/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 19:28:58,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 19:28:58,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 19:28:59,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 19:28:59,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 19:28:59,017 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 19:28:59,019 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 19:28:59,022 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 19:28:59,024 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 19:28:59,026 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 19:28:59,027 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 19:28:59,028 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 19:28:59,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 19:28:59,033 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 19:28:59,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 19:28:59,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 19:28:59,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 19:28:59,040 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 19:28:59,044 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 19:28:59,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 19:28:59,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 19:28:59,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 19:28:59,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 19:28:59,055 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 19:28:59,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 19:28:59,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 19:28:59,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 19:28:59,063 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 19:28:59,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 19:28:59,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 19:28:59,064 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 19:28:59,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 19:28:59,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 19:28:59,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 19:28:59,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 19:28:59,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 19:28:59,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 19:28:59,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 19:28:59,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 19:28:59,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 19:28:59,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 19:28:59,075 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-12 19:28:59,122 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 19:28:59,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 19:28:59,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 19:28:59,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 19:28:59,125 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 19:28:59,125 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 19:28:59,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 19:28:59,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 19:28:59,126 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 19:28:59,126 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 19:28:59,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 19:28:59,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 19:28:59,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 19:28:59,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 19:28:59,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 19:28:59,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 19:28:59,128 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 19:28:59,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 19:28:59,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 19:28:59,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 19:28:59,129 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 19:28:59,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:28:59,129 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 19:28:59,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 19:28:59,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 19:28:59,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 19:28:59,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 19:28:59,130 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 19:28:59,131 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 19:28:59,131 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 19:28:59,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 19:28:59,432 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 19:28:59,438 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 19:28:59,440 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 19:28:59,440 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 19:28:59,441 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:28:59,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26738d69/38319984132d45b583603b05f1ad24d3/FLAG2e2a1af6a [2020-10-12 19:29:00,072 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 19:29:00,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/seq-mthreaded-reduced/pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:29:00,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26738d69/38319984132d45b583603b05f1ad24d3/FLAG2e2a1af6a [2020-10-12 19:29:00,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c26738d69/38319984132d45b583603b05f1ad24d3 [2020-10-12 19:29:00,383 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 19:29:00,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 19:29:00,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 19:29:00,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 19:29:00,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 19:29:00,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:29:00" (1/1) ... [2020-10-12 19:29:00,393 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77a39a0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:00, skipping insertion in model container [2020-10-12 19:29:00,393 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 07:29:00" (1/1) ... [2020-10-12 19:29:00,399 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 19:29:00,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 19:29:00,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:29:00,960 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 19:29:01,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 19:29:01,127 INFO L208 MainTranslator]: Completed translation [2020-10-12 19:29:01,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01 WrapperNode [2020-10-12 19:29:01,128 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 19:29:01,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 19:29:01,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 19:29:01,129 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 19:29:01,140 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,157 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,157 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,183 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,205 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... [2020-10-12 19:29:01,212 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 19:29:01,212 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 19:29:01,212 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 19:29:01,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 19:29:01,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 19:29:01,294 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 19:29:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 19:29:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 19:29:01,295 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 19:29:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 19:29:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-10-12 19:29:01,296 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2020-10-12 19:29:01,297 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2020-10-12 19:29:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 19:29:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 19:29:01,298 INFO L130 BoogieDeclarations]: Found specification of procedure read [2020-10-12 19:29:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure write [2020-10-12 19:29:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2020-10-12 19:29:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2020-10-12 19:29:01,299 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2020-10-12 19:29:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-10-12 19:29:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-10-12 19:29:01,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 19:29:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 19:29:01,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 19:29:02,451 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 19:29:02,452 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 19:29:02,457 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:29:02 BoogieIcfgContainer [2020-10-12 19:29:02,458 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 19:29:02,459 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 19:29:02,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 19:29:02,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 19:29:02,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 07:29:00" (1/3) ... [2020-10-12 19:29:02,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e67a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:29:02, skipping insertion in model container [2020-10-12 19:29:02,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 07:29:01" (2/3) ... [2020-10-12 19:29:02,465 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e67a9c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 07:29:02, skipping insertion in model container [2020-10-12 19:29:02,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 07:29:02" (3/3) ... [2020-10-12 19:29:02,467 INFO L109 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.ufo.BOUNDED-6.pals.c.v+lhb-reducer.c [2020-10-12 19:29:02,477 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 19:29:02,486 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-10-12 19:29:02,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-12 19:29:02,526 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 19:29:02,526 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 19:29:02,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 19:29:02,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 19:29:02,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 19:29:02,527 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 19:29:02,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 19:29:02,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 19:29:02,552 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states. [2020-10-12 19:29:02,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 19:29:02,563 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:02,564 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:02,565 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:02,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:02,572 INFO L82 PathProgramCache]: Analyzing trace with hash -932481986, now seen corresponding path program 1 times [2020-10-12 19:29:02,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:02,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120214411] [2020-10-12 19:29:02,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:02,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:03,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:03,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:04,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:07,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:07,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 19:29:07,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:29:07,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-10-12 19:29:07,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 19:29:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-12 19:29:07,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 19:29:07,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-12 19:29:08,474 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:08,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:08,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:08,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:08,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:08,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:08,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 19:29:08,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:08,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:08,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:08,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:08,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:08,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120214411] [2020-10-12 19:29:08,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:08,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:29:08,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195895766] [2020-10-12 19:29:08,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 19:29:08,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:08,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 19:29:08,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 19:29:08,568 INFO L87 Difference]: Start difference. First operand 212 states. Second operand 11 states. [2020-10-12 19:29:08,866 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification that was a NOOP. DAG size: 156 [2020-10-12 19:29:11,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:11,576 INFO L93 Difference]: Finished difference Result 749 states and 1190 transitions. [2020-10-12 19:29:11,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 19:29:11,578 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-10-12 19:29:11,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:11,598 INFO L225 Difference]: With dead ends: 749 [2020-10-12 19:29:11,598 INFO L226 Difference]: Without dead ends: 648 [2020-10-12 19:29:11,603 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=183, Invalid=573, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:29:11,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2020-10-12 19:29:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 279. [2020-10-12 19:29:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-12 19:29:11,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 359 transitions. [2020-10-12 19:29:11,678 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 359 transitions. Word has length 51 [2020-10-12 19:29:11,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:11,679 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 359 transitions. [2020-10-12 19:29:11,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 19:29:11,679 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 359 transitions. [2020-10-12 19:29:11,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-12 19:29:11,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:11,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:11,683 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 19:29:11,683 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:11,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:11,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1841418149, now seen corresponding path program 1 times [2020-10-12 19:29:11,684 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:11,684 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273712199] [2020-10-12 19:29:11,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:11,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:11,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:11,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:11,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:11,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:12,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:12,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:12,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:14,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:14,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:15,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:15,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:16,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:16,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-12 19:29:16,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-12 19:29:16,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:29:16,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:16,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 19:29:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:29:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:17,059 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:17,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:17,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:17,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:17,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:17,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:17,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:17,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 19:29:17,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:17,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:17,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:17,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:17,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:17,128 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273712199] [2020-10-12 19:29:17,128 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:17,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-12 19:29:17,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308320823] [2020-10-12 19:29:17,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 19:29:17,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:17,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 19:29:17,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-12 19:29:17,134 INFO L87 Difference]: Start difference. First operand 279 states and 359 transitions. Second operand 10 states. [2020-10-12 19:29:17,330 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification that was a NOOP. DAG size: 153 [2020-10-12 19:29:19,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:19,551 INFO L93 Difference]: Finished difference Result 2099 states and 3040 transitions. [2020-10-12 19:29:19,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-12 19:29:19,552 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-10-12 19:29:19,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:19,567 INFO L225 Difference]: With dead ends: 2099 [2020-10-12 19:29:19,568 INFO L226 Difference]: Without dead ends: 1968 [2020-10-12 19:29:19,574 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=404, Invalid=1318, Unknown=0, NotChecked=0, Total=1722 [2020-10-12 19:29:19,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1968 states. [2020-10-12 19:29:19,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1968 to 644. [2020-10-12 19:29:19,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 644 states. [2020-10-12 19:29:19,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 644 states to 644 states and 900 transitions. [2020-10-12 19:29:19,701 INFO L78 Accepts]: Start accepts. Automaton has 644 states and 900 transitions. Word has length 51 [2020-10-12 19:29:19,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:19,701 INFO L479 AbstractCegarLoop]: Abstraction has 644 states and 900 transitions. [2020-10-12 19:29:19,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 19:29:19,702 INFO L276 IsEmpty]: Start isEmpty. Operand 644 states and 900 transitions. [2020-10-12 19:29:19,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-12 19:29:19,712 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:19,712 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:19,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 19:29:19,713 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:19,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:19,713 INFO L82 PathProgramCache]: Analyzing trace with hash 191810917, now seen corresponding path program 1 times [2020-10-12 19:29:19,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:19,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152138221] [2020-10-12 19:29:19,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:19,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:19,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:19,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:19,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:20,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:21,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:22,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:22,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:22,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:23,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:24,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:24,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 19:29:24,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-12 19:29:24,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:29:24,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:29:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:24,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 19:29:24,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:29:25,069 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:25,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:25,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:25,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:25,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:25,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:25,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:29:25,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:25,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:25,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:25,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152138221] [2020-10-12 19:29:25,117 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:25,117 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 19:29:25,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458274444] [2020-10-12 19:29:25,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:29:25,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:25,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:29:25,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:29:25,120 INFO L87 Difference]: Start difference. First operand 644 states and 900 transitions. Second operand 12 states. [2020-10-12 19:29:25,359 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-12 19:29:27,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:27,106 INFO L93 Difference]: Finished difference Result 3360 states and 5017 transitions. [2020-10-12 19:29:27,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 19:29:27,109 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-10-12 19:29:27,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:27,129 INFO L225 Difference]: With dead ends: 3360 [2020-10-12 19:29:27,130 INFO L226 Difference]: Without dead ends: 2776 [2020-10-12 19:29:27,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:29:27,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2776 states. [2020-10-12 19:29:27,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2776 to 1026. [2020-10-12 19:29:27,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1026 states. [2020-10-12 19:29:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1473 transitions. [2020-10-12 19:29:27,307 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1473 transitions. Word has length 52 [2020-10-12 19:29:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:27,310 INFO L479 AbstractCegarLoop]: Abstraction has 1026 states and 1473 transitions. [2020-10-12 19:29:27,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:29:27,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1473 transitions. [2020-10-12 19:29:27,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:27,315 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:27,316 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:27,316 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 19:29:27,316 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:27,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:27,317 INFO L82 PathProgramCache]: Analyzing trace with hash -2090602010, now seen corresponding path program 1 times [2020-10-12 19:29:27,317 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:27,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55848695] [2020-10-12 19:29:27,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:27,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:27,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:27,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:27,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:27,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:28,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:30,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:30,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:32,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:32,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:29:32,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-12 19:29:32,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 19:29:32,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:29:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:32,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 19:29:32,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:32,951 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:32,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:32,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 19:29:32,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:32,991 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:32,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55848695] [2020-10-12 19:29:32,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:32,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:29:32,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424085512] [2020-10-12 19:29:32,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:29:32,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:32,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:29:32,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:29:32,994 INFO L87 Difference]: Start difference. First operand 1026 states and 1473 transitions. Second operand 13 states. [2020-10-12 19:29:33,256 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 172 [2020-10-12 19:29:33,605 WARN L193 SmtUtils]: Spent 151.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 74 [2020-10-12 19:29:35,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:35,533 INFO L93 Difference]: Finished difference Result 2679 states and 3965 transitions. [2020-10-12 19:29:35,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 19:29:35,534 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-12 19:29:35,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:35,544 INFO L225 Difference]: With dead ends: 2679 [2020-10-12 19:29:35,544 INFO L226 Difference]: Without dead ends: 1993 [2020-10-12 19:29:35,547 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:29:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1993 states. [2020-10-12 19:29:35,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1993 to 1038. [2020-10-12 19:29:35,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-12 19:29:35,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1482 transitions. [2020-10-12 19:29:35,645 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1482 transitions. Word has length 53 [2020-10-12 19:29:35,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:35,646 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1482 transitions. [2020-10-12 19:29:35,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:29:35,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1482 transitions. [2020-10-12 19:29:35,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:35,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:35,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:35,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 19:29:35,648 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:35,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:35,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1416915955, now seen corresponding path program 1 times [2020-10-12 19:29:35,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:35,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1760042510] [2020-10-12 19:29:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:35,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:35,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:35,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:37,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:37,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:37,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:37,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:38,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:40,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:40,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:29:40,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:29:40,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:29:40,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 19:29:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:29:40,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 19:29:40,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:41,307 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:41,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:41,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:41,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:41,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:41,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:41,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:41,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 19:29:41,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:29:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:41,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:29:41,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:41,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:41,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1760042510] [2020-10-12 19:29:41,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:41,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:29:41,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377382702] [2020-10-12 19:29:41,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 19:29:41,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:41,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 19:29:41,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2020-10-12 19:29:41,353 INFO L87 Difference]: Start difference. First operand 1038 states and 1482 transitions. Second operand 14 states. [2020-10-12 19:29:42,004 WARN L193 SmtUtils]: Spent 485.00 ms on a formula simplification. DAG size of input: 187 DAG size of output: 182 [2020-10-12 19:29:42,454 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-10-12 19:29:42,672 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-12 19:29:42,819 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-10-12 19:29:45,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:45,477 INFO L93 Difference]: Finished difference Result 2852 states and 4207 transitions. [2020-10-12 19:29:45,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:29:45,478 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-12 19:29:45,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:45,488 INFO L225 Difference]: With dead ends: 2852 [2020-10-12 19:29:45,488 INFO L226 Difference]: Without dead ends: 2161 [2020-10-12 19:29:45,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 230 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=242, Invalid=880, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 19:29:45,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2161 states. [2020-10-12 19:29:45,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2161 to 1038. [2020-10-12 19:29:45,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-10-12 19:29:45,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1481 transitions. [2020-10-12 19:29:45,613 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1481 transitions. Word has length 53 [2020-10-12 19:29:45,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:45,613 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1481 transitions. [2020-10-12 19:29:45,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 19:29:45,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1481 transitions. [2020-10-12 19:29:45,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:45,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:45,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:45,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 19:29:45,615 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:45,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:45,615 INFO L82 PathProgramCache]: Analyzing trace with hash -859483155, now seen corresponding path program 1 times [2020-10-12 19:29:45,616 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:45,616 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [559000399] [2020-10-12 19:29:45,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:45,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:45,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:45,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:45,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:45,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:46,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:48,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:48,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:48,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:50,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:50,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:29:50,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:29:50,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:29:50,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:50,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:29:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:29:50,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-12 19:29:50,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:51,179 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:29:51,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:29:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:51,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:51,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:29:51,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:29:51,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:29:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-12 19:29:51,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:29:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:29:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:29:51,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:29:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:29:51,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:29:51,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [559000399] [2020-10-12 19:29:51,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:29:51,232 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:29:51,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173045234] [2020-10-12 19:29:51,233 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:29:51,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:29:51,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:29:51,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:29:51,234 INFO L87 Difference]: Start difference. First operand 1038 states and 1481 transitions. Second operand 15 states. [2020-10-12 19:29:51,886 WARN L193 SmtUtils]: Spent 497.00 ms on a formula simplification. DAG size of input: 184 DAG size of output: 183 [2020-10-12 19:29:55,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:29:55,019 INFO L93 Difference]: Finished difference Result 2965 states and 4384 transitions. [2020-10-12 19:29:55,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:29:55,019 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-12 19:29:55,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:29:55,030 INFO L225 Difference]: With dead ends: 2965 [2020-10-12 19:29:55,030 INFO L226 Difference]: Without dead ends: 2261 [2020-10-12 19:29:55,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-10-12 19:29:55,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2261 states. [2020-10-12 19:29:55,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2261 to 1024. [2020-10-12 19:29:55,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1024 states. [2020-10-12 19:29:55,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1024 states to 1024 states and 1458 transitions. [2020-10-12 19:29:55,158 INFO L78 Accepts]: Start accepts. Automaton has 1024 states and 1458 transitions. Word has length 53 [2020-10-12 19:29:55,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:29:55,158 INFO L479 AbstractCegarLoop]: Abstraction has 1024 states and 1458 transitions. [2020-10-12 19:29:55,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:29:55,159 INFO L276 IsEmpty]: Start isEmpty. Operand 1024 states and 1458 transitions. [2020-10-12 19:29:55,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:29:55,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:29:55,160 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:29:55,160 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 19:29:55,161 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:29:55,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:29:55,161 INFO L82 PathProgramCache]: Analyzing trace with hash -192666720, now seen corresponding path program 1 times [2020-10-12 19:29:55,161 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:29:55,162 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [852803448] [2020-10-12 19:29:55,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:29:55,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:29:55,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:55,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:55,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:55,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:55,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:55,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:56,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:57,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:29:58,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:00,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:00,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 19:30:00,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:00,783 WARN L193 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:30:00,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:00,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:00,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:00,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:00,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:00,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:00,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:30:00,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:00,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:00,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:00,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:00,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:00,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [852803448] [2020-10-12 19:30:00,857 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:00,857 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-10-12 19:30:00,858 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264021815] [2020-10-12 19:30:00,858 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 19:30:00,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:00,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 19:30:00,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2020-10-12 19:30:00,860 INFO L87 Difference]: Start difference. First operand 1024 states and 1458 transitions. Second operand 15 states. [2020-10-12 19:30:01,449 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 173 DAG size of output: 170 [2020-10-12 19:30:03,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:03,608 INFO L93 Difference]: Finished difference Result 1404 states and 1970 transitions. [2020-10-12 19:30:03,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 19:30:03,608 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 53 [2020-10-12 19:30:03,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:03,613 INFO L225 Difference]: With dead ends: 1404 [2020-10-12 19:30:03,613 INFO L226 Difference]: Without dead ends: 1391 [2020-10-12 19:30:03,614 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=192, Invalid=678, Unknown=0, NotChecked=0, Total=870 [2020-10-12 19:30:03,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1391 states. [2020-10-12 19:30:03,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1391 to 1045. [2020-10-12 19:30:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1045 states. [2020-10-12 19:30:03,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1045 states to 1045 states and 1488 transitions. [2020-10-12 19:30:03,755 INFO L78 Accepts]: Start accepts. Automaton has 1045 states and 1488 transitions. Word has length 53 [2020-10-12 19:30:03,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:03,755 INFO L479 AbstractCegarLoop]: Abstraction has 1045 states and 1488 transitions. [2020-10-12 19:30:03,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 19:30:03,756 INFO L276 IsEmpty]: Start isEmpty. Operand 1045 states and 1488 transitions. [2020-10-12 19:30:03,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:30:03,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:03,757 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:03,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 19:30:03,757 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:03,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:03,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1713733881, now seen corresponding path program 1 times [2020-10-12 19:30:03,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:03,758 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [500379200] [2020-10-12 19:30:03,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:03,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:03,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:03,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:03,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:03,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:04,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:05,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:06,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:08,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:08,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:30:08,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-12 19:30:08,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 19:30:08,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:30:08,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:08,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-12 19:30:08,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:09,281 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:30:09,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:09,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:09,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:09,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:09,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:09,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:09,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:30:09,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:09,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:09,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:09,319 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:09,319 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [500379200] [2020-10-12 19:30:09,320 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:09,320 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:30:09,320 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849929302] [2020-10-12 19:30:09,321 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:30:09,322 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:09,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:30:09,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:30:09,325 INFO L87 Difference]: Start difference. First operand 1045 states and 1488 transitions. Second operand 13 states. [2020-10-12 19:30:09,559 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification that was a NOOP. DAG size: 166 [2020-10-12 19:30:09,943 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 68 [2020-10-12 19:30:11,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:11,732 INFO L93 Difference]: Finished difference Result 2120 states and 3107 transitions. [2020-10-12 19:30:11,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:30:11,733 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-12 19:30:11,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:11,738 INFO L225 Difference]: With dead ends: 2120 [2020-10-12 19:30:11,738 INFO L226 Difference]: Without dead ends: 1440 [2020-10-12 19:30:11,740 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=129, Invalid=471, Unknown=0, NotChecked=0, Total=600 [2020-10-12 19:30:11,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-10-12 19:30:11,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1191. [2020-10-12 19:30:11,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1191 states. [2020-10-12 19:30:11,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1191 states to 1191 states and 1711 transitions. [2020-10-12 19:30:11,900 INFO L78 Accepts]: Start accepts. Automaton has 1191 states and 1711 transitions. Word has length 53 [2020-10-12 19:30:11,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:11,900 INFO L479 AbstractCegarLoop]: Abstraction has 1191 states and 1711 transitions. [2020-10-12 19:30:11,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:30:11,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1191 states and 1711 transitions. [2020-10-12 19:30:11,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-12 19:30:11,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:11,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:11,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 19:30:11,902 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:11,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:11,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1156301081, now seen corresponding path program 1 times [2020-10-12 19:30:11,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:11,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [804864250] [2020-10-12 19:30:11,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:11,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:11,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:11,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:13,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:13,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:16,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 19:30:16,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:17,135 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-10-12 19:30:17,293 WARN L193 SmtUtils]: Spent 150.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 43 [2020-10-12 19:30:17,871 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:30:17,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:17,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:17,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:17,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:17,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:17,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:17,903 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [804864250] [2020-10-12 19:30:17,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:17,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:30:17,904 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71782593] [2020-10-12 19:30:17,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:30:17,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:17,905 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:30:17,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:30:17,905 INFO L87 Difference]: Start difference. First operand 1191 states and 1711 transitions. Second operand 13 states. [2020-10-12 19:30:18,518 WARN L193 SmtUtils]: Spent 443.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 181 [2020-10-12 19:30:18,820 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 56 [2020-10-12 19:30:21,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:21,054 INFO L93 Difference]: Finished difference Result 3071 states and 4590 transitions. [2020-10-12 19:30:21,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 19:30:21,054 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-12 19:30:21,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:21,065 INFO L225 Difference]: With dead ends: 3071 [2020-10-12 19:30:21,065 INFO L226 Difference]: Without dead ends: 2230 [2020-10-12 19:30:21,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=117, Invalid=389, Unknown=0, NotChecked=0, Total=506 [2020-10-12 19:30:21,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2230 states. [2020-10-12 19:30:21,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2230 to 1161. [2020-10-12 19:30:21,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1161 states. [2020-10-12 19:30:21,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1161 states to 1161 states and 1668 transitions. [2020-10-12 19:30:21,265 INFO L78 Accepts]: Start accepts. Automaton has 1161 states and 1668 transitions. Word has length 53 [2020-10-12 19:30:21,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:21,265 INFO L479 AbstractCegarLoop]: Abstraction has 1161 states and 1668 transitions. [2020-10-12 19:30:21,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:30:21,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1161 states and 1668 transitions. [2020-10-12 19:30:21,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:30:21,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:21,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:21,267 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 19:30:21,267 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:21,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:21,268 INFO L82 PathProgramCache]: Analyzing trace with hash -513085755, now seen corresponding path program 1 times [2020-10-12 19:30:21,268 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:21,268 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417196187] [2020-10-12 19:30:21,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:21,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:21,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:21,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:22,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:26,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:26,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:30:26,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-12 19:30:26,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-12 19:30:26,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 19:30:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:26,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-12 19:30:26,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:26,615 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:30:26,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:26,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:26,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:26,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:26,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:26,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:26,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 19:30:26,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:26,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:26,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:26,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:26,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417196187] [2020-10-12 19:30:26,639 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:26,639 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-12 19:30:26,640 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54707509] [2020-10-12 19:30:26,640 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 19:30:26,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:26,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 19:30:26,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-12 19:30:26,641 INFO L87 Difference]: Start difference. First operand 1161 states and 1668 transitions. Second operand 12 states. [2020-10-12 19:30:26,895 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 161 [2020-10-12 19:30:28,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:28,644 INFO L93 Difference]: Finished difference Result 2996 states and 4402 transitions. [2020-10-12 19:30:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:30:28,644 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2020-10-12 19:30:28,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:28,651 INFO L225 Difference]: With dead ends: 2996 [2020-10-12 19:30:28,651 INFO L226 Difference]: Without dead ends: 2098 [2020-10-12 19:30:28,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=497, Unknown=0, NotChecked=0, Total=650 [2020-10-12 19:30:28,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2020-10-12 19:30:28,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1154. [2020-10-12 19:30:28,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1154 states. [2020-10-12 19:30:28,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1653 transitions. [2020-10-12 19:30:28,801 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1653 transitions. Word has length 54 [2020-10-12 19:30:28,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:28,801 INFO L479 AbstractCegarLoop]: Abstraction has 1154 states and 1653 transitions. [2020-10-12 19:30:28,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 19:30:28,801 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1653 transitions. [2020-10-12 19:30:28,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:30:28,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:28,803 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:28,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 19:30:28,803 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:28,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:28,803 INFO L82 PathProgramCache]: Analyzing trace with hash -48996249, now seen corresponding path program 1 times [2020-10-12 19:30:28,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:28,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2140855272] [2020-10-12 19:30:28,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:28,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:28,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:28,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:29,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:29,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:29,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:30,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:31,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:32,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:32,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:32,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:33,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:33,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:30:33,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-12 19:30:33,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:30:33,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:33,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 19:30:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-12 19:30:33,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-12 19:30:33,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:34,370 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:30:34,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:34,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:34,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:34,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:34,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:34,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-12 19:30:34,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:34,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 19:30:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:34,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 19:30:34,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 19:30:34,439 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:34,439 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2140855272] [2020-10-12 19:30:34,440 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:34,440 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-12 19:30:34,440 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249201391] [2020-10-12 19:30:34,441 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 19:30:34,442 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:34,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 19:30:34,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-10-12 19:30:34,443 INFO L87 Difference]: Start difference. First operand 1154 states and 1653 transitions. Second operand 17 states. [2020-10-12 19:30:34,583 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 44 [2020-10-12 19:30:35,175 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification. DAG size of input: 181 DAG size of output: 179 [2020-10-12 19:30:37,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:37,955 INFO L93 Difference]: Finished difference Result 1352 states and 1893 transitions. [2020-10-12 19:30:37,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 19:30:37,956 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 54 [2020-10-12 19:30:37,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:37,960 INFO L225 Difference]: With dead ends: 1352 [2020-10-12 19:30:37,960 INFO L226 Difference]: Without dead ends: 1339 [2020-10-12 19:30:37,961 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=282, Invalid=1050, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 19:30:37,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1339 states. [2020-10-12 19:30:38,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1339 to 1158. [2020-10-12 19:30:38,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1158 states. [2020-10-12 19:30:38,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1158 states to 1158 states and 1660 transitions. [2020-10-12 19:30:38,115 INFO L78 Accepts]: Start accepts. Automaton has 1158 states and 1660 transitions. Word has length 54 [2020-10-12 19:30:38,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:38,116 INFO L479 AbstractCegarLoop]: Abstraction has 1158 states and 1660 transitions. [2020-10-12 19:30:38,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 19:30:38,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1158 states and 1660 transitions. [2020-10-12 19:30:38,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-12 19:30:38,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:38,117 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:38,117 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 19:30:38,117 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:38,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:38,117 INFO L82 PathProgramCache]: Analyzing trace with hash 1654693028, now seen corresponding path program 1 times [2020-10-12 19:30:38,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:38,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619382497] [2020-10-12 19:30:38,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:38,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:38,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:38,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:39,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:40,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:41,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:43,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 26 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-12 19:30:43,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:43,900 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 148 [2020-10-12 19:30:43,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 19:30:43,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:43,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:43,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:43,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 19:30:43,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 19:30:43,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-12 19:30:43,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 19:30:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 19:30:43,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 19:30:43,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 19:30:43,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 19:30:43,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1619382497] [2020-10-12 19:30:43,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 19:30:43,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-10-12 19:30:43,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260685846] [2020-10-12 19:30:43,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 19:30:43,940 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 19:30:43,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 19:30:43,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-12 19:30:43,942 INFO L87 Difference]: Start difference. First operand 1158 states and 1660 transitions. Second operand 13 states. [2020-10-12 19:30:44,337 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification that was a NOOP. DAG size: 188 [2020-10-12 19:30:44,627 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 19:30:44,780 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 44 [2020-10-12 19:30:44,968 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 52 [2020-10-12 19:30:45,174 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 56 [2020-10-12 19:30:45,369 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 19:30:45,822 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-12 19:30:46,156 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 48 [2020-10-12 19:30:47,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 19:30:47,988 INFO L93 Difference]: Finished difference Result 1900 states and 2755 transitions. [2020-10-12 19:30:47,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 19:30:47,989 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 54 [2020-10-12 19:30:47,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 19:30:47,995 INFO L225 Difference]: With dead ends: 1900 [2020-10-12 19:30:47,995 INFO L226 Difference]: Without dead ends: 1893 [2020-10-12 19:30:47,996 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2020-10-12 19:30:47,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2020-10-12 19:30:48,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1163. [2020-10-12 19:30:48,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1163 states. [2020-10-12 19:30:48,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1666 transitions. [2020-10-12 19:30:48,145 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1666 transitions. Word has length 54 [2020-10-12 19:30:48,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 19:30:48,146 INFO L479 AbstractCegarLoop]: Abstraction has 1163 states and 1666 transitions. [2020-10-12 19:30:48,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 19:30:48,146 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1666 transitions. [2020-10-12 19:30:48,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-12 19:30:48,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 19:30:48,147 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 19:30:48,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 19:30:48,147 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 19:30:48,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 19:30:48,147 INFO L82 PathProgramCache]: Analyzing trace with hash 1621841869, now seen corresponding path program 1 times [2020-10-12 19:30:48,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 19:30:48,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [91725776] [2020-10-12 19:30:48,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 19:30:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 19:30:48,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:48,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:49,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 19:30:51,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 19:30:51,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-12 19:30:51,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-12 19:30:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3202 [2020-10-12 19:30:51,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 19:30:51,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 19:30:51,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-12 19:30:51,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-12 19:30:51,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0