/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 10:05:59,605 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 10:05:59,609 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 10:05:59,635 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 10:05:59,636 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 10:05:59,637 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 10:05:59,639 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 10:05:59,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 10:05:59,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 10:05:59,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 10:05:59,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 10:05:59,647 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 10:05:59,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 10:05:59,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 10:05:59,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 10:05:59,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 10:05:59,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 10:05:59,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 10:05:59,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 10:05:59,658 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 10:05:59,660 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 10:05:59,661 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 10:05:59,663 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 10:05:59,665 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 10:05:59,668 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 10:05:59,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 10:05:59,669 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 10:05:59,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 10:05:59,671 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 10:05:59,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 10:05:59,672 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 10:05:59,673 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 10:05:59,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 10:05:59,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 10:05:59,677 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 10:05:59,677 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 10:05:59,678 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 10:05:59,678 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 10:05:59,678 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 10:05:59,680 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 10:05:59,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 10:05:59,682 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 10:05:59,710 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 10:05:59,710 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 10:05:59,712 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 10:05:59,712 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 10:05:59,712 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 10:05:59,712 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 10:05:59,713 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 10:05:59,713 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 10:05:59,713 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 10:05:59,713 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 10:05:59,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 10:05:59,714 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 10:05:59,714 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 10:05:59,714 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 10:05:59,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 10:05:59,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 10:05:59,715 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 10:05:59,715 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 10:05:59,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 10:05:59,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 10:05:59,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 10:05:59,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:05:59,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 10:05:59,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 10:05:59,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 10:05:59,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 10:05:59,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 10:05:59,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 10:05:59,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 10:05:59,718 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-09-25 10:06:00,207 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 10:06:00,225 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 10:06:00,229 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 10:06:00,231 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 10:06:00,232 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 10:06:00,233 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 10:06:00,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50ca341b1/60a67c3e61bf4e94b60a9f1f52c49990/FLAG18e92c485 [2020-09-25 10:06:01,034 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 10:06:01,035 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem01_label00.c [2020-09-25 10:06:01,054 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50ca341b1/60a67c3e61bf4e94b60a9f1f52c49990/FLAG18e92c485 [2020-09-25 10:06:01,180 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50ca341b1/60a67c3e61bf4e94b60a9f1f52c49990 [2020-09-25 10:06:01,193 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 10:06:01,199 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 10:06:01,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:01,202 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 10:06:01,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 10:06:01,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:01" (1/1) ... [2020-09-25 10:06:01,212 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:01, skipping insertion in model container [2020-09-25 10:06:01,212 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 10:06:01" (1/1) ... [2020-09-25 10:06:01,222 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 10:06:01,279 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 10:06:01,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:01,825 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 10:06:02,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 10:06:02,084 INFO L208 MainTranslator]: Completed translation [2020-09-25 10:06:02,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02 WrapperNode [2020-09-25 10:06:02,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 10:06:02,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 10:06:02,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 10:06:02,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 10:06:02,102 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,102 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,167 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,185 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... [2020-09-25 10:06:02,206 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 10:06:02,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 10:06:02,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 10:06:02,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 10:06:02,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 10:06:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 10:06:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 10:06:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 10:06:02,293 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 10:06:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 10:06:02,293 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 10:06:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 10:06:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 10:06:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 10:06:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 10:06:02,294 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 10:06:03,636 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 10:06:03,637 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 10:06:03,651 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:03 BoogieIcfgContainer [2020-09-25 10:06:03,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 10:06:03,655 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 10:06:03,655 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 10:06:03,659 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 10:06:03,660 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 10:06:01" (1/3) ... [2020-09-25 10:06:03,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:03, skipping insertion in model container [2020-09-25 10:06:03,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 10:06:02" (2/3) ... [2020-09-25 10:06:03,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43ec6d71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 10:06:03, skipping insertion in model container [2020-09-25 10:06:03,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 10:06:03" (3/3) ... [2020-09-25 10:06:03,669 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label00.c [2020-09-25 10:06:03,681 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 10:06:03,692 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 10:06:03,715 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 10:06:03,751 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 10:06:03,752 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 10:06:03,752 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 10:06:03,752 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 10:06:03,752 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 10:06:03,752 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 10:06:03,753 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 10:06:03,753 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 10:06:03,785 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states. [2020-09-25 10:06:03,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 10:06:03,814 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:03,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:03,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:03,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:03,823 INFO L82 PathProgramCache]: Analyzing trace with hash 1944492271, now seen corresponding path program 1 times [2020-09-25 10:06:03,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:03,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1523682103] [2020-09-25 10:06:03,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:04,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:04,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:04,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:05,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 10:06:09,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 10:06:09,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-09-25 10:06:09,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 10:06:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 10:06:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-09-25 10:06:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 10:06:09,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:09,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:09,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:09,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:09,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:09,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:09,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 10:06:09,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:09,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:09,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:09,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 10:06:09,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:09,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1523682103] [2020-09-25 10:06:09,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 10:06:09,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 10:06:09,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723295876] [2020-09-25 10:06:09,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 10:06:09,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:09,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 10:06:09,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 10:06:09,623 INFO L87 Difference]: Start difference. First operand 525 states. Second operand 4 states. [2020-09-25 10:06:12,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:12,188 INFO L93 Difference]: Finished difference Result 1340 states and 1738 transitions. [2020-09-25 10:06:12,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 10:06:12,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 136 [2020-09-25 10:06:12,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:12,216 INFO L225 Difference]: With dead ends: 1340 [2020-09-25 10:06:12,217 INFO L226 Difference]: Without dead ends: 741 [2020-09-25 10:06:12,226 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:12,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2020-09-25 10:06:12,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 664. [2020-09-25 10:06:12,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 664 states. [2020-09-25 10:06:12,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 664 states to 664 states and 780 transitions. [2020-09-25 10:06:12,330 INFO L78 Accepts]: Start accepts. Automaton has 664 states and 780 transitions. Word has length 136 [2020-09-25 10:06:12,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:12,331 INFO L479 AbstractCegarLoop]: Abstraction has 664 states and 780 transitions. [2020-09-25 10:06:12,331 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 10:06:12,331 INFO L276 IsEmpty]: Start isEmpty. Operand 664 states and 780 transitions. [2020-09-25 10:06:12,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 10:06:12,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:12,339 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:12,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 10:06:12,340 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:12,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:12,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1586815040, now seen corresponding path program 1 times [2020-09-25 10:06:12,341 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:12,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766956309] [2020-09-25 10:06:12,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:12,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:12,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:12,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:15,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 10:06:17,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 10:06:17,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-25 10:06:17,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 10:06:17,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 122 [2020-09-25 10:06:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:17,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:17,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:17,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:06:17,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:17,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:17,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:17,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:17,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:17,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:17,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:17,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:17,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:17,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 10:06:17,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:17,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:17,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:17,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 10:06:17,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:17,688 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:17,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766956309] [2020-09-25 10:06:17,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:17,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 10:06:17,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501538484] [2020-09-25 10:06:17,692 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 10:06:17,692 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:17,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 10:06:17,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:17,693 INFO L87 Difference]: Start difference. First operand 664 states and 780 transitions. Second operand 6 states. [2020-09-25 10:06:20,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:20,470 INFO L93 Difference]: Finished difference Result 2016 states and 2519 transitions. [2020-09-25 10:06:20,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 10:06:20,473 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 10:06:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:20,483 INFO L225 Difference]: With dead ends: 2016 [2020-09-25 10:06:20,483 INFO L226 Difference]: Without dead ends: 1376 [2020-09-25 10:06:20,489 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 10:06:20,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1376 states. [2020-09-25 10:06:20,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1376 to 1236. [2020-09-25 10:06:20,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1236 states. [2020-09-25 10:06:20,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1236 states to 1236 states and 1519 transitions. [2020-09-25 10:06:20,577 INFO L78 Accepts]: Start accepts. Automaton has 1236 states and 1519 transitions. Word has length 157 [2020-09-25 10:06:20,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:20,580 INFO L479 AbstractCegarLoop]: Abstraction has 1236 states and 1519 transitions. [2020-09-25 10:06:20,580 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 10:06:20,581 INFO L276 IsEmpty]: Start isEmpty. Operand 1236 states and 1519 transitions. [2020-09-25 10:06:20,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 10:06:20,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:20,597 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:20,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 10:06:20,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:20,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:20,598 INFO L82 PathProgramCache]: Analyzing trace with hash -980240193, now seen corresponding path program 1 times [2020-09-25 10:06:20,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:20,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1563576884] [2020-09-25 10:06:20,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:20,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:20,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:21,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:22,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:23,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:24,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 10:06:25,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 10:06:25,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 10:06:25,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,674 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-09-25 10:06:25,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 10:06:25,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:25,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:25,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:25,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:25,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:25,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 10:06:25,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:25,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:25,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:25,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:25,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:25,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:25,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:25,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 10:06:25,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:25,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 10:06:25,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:25,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:25,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 10:06:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:25,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:25,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:25,969 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 10:06:25,970 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1563576884] [2020-09-25 10:06:25,970 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:25,971 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 10:06:25,971 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144378295] [2020-09-25 10:06:25,972 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 10:06:25,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:25,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 10:06:25,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 10:06:25,974 INFO L87 Difference]: Start difference. First operand 1236 states and 1519 transitions. Second operand 5 states. [2020-09-25 10:06:28,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:28,046 INFO L93 Difference]: Finished difference Result 2961 states and 3720 transitions. [2020-09-25 10:06:28,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 10:06:28,046 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 164 [2020-09-25 10:06:28,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:28,062 INFO L225 Difference]: With dead ends: 2961 [2020-09-25 10:06:28,062 INFO L226 Difference]: Without dead ends: 1749 [2020-09-25 10:06:28,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 10:06:28,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1749 states. [2020-09-25 10:06:28,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1749 to 1544. [2020-09-25 10:06:28,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1544 states. [2020-09-25 10:06:28,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1544 states to 1544 states and 1886 transitions. [2020-09-25 10:06:28,165 INFO L78 Accepts]: Start accepts. Automaton has 1544 states and 1886 transitions. Word has length 164 [2020-09-25 10:06:28,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:28,166 INFO L479 AbstractCegarLoop]: Abstraction has 1544 states and 1886 transitions. [2020-09-25 10:06:28,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 10:06:28,166 INFO L276 IsEmpty]: Start isEmpty. Operand 1544 states and 1886 transitions. [2020-09-25 10:06:28,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-09-25 10:06:28,174 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:28,174 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:28,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 10:06:28,175 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:28,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:28,175 INFO L82 PathProgramCache]: Analyzing trace with hash -579666185, now seen corresponding path program 1 times [2020-09-25 10:06:28,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:28,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1634132222] [2020-09-25 10:06:28,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:28,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:28,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:28,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:29,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:33,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:33,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 195 [2020-09-25 10:06:33,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 10:06:33,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-09-25 10:06:33,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:33,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 10:06:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 10:06:33,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 10:06:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 10:06:33,934 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 52 [2020-09-25 10:06:34,181 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 52 [2020-09-25 10:06:34,472 WARN L193 SmtUtils]: Spent 254.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 52 [2020-09-25 10:06:34,747 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 49 [2020-09-25 10:06:34,994 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 45 [2020-09-25 10:06:35,230 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 101 DAG size of output: 41 [2020-09-25 10:06:35,445 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 98 DAG size of output: 35 [2020-09-25 10:06:35,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 10:06:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 10:06:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 10:06:35,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:35,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:35,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-09-25 10:06:35,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-09-25 10:06:35,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 10:06:35,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 10:06:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:35,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 10:06:35,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:35,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 10:06:35,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:35,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:35,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 10:06:35,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 10:06:35,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 10:06:35,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 10:06:35,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 10:06:35,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.1 [2020-09-25 10:06:35,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 10:06:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 10:06:35,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 10:06:35,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 10:06:36,096 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 31 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 10:06:36,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1634132222] [2020-09-25 10:06:36,097 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 10:06:36,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 10:06:36,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799410420] [2020-09-25 10:06:36,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 10:06:36,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 10:06:36,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 10:06:36,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-09-25 10:06:36,100 INFO L87 Difference]: Start difference. First operand 1544 states and 1886 transitions. Second operand 15 states. [2020-09-25 10:06:36,777 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 10:06:37,115 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 10:06:37,361 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-09-25 10:06:38,231 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 115 [2020-09-25 10:06:38,582 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 95 [2020-09-25 10:06:39,222 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 92 [2020-09-25 10:06:39,835 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 88 [2020-09-25 10:06:40,015 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2020-09-25 10:06:40,505 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-09-25 10:06:41,072 WARN L193 SmtUtils]: Spent 334.00 ms on a formula simplification. DAG size of input: 122 DAG size of output: 112 [2020-09-25 10:06:41,755 WARN L193 SmtUtils]: Spent 324.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 109 [2020-09-25 10:06:42,345 WARN L193 SmtUtils]: Spent 307.00 ms on a formula simplification. DAG size of input: 116 DAG size of output: 106 [2020-09-25 10:06:42,706 WARN L193 SmtUtils]: Spent 293.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 101 [2020-09-25 10:06:43,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 10:06:43,989 INFO L93 Difference]: Finished difference Result 4768 states and 6214 transitions. [2020-09-25 10:06:43,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-25 10:06:43,990 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 182 [2020-09-25 10:06:43,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 10:06:44,022 INFO L225 Difference]: With dead ends: 4768 [2020-09-25 10:06:44,022 INFO L226 Difference]: Without dead ends: 3248 [2020-09-25 10:06:44,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=338, Invalid=654, Unknown=0, NotChecked=0, Total=992 [2020-09-25 10:06:44,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3248 states. [2020-09-25 10:06:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3248 to 3154. [2020-09-25 10:06:44,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3154 states. [2020-09-25 10:06:44,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3154 states to 3154 states and 3807 transitions. [2020-09-25 10:06:44,180 INFO L78 Accepts]: Start accepts. Automaton has 3154 states and 3807 transitions. Word has length 182 [2020-09-25 10:06:44,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 10:06:44,180 INFO L479 AbstractCegarLoop]: Abstraction has 3154 states and 3807 transitions. [2020-09-25 10:06:44,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 10:06:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 3154 states and 3807 transitions. [2020-09-25 10:06:44,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2020-09-25 10:06:44,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 10:06:44,194 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 10:06:44,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 10:06:44,194 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 10:06:44,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 10:06:44,195 INFO L82 PathProgramCache]: Analyzing trace with hash -211066278, now seen corresponding path program 1 times [2020-09-25 10:06:44,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 10:06:44,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1683634609] [2020-09-25 10:06:44,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 10:06:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 10:06:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:44,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 10:06:45,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking...