/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:19:05,011 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:19:05,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:19:05,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:19:05,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:19:05,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:19:05,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:19:05,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:19:05,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:19:05,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:19:05,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:19:05,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:19:05,086 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:19:05,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:19:05,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:19:05,095 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:19:05,097 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:19:05,098 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:19:05,100 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:19:05,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:19:05,111 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:19:05,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:19:05,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:19:05,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:19:05,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:19:05,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:19:05,132 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:19:05,133 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:19:05,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:19:05,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:19:05,138 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:19:05,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:19:05,144 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:19:05,145 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:19:05,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:19:05,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:19:05,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:19:05,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:19:05,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:19:05,150 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:19:05,151 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:19:05,152 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:19:05,183 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:19:05,183 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:19:05,184 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:19:05,185 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:19:05,185 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:19:05,185 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:19:05,185 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:19:05,186 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:19:05,186 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:19:05,186 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:19:05,186 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:19:05,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:19:05,187 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:19:05,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:19:05,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:19:05,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:19:05,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:19:05,188 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:19:05,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:19:05,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:19:05,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:19:05,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:05,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:19:05,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:19:05,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:19:05,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:19:05,190 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:19:05,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:19:05,190 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:19:05,190 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:19:05,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:19:05,733 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:19:05,741 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:19:05,744 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:19:05,744 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:19:05,746 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 11:19:05,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e35e925be/d1adb73defd74870a0382bf213be9e36/FLAG03c804db9 [2020-09-25 11:19:06,420 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:19:06,421 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label22.c [2020-09-25 11:19:06,436 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e35e925be/d1adb73defd74870a0382bf213be9e36/FLAG03c804db9 [2020-09-25 11:19:06,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e35e925be/d1adb73defd74870a0382bf213be9e36 [2020-09-25 11:19:06,706 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:19:06,715 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:19:06,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:06,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:19:06,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:19:06,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:06" (1/1) ... [2020-09-25 11:19:06,732 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ee0cdab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:06, skipping insertion in model container [2020-09-25 11:19:06,733 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:19:06" (1/1) ... [2020-09-25 11:19:06,743 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:19:06,822 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:19:07,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:07,490 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:19:07,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:19:07,693 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:19:07,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07 WrapperNode [2020-09-25 11:19:07,693 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:19:07,694 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:19:07,695 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:19:07,695 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:19:07,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,797 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,819 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... [2020-09-25 11:19:07,834 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:19:07,836 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:19:07,836 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:19:07,836 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:19:07,837 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:19:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:19:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:19:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 11:19:07,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:19:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 11:19:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:19:07,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:19:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 11:19:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:19:07,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:19:07,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:19:09,520 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:19:09,520 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 11:19:09,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:09 BoogieIcfgContainer [2020-09-25 11:19:09,530 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:19:09,532 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:19:09,532 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:19:09,536 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:19:09,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:19:06" (1/3) ... [2020-09-25 11:19:09,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f6eddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:09, skipping insertion in model container [2020-09-25 11:19:09,538 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:19:07" (2/3) ... [2020-09-25 11:19:09,539 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36f6eddb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:19:09, skipping insertion in model container [2020-09-25 11:19:09,539 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:19:09" (3/3) ... [2020-09-25 11:19:09,541 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label22.c [2020-09-25 11:19:09,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:19:09,571 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:19:09,599 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:19:09,645 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:19:09,646 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:19:09,647 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:19:09,647 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:19:09,647 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:19:09,647 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:19:09,648 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:19:09,648 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:19:09,700 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 11:19:09,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 11:19:09,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:09,716 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:09,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:09,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:09,726 INFO L82 PathProgramCache]: Analyzing trace with hash 382162911, now seen corresponding path program 1 times [2020-09-25 11:19:09,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:09,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453239657] [2020-09-25 11:19:09,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:10,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:10,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:10,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 11:19:10,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:10,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 825 [2020-09-25 11:19:10,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:10,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:10,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 11:19:10,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 11:19:10,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 11:19:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:11,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:11,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:11,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:11,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:11,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:11,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:11,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:11,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:11,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:19:11,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:11,043 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:11,044 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453239657] [2020-09-25 11:19:11,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:11,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 11:19:11,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500104293] [2020-09-25 11:19:11,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 11:19:11,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:11,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 11:19:11,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 11:19:11,082 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 11:19:13,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:13,035 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 11:19:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:19:13,037 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-25 11:19:13,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:13,061 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 11:19:13,062 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 11:19:13,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:19:13,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 11:19:13,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 11:19:13,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 11:19:13,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 11:19:13,172 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 56 [2020-09-25 11:19:13,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:13,172 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 11:19:13,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 11:19:13,173 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 11:19:13,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-09-25 11:19:13,181 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:13,181 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:13,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:19:13,182 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:13,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:13,182 INFO L82 PathProgramCache]: Analyzing trace with hash -701735608, now seen corresponding path program 1 times [2020-09-25 11:19:13,183 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:13,183 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488842307] [2020-09-25 11:19:13,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:13,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:13,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:13,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:15,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 11:19:15,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:15,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2062 [2020-09-25 11:19:15,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:15,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:15,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:19:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:15,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-09-25 11:19:15,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:15,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:15,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:15,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:15,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:15,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 11:19:15,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:15,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:15,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:15,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:15,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:15,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:15,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:15,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:15,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:15,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:15,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 11:19:15,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:15,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:15,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:15,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:15,782 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 32 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 11:19:15,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488842307] [2020-09-25 11:19:15,784 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:15,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:19:15,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738661083] [2020-09-25 11:19:15,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:15,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:15,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:15,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:15,789 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 7 states. [2020-09-25 11:19:18,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:18,065 INFO L93 Difference]: Finished difference Result 1258 states and 1571 transitions. [2020-09-25 11:19:18,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:19:18,068 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 136 [2020-09-25 11:19:18,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:18,072 INFO L225 Difference]: With dead ends: 1258 [2020-09-25 11:19:18,073 INFO L226 Difference]: Without dead ends: 730 [2020-09-25 11:19:18,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:18,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 730 states. [2020-09-25 11:19:18,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 730 to 699. [2020-09-25 11:19:18,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 11:19:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 855 transitions. [2020-09-25 11:19:18,115 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 855 transitions. Word has length 136 [2020-09-25 11:19:18,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:18,118 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 855 transitions. [2020-09-25 11:19:18,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:18,118 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 855 transitions. [2020-09-25 11:19:18,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2020-09-25 11:19:18,125 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:18,125 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:18,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:19:18,128 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:18,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:18,129 INFO L82 PathProgramCache]: Analyzing trace with hash -1690817075, now seen corresponding path program 1 times [2020-09-25 11:19:18,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:18,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116146769] [2020-09-25 11:19:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:18,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:19,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:21,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 11:19:21,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:19:21,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2966 [2020-09-25 11:19:21,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:21,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:21,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 11:19:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:21,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 128 [2020-09-25 11:19:21,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:21,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:21,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:21,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:21,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:21,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:21,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 11:19:21,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:21,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:21,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:21,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:21,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:21,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:21,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:21,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 11:19:21,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:21,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 11:19:21,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:21,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:21,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:19:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:21,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 11:19:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 11:19:21,918 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:21,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116146769] [2020-09-25 11:19:21,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:21,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 11:19:21,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726379363] [2020-09-25 11:19:21,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 11:19:21,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:21,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 11:19:21,991 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:21,991 INFO L87 Difference]: Start difference. First operand 699 states and 855 transitions. Second operand 12 states. [2020-09-25 11:19:25,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:25,223 INFO L93 Difference]: Finished difference Result 1337 states and 1690 transitions. [2020-09-25 11:19:25,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 11:19:25,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 145 [2020-09-25 11:19:25,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:25,238 INFO L225 Difference]: With dead ends: 1337 [2020-09-25 11:19:25,238 INFO L226 Difference]: Without dead ends: 775 [2020-09-25 11:19:25,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2020-09-25 11:19:25,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 775 states. [2020-09-25 11:19:25,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 775 to 699. [2020-09-25 11:19:25,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 699 states. [2020-09-25 11:19:25,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 854 transitions. [2020-09-25 11:19:25,314 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 854 transitions. Word has length 145 [2020-09-25 11:19:25,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:25,316 INFO L479 AbstractCegarLoop]: Abstraction has 699 states and 854 transitions. [2020-09-25 11:19:25,321 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 11:19:25,321 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 854 transitions. [2020-09-25 11:19:25,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2020-09-25 11:19:25,330 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:25,333 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:25,333 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:19:25,334 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:25,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:25,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1000161707, now seen corresponding path program 1 times [2020-09-25 11:19:25,334 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:25,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382087137] [2020-09-25 11:19:25,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:25,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:25,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:25,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:26,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:27,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 11:19:27,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:27,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1646 [2020-09-25 11:19:27,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:27,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:27,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-09-25 11:19:27,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:27,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:27,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:27,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:27,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:27,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:27,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:27,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:27,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:27,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:27,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:27,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:27,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 11:19:27,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:27,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-25 11:19:27,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:27,313 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:27,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:27,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 11:19:27,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:27,419 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:27,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382087137] [2020-09-25 11:19:27,420 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:27,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:19:27,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462957995] [2020-09-25 11:19:27,422 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:19:27,422 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:27,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:19:27,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:19:27,423 INFO L87 Difference]: Start difference. First operand 699 states and 854 transitions. Second operand 8 states. [2020-09-25 11:19:30,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:30,796 INFO L93 Difference]: Finished difference Result 1659 states and 2138 transitions. [2020-09-25 11:19:30,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 11:19:30,799 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 147 [2020-09-25 11:19:30,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:30,809 INFO L225 Difference]: With dead ends: 1659 [2020-09-25 11:19:30,809 INFO L226 Difference]: Without dead ends: 1125 [2020-09-25 11:19:30,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:19:30,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1125 states. [2020-09-25 11:19:30,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1125 to 1037. [2020-09-25 11:19:30,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-09-25 11:19:30,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1256 transitions. [2020-09-25 11:19:30,857 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1256 transitions. Word has length 147 [2020-09-25 11:19:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:30,858 INFO L479 AbstractCegarLoop]: Abstraction has 1037 states and 1256 transitions. [2020-09-25 11:19:30,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:19:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1256 transitions. [2020-09-25 11:19:30,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-09-25 11:19:30,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:30,862 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:30,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:19:30,863 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:30,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:30,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1483736159, now seen corresponding path program 1 times [2020-09-25 11:19:30,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:30,864 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279434589] [2020-09-25 11:19:30,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:30,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:30,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:31,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:33,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:34,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:35,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:35,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 175 [2020-09-25 11:19:35,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:19:35,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 11:19:35,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:35,914 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:19:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 11:19:35,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 11:19:35,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:36,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:36,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:36,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:36,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:36,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 11:19:36,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:36,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:36,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 11:19:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:36,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:36,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:36,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:36,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 11:19:36,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:36,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-09-25 11:19:36,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:36,549 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:36,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 11:19:36,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:36,792 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 39 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:36,793 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279434589] [2020-09-25 11:19:36,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:36,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:19:36,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605889274] [2020-09-25 11:19:36,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:19:36,795 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:36,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:19:36,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:19:36,796 INFO L87 Difference]: Start difference. First operand 1037 states and 1256 transitions. Second operand 10 states. [2020-09-25 11:19:40,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:40,237 INFO L93 Difference]: Finished difference Result 2312 states and 3000 transitions. [2020-09-25 11:19:40,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:19:40,240 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 164 [2020-09-25 11:19:40,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:40,249 INFO L225 Difference]: With dead ends: 2312 [2020-09-25 11:19:40,249 INFO L226 Difference]: Without dead ends: 1723 [2020-09-25 11:19:40,252 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:19:40,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2020-09-25 11:19:40,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 1533. [2020-09-25 11:19:40,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1533 states. [2020-09-25 11:19:40,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1533 states to 1533 states and 1898 transitions. [2020-09-25 11:19:40,298 INFO L78 Accepts]: Start accepts. Automaton has 1533 states and 1898 transitions. Word has length 164 [2020-09-25 11:19:40,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:40,298 INFO L479 AbstractCegarLoop]: Abstraction has 1533 states and 1898 transitions. [2020-09-25 11:19:40,298 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:19:40,298 INFO L276 IsEmpty]: Start isEmpty. Operand 1533 states and 1898 transitions. [2020-09-25 11:19:40,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-09-25 11:19:40,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:40,301 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:40,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:19:40,302 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:40,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:40,302 INFO L82 PathProgramCache]: Analyzing trace with hash -1959608273, now seen corresponding path program 1 times [2020-09-25 11:19:40,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:40,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357460930] [2020-09-25 11:19:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:40,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:40,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:42,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 189 [2020-09-25 11:19:44,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:19:44,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3868 [2020-09-25 11:19:44,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:19:44,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 11:19:44,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 11:19:44,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:44,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:44,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 11:19:44,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:44,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:19:44,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:44,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:44,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:44,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:44,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 11:19:44,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:44,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 11:19:44,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:44,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:44,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:44,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-09-25 11:19:44,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:44,701 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 40 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:19:44,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357460930] [2020-09-25 11:19:44,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:19:44,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:19:44,703 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923117682] [2020-09-25 11:19:44,703 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:19:44,704 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:44,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:19:44,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:19:44,704 INFO L87 Difference]: Start difference. First operand 1533 states and 1898 transitions. Second operand 7 states. [2020-09-25 11:19:47,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:19:47,124 INFO L93 Difference]: Finished difference Result 3271 states and 4300 transitions. [2020-09-25 11:19:47,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 11:19:47,125 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-09-25 11:19:47,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:19:47,134 INFO L225 Difference]: With dead ends: 3271 [2020-09-25 11:19:47,134 INFO L226 Difference]: Without dead ends: 1906 [2020-09-25 11:19:47,138 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-25 11:19:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2020-09-25 11:19:47,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1838. [2020-09-25 11:19:47,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1838 states. [2020-09-25 11:19:47,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1838 states to 1838 states and 2203 transitions. [2020-09-25 11:19:47,186 INFO L78 Accepts]: Start accepts. Automaton has 1838 states and 2203 transitions. Word has length 178 [2020-09-25 11:19:47,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:19:47,186 INFO L479 AbstractCegarLoop]: Abstraction has 1838 states and 2203 transitions. [2020-09-25 11:19:47,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:19:47,186 INFO L276 IsEmpty]: Start isEmpty. Operand 1838 states and 2203 transitions. [2020-09-25 11:19:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-09-25 11:19:47,189 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:19:47,190 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:19:47,190 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:19:47,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:19:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:19:47,191 INFO L82 PathProgramCache]: Analyzing trace with hash 227833048, now seen corresponding path program 1 times [2020-09-25 11:19:47,191 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:19:47,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1532150688] [2020-09-25 11:19:47,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:19:47,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:47,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:47,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:48,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-09-25 11:19:50,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:19:50,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3278 [2020-09-25 11:19:50,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 11:19:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:19:50,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 216 [2020-09-25 11:19:50,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:50,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:19:50,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 11:19:50,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:19:50,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:19:50,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:19:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:50,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:19:50,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:19:50,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 11:19:50,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:50,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 11:19:50,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 11:19:50,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:50,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:19:50,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:19:50,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 11:19:50,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:50,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 11:19:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:19:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:19:51,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:19:51,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 11:19:51,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:19:51,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 172 [2020-09-25 11:19:51,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:19:51,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:19:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:19:51,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 11:19:51,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 11:19:51,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:19:51,295 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 109 proven. 36 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 11:19:51,295 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1532150688] [2020-09-25 11:19:51,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:19:51,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 11:19:51,297 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212054243] [2020-09-25 11:19:51,298 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 11:19:51,298 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:19:51,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 11:19:51,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:19:51,299 INFO L87 Difference]: Start difference. First operand 1838 states and 2203 transitions. Second operand 9 states.