 transitions. [2020-10-14 21:16:13,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:16:13,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-10-14 21:16:13,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:13,794 INFO L225 Difference]: With dead ends: 4768 [2020-10-14 21:16:13,795 INFO L226 Difference]: Without dead ends: 3210 [2020-10-14 21:16:13,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3210 states. [2020-10-14 21:16:13,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3210 to 3163. [2020-10-14 21:16:13,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3163 states. [2020-10-14 21:16:13,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3163 states to 3163 states and 4586 transitions. [2020-10-14 21:16:13,895 INFO L78 Accepts]: Start accepts. Automaton has 3163 states and 4586 transitions. Word has length 137 [2020-10-14 21:16:13,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:13,895 INFO L479 AbstractCegarLoop]: Abstraction has 3163 states and 4586 transitions. [2020-10-14 21:16:13,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:13,896 INFO L276 IsEmpty]: Start isEmpty. Operand 3163 states and 4586 transitions. [2020-10-14 21:16:13,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-14 21:16:13,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:13,899 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:13,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:16:13,900 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:13,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:13,900 INFO L82 PathProgramCache]: Analyzing trace with hash 2032257840, now seen corresponding path program 1 times [2020-10-14 21:16:13,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:13,901 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [70257988] [2020-10-14 21:16:13,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:13,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:13,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:14,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:15,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-14 21:16:15,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:16:15,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1277 [2020-10-14 21:16:15,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:15,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:16:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:15,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-14 21:16:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:15,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:15,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:15,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:15,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:15,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:15,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-14 21:16:15,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:15,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:15,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:15,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:15,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:15,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:15,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:15,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:15,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:15,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-14 21:16:15,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:15,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-14 21:16:15,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:15,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:16:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 47 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:16:15,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [70257988] [2020-10-14 21:16:15,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:16:15,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:16:15,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514786724] [2020-10-14 21:16:15,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:16:15,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:15,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:16:15,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:16:15,849 INFO L87 Difference]: Start difference. First operand 3163 states and 4586 transitions. Second operand 6 states. [2020-10-14 21:16:30,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:30,758 INFO L93 Difference]: Finished difference Result 12609 states and 18842 transitions. [2020-10-14 21:16:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:16:30,764 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 166 [2020-10-14 21:16:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:30,822 INFO L225 Difference]: With dead ends: 12609 [2020-10-14 21:16:30,823 INFO L226 Difference]: Without dead ends: 9452 [2020-10-14 21:16:30,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:16:30,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9452 states. [2020-10-14 21:16:31,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9452 to 9448. [2020-10-14 21:16:31,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9448 states. [2020-10-14 21:16:31,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9448 states to 9448 states and 12914 transitions. [2020-10-14 21:16:31,173 INFO L78 Accepts]: Start accepts. Automaton has 9448 states and 12914 transitions. Word has length 166 [2020-10-14 21:16:31,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:31,180 INFO L479 AbstractCegarLoop]: Abstraction has 9448 states and 12914 transitions. [2020-10-14 21:16:31,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:16:31,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9448 states and 12914 transitions. [2020-10-14 21:16:31,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-14 21:16:31,186 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:31,187 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:31,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:16:31,187 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:31,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:31,188 INFO L82 PathProgramCache]: Analyzing trace with hash 525719777, now seen corresponding path program 1 times [2020-10-14 21:16:31,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:31,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601529063] [2020-10-14 21:16:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:31,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:31,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-14 21:16:32,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-14 21:16:32,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:16:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:32,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:32,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:32,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:32,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:32,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:32,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-14 21:16:32,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:32,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:32,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:32,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:32,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:32,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:32,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:33,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:33,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:16:33,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:33,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-10-14 21:16:33,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:33,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:33,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:16:33,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:33,140 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:16:33,142 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601529063] [2020-10-14 21:16:33,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:16:33,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:16:33,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837494634] [2020-10-14 21:16:33,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:33,145 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:33,145 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:33,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:33,146 INFO L87 Difference]: Start difference. First operand 9448 states and 12914 transitions. Second operand 7 states. [2020-10-14 21:16:47,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:16:47,908 INFO L93 Difference]: Finished difference Result 28685 states and 41373 transitions. [2020-10-14 21:16:47,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:16:47,910 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 171 [2020-10-14 21:16:47,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:16:48,018 INFO L225 Difference]: With dead ends: 28685 [2020-10-14 21:16:48,018 INFO L226 Difference]: Without dead ends: 19243 [2020-10-14 21:16:48,051 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:16:48,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19243 states. [2020-10-14 21:16:48,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19243 to 19138. [2020-10-14 21:16:48,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19138 states. [2020-10-14 21:16:48,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19138 states to 19138 states and 27025 transitions. [2020-10-14 21:16:48,621 INFO L78 Accepts]: Start accepts. Automaton has 19138 states and 27025 transitions. Word has length 171 [2020-10-14 21:16:48,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:16:48,622 INFO L479 AbstractCegarLoop]: Abstraction has 19138 states and 27025 transitions. [2020-10-14 21:16:48,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:16:48,622 INFO L276 IsEmpty]: Start isEmpty. Operand 19138 states and 27025 transitions. [2020-10-14 21:16:48,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-14 21:16:48,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:16:48,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:16:48,631 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:16:48,631 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:16:48,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:16:48,632 INFO L82 PathProgramCache]: Analyzing trace with hash -102410084, now seen corresponding path program 1 times [2020-10-14 21:16:48,632 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:16:48,632 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141278354] [2020-10-14 21:16:48,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:16:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:49,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:50,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:50,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 266 [2020-10-14 21:16:50,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:16:50,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1808 [2020-10-14 21:16:50,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:50,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:16:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:16:50,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 204 [2020-10-14 21:16:50,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:50,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:16:50,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:50,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:50,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:50,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:16:50,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:50,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-14 21:16:50,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:50,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:16:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:16:50,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:16:50,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:16:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:16:50,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:16:50,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:16:51,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:16:51,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-14 21:16:51,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:16:51,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-14 21:16:51,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:16:51,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:16:51,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:16:51,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:16:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 199 [2020-10-14 21:16:51,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-14 21:16:51,502 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:16:51,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141278354] [2020-10-14 21:16:51,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:16:51,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:16:51,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720808643] [2020-10-14 21:16:51,504 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:16:51,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:16:51,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:16:51,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:16:51,505 INFO L87 Difference]: Start difference. First operand 19138 states and 27025 transitions. Second operand 7 states. [2020-10-14 21:17:05,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:05,143 INFO L93 Difference]: Finished difference Result 56148 states and 82985 transitions. [2020-10-14 21:17:05,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-14 21:17:05,144 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 256 [2020-10-14 21:17:05,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:06,235 INFO L225 Difference]: With dead ends: 56148 [2020-10-14 21:17:06,236 INFO L226 Difference]: Without dead ends: 37016 [2020-10-14 21:17:06,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:17:06,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37016 states. [2020-10-14 21:17:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37016 to 30719. [2020-10-14 21:17:07,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30719 states. [2020-10-14 21:17:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30719 states to 30719 states and 42740 transitions. [2020-10-14 21:17:07,211 INFO L78 Accepts]: Start accepts. Automaton has 30719 states and 42740 transitions. Word has length 256 [2020-10-14 21:17:07,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:07,212 INFO L479 AbstractCegarLoop]: Abstraction has 30719 states and 42740 transitions. [2020-10-14 21:17:07,212 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:17:07,212 INFO L276 IsEmpty]: Start isEmpty. Operand 30719 states and 42740 transitions. [2020-10-14 21:17:07,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2020-10-14 21:17:07,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:07,219 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:17:07,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:17:07,219 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:07,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:07,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1784681455, now seen corresponding path program 1 times [2020-10-14 21:17:07,220 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:07,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182977411] [2020-10-14 21:17:07,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:07,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:07,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:09,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:09,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:09,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 290 [2020-10-14 21:17:09,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:17:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2080 [2020-10-14 21:17:09,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:09,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:09,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:17:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-14 21:17:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:09,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:09,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:09,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:09,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:09,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-14 21:17:09,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:09,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:09,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:09,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:09,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:09,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:09,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:09,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:09,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:17:09,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:09,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 21:17:09,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:09,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:09,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:09,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:17:09,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:09,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:17:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:09,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:09,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:10,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:10,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:17:10,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-14 