/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:46,613 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:46,618 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:46,666 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:46,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:46,677 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:46,679 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:46,684 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:46,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:46,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:46,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:46,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:46,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:46,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:46,691 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:46,692 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:46,693 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:46,694 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:46,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:46,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:46,699 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:46,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:46,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:46,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:46,706 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:46,706 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:46,706 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:46,707 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:46,708 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:46,709 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:46,709 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:46,711 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:46,711 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:46,712 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:46,714 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:46,714 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:46,715 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:46,715 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:46,716 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:46,717 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:46,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:46,719 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 [2020-09-24 20:22:46,745 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:46,745 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:46,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:46,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:46,747 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:46,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:46,748 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:46,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:46,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:46,748 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:46,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:46,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:46,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:46,749 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:46,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:46,750 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:46,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:46,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:46,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:46,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:46,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:46,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:46,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:46,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:46,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:46,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:46,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:46,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:46,753 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:46,753 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:22:47,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:47,236 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:47,241 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:47,243 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:47,243 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:47,244 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-24 20:22:47,326 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add2f6a7e/0ec224fba7784958aeffebfdf64859de/FLAGad5409c0f [2020-09-24 20:22:47,830 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:47,833 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-24 20:22:47,843 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add2f6a7e/0ec224fba7784958aeffebfdf64859de/FLAGad5409c0f [2020-09-24 20:22:48,158 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/add2f6a7e/0ec224fba7784958aeffebfdf64859de [2020-09-24 20:22:48,173 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:48,180 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:48,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:48,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:48,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:48,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75e37eeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48, skipping insertion in model container [2020-09-24 20:22:48,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:48,229 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:22:48,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:48,523 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:22:48,547 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:22:48,562 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:22:48,562 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48 WrapperNode [2020-09-24 20:22:48,562 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:48,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:22:48,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:22:48,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:22:48,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,673 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (1/1) ... [2020-09-24 20:22:48,684 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:22:48,685 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:22:48,685 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:22:48,685 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:22:48,686 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (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 [2020-09-24 20:22:48,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:22:48,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:22:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 20:22:48,774 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:22:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:22:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 20:22:48,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 20:22:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:22:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:22:48,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:22:49,101 