/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_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 21:17:28,302 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 21:17:28,306 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 21:17:28,348 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 21:17:28,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 21:17:28,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 21:17:28,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 21:17:28,353 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 21:17:28,355 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 21:17:28,356 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 21:17:28,357 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 21:17:28,359 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 21:17:28,359 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 21:17:28,360 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 21:17:28,362 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 21:17:28,363 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 21:17:28,364 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 21:17:28,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 21:17:28,367 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 21:17:28,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 21:17:28,372 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 21:17:28,373 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 21:17:28,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 21:17:28,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 21:17:28,379 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 21:17:28,379 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 21:17:28,379 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 21:17:28,380 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 21:17:28,381 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 21:17:28,382 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 21:17:28,382 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 21:17:28,383 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 21:17:28,384 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 21:17:28,385 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 21:17:28,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 21:17:28,387 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 21:17:28,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 21:17:28,388 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 21:17:28,388 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 21:17:28,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 21:17:28,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 21:17:28,390 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 21:17:28,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 21:17:28,418 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 21:17:28,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 21:17:28,421 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 21:17:28,421 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 21:17:28,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 21:17:28,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 21:17:28,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 21:17:28,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 21:17:28,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 21:17:28,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 21:17:28,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 21:17:28,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 21:17:28,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 21:17:28,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 21:17:28,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 21:17:28,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 21:17:28,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 21:17:28,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 21:17:28,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 21:17:28,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 21:17:28,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 21:17:28,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 21:17:28,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 21:17:28,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 21:17:28,426 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 21:17:28,426 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 21:17:28,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 21:17:28,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 21:17:28,426 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 21:17:28,774 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 21:17:28,790 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 21:17:28,794 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 21:17:28,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 21:17:28,797 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 21:17:28,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-14 21:17:28,894 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd70aed7c/3431e169d5a44b91a96760b10185cdba/FLAG3f885a9d3 [2020-10-14 21:17:29,832 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 21:17:29,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label44.c [2020-10-14 21:17:29,873 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd70aed7c/3431e169d5a44b91a96760b10185cdba/FLAG3f885a9d3 [2020-10-14 21:17:30,285 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd70aed7c/3431e169d5a44b91a96760b10185cdba [2020-10-14 21:17:30,297 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 21:17:30,300 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 21:17:30,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 21:17:30,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 21:17:30,306 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 21:17:30,307 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:17:30" (1/1) ... [2020-10-14 21:17:30,312 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25814f5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:30, skipping insertion in model container [2020-10-14 21:17:30,312 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 09:17:30" (1/1) ... [2020-10-14 21:17:30,324 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 21:17:30,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 21:17:32,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:17:32,357 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 21:17:33,216 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 21:17:33,254 INFO L208 MainTranslator]: Completed translation [2020-10-14 21:17:33,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33 WrapperNode [2020-10-14 21:17:33,256 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 21:17:33,257 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 21:17:33,258 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 21:17:33,258 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 21:17:33,277 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,280 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,367 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,367 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,504 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,537 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,572 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (1/1) ... [2020-10-14 21:17:33,630 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 21:17:33,631 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 21:17:33,631 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 21:17:33,631 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 21:17:33,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (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 21:17:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 21:17:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 21:17:33,741 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-14 21:17:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-14 21:17:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-14 21:17:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-14 21:17:33,742 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 21:17:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-14 21:17:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-14 21:17:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-14 21:17:33,743 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-14 21:17:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 21:17:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-14 21:17:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-14 21:17:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 21:17:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 21:17:33,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 21:17:40,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 21:17:40,365 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 21:17:40,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:17:40 BoogieIcfgContainer [2020-10-14 21:17:40,389 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 21:17:40,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 21:17:40,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 21:17:40,395 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 21:17:40,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 09:17:30" (1/3) ... [2020-10-14 21:17:40,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d264c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:17:40, skipping insertion in model container [2020-10-14 21:17:40,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 09:17:33" (2/3) ... [2020-10-14 21:17:40,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d264c0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 09:17:40, skipping insertion in model container [2020-10-14 21:17:40,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 09:17:40" (3/3) ... [2020-10-14 21:17:40,402 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem12_label44.c [2020-10-14 21:17:40,419 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 21:17:40,434 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 21:17:40,455 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 21:17:40,540 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 21:17:40,541 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 21:17:40,541 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 21:17:40,541 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 21:17:40,541 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 21:17:40,541 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 21:17:40,542 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 21:17:40,542 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 21:17:40,588 INFO L276 IsEmpty]: Start isEmpty. Operand 839 states. [2020-10-14 21:17:40,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-14 21:17:40,600 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:40,602 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] [2020-10-14 21:17:40,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:40,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:40,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1113474819, now seen corresponding path program 1 times [2020-10-14 21:17:40,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:40,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295477748] [2020-10-14 21:17:40,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:40,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:40,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:41,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:41,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-14 21:17:41,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:41,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-10-14 21:17:41,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:41,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:17:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:17:41,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-14 21:17:41,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:17:41,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:41,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:41,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:41,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:41,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:41,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-14 21:17:41,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:41,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:41,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:41,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:17:41,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:41,660 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 21:17:41,662 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295477748] [2020-10-14 21:17:41,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:17:41,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 21:17:41,667 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801782247] [2020-10-14 21:17:41,674 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 21:17:41,675 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 21:17:41,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 21:17:41,698 INFO L87 Difference]: Start difference. First operand 839 states. Second operand 4 states. [2020-10-14 21:17:52,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:17:52,091 INFO L93 Difference]: Finished difference Result 2471 states and 4736 transitions. [2020-10-14 21:17:52,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-14 21:17:52,094 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-10-14 21:17:52,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:17:52,134 INFO L225 Difference]: With dead ends: 2471 [2020-10-14 21:17:52,135 INFO L226 Difference]: Without dead ends: 1568 [2020-10-14 21:17:52,150 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 21:17:52,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1568 states. [2020-10-14 21:17:52,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1568 to 1553. [2020-10-14 21:17:52,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1553 states. [2020-10-14 21:17:52,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1553 states to 1553 states and 2521 transitions. [2020-10-14 21:17:52,318 INFO L78 Accepts]: Start accepts. Automaton has 1553 states and 2521 transitions. Word has length 56 [2020-10-14 21:17:52,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:17:52,319 INFO L479 AbstractCegarLoop]: Abstraction has 1553 states and 2521 transitions. [2020-10-14 21:17:52,319 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 21:17:52,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1553 states and 2521 transitions. [2020-10-14 21:17:52,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-14 21:17:52,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:17:52,326 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:17:52,327 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 21:17:52,327 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:17:52,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:17:52,327 INFO L82 PathProgramCache]: Analyzing trace with hash 486407621, now seen corresponding path program 1 times [2020-10-14 21:17:52,328 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:17:52,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462497491] [2020-10-14 21:17:52,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:17:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:52,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:52,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:53,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:53,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-14 21:17:53,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:17:53,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1357 [2020-10-14 21:17:53,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:53,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-14 21:17:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:17:53,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-14 21:17:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-14 21:17:53,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:17:53,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:53,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:53,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:53,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:17:53,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:53,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:17:53,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:53,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:17:53,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:17:53,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:17:53,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:53,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:17:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:17:53,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:17:54,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:17:54,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:17:54,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:17:54,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 21:17:54,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:17:54,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:17:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:17:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:17:54,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-14 21:17:54,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:17:54,168 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-14 21:17:54,169 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462497491] [2020-10-14 21:17:54,169 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:17:54,169 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-14 21:17:54,170 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809652522] [2020-10-14 21:17:54,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-14 21:17:54,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:17:54,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-14 21:17:54,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-14 21:17:54,173 INFO L87 Difference]: Start difference. First operand 1553 states and 2521 transitions. Second operand 6 states. [2020-10-14 21:18:05,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:05,198 INFO L93 Difference]: Finished difference Result 4690 states and 7651 transitions. [2020-10-14 21:18:05,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-14 21:18:05,200 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 131 [2020-10-14 21:18:05,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:05,219 INFO L225 Difference]: With dead ends: 4690 [2020-10-14 21:18:05,219 INFO L226 Difference]: Without dead ends: 3143 [2020-10-14 21:18:05,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:18:05,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3143 states. [2020-10-14 21:18:05,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3143 to 3125. [2020-10-14 21:18:05,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3125 states. [2020-10-14 21:18:05,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3125 states to 3125 states and 4443 transitions. [2020-10-14 21:18:05,305 INFO L78 Accepts]: Start accepts. Automaton has 3125 states and 4443 transitions. Word has length 131 [2020-10-14 21:18:05,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:05,307 INFO L479 AbstractCegarLoop]: Abstraction has 3125 states and 4443 transitions. [2020-10-14 21:18:05,307 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-14 21:18:05,307 INFO L276 IsEmpty]: Start isEmpty. Operand 3125 states and 4443 transitions. [2020-10-14 21:18:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-14 21:18:05,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:05,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:05,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 21:18:05,311 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:05,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:05,312 INFO L82 PathProgramCache]: Analyzing trace with hash 117965693, now seen corresponding path program 1 times [2020-10-14 21:18:05,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:05,312 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2007618302] [2020-10-14 21:18:05,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:05,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:05,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:06,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:06,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-14 21:18:06,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:06,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-10-14 21:18:06,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:06,241 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:06,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:06,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-14 21:18:06,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:06,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:06,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:06,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:06,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:06,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:06,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 21:18:06,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:06,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:06,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:06,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:06,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:06,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:06,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:06,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:06,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:06,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-14 21:18:06,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:06,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-10-14 21:18:06,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:06,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:06,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-14 21:18:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:06,708 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:06,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2007618302] [2020-10-14 21:18:06,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:06,709 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:18:06,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064225498] [2020-10-14 21:18:06,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:06,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:06,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:06,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:06,713 INFO L87 Difference]: Start difference. First operand 3125 states and 4443 transitions. Second operand 7 states. [2020-10-14 21:18:20,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:20,725 INFO L93 Difference]: Finished difference Result 9557 states and 13720 transitions. [2020-10-14 21:18:20,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:18:20,727 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 135 [2020-10-14 21:18:20,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:20,761 INFO L225 Difference]: With dead ends: 9557 [2020-10-14 21:18:20,762 INFO L226 Difference]: Without dead ends: 6438 [2020-10-14 21:18:20,770 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:18:20,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6438 states. [2020-10-14 21:18:20,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6438 to 6299. [2020-10-14 21:18:20,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6299 states. [2020-10-14 21:18:20,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 8422 transitions. [2020-10-14 21:18:20,949 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 8422 transitions. Word has length 135 [2020-10-14 21:18:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:20,950 INFO L479 AbstractCegarLoop]: Abstraction has 6299 states and 8422 transitions. [2020-10-14 21:18:20,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 8422 transitions. [2020-10-14 21:18:20,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-14 21:18:20,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:20,954 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:20,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-14 21:18:20,955 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:20,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:20,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1751431193, now seen corresponding path program 1 times [2020-10-14 21:18:20,956 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:20,956 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [444255953] [2020-10-14 21:18:20,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:21,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:21,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:22,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:22,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-14 21:18:22,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1041 [2020-10-14 21:18:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:22,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:22,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-14 21:18:22,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:22,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:22,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:22,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:22,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:22,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:22,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:22,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 21:18:22,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:22,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:22,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:22,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:22,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:22,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:22,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:22,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:22,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-14 21:18:22,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-10-14 21:18:22,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:22,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:22,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-14 21:18:22,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:22,697 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:22,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [444255953] [2020-10-14 21:18:22,700 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:22,700 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:18:22,701 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515969056] [2020-10-14 21:18:22,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:22,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:22,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:22,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:22,704 INFO L87 Difference]: Start difference. First operand 6299 states and 8422 transitions. Second operand 7 states. [2020-10-14 21:18:36,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:36,718 INFO L93 Difference]: Finished difference Result 18342 states and 24997 transitions. [2020-10-14 21:18:36,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:18:36,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 169 [2020-10-14 21:18:36,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:36,775 INFO L225 Difference]: With dead ends: 18342 [2020-10-14 21:18:36,775 INFO L226 Difference]: Without dead ends: 12049 [2020-10-14 21:18:36,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-14 21:18:36,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12049 states. [2020-10-14 21:18:37,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12049 to 11932. [2020-10-14 21:18:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11932 states. [2020-10-14 21:18:37,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11932 states to 11932 states and 14763 transitions. [2020-10-14 21:18:37,104 INFO L78 Accepts]: Start accepts. Automaton has 11932 states and 14763 transitions. Word has length 169 [2020-10-14 21:18:37,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:37,106 INFO L479 AbstractCegarLoop]: Abstraction has 11932 states and 14763 transitions. [2020-10-14 21:18:37,106 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:37,106 INFO L276 IsEmpty]: Start isEmpty. Operand 11932 states and 14763 transitions. [2020-10-14 21:18:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2020-10-14 21:18:37,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:37,111 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:18:37,111 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-14 21:18:37,111 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:37,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:37,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1350390120, now seen corresponding path program 1 times [2020-10-14 21:18:37,112 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:37,112 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2139416624] [2020-10-14 21:18:37,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:37,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:37,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:37,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:38,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:38,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 214 [2020-10-14 21:18:38,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:18:38,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1672 [2020-10-14 21:18:38,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:38,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:18:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-14 21:18:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-14 21:18:38,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:38,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:38,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:38,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:38,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:38,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:38,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:38,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-14 21:18:38,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:38,938 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:38,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 21:18:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:38,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:39,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:39,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:39,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:39,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-14 21:18:39,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:39,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-14 21:18:39,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:39,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:39,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:39,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:39,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-14 21:18:39,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-14 21:18:39,589 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 21:18:39,589 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2139416624] [2020-10-14 21:18:39,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 21:18:39,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-14 21:18:39,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657335762] [2020-10-14 21:18:39,591 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:18:39,591 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:39,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:18:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:18:39,592 INFO L87 Difference]: Start difference. First operand 11932 states and 14763 transitions. Second operand 7 states. [2020-10-14 21:18:50,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:18:50,432 INFO L93 Difference]: Finished difference Result 18706 states and 24072 transitions. [2020-10-14 21:18:50,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-14 21:18:50,434 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 204 [2020-10-14 21:18:50,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:18:50,501 INFO L225 Difference]: With dead ends: 18706 [2020-10-14 21:18:50,501 INFO L226 Difference]: Without dead ends: 12245 [2020-10-14 21:18:50,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-14 21:18:50,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12245 states. [2020-10-14 21:18:50,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12245 to 11991. [2020-10-14 21:18:50,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11991 states. [2020-10-14 21:18:50,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11991 states to 11991 states and 14856 transitions. [2020-10-14 21:18:50,820 INFO L78 Accepts]: Start accepts. Automaton has 11991 states and 14856 transitions. Word has length 204 [2020-10-14 21:18:50,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:18:50,821 INFO L479 AbstractCegarLoop]: Abstraction has 11991 states and 14856 transitions. [2020-10-14 21:18:50,821 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:18:50,821 INFO L276 IsEmpty]: Start isEmpty. Operand 11991 states and 14856 transitions. [2020-10-14 21:18:50,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-10-14 21:18:50,825 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:18:50,826 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, 2, 2, 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] [2020-10-14 21:18:50,826 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-14 21:18:50,826 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:18:50,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:18:50,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1451649216, now seen corresponding path program 1 times [2020-10-14 21:18:50,827 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:18:50,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863488444] [2020-10-14 21:18:50,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:18:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:50,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:51,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:52,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:52,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-10-14 21:18:52,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:18:52,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1437 [2020-10-14 21:18:52,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:52,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-14 21:18:52,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-14 21:18:52,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:52,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:18:52,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:52,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:52,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:18:52,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:52,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:18:52,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:52,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:18:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:52,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:18:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:52,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:18:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:52,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:52,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-14 21:18:52,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:52,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-14 21:18:52,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:52,591 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:18:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:18:52,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:18:52,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:18:52,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-14 21:18:52,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:18:52,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:18:52,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:18:52,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-14 21:18:52,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:18:52,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-14 21:18:52,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:18:52,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:18:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:18:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:18:52,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-14 21:18:52,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:18:52,962 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 170 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:18:52,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1863488444] [2020-10-14 21:18:52,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:18:52,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:18:52,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886563462] [2020-10-14 21:18:52,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:18:52,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:18:52,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:18:52,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:18:52,966 INFO L87 Difference]: Start difference. First operand 11991 states and 14856 transitions. Second operand 8 states. [2020-10-14 21:19:16,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:16,359 INFO L93 Difference]: Finished difference Result 25886 states and 35142 transitions. [2020-10-14 21:19:16,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-14 21:19:16,361 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 231 [2020-10-14 21:19:16,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:16,408 INFO L225 Difference]: With dead ends: 25886 [2020-10-14 21:19:16,408 INFO L226 Difference]: Without dead ends: 12295 [2020-10-14 21:19:16,438 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-14 21:19:16,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12295 states. [2020-10-14 21:19:16,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12295 to 11985. [2020-10-14 21:19:16,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11985 states. [2020-10-14 21:19:16,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11985 states to 11985 states and 15293 transitions. [2020-10-14 21:19:16,683 INFO L78 Accepts]: Start accepts. Automaton has 11985 states and 15293 transitions. Word has length 231 [2020-10-14 21:19:16,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:16,684 INFO L479 AbstractCegarLoop]: Abstraction has 11985 states and 15293 transitions. [2020-10-14 21:19:16,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:19:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 11985 states and 15293 transitions. [2020-10-14 21:19:16,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 291 [2020-10-14 21:19:16,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:16,689 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:19:16,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-14 21:19:16,689 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:16,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:16,690 INFO L82 PathProgramCache]: Analyzing trace with hash 422492269, now seen corresponding path program 1 times [2020-10-14 21:19:16,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:16,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596155030] [2020-10-14 21:19:16,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:16,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:16,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:17,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:17,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:17,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:17,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 302 [2020-10-14 21:19:17,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-14 21:19:17,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1162 [2020-10-14 21:19:17,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:17,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:19:17,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-14 21:19:17,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-14 21:19:17,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:18,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:18,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:18,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:18,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:18,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:19:18,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:18,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:18,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:18,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:18,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:18,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:18,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:18,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:19:18,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:18,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-14 21:19:18,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:18,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:18,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-14 21:19:18,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:18,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:19:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:18,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:18,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:19:18,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-14 21:19:18,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:18,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:18,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:18,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:19:18,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:18,814 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 178 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-14 21:19:18,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596155030] [2020-10-14 21:19:18,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:18,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:19:18,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972212360] [2020-10-14 21:19:18,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:18,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:18,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:18,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:18,819 INFO L87 Difference]: Start difference. First operand 11985 states and 15293 transitions. Second operand 7 states. [2020-10-14 21:19:43,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:19:43,074 INFO L93 Difference]: Finished difference Result 43903 states and 60442 transitions. [2020-10-14 21:19:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-14 21:19:43,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 290 [2020-10-14 21:19:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:19:43,215 INFO L225 Difference]: With dead ends: 43903 [2020-10-14 21:19:43,215 INFO L226 Difference]: Without dead ends: 32691 [2020-10-14 21:19:43,262 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2020-10-14 21:19:43,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32691 states. [2020-10-14 21:19:44,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32691 to 31149. [2020-10-14 21:19:44,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31149 states. [2020-10-14 21:19:44,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31149 states to 31149 states and 42071 transitions. [2020-10-14 21:19:44,205 INFO L78 Accepts]: Start accepts. Automaton has 31149 states and 42071 transitions. Word has length 290 [2020-10-14 21:19:44,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:19:44,207 INFO L479 AbstractCegarLoop]: Abstraction has 31149 states and 42071 transitions. [2020-10-14 21:19:44,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:19:44,207 INFO L276 IsEmpty]: Start isEmpty. Operand 31149 states and 42071 transitions. [2020-10-14 21:19:44,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-10-14 21:19:44,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:19:44,213 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 21:19:44,213 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-14 21:19:44,214 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:19:44,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:19:44,214 INFO L82 PathProgramCache]: Analyzing trace with hash -785268299, now seen corresponding path program 1 times [2020-10-14 21:19:44,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:19:44,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037470067] [2020-10-14 21:19:44,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:19:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:44,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:45,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:45,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 306 [2020-10-14 21:19:45,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:19:45,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1196 [2020-10-14 21:19:45,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:45,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-14 21:19:45,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-14 21:19:45,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:45,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:19:45,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:45,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:45,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:19:45,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:45,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:19:45,591 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:45,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:19:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:45,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:19:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:45,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:19:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:45,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:45,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:45,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-14 21:19:45,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:45,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-14 21:19:45,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:45,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:19:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:19:45,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-14 21:19:45,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:19:45,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-14 21:19:45,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:19:45,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:19:45,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:19:45,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-14 21:19:45,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:19:45,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-14 21:19:45,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:19:45,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:19:45,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:19:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:19:45,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-14 21:19:45,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:19:46,130 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 184 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-14 21:19:46,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037470067] [2020-10-14 21:19:46,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:19:46,131 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-14 21:19:46,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217125702] [2020-10-14 21:19:46,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-14 21:19:46,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:19:46,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-14 21:19:46,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-14 21:19:46,134 INFO L87 Difference]: Start difference. First operand 31149 states and 42071 transitions. Second operand 7 states. [2020-10-14 21:20:13,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:20:13,005 INFO L93 Difference]: Finished difference Result 89043 states and 129977 transitions. [2020-10-14 21:20:13,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-14 21:20:13,008 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 294 [2020-10-14 21:20:13,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:20:13,297 INFO L225 Difference]: With dead ends: 89043 [2020-10-14 21:20:13,297 INFO L226 Difference]: Without dead ends: 58667 [2020-10-14 21:20:13,385 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-14 21:20:13,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58667 states. [2020-10-14 21:20:14,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58667 to 55230. [2020-10-14 21:20:14,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55230 states. [2020-10-14 21:20:16,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55230 states to 55230 states and 73050 transitions. [2020-10-14 21:20:16,508 INFO L78 Accepts]: Start accepts. Automaton has 55230 states and 73050 transitions. Word has length 294 [2020-10-14 21:20:16,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:20:16,509 INFO L479 AbstractCegarLoop]: Abstraction has 55230 states and 73050 transitions. [2020-10-14 21:20:16,509 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-14 21:20:16,510 INFO L276 IsEmpty]: Start isEmpty. Operand 55230 states and 73050 transitions. [2020-10-14 21:20:16,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 432 [2020-10-14 21:20:16,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:20:16,526 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, 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, 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] [2020-10-14 21:20:16,527 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-14 21:20:16,527 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:20:16,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:20:16,527 INFO L82 PathProgramCache]: Analyzing trace with hash -171782930, now seen corresponding path program 1 times [2020-10-14 21:20:16,528 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:20:16,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884899840] [2020-10-14 21:20:16,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:20:16,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:16,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:16,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:17,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:19,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:21,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:21,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:21,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 447 [2020-10-14 21:20:21,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-14 21:20:21,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-14 21:20:21,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:21,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-14 21:20:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-14 21:20:21,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-14 21:20:21,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:20:21,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:20:21,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:21,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:21,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:21,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:20:21,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:21,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-14 21:20:21,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:21,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:21,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:21,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:21,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:21,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:20:21,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:21,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:21,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:21,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:20:21,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:21,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-14 21:20:21,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:21,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:21,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:20:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:21,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:20:21,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:21,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:20:21,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:22,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:22,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:22,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:20:22,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:22,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-14 21:20:22,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:22,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:22,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:22,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:20:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:22,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:20:22,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:22,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:22,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:22,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-14 21:20:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-14 21:20:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-14 21:20:22,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:22,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:20:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:20:22,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-14 21:20:22,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:22,380 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 314 [2020-10-14 21:20:22,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:20:22,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:20:22,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:20:22,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-14 21:20:22,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:20:22,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-14 21:20:22,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:20:22,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:20:22,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:20:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:20:22,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-14 21:20:22,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:20:22,908 INFO L134 CoverageAnalysis]: Checked inductivity of 642 backedges. 405 proven. 4 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2020-10-14 21:20:22,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884899840] [2020-10-14 21:20:22,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-14 21:20:22,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-14 21:20:22,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40765541] [2020-10-14 21:20:22,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-14 21:20:22,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 21:20:22,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-14 21:20:22,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-14 21:20:22,920 INFO L87 Difference]: Start difference. First operand 55230 states and 73050 transitions. Second operand 8 states. [2020-10-14 21:21:04,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 21:21:04,120 INFO L93 Difference]: Finished difference Result 120536 states and 158392 transitions. [2020-10-14 21:21:04,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-14 21:21:04,124 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 431 [2020-10-14 21:21:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 21:21:04,393 INFO L225 Difference]: With dead ends: 120536 [2020-10-14 21:21:04,394 INFO L226 Difference]: Without dead ends: 66079 [2020-10-14 21:21:04,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-14 21:21:04,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66079 states. [2020-10-14 21:21:06,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66079 to 66043. [2020-10-14 21:21:06,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66043 states. [2020-10-14 21:21:06,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66043 states to 66043 states and 80799 transitions. [2020-10-14 21:21:06,484 INFO L78 Accepts]: Start accepts. Automaton has 66043 states and 80799 transitions. Word has length 431 [2020-10-14 21:21:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 21:21:06,485 INFO L479 AbstractCegarLoop]: Abstraction has 66043 states and 80799 transitions. [2020-10-14 21:21:06,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-14 21:21:06,486 INFO L276 IsEmpty]: Start isEmpty. Operand 66043 states and 80799 transitions. [2020-10-14 21:21:06,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-10-14 21:21:06,511 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 21:21:06,511 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, 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, 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] [2020-10-14 21:21:06,512 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-14 21:21:06,512 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 21:21:06,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 21:21:06,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1030774080, now seen corresponding path program 1 times [2020-10-14 21:21:06,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 21:21:06,513 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2047711795] [2020-10-14 21:21:06,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 21:21:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:06,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:08,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:09,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:11,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:11,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 488 [2020-10-14 21:21:11,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-14 21:21:11,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-14 21:21:11,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:11,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:11,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-14 21:21:11,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 193 [2020-10-14 21:21:11,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-14 21:21:11,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 21:21:11,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:11,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:11,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:11,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 21:21:11,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:11,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-14 21:21:11,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:11,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:11,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:11,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:11,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:11,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-14 21:21:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:11,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:11,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:11,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-14 21:21:11,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:11,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-14 21:21:11,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:11,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 21:21:11,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:11,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 21:21:11,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:11,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-14 21:21:11,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:11,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:12,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:12,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-14 21:21:12,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:12,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-14 21:21:12,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:12,019 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 21:21:12,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 21:21:12,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-14 21:21:12,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 21:21:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-14 21:21:12,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 21:21:12,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 21:21:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 21:21:12,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-14 21:21:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 21:21:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-10-14 21:21:12,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 21:21:12,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 21:21:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-14 21:21:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-14 21:21:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 191 [2020-10-14 21:21:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1