21:17:10,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:10,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:10,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:10,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:17:10,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:10,316 INFO L134 CoverageAnalysis]: Checked inductivity of 177 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-14 21:17:10,316 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182977411] [2020-10-14 21:17:10,318 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:10,319 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:17:10,319 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167808375] [2020-10-14 21:17:10,320 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:17:10,321 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:10,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:17:10,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:17:10,322 INFO L87 Difference]: Start difference. First operand 30719 states and 42740 transitions. Second operand 6 states. [2020-10-14 21:17:33,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:33,919 INFO L93 Difference]: Finished difference Result 92814 states and 139324 transitions. [2020-10-14 21:17:33,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:17:33,920 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 278 [2020-10-14 21:17:33,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:34,139 INFO L225 Difference]: With dead ends: 92814 [2020-10-14 21:17:34,139 INFO L226 Difference]: Without dead ends: 62101 [2020-10-14 21:17:34,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:17:34,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62101 states. [2020-10-14 21:17:35,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62101 to 58993. [2020-10-14 21:17:35,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58993 states. [2020-10-14 21:17:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58993 states to 58993 states and 82974 transitions. [2020-10-14 21:17:35,762 INFO L78 Accepts]: Start accepts. Automaton has 58993 states and 82974 transitions. Word has length 278 [2020-10-14 21:17:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:35,762 INFO L479 AbstractCegarLoop]: Abstraction has 58993 states and 82974 transitions. [2020-10-14 21:17:35,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:17:35,763 INFO L276 IsEmpty]: Start isEmpty. Operand 58993 states and 82974 transitions. [2020-10-14 21:17:35,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-14 21:17:35,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:35,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:17:35,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:17:35,770 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:35,771 INFO L82 PathProgramCache]: Analyzing trace with hash -470217891, now seen corresponding path program 1 times [2020-10-14 21:17:35,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:35,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [189685059] [2020-10-14 21:17:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:35,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:36,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:36,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 308 [2020-10-14 21:17:36,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:17:36,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1169 [2020-10-14 21:17:36,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:36,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:36,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:17:36,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:17:36,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:37,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:37,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:37,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:17:37,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:37,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:17:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:17:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:37,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:17:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:17:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:37,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:37,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:17:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:37,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:17:37,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:37,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:37,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:39,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:39,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:17:39,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:17:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1671 [2020-10-14 21:17:39,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:39,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:39,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:17:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:39,210 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 135 proven. 51 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:17:39,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [189685059] [2020-10-14 21:17:39,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:39,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-14 21:17:39,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104458951] [2020-10-14 21:17:39,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:17:39,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:39,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:17:39,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:17:39,215 INFO L87 Difference]: Start difference. First operand 58993 states and 82974 transitions. Second operand 6 states. [2020-10-14 21:17:54,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:54,805 INFO L93 Difference]: Finished difference Result 135211 states and 204849 transitions. [2020-10-14 21:17:54,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:17:54,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 296 [2020-10-14 21:17:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:55,190 INFO L225 Difference]: With dead ends: 135211 [2020-10-14 21:17:55,190 INFO L226 Difference]: Without dead ends: 76224 [2020-10-14 21:17:55,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:17:55,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76224 states. [2020-10-14 21:17:56,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76224 to 72004. [2020-10-14 21:17:56,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72004 states. [2020-10-14 21:17:57,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72004 states to 72004 states and 101757 transitions. [2020-10-14 21:17:57,138 INFO L78 Accepts]: Start accepts. Automaton has 72004 states and 101757 transitions. Word has length 296 [2020-10-14 21:17:57,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:57,138 INFO L479 AbstractCegarLoop]: Abstraction has 72004 states and 101757 transitions. [2020-10-14 21:17:57,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:17:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 72004 states and 101757 transitions. [2020-10-14 21:17:57,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2020-10-14 21:17:57,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:57,145 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-14 21:17:57,145 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:17:57,145 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:57,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:57,146 INFO L82 PathProgramCache]: Analyzing trace with hash -211041626, now seen corresponding path program 1 times [2020-10-14 21:17:57,146 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:57,146 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [495890614] [2020-10-14 21:17:57,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:57,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:57,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:57,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:58,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:01,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:01,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-10-14 21:18:01,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:18:01,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4550 [2020-10-14 21:18:01,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:01,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:01,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:01,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:18:01,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:01,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:01,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:01,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:01,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:01,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:01,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:18:01,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:01,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:01,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:01,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:01,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:01,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:02,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:02,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:18:02,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:02,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-14 21:18:02,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:02,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:02,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:02,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:18:02,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:02,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-14 21:18:02,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:02,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:02,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:02,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:18:02,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:02,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-14 21:18:02,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:02,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 21:18:02,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:02,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:03,036 INFO L134 CoverageAnalysis]: Checked inductivity of 199 backedges. 102 proven. 92 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:18:03,037 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [495890614] [2020-10-14 21:18:03,037 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:03,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:18:03,038 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810986234] [2020-10-14 21:18:03,038 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:03,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:03,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:03,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:03,039 INFO L87 Difference]: Start difference. First operand 72004 states and 101757 transitions. Second operand 7 states. [2020-10-14 21:18:19,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:19,086 INFO L93 Difference]: Finished difference Result 145709 states and 215631 transitions. [2020-10-14 21:18:19,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:18:19,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 303 [2020-10-14 21:18:19,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:19,356 INFO L225 Difference]: With dead ends: 145709 [2020-10-14 21:18:19,356 INFO L226 Difference]: Without dead ends: 73711 [2020-10-14 21:18:19,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:18:19,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73711 states. [2020-10-14 21:18:20,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73711 to 73123. [2020-10-14 21:18:20,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73123 states. [2020-10-14 21:18:20,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73123 states to 73123 states and 103814 transitions. [2020-10-14 21:18:20,617 INFO L78 Accepts]: Start accepts. Automaton has 73123 states and 103814 transitions. Word has length 303 [2020-10-14 21:18:20,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:20,618 INFO L479 AbstractCegarLoop]: Abstraction has 73123 states and 103814 transitions. [2020-10-14 21:18:20,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:20,618 INFO L276 IsEmpty]: Start isEmpty. Operand 73123 states and 103814 transitions. [2020-10-14 21:18:20,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 379 [2020-10-14 21:18:20,625 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:20,625 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:18:20,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:18:20,626 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:20,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:20,626 INFO L82 PathProgramCache]: Analyzing trace with hash 1833895102, now seen corresponding path program 1 times [2020-10-14 21:18:20,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:20,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936250095] [2020-10-14 21:18:20,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:20,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:21,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:21,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:22,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:23,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:23,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-14 21:18:23,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:18:23,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2872 [2020-10-14 21:18:23,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:23,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:18:23,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-14 21:18:23,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:23,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:23,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:23,636 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:23,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:23,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:23,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:18:23,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:23,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:23,637 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:23,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:23,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:23,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:23,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:23,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:18:23,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:23,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 21:18:23,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:23,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:23,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:18:23,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:23,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:18:23,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:23,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:23,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:23,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:18:23,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:23,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-14 21:18:23,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:23,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:23,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:23,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:18:23,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:23,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2020-10-14 21:18:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:23,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:23,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:23,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-14 21:18:23,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:23,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-14 21:18:23,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:23,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:23,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-14 21:18:23,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:23,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:24,442 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 229 proven. 