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:22:49,102 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 20:22:49,107 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:49 BoogieIcfgContainer [2020-09-24 20:22:49,107 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:22:49,108 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:22:49,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:22:49,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:22:49,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:48" (1/3) ... [2020-09-24 20:22:49,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3766701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:49, skipping insertion in model container [2020-09-24 20:22:49,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:48" (2/3) ... [2020-09-24 20:22:49,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3766701b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:22:49, skipping insertion in model container [2020-09-24 20:22:49,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:22:49" (3/3) ... [2020-09-24 20:22:49,117 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-09-24 20:22:49,138 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:22:49,162 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:22:49,185 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:22:49,216 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:22:49,216 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:22:49,217 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:22:49,217 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:22:49,217 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:22:49,217 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:22:49,217 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:22:49,217 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:22:49,239 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-24 20:22:49,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 20:22:49,246 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:49,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:49,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:49,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:49,255 INFO L82 PathProgramCache]: Analyzing trace with hash -7732671, now seen corresponding path program 1 times [2020-09-24 20:22:49,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:49,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1168420897] [2020-09-24 20:22:49,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:49,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:49,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:49,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:49,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:22:49,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:49,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-24 20:22:49,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:49,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 20:22:49,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:49,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:22:49,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:49,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:49,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:49,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:49,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:49,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:49,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:49,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:49,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:49,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1168420897] [2020-09-24 20:22:49,546 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:49,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-24 20:22:49,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837360887] [2020-09-24 20:22:49,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-24 20:22:49,555 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:49,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-24 20:22:49,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 20:22:49,578 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-09-24 20:22:49,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:49,615 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-09-24 20:22:49,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-24 20:22:49,617 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-24 20:22:49,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:49,629 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:22:49,629 INFO L226 Difference]: Without dead ends: 45 [2020-09-24 20:22:49,634 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-24 20:22:49,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-24 20:22:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-24 20:22:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-24 20:22:49,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-09-24 20:22:49,684 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 12 [2020-09-24 20:22:49,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:49,685 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-09-24 20:22:49,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-24 20:22:49,685 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-09-24 20:22:49,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-24 20:22:49,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:49,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:22:49,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:22:49,687 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:49,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:49,688 INFO L82 PathProgramCache]: Analyzing trace with hash -87155477, now seen corresponding path program 1 times [2020-09-24 20:22:49,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:49,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358019886] [2020-09-24 20:22:49,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:49,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:49,819 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:49,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-24 20:22:49,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:49,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-24 20:22:49,820 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:49,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:22:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:22:49,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 20:22:49,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:49,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:49,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:49,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:49,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:49,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:49,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:49,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:49,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:49,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:22:49,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:22:49,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358019886] [2020-09-24 20:22:49,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:22:49,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-24 20:22:49,923 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023741149] [2020-09-24 20:22:49,925 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-24 20:22:49,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:49,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-24 20:22:49,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:22:49,926 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 3 states. [2020-09-24 20:22:50,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:50,028 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-24 20:22:50,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-24 20:22:50,030 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-24 20:22:50,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:50,032 INFO L225 Difference]: With dead ends: 55 [2020-09-24 20:22:50,032 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:22:50,035 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-24 20:22:50,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:22:50,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-24 20:22:50,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:22:50,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-09-24 20:22:50,053 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 12 [2020-09-24 20:22:50,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:50,054 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-09-24 20:22:50,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-24 20:22:50,054 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-09-24 20:22:50,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:22:50,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:50,055 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] [2020-09-24 20:22:50,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:22:50,056 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:50,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash -1575516068, now seen corresponding path program 1 times [2020-09-24 20:22:50,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:50,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921817774] [2020-09-24 20:22:50,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:50,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:50,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:51,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:51,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:22:51,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 20:22:51,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1479 [2020-09-24 20:22:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:22:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:22:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:22:51,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:22:54,603 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (* 4294967296 (div c_main_~y~0 4294967296)))) (or (<= (+ c_main_~y~0 1) .cse0) (let ((.cse37 (div c_main_~y~0 2))) (let ((.cse21 (* 2 .cse37)) (.cse19 (div c_main_~x~0 2))) (let ((.cse35 (* .cse37 (- 2))) (.cse36 (* .cse19 (- 2))) (.cse13 (= c_main_~y~0 .cse21))) (let ((.cse24 (< c_main_~y~0 .cse0)) (.cse25 (not .cse13)) (.cse5 (div (+ .cse36 c_main_~x~0 (- 2)) 4294967296)) (.cse27 (div (+ c_main_~y~0 .cse35 (- 2)) 4294967296)) (.cse1 (div (+ .cse36 c_main_~x~0) 4294967296)) (.cse31 (* 2 .cse19)) (.cse28 (div (+ c_main_~y~0 .cse35) 4294967296)) (.cse34 (* 4294967296 (div c_main_~x~0 4294967296)))) (let ((.cse7 (<= .cse34 c_main_~x~0)) (.cse29 (* 4294967296 .cse28)) (.cse6 (= c_main_~x~0 .cse31)) (.cse32 (* 4294967296 .cse1)) (.cse30 (* 4294967296 .cse27)) (.cse33 (* 4294967296 .cse5)) (.cse14 (<= .cse0 c_main_~y~0)) (.cse15 (and .cse24 .cse25))) (let ((.cse20 (and (or .cse13 (< 0 .cse27) .cse14) (or (< 0 .cse28) .cse15))) (.cse9 (+ .cse31 c_main_~y~0 .cse33 1)) (.cse8 (+ c_main_~x~0 .cse21 .cse30)) (.cse11 (+ .cse31 .cse32 c_main_~y~0)) (.cse10 (+ c_main_~x~0 .cse21 .cse30 1)) (.cse3 (< c_main_~x~0 .cse34)) (.cse4 (not .cse6)) (.cse17 (+ .cse31 c_main_~y~0 .cse33 3)) (.cse18 (+ .cse31 .cse32 c_main_~y~0 1)) (.cse16 (+ c_main_~x~0 .cse29 .cse21)) (.cse2 (or .cse6 .cse7))) (and (or (and (<= (+ .cse1 1) 0) .cse2) (and .cse3 .cse4 (<= (+ .cse5 1) 0)) (let ((.cse12 (and .cse3 .cse4))) (and (or (and (or .cse6 .cse7 (< .cse8 .cse9)) (or (< .cse10 .cse11) .cse12)) .cse13 .cse14) (or .cse15 (and (or .cse6 .cse7 (< .cse16 .cse17)) (or (< .cse16 .cse18) .cse12))))) (and (or (<= 20 c_main_~x~0) (< 9 .cse19)) (or (<= c_main_~x~0 20) .cse20 (<= .cse19 9)))) (let ((.cse23 (or .cse13 .cse14))) (or (let ((.cse26 (+ .cse30 .cse21)) (.cse22 (+ .cse29 .cse21))) (and (or (<= c_main_~y~0 .cse21) (and (<= c_main_~y~0 .cse22) .cse23) (and .cse24 .cse25 (<= c_main_~y~0 .cse26)) .cse20) (or (and .cse24 (<= .cse26 c_main_~y~0) .cse25) (and .cse24 .cse25 (<= .cse27 0)) (and (<= .cse22 c_main_~y~0) .cse23) (and (<= .cse28 0) .cse23)))) (and .cse24 .cse25 (or (and .cse3 (<= .cse9 .cse8) .cse4) (and (<= .cse11 .cse10) .cse2))) .cse13 (and (or (and .cse3 .cse4 (<= .cse17 .cse16)) (and (<= .cse18 .cse16) .cse2)) .cse23)))))))))))) is different from true [2020-09-24 20:22:54,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:22:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:54,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:54,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:54,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:22:54,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:22:54,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:22:54,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:22:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:22:54,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:22:54,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-09-24 20:22:54,679 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921817774] [2020-09-24 20:22:54,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:22:54,680 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:22:54,680 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792806095] [2020-09-24 20:22:54,681 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:22:54,681 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:22:54,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:22:54,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=183, Unknown=1, NotChecked=26, Total=240 [2020-09-24 20:22:54,682 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 16 states. [2020-09-24 20:22:56,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:22:56,359 INFO L93 Difference]: Finished difference Result 195 states and 260 transitions. [2020-09-24 20:22:56,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 20:22:56,360 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 33 [2020-09-24 20:22:56,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:22:56,365 INFO L225 Difference]: With dead ends: 195 [2020-09-24 20:22:56,366 INFO L226 Difference]: Without dead ends: 154 [2020-09-24 20:22:56,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=34, Invalid=209, Unknown=1, NotChecked=28, Total=272 [2020-09-24 20:22:56,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-24 20:22:56,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 127. [2020-09-24 20:22:56,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-24 20:22:56,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 155 transitions. [2020-09-24 20:22:56,408 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 155 transitions. Word has length 33 [2020-09-24 20:22:56,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:22:56,409 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 155 transitions. [2020-09-24 20:22:56,409 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:22:56,409 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 155 transitions. [2020-09-24 20:22:56,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:22:56,411 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:22:56,413 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] [2020-09-24 20:22:56,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:22:56,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:22:56,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:22:56,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1539703076, now seen corresponding path program 1 times [2020-09-24 20:22:56,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:22:56,414 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [147884923] [2020-09-24 20:22:56,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:22:56,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:22:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:22:57,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:22:57,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:22:57,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-09-24 20:22:57,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1051 [2020-09-24 20:22:57,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:22:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:22:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:22:57,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:22:57,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:22:59,881 WARN L193 SmtUtils]: Spent 2.11 s on a formula simplification. DAG size of input: 41 DAG size of output: 19 [2020-09-24 20:23:08,665 WARN L193 SmtUtils]: Spent 8.48 s on a formula simplification. DAG size of input: 120 DAG size of output: 28 [2020-09-24 20:23:08,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:08,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:08,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:08,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:08,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:08,718 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [147884923] [2020-09-24 20:23:08,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:08,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:23:08,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426896774] [2020-09-24 20:23:08,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:23:08,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:08,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:23:08,721 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:08,721 INFO L87 Difference]: Start difference. First operand 127 states and 155 transitions. Second operand 12 states. [2020-09-24 20:23:09,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:09,773 INFO L93 Difference]: Finished difference Result 246 states and 305 transitions. [2020-09-24 20:23:09,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:23:09,773 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-09-24 20:23:09,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:09,776 INFO L225 Difference]: With dead ends: 246 [2020-09-24 20:23:09,776 INFO L226 Difference]: Without dead ends: 134 [2020-09-24 20:23:09,777 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 11.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-09-24 20:23:09,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-09-24 20:23:09,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 115. [2020-09-24 20:23:09,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-09-24 20:23:09,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 141 transitions. [2020-09-24 20:23:09,790 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 141 transitions. Word has length 33 [2020-09-24 20:23:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:09,791 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 141 transitions. [2020-09-24 20:23:09,791 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:23:09,791 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 141 transitions. [2020-09-24 20:23:09,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:09,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:09,793 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] [2020-09-24 20:23:09,793 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:09,793 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash -243170692, now seen corresponding path program 1 times [2020-09-24 20:23:09,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:09,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915550357] [2020-09-24 20:23:09,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:11,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:11,644 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:23:11,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-09-24 20:23:11,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1837 [2020-09-24 20:23:11,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:11,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:11,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,474 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 127 DAG size of output: 25 [2020-09-24 20:23:12,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:12,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:12,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:12,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:12,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:12,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915550357] [2020-09-24 20:23:12,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:12,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:12,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637377822] [2020-09-24 20:23:12,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:12,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:12,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:12,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:12,536 INFO L87 Difference]: Start difference. First operand 115 states and 141 transitions. Second operand 11 states. [2020-09-24 20:23:13,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:13,239 INFO L93 Difference]: Finished difference Result 230 states and 296 transitions. [2020-09-24 20:23:13,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:23:13,240 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-24 20:23:13,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:13,244 INFO L225 Difference]: With dead ends: 230 [2020-09-24 20:23:13,244 INFO L226 Difference]: Without dead ends: 164 [2020-09-24 20:23:13,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:13,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-09-24 20:23:13,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 87. [2020-09-24 20:23:13,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-24 20:23:13,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 108 transitions. [2020-09-24 20:23:13,264 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 108 transitions. Word has length 33 [2020-09-24 20:23:13,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:13,265 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 108 transitions. [2020-09-24 20:23:13,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:13,265 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 108 transitions. [2020-09-24 20:23:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:13,273 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:13,273 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] [2020-09-24 20:23:13,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:13,274 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:13,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:13,274 INFO L82 PathProgramCache]: Analyzing trace with hash 625868124, now seen corresponding path program 1 times [2020-09-24 20:23:13,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:13,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227955516] [2020-09-24 20:23:13,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:13,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:13,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:13,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:23:14,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:23:14,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-09-24 20:23:14,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:14,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:14,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:16,547 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse35 (div c_main_~x~0 2))) (let ((.cse37 (* 4294967296 (div c_main_~x~0 4294967296))) (.cse20 (* 2 .cse35))) (let ((.cse36 (* .cse35 (- 2))) (.cse12 (= c_main_~x~0 .cse20)) (.cse13 (<= .cse37 c_main_~x~0))) (let ((.cse2 (or .cse12 .cse13)) (.cse3 (< c_main_~x~0 .cse37)) (.cse4 (not .cse12)) (.cse0 (* 4294967296 (div c_main_~y~0 4294967296))) (.cse5 (div (+ .cse36 c_main_~x~0 (- 2)) 4294967296)) (.cse1 (div (+ .cse36 c_main_~x~0) 4294967296))) (or (<= (+ c_main_~y~0 1) .cse0) (and (<= (+ .cse1 1) 0) .cse2) (and .cse3 .cse4 (<= (+ .cse5 1) 0)) (let ((.cse19 (+ c_main_~x~0 6)) (.cse6 (+ .cse35 4))) (and (or (<= .cse6 0) (let ((.cse34 (div c_main_~y~0 2))) (let ((.cse33 (* .cse34 (- 2))) (.cse22 (* 2 .cse34))) (let ((.cse14 (= c_main_~y~0 .cse22)) (.cse31 (div (+ c_main_~y~0 .cse33) 4294967296)) (.cse30 (div (+ c_main_~y~0 .cse33 (- 2)) 4294967296))) (let ((.cse23 (* 4294967296 .cse30)) (.cse24 (* 4294967296 .cse1)) (.cse32 (* 4294967296 .cse31)) (.cse21 (* 4294967296 .cse5)) (.cse27 (< c_main_~y~0 .cse0)) (.cse28 (not .cse14))) (let ((.cse7 (and .cse27 .cse28)) (.cse11 (+ .cse20 c_main_~y~0 .cse21 2)) (.cse9 (+ c_main_~x~0 .cse32 .cse22)) (.cse10 (+ .cse20 .cse24 c_main_~y~0)) (.cse15 (+ c_main_~x~0 .cse22 .cse23 2)) (.cse17 (+ .cse20 c_main_~y~0 .cse21)) (.cse16 (+ c_main_~x~0 .cse22 .cse23)) (.cse18 (<= .cse0 c_main_~y~0))) (and (let ((.cse8 (and .cse3 .cse4))) (or (and (or .cse7 (and (or .cse8 (< .cse9 .cse10)) (or (< .cse9 .cse11) .cse12 .cse13))) (or .cse14 (and (or (< .cse15 .cse10) .cse8) (or (< .cse16 .cse17) .cse12 .cse13)) .cse18)) (<= .cse19 0) (and (or (and (or .cse12 .cse13 (< .cse16 (+ .cse20 c_main_~y~0 .cse21 1))) (or (< (+ c_main_~x~0 .cse22 .cse23 1) .cse10) .cse8)) .cse14 .cse18) (or .cse7 (and (or .cse12 .cse13 (< .cse9 (+ .cse20 c_main_~y~0 .cse21 3))) (or (< .cse9 (+ .cse20 .cse24 c_main_~y~0 1)) .cse8)))))) (let ((.cse26 (or .cse14 .cse18))) (or (let ((.cse29 (+ .cse23 .cse22)) (.cse25 (+ .cse32 .cse22))) (and (or (<= c_main_~y~0 .cse22) (and (<= c_main_~y~0 .cse25) .cse26) (and .cse27 .cse28 (<= c_main_~y~0 .cse29)) (and (or .cse14 (< 0 .cse30) .cse18) (or (< 0 .cse31) .cse7))) (or (and .cse27 (<= .cse29 c_main_~y~0) .cse28) (and .cse27 .cse28 (<= .cse30 0)) (and (<= .cse25 c_main_~y~0) .cse26) (and (<= .cse31 0) .cse26)))) .cse14 (and .cse26 (or (and .cse3 .cse4 (<= .cse11 .cse9)) (and (<= .cse10 .cse9) .cse2))) (and .cse27 .cse28 (or (and (<= .cse10 .cse15) .cse2) (and .cse3 .cse4 (<= .cse17 .cse16))))))))))))) (or (<= 0 .cse19) (< 0 .cse6))))))))) is different from true [2020-09-24 20:23:16,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:16,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:16,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:16,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:16,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:16,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:16,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:16,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:16,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:16,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:16,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2020-09-24 20:23:16,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227955516] [2020-09-24 20:23:16,589 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:16,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:16,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635382526] [2020-09-24 20:23:16,590 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:16,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:16,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:16,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=71, Unknown=1, NotChecked=16, Total=110 [2020-09-24 20:23:16,591 INFO L87 Difference]: Start difference. First operand 87 states and 108 transitions. Second operand 11 states. [2020-09-24 20:23:16,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:16,884 INFO L93 Difference]: Finished difference Result 175 states and 215 transitions. [2020-09-24 20:23:16,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:16,885 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-24 20:23:16,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:16,886 INFO L225 Difference]: With dead ends: 175 [2020-09-24 20:23:16,886 INFO L226 Difference]: Without dead ends: 95 [2020-09-24 20:23:16,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=22, Invalid=71, Unknown=1, NotChecked=16, Total=110 [2020-09-24 20:23:16,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-09-24 20:23:16,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 80. [2020-09-24 20:23:16,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-24 20:23:16,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2020-09-24 20:23:16,897 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 33 [2020-09-24 20:23:16,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:16,897 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2020-09-24 20:23:16,897 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:16,897 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2020-09-24 20:23:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:16,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:16,899 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] [2020-09-24 20:23:16,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:16,899 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:16,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:16,900 INFO L82 PathProgramCache]: Analyzing trace with hash 1873408444, now seen corresponding path program 1 times [2020-09-24 20:23:16,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:16,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1404680939] [2020-09-24 20:23:16,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:16,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:18,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:18,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 20:23:18,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 20:23:18,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1129 [2020-09-24 20:23:18,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 20:23:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:18,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,891 WARN L193 SmtUtils]: Spent 6.38 s on a formula simplification. DAG size of input: 133 DAG size of output: 27 [2020-09-24 20:23:26,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:26,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:26,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:26,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:26,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:26,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:26,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:26,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:26,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:26,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1404680939] [2020-09-24 20:23:26,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:26,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 20:23:26,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851289474] [2020-09-24 20:23:26,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 20:23:26,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:26,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 20:23:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=89, Unknown=1, NotChecked=0, Total=110 [2020-09-24 20:23:26,943 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand 11 states. [2020-09-24 20:23:28,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:28,388 INFO L93 Difference]: Finished difference Result 230 states and 286 transitions. [2020-09-24 20:23:28,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:23:28,389 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-24 20:23:28,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:28,392 INFO L225 Difference]: With dead ends: 230 [2020-09-24 20:23:28,392 INFO L226 Difference]: Without dead ends: 189 [2020-09-24 20:23:28,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 8.8s TimeCoverageRelationStatistics Valid=24, Invalid=107, Unknown=1, NotChecked=0, Total=132 [2020-09-24 20:23:28,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-09-24 20:23:28,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 141. [2020-09-24 20:23:28,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-09-24 20:23:28,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 180 transitions. [2020-09-24 20:23:28,404 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 180 transitions. Word has length 33 [2020-09-24 20:23:28,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:28,404 INFO L479 AbstractCegarLoop]: Abstraction has 141 states and 180 transitions. [2020-09-24 20:23:28,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 20:23:28,405 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 180 transitions. [2020-09-24 20:23:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:28,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:28,406 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] [2020-09-24 20:23:28,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:28,407 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:28,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:28,407 INFO L82 PathProgramCache]: Analyzing trace with hash 132907260, now seen corresponding path program 1 times [2020-09-24 20:23:28,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:28,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1874462661] [2020-09-24 20:23:28,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:28,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 20:23:28,420 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 20:23:28,421 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 20:23:28,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:28,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 08:23:28 BoogieIcfgContainer [2020-09-24 20:23:28,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 20:23:28,447 INFO L168 Benchmark]: Toolchain (without parser) took 40271.45 ms. Allocated memory was 146.3 MB in the beginning and 326.6 MB in the end (delta: 180.4 MB). Free memory was 102.7 MB in the beginning and 200.2 MB in the end (delta: -97.5 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-09-24 20:23:28,448 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-24 20:23:28,448 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.97 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 20:23:28,449 INFO L168 Benchmark]: Boogie Preprocessor took 121.37 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 20:23:28,450 INFO L168 Benchmark]: RCFGBuilder took 422.17 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 163.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-24 20:23:28,451 INFO L168 Benchmark]: TraceAbstraction took 39336.37 ms. Allocated memory was 202.4 MB in the beginning and 326.6 MB in the end (delta: 124.3 MB). Free memory was 163.0 MB in the beginning and 200.2 MB in the end (delta: -37.2 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. [2020-09-24 20:23:28,455 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 381.97 ms. Allocated memory is still 146.3 MB. Free memory was 102.1 MB in the beginning and 91.9 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.37 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 180.9 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.17 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 163.7 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 39336.37 ms. Allocated memory was 202.4 MB in the beginning and 326.6 MB in the end (delta: 124.3 MB). Free memory was 163.0 MB in the beginning and 200.2 MB in the end (delta: -37.2 MB). Peak memory consumption was 87.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] unsigned int x = 0; [L13] unsigned int y = __VERIFIER_nondet_uint(); [L15] COND TRUE x < 99 [L16] COND FALSE !(y % 2 == 0) [L17] x += 2 [L19] COND FALSE !(y % 2 == 0) [L20] x -= 2 [L22] COND FALSE !(y % 2 == 0) [L23] x += 2 [L25] COND FALSE !(y % 2 == 0) [L26] x -= 2 [L28] COND FALSE !(y % 2 == 0) [L29] x += 2 [L31] COND FALSE !(y % 2 == 0) [L32] x -= 4 [L34] COND FALSE !(y % 2 == 0) [L35] x += 4 [L37] COND FALSE !(y % 2 == 0) [L38] x += 2 [L40] COND FALSE !(y % 2 == 0) [L41] x -= 4 [L43] COND FALSE !(y % 2 == 0) [L44] x -= 4 [L15] COND FALSE !(x < 99) [L47] CALL __VERIFIER_assert((x % 2) == (y % 2)) [L5] COND TRUE !(cond) [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 39.2s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 336 SDtfs, 239 SDslu, 1162 SDs, 0 SdLazy, 3561 SolverSat, 243 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 104 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 26.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=141occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 190 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 33.2s InterpolantComputationTime, 222 NumberOfCodeBlocks, 222 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 182 ConstructedInterpolants, 0 QuantifiedInterpolants, 194232 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 0/5 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...