/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=0.3 --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 [2020-09-25 12:13:32,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:13:32,960 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:13:33,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:13:33,014 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:13:33,015 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:13:33,017 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:13:33,019 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:13:33,021 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:13:33,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:13:33,023 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:13:33,025 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:13:33,025 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:13:33,026 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:13:33,028 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:13:33,029 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:13:33,030 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:13:33,032 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:13:33,034 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:13:33,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:13:33,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:13:33,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:13:33,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:13:33,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:13:33,045 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:13:33,045 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:13:33,045 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:13:33,047 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:13:33,047 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:13:33,048 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:13:33,049 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:13:33,050 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:13:33,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:13:33,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:13:33,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:13:33,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:13:33,055 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:13:33,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:13:33,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:13:33,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:13:33,057 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:13:33,058 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 12:13:33,109 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:13:33,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:13:33,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:13:33,111 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:13:33,111 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:13:33,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:13:33,113 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:13:33,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:13:33,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:13:33,113 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:13:33,114 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:13:33,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:13:33,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:13:33,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:13:33,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:13:33,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:13:33,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:13:33,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:13:33,117 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:13:33,117 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:13:33,118 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:13:33,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:33,118 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:13:33,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:13:33,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:13:33,119 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:13:33,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:13:33,119 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:13:33,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:13:33,120 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:13:33,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:13:33,598 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:13:33,603 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:13:33,605 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:13:33,605 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:13:33,607 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-25 12:13:33,700 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f30b127e5/943a9c9608574e01bbce2fd6bd087b25/FLAG96365563f [2020-09-25 12:13:34,241 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:13:34,242 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector-loops/diamond_2-1.c [2020-09-25 12:13:34,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f30b127e5/943a9c9608574e01bbce2fd6bd087b25/FLAG96365563f [2020-09-25 12:13:34,575 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f30b127e5/943a9c9608574e01bbce2fd6bd087b25 [2020-09-25 12:13:34,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:13:34,596 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:13:34,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:34,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:13:34,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:13:34,603 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c3c9999 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:34, skipping insertion in model container [2020-09-25 12:13:34,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:34" (1/1) ... [2020-09-25 12:13:34,618 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:13:34,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:13:35,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:35,006 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:13:35,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:35,048 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:13:35,049 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35 WrapperNode [2020-09-25 12:13:35,049 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:35,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:13:35,050 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:13:35,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:13:35,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,162 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,163 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,169 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,177 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,179 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (1/1) ... [2020-09-25 12:13:35,181 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:13:35,182 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:13:35,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:13:35,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:13:35,184 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (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 12:13:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:13:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:13:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:13:35,269 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:13:35,269 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:13:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 12:13:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:13:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:13:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:13:35,270 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:13:35,610 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:13:35,611 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:13:35,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:35 BoogieIcfgContainer [2020-09-25 12:13:35,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:13:35,618 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:13:35,618 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:13:35,622 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:13:35,622 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:13:34" (1/3) ... [2020-09-25 12:13:35,624 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378e0b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:35, skipping insertion in model container [2020-09-25 12:13:35,624 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:35" (2/3) ... [2020-09-25 12:13:35,625 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@378e0b35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:35, skipping insertion in model container [2020-09-25 12:13:35,625 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:35" (3/3) ... [2020-09-25 12:13:35,627 INFO L109 eAbstractionObserver]: Analyzing ICFG diamond_2-1.c [2020-09-25 12:13:35,641 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:13:35,652 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:13:35,683 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:13:35,714 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:13:35,714 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:13:35,714 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:13:35,714 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:13:35,714 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:13:35,715 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:13:35,715 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:13:35,715 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:13:35,740 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2020-09-25 12:13:35,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 12:13:35,747 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:35,748 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:35,749 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:35,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:35,756 INFO L82 PathProgramCache]: Analyzing trace with hash -7732671, now seen corresponding path program 1 times [2020-09-25 12:13:35,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:35,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1692625546] [2020-09-25 12:13:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:35,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:35,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:13:36,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-25 12:13:36,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:13:36,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:36,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:13:36,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:36,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:36,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:36,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:36,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:36,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:36,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,057 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 12:13:36,058 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1692625546] [2020-09-25 12:13:36,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:36,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-09-25 12:13:36,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079024760] [2020-09-25 12:13:36,069 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-09-25 12:13:36,069 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:36,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-09-25 12:13:36,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-09-25 12:13:36,093 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 2 states. [2020-09-25 12:13:36,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:36,129 INFO L93 Difference]: Finished difference Result 62 states and 75 transitions. [2020-09-25 12:13:36,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-09-25 12:13:36,131 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 12 [2020-09-25 12:13:36,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:36,144 INFO L225 Difference]: With dead ends: 62 [2020-09-25 12:13:36,144 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 12:13:36,149 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 [2020-09-25 12:13:36,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 12:13:36,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 12:13:36,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 12:13:36,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-09-25 12:13:36,203 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 12 [2020-09-25 12:13:36,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:36,203 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-09-25 12:13:36,204 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-09-25 12:13:36,204 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-09-25 12:13:36,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-25 12:13:36,205 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:36,205 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:36,206 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:13:36,206 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:36,207 INFO L82 PathProgramCache]: Analyzing trace with hash -87155477, now seen corresponding path program 1 times [2020-09-25 12:13:36,207 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:36,208 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989322968] [2020-09-25 12:13:36,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:36,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 12:13:36,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-09-25 12:13:36,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:13:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:13:36,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 12:13:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:36,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:36,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:36,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:13:36,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:36,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:36,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:36,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:36,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:36,470 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 12:13:36,471 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989322968] [2020-09-25 12:13:36,471 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:36,471 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:13:36,472 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264800326] [2020-09-25 12:13:36,474 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:13:36,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:36,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:13:36,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:13:36,476 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 3 states. [2020-09-25 12:13:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:36,554 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-09-25 12:13:36,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:13:36,555 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-09-25 12:13:36,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:36,556 INFO L225 Difference]: With dead ends: 55 [2020-09-25 12:13:36,556 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 12:13:36,558 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 [2020-09-25 12:13:36,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 12:13:36,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-25 12:13:36,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 12:13:36,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2020-09-25 12:13:36,567 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 12 [2020-09-25 12:13:36,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:36,570 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2020-09-25 12:13:36,570 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:13:36,571 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2020-09-25 12:13:36,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:13:36,572 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:36,572 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] [2020-09-25 12:13:36,573 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:13:36,573 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:36,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:36,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1575516068, now seen corresponding path program 1 times [2020-09-25 12:13:36,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:36,576 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [539295578] [2020-09-25 12:13:36,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:36,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:36,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:37,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:37,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:13:37,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 12:13:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1350 [2020-09-25 12:13:37,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:37,980 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:13:37,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:13:37,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:13:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:38,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:38,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:38,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:38,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:38,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:38,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:38,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:38,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:38,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:38,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:38,357 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:13:38,358 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [539295578] [2020-09-25 12:13:38,358 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:38,358 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:13:38,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273356028] [2020-09-25 12:13:38,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:13:38,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:38,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:13:38,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:38,363 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 13 states. [2020-09-25 12:13:40,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:40,299 INFO L93 Difference]: Finished difference Result 385 states and 509 transitions. [2020-09-25 12:13:40,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:13:40,299 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 12:13:40,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:40,307 INFO L225 Difference]: With dead ends: 385 [2020-09-25 12:13:40,307 INFO L226 Difference]: Without dead ends: 380 [2020-09-25 12:13:40,308 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:40,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2020-09-25 12:13:40,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 297. [2020-09-25 12:13:40,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2020-09-25 12:13:40,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 395 transitions. [2020-09-25 12:13:40,343 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 395 transitions. Word has length 33 [2020-09-25 12:13:40,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:40,343 INFO L479 AbstractCegarLoop]: Abstraction has 297 states and 395 transitions. [2020-09-25 12:13:40,343 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:13:40,343 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 395 transitions. [2020-09-25 12:13:40,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:13:40,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:40,346 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] [2020-09-25 12:13:40,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:13:40,347 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:40,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:40,347 INFO L82 PathProgramCache]: Analyzing trace with hash -2068476932, now seen corresponding path program 1 times [2020-09-25 12:13:40,348 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:40,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019121770] [2020-09-25 12:13:40,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:40,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:40,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:40,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:13:42,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-09-25 12:13:42,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1678 [2020-09-25 12:13:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:13:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:13:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:13:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:42,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:42,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:42,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:42,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:42,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:13:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:42,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:42,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:42,278 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:13:42,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019121770] [2020-09-25 12:13:42,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:42,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 12:13:42,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845108568] [2020-09-25 12:13:42,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 12:13:42,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:42,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 12:13:42,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:42,281 INFO L87 Difference]: Start difference. First operand 297 states and 395 transitions. Second operand 13 states. [2020-09-25 12:13:43,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:43,951 INFO L93 Difference]: Finished difference Result 591 states and 781 transitions. [2020-09-25 12:13:43,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:13:43,951 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 33 [2020-09-25 12:13:43,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:43,957 INFO L225 Difference]: With dead ends: 591 [2020-09-25 12:13:43,957 INFO L226 Difference]: Without dead ends: 586 [2020-09-25 12:13:43,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:13:43,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-25 12:13:44,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 467. [2020-09-25 12:13:44,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 467 states. [2020-09-25 12:13:44,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 627 transitions. [2020-09-25 12:13:44,029 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 627 transitions. Word has length 33 [2020-09-25 12:13:44,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:44,029 INFO L479 AbstractCegarLoop]: Abstraction has 467 states and 627 transitions. [2020-09-25 12:13:44,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 12:13:44,029 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 627 transitions. [2020-09-25 12:13:44,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:13:44,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:44,034 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] [2020-09-25 12:13:44,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:13:44,035 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:44,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:44,035 INFO L82 PathProgramCache]: Analyzing trace with hash -1539703076, now seen corresponding path program 1 times [2020-09-25 12:13:44,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:44,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [598943397] [2020-09-25 12:13:44,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:44,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:44,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:44,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:45,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:45,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:13:45,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 30 [2020-09-25 12:13:45,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 995 [2020-09-25 12:13:45,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:45,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:13:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:13:45,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:13:45,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:08,451 WARN L193 SmtUtils]: Spent 18.76 s on a formula simplification. DAG size of input: 118 DAG size of output: 28 [2020-09-25 12:14:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:08,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:08,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:08,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:08,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 1 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:14:08,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [598943397] [2020-09-25 12:14:08,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:08,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:14:08,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613426632] [2020-09-25 12:14:08,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:14:08,504 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:08,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:14:08,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=103, Unknown=2, NotChecked=0, Total=132 [2020-09-25 12:14:08,504 INFO L87 Difference]: Start difference. First operand 467 states and 627 transitions. Second operand 12 states. [2020-09-25 12:14:09,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:09,485 INFO L93 Difference]: Finished difference Result 1065 states and 1434 transitions. [2020-09-25 12:14:09,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:14:09,485 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 33 [2020-09-25 12:14:09,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:09,489 INFO L225 Difference]: With dead ends: 1065 [2020-09-25 12:14:09,489 INFO L226 Difference]: Without dead ends: 602 [2020-09-25 12:14:09,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 23.3s TimeCoverageRelationStatistics Valid=35, Invalid=145, Unknown=2, NotChecked=0, Total=182 [2020-09-25 12:14:09,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-09-25 12:14:09,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 576. [2020-09-25 12:14:09,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 576 states. [2020-09-25 12:14:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 776 transitions. [2020-09-25 12:14:09,514 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 776 transitions. Word has length 33 [2020-09-25 12:14:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:09,514 INFO L479 AbstractCegarLoop]: Abstraction has 576 states and 776 transitions. [2020-09-25 12:14:09,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:14:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 776 transitions. [2020-09-25 12:14:09,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:14:09,517 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:09,517 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] [2020-09-25 12:14:09,518 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:14:09,518 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:09,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:09,518 INFO L82 PathProgramCache]: Analyzing trace with hash -243170692, now seen corresponding path program 1 times [2020-09-25 12:14:09,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:09,519 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437484719] [2020-09-25 12:14:09,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:09,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:14:11,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 29 [2020-09-25 12:14:11,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1918 [2020-09-25 12:14:11,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:11,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:14:11,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:11,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:11,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:11,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:11,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:11,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:14:11,591 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437484719] [2020-09-25 12:14:11,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:11,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:14:11,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694287224] [2020-09-25 12:14:11,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:11,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:11,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:11,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:11,594 INFO L87 Difference]: Start difference. First operand 576 states and 776 transitions. Second operand 7 states. [2020-09-25 12:14:11,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:11,982 INFO L93 Difference]: Finished difference Result 689 states and 925 transitions. [2020-09-25 12:14:11,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:11,983 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:14:11,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:11,987 INFO L225 Difference]: With dead ends: 689 [2020-09-25 12:14:11,987 INFO L226 Difference]: Without dead ends: 684 [2020-09-25 12:14:11,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:11,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 684 states. [2020-09-25 12:14:12,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 684 to 628. [2020-09-25 12:14:12,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-09-25 12:14:12,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 849 transitions. [2020-09-25 12:14:12,007 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 849 transitions. Word has length 33 [2020-09-25 12:14:12,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:12,008 INFO L479 AbstractCegarLoop]: Abstraction has 628 states and 849 transitions. [2020-09-25 12:14:12,008 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:12,008 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 849 transitions. [2020-09-25 12:14:12,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:14:12,010 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:12,010 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] [2020-09-25 12:14:12,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:14:12,010 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:12,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:12,011 INFO L82 PathProgramCache]: Analyzing trace with hash -1983671876, now seen corresponding path program 1 times [2020-09-25 12:14:12,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:12,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453342529] [2020-09-25 12:14:12,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:12,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:14:12,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 12:14:12,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-09-25 12:14:12,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 12:14:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:14:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:23,432 WARN L193 SmtUtils]: Spent 8.23 s on a formula simplification. DAG size of input: 63 DAG size of output: 11 [2020-09-25 12:14:27,435 WARN L193 SmtUtils]: Spent 3.97 s on a formula simplification. DAG size of input: 63 DAG size of output: 10 [2020-09-25 12:14:35,564 WARN L193 SmtUtils]: Spent 7.95 s on a formula simplification. DAG size of input: 130 DAG size of output: 28 [2020-09-25 12:14:35,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:35,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:35,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:35,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:35,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:35,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:35,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:35,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:35,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:35,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:35,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:35,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:35,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:14:35,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453342529] [2020-09-25 12:14:35,607 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:35,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:14:35,607 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781668923] [2020-09-25 12:14:35,608 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:14:35,608 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:35,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:14:35,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=84, Unknown=1, NotChecked=0, Total=110 [2020-09-25 12:14:35,609 INFO L87 Difference]: Start difference. First operand 628 states and 849 transitions. Second operand 11 states. [2020-09-25 12:14:36,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:36,235 INFO L93 Difference]: Finished difference Result 735 states and 994 transitions. [2020-09-25 12:14:36,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:14:36,236 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-09-25 12:14:36,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:36,237 INFO L225 Difference]: With dead ends: 735 [2020-09-25 12:14:36,237 INFO L226 Difference]: Without dead ends: 154 [2020-09-25 12:14:36,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 22.5s TimeCoverageRelationStatistics Valid=29, Invalid=102, Unknown=1, NotChecked=0, Total=132 [2020-09-25 12:14:36,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-09-25 12:14:36,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 104. [2020-09-25 12:14:36,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-09-25 12:14:36,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 132 transitions. [2020-09-25 12:14:36,245 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 132 transitions. Word has length 33 [2020-09-25 12:14:36,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:36,246 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 132 transitions. [2020-09-25 12:14:36,246 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:14:36,246 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 132 transitions. [2020-09-25 12:14:36,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:14:36,247 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:36,247 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] [2020-09-25 12:14:36,247 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:14:36,248 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:36,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:36,248 INFO L82 PathProgramCache]: Analyzing trace with hash 1873408444, now seen corresponding path program 1 times [2020-09-25 12:14:36,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:36,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [39301290] [2020-09-25 12:14:36,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:37,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-25 12:14:37,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-25 12:14:37,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-09-25 12:14:37,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:37,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:14:37,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 12:14:37,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:37,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:37,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:37,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:37,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:37,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:37,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:37,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:37,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:37,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:37,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:37,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:37,451 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:14:37,451 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [39301290] [2020-09-25 12:14:37,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:37,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:14:37,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726028934] [2020-09-25 12:14:37,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:14:37,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:37,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:14:37,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:14:37,453 INFO L87 Difference]: Start difference. First operand 104 states and 132 transitions. Second operand 8 states. [2020-09-25 12:14:37,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:37,964 INFO L93 Difference]: Finished difference Result 290 states and 366 transitions. [2020-09-25 12:14:37,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:14:37,965 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 12:14:37,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:37,967 INFO L225 Difference]: With dead ends: 290 [2020-09-25 12:14:37,968 INFO L226 Difference]: Without dead ends: 252 [2020-09-25 12:14:37,968 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:14:37,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-09-25 12:14:37,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 136. [2020-09-25 12:14:37,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-09-25 12:14:37,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 175 transitions. [2020-09-25 12:14:37,976 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 175 transitions. Word has length 33 [2020-09-25 12:14:37,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:37,976 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 175 transitions. [2020-09-25 12:14:37,977 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:14:37,977 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 175 transitions. [2020-09-25 12:14:37,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:14:37,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:37,977 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] [2020-09-25 12:14:37,978 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:14:37,978 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:37,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:37,978 INFO L82 PathProgramCache]: Analyzing trace with hash 132907260, now seen corresponding path program 1 times [2020-09-25 12:14:37,978 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:37,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1601393178] [2020-09-25 12:14:37,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 12:14:37,992 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 12:14:37,992 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 12:14:37,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:14:38,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:14:38 BoogieIcfgContainer [2020-09-25 12:14:38,018 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:14:38,021 INFO L168 Benchmark]: Toolchain (without parser) took 63429.81 ms. Allocated memory was 144.2 MB in the beginning and 328.7 MB in the end (delta: 184.5 MB). Free memory was 104.2 MB in the beginning and 180.4 MB in the end (delta: -76.3 MB). Peak memory consumption was 108.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:38,021 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:14:38,022 INFO L168 Benchmark]: CACSL2BoogieTranslator took 452.39 ms. Allocated memory is still 144.2 MB. Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:38,023 INFO L168 Benchmark]: Boogie Preprocessor took 131.94 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 93.4 MB in the beginning and 181.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:38,024 INFO L168 Benchmark]: RCFGBuilder took 434.58 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 164.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:38,024 INFO L168 Benchmark]: TraceAbstraction took 62400.66 ms. Allocated memory was 203.4 MB in the beginning and 328.7 MB in the end (delta: 125.3 MB). Free memory was 164.3 MB in the beginning and 180.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 109.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:14:38,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 144.2 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 452.39 ms. Allocated memory is still 144.2 MB. Free memory was 103.6 MB in the beginning and 93.4 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.94 ms. Allocated memory was 144.2 MB in the beginning and 203.4 MB in the end (delta: 59.2 MB). Free memory was 93.4 MB in the beginning and 181.6 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 434.58 ms. Allocated memory is still 203.4 MB. Free memory was 181.6 MB in the beginning and 164.3 MB in the end (delta: 17.3 MB). Peak memory consumption was 17.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 62400.66 ms. Allocated memory was 203.4 MB in the beginning and 328.7 MB in the end (delta: 125.3 MB). Free memory was 164.3 MB in the beginning and 180.4 MB in the end (delta: -16.1 MB). Peak memory consumption was 109.2 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: 62.2s, OverallIterations: 9, TraceHistogramMax: 1, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 754 SDtfs, 682 SDslu, 4436 SDs, 0 SdLazy, 5774 SolverSat, 512 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 108 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 46.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=628occurred in iteration=6, 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, 8 MinimizatonAttempts, 454 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 55.3s InterpolantComputationTime, 255 NumberOfCodeBlocks, 255 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 214 ConstructedInterpolants, 0 QuantifiedInterpolants, 49720 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 0/6 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...