96 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-14 21:18:24,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936250095] [2020-10-14 21:18:24,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:24,443 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:18:24,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073231718] [2020-10-14 21:18:24,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:24,444 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:24,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:24,445 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:24,445 INFO L87 Difference]: Start difference. First operand 73123 states and 103814 transitions. Second operand 7 states. [2020-10-14 21:18:48,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:48,218 INFO L93 Difference]: Finished difference Result 171919 states and 240986 transitions. [2020-10-14 21:18:48,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:18:48,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 378 [2020-10-14 21:18:48,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:48,424 INFO L225 Difference]: With dead ends: 171919 [2020-10-14 21:18:48,424 INFO L226 Difference]: Without dead ends: 93785 [2020-10-14 21:18:48,503 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:18:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93785 states. [2020-10-14 21:18:49,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93785 to 87563. [2020-10-14 21:18:49,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87563 states. [2020-10-14 21:18:49,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87563 states to 87563 states and 116137 transitions. [2020-10-14 21:18:49,659 INFO L78 Accepts]: Start accepts. Automaton has 87563 states and 116137 transitions. Word has length 378 [2020-10-14 21:18:49,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:49,659 INFO L479 AbstractCegarLoop]: Abstraction has 87563 states and 116137 transitions. [2020-10-14 21:18:49,659 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:49,659 INFO L276 IsEmpty]: Start isEmpty. Operand 87563 states and 116137 transitions. [2020-10-14 21:18:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 502 [2020-10-14 21:18:49,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:49,676 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:18:49,676 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:18:49,676 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:49,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:49,677 INFO L82 PathProgramCache]: Analyzing trace with hash -964292034, now seen corresponding path program 1 times [2020-10-14 21:18:49,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:49,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [569577419] [2020-10-14 21:18:49,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:49,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:49,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:50,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:51,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:53,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:53,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 517 [2020-10-14 21:18:53,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:18:53,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4214 [2020-10-14 21:18:53,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:53,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:53,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 368 [2020-10-14 21:18:53,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-14 21:18:53,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:54,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:54,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:54,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:54,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:54,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:54,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:18:54,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:54,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:54,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:54,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:54,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:54,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:54,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:18:54,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:54,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-14 21:18:54,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:54,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:54,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:54,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:54,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:18:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:54,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:54,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-14 21:18:54,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-14 21:18:54,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:54,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:54,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:54,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:54,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 278 [2020-10-14 21:18:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:54,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:54,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:54,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-14 21:18:54,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:54,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-14 21:18:54,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:54,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:54,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-14 21:18:54,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:54,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-14 21:18:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:54,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:54,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:54,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:54,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:18:54,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:54,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-14 21:18:54,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:54,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:54,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-14 21:18:54,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:54,720 INFO L134 CoverageAnalysis]: Checked inductivity of 755 backedges. 218 proven. 4 refuted. 0 times theorem prover too weak. 533 trivial. 0 not checked. [2020-10-14 21:18:54,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [569577419] [2020-10-14 21:18:54,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:54,721 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:18:54,721 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567896660] [2020-10-14 21:18:54,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-14 21:18:54,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:54,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-14 21:18:54,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-14 21:18:54,723 INFO L87 Difference]: Start difference. First operand 87563 states and 116137 transitions. Second operand 5 states. [2020-10-14 21:19:11,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:11,653 INFO L93 Difference]: Finished difference Result 191348 states and 258267 transitions. [2020-10-14 21:19:11,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:19:11,655 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 501 [2020-10-14 21:19:11,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:12,065 INFO L225 Difference]: With dead ends: 191348 [2020-10-14 21:19:12,065 INFO L226 Difference]: Without dead ends: 104558 [2020-10-14 21:19:12,163 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:19:12,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104558 states. [2020-10-14 21:19:16,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104558 to 102997. [2020-10-14 21:19:16,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102997 states. [2020-10-14 21:19:16,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102997 states to 102997 states and 137558 transitions. [2020-10-14 21:19:16,395 INFO L78 Accepts]: Start accepts. Automaton has 102997 states and 137558 transitions. Word has length 501 [2020-10-14 21:19:16,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:16,396 INFO L479 AbstractCegarLoop]: Abstraction has 102997 states and 137558 transitions. [2020-10-14 21:19:16,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-14 21:19:16,397 INFO L276 IsEmpty]: Start isEmpty. Operand 102997 states and 137558 transitions. [2020-10-14 21:19:16,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 505 [2020-10-14 21:19:16,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:16,412 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 21:19:16,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-14 21:19:16,413 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:16,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:16,414 INFO L82 PathProgramCache]: Analyzing trace with hash 666175760, now seen corresponding path program 1 times [2020-10-14 21:19:16,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:16,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235092219] [2020-10-14 21:19:16,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:16,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:16,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking...