/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --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/eca-rers2012/Problem05_label03.c


--------------------------------------------------------------------------------


This is Ultimate 0.1.25-adbd35c
[2020-10-14 01:12:52,554 INFO  L177        SettingsManager]: Resetting all preferences to default values...
[2020-10-14 01:12:52,557 INFO  L181        SettingsManager]: Resetting UltimateCore preferences to default values
[2020-10-14 01:12:52,602 INFO  L184        SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring...
[2020-10-14 01:12:52,602 INFO  L181        SettingsManager]: Resetting Boogie Preprocessor preferences to default values
[2020-10-14 01:12:52,611 INFO  L181        SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values
[2020-10-14 01:12:52,613 INFO  L181        SettingsManager]: Resetting Abstract Interpretation preferences to default values
[2020-10-14 01:12:52,616 INFO  L181        SettingsManager]: Resetting LassoRanker preferences to default values
[2020-10-14 01:12:52,619 INFO  L181        SettingsManager]: Resetting Reaching Definitions preferences to default values
[2020-10-14 01:12:52,622 INFO  L181        SettingsManager]: Resetting SyntaxChecker preferences to default values
[2020-10-14 01:12:52,623 INFO  L181        SettingsManager]: Resetting Sifa preferences to default values
[2020-10-14 01:12:52,624 INFO  L184        SettingsManager]: Büchi Program Product provides no preferences, ignoring...
[2020-10-14 01:12:52,624 INFO  L181        SettingsManager]: Resetting LTL2Aut preferences to default values
[2020-10-14 01:12:52,627 INFO  L181        SettingsManager]: Resetting PEA to Boogie preferences to default values
[2020-10-14 01:12:52,630 INFO  L181        SettingsManager]: Resetting BlockEncodingV2 preferences to default values
[2020-10-14 01:12:52,633 INFO  L181        SettingsManager]: Resetting ChcToBoogie preferences to default values
[2020-10-14 01:12:52,634 INFO  L181        SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values
[2020-10-14 01:12:52,635 INFO  L181        SettingsManager]: Resetting BuchiAutomizer preferences to default values
[2020-10-14 01:12:52,636 INFO  L181        SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values
[2020-10-14 01:12:52,642 INFO  L181        SettingsManager]: Resetting CodeCheck preferences to default values
[2020-10-14 01:12:52,649 INFO  L181        SettingsManager]: Resetting InvariantSynthesis preferences to default values
[2020-10-14 01:12:52,650 INFO  L181        SettingsManager]: Resetting RCFGBuilder preferences to default values
[2020-10-14 01:12:52,651 INFO  L181        SettingsManager]: Resetting Referee preferences to default values
[2020-10-14 01:12:52,652 INFO  L181        SettingsManager]: Resetting TraceAbstraction preferences to default values
[2020-10-14 01:12:52,664 INFO  L184        SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring...
[2020-10-14 01:12:52,665 INFO  L184        SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring...
[2020-10-14 01:12:52,665 INFO  L181        SettingsManager]: Resetting TreeAutomizer preferences to default values
[2020-10-14 01:12:52,668 INFO  L181        SettingsManager]: Resetting IcfgToChc preferences to default values
[2020-10-14 01:12:52,668 INFO  L181        SettingsManager]: Resetting IcfgTransformer preferences to default values
[2020-10-14 01:12:52,672 INFO  L184        SettingsManager]: ReqToTest provides no preferences, ignoring...
[2020-10-14 01:12:52,672 INFO  L181        SettingsManager]: Resetting Boogie Printer preferences to default values
[2020-10-14 01:12:52,673 INFO  L181        SettingsManager]: Resetting ChcSmtPrinter preferences to default values
[2020-10-14 01:12:52,674 INFO  L181        SettingsManager]: Resetting ReqPrinter preferences to default values
[2020-10-14 01:12:52,678 INFO  L181        SettingsManager]: Resetting Witness Printer preferences to default values
[2020-10-14 01:12:52,679 INFO  L184        SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring...
[2020-10-14 01:12:52,679 INFO  L181        SettingsManager]: Resetting CDTParser preferences to default values
[2020-10-14 01:12:52,680 INFO  L184        SettingsManager]: AutomataScriptParser provides no preferences, ignoring...
[2020-10-14 01:12:52,680 INFO  L184        SettingsManager]: ReqParser provides no preferences, ignoring...
[2020-10-14 01:12:52,682 INFO  L181        SettingsManager]: Resetting SmtParser preferences to default values
[2020-10-14 01:12:52,683 INFO  L181        SettingsManager]: Resetting Witness Parser preferences to default values
[2020-10-14 01:12:52,684 INFO  L188        SettingsManager]: Finished resetting all preferences to default values...
[2020-10-14 01:12:52,686 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
[2020-10-14 01:12:52,728 INFO  L113        SettingsManager]: Loading preferences was successful
[2020-10-14 01:12:52,728 INFO  L115        SettingsManager]: Preferences different from defaults after loading the file:
[2020-10-14 01:12:52,730 INFO  L136        SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults:
[2020-10-14 01:12:52,731 INFO  L138        SettingsManager]:  * Create parallel compositions if possible=false
[2020-10-14 01:12:52,731 INFO  L138        SettingsManager]:  * Use SBE=true
[2020-10-14 01:12:52,731 INFO  L136        SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults:
[2020-10-14 01:12:52,731 INFO  L138        SettingsManager]:  * sizeof long=4
[2020-10-14 01:12:52,731 INFO  L138        SettingsManager]:  * Overapproximate operations on floating types=true
[2020-10-14 01:12:52,732 INFO  L138        SettingsManager]:  * sizeof POINTER=4
[2020-10-14 01:12:52,732 INFO  L138        SettingsManager]:  * Check division by zero=IGNORE
[2020-10-14 01:12:52,733 INFO  L138        SettingsManager]:  * Pointer to allocated memory at dereference=IGNORE
[2020-10-14 01:12:52,733 INFO  L138        SettingsManager]:  * If two pointers are subtracted or compared they have the same base address=IGNORE
[2020-10-14 01:12:52,734 INFO  L138        SettingsManager]:  * Check array bounds for arrays that are off heap=IGNORE
[2020-10-14 01:12:52,734 INFO  L138        SettingsManager]:  * sizeof long double=12
[2020-10-14 01:12:52,734 INFO  L138        SettingsManager]:  * Check if freed pointer was valid=false
[2020-10-14 01:12:52,734 INFO  L138        SettingsManager]:  * Use constant arrays=true
[2020-10-14 01:12:52,735 INFO  L138        SettingsManager]:  * Pointer base address is valid at dereference=IGNORE
[2020-10-14 01:12:52,735 INFO  L136        SettingsManager]: Preferences of RCFGBuilder differ from their defaults:
[2020-10-14 01:12:52,735 INFO  L138        SettingsManager]:  * Size of a code block=SequenceOfStatements
[2020-10-14 01:12:52,735 INFO  L138        SettingsManager]:  * To the following directory=./dump/
[2020-10-14 01:12:52,735 INFO  L138        SettingsManager]:  * SMT solver=External_DefaultMode
[2020-10-14 01:12:52,736 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000
[2020-10-14 01:12:52,736 INFO  L136        SettingsManager]: Preferences of TraceAbstraction differ from their defaults:
[2020-10-14 01:12:52,736 INFO  L138        SettingsManager]:  * Compute Interpolants along a Counterexample=FPandBP
[2020-10-14 01:12:52,737 INFO  L138        SettingsManager]:  * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles
[2020-10-14 01:12:52,737 INFO  L138        SettingsManager]:  * Trace refinement strategy=CAMEL
[2020-10-14 01:12:52,737 INFO  L138        SettingsManager]:  * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in
[2020-10-14 01:12:52,737 INFO  L138        SettingsManager]:  * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true
[2020-10-14 01:12:52,737 INFO  L138        SettingsManager]:  * Trace refinement exception blacklist=NONE
[2020-10-14 01:12:52,737 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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true;
[2020-10-14 01:12:53,039 INFO  L75    nceAwareModelManager]: Repository-Root is: /tmp
[2020-10-14 01:12:53,054 INFO  L258   ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized
[2020-10-14 01:12:53,060 INFO  L214   ainManager$Toolchain]: [Toolchain 1]: Toolchain selected.
[2020-10-14 01:12:53,062 INFO  L271        PluginConnector]: Initializing CDTParser...
[2020-10-14 01:12:53,063 INFO  L275        PluginConnector]: CDTParser initialized
[2020-10-14 01:12:53,063 INFO  L429   ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label03.c
[2020-10-14 01:12:53,129 INFO  L220              CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd7dd42fe/1ae6b02e65be4fc48063bbfca2ed9fbf/FLAG96b896a0b
[2020-10-14 01:12:54,053 INFO  L306              CDTParser]: Found 1 translation units.
[2020-10-14 01:12:54,054 INFO  L160              CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label03.c
[2020-10-14 01:12:54,118 INFO  L349              CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd7dd42fe/1ae6b02e65be4fc48063bbfca2ed9fbf/FLAG96b896a0b
[2020-10-14 01:12:54,555 INFO  L357              CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bd7dd42fe/1ae6b02e65be4fc48063bbfca2ed9fbf
[2020-10-14 01:12:54,564 INFO  L296   ainManager$Toolchain]: ####################### [Toolchain 1] #######################
[2020-10-14 01:12:54,565 INFO  L131        ToolchainWalker]: Walking toolchain with 4 elements.
[2020-10-14 01:12:54,567 INFO  L113        PluginConnector]: ------------------------CACSL2BoogieTranslator----------------------------
[2020-10-14 01:12:54,567 INFO  L271        PluginConnector]: Initializing CACSL2BoogieTranslator...
[2020-10-14 01:12:54,571 INFO  L275        PluginConnector]: CACSL2BoogieTranslator initialized
[2020-10-14 01:12:54,572 INFO  L185        PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:12:54" (1/1) ...
[2020-10-14 01:12:54,575 INFO  L205        PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39cd098f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:54, skipping insertion in model container
[2020-10-14 01:12:54,575 INFO  L185        PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 01:12:54" (1/1) ...
[2020-10-14 01:12:54,582 INFO  L145         MainTranslator]: Starting translation in SV-COMP mode 
[2020-10-14 01:12:54,823 INFO  L178         MainTranslator]: Built tables and reachable declarations
[2020-10-14 01:12:57,416 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:12:57,421 INFO  L203         MainTranslator]: Completed pre-run
[2020-10-14 01:12:58,452 INFO  L206          PostProcessor]: Analyzing one entry point: main
[2020-10-14 01:12:58,520 INFO  L208         MainTranslator]: Completed translation
[2020-10-14 01:12:58,521 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58 WrapperNode
[2020-10-14 01:12:58,521 INFO  L132        PluginConnector]: ------------------------ END CACSL2BoogieTranslator----------------------------
[2020-10-14 01:12:58,522 INFO  L113        PluginConnector]: ------------------------Boogie Preprocessor----------------------------
[2020-10-14 01:12:58,522 INFO  L271        PluginConnector]: Initializing Boogie Preprocessor...
[2020-10-14 01:12:58,522 INFO  L275        PluginConnector]: Boogie Preprocessor initialized
[2020-10-14 01:12:58,537 INFO  L185        PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:58,538 INFO  L185        PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:58,602 INFO  L185        PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:58,603 INFO  L185        PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:58,794 INFO  L185        PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:58,874 INFO  L185        PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:59,036 INFO  L185        PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (1/1) ...
[2020-10-14 01:12:59,077 INFO  L132        PluginConnector]: ------------------------ END Boogie Preprocessor----------------------------
[2020-10-14 01:12:59,078 INFO  L113        PluginConnector]: ------------------------RCFGBuilder----------------------------
[2020-10-14 01:12:59,078 INFO  L271        PluginConnector]: Initializing RCFGBuilder...
[2020-10-14 01:12:59,078 INFO  L275        PluginConnector]: RCFGBuilder initialized
[2020-10-14 01:12:59,080 INFO  L185        PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (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
[2020-10-14 01:12:59,145 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.init
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure ULTIMATE.start
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output2
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output3
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output4
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output5
[2020-10-14 01:12:59,146 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output6
[2020-10-14 01:12:59,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output7
[2020-10-14 01:12:59,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure calculate_output8
[2020-10-14 01:12:59,147 INFO  L138     BoogieDeclarations]: Found implementation of procedure main
[2020-10-14 01:12:59,147 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output
[2020-10-14 01:12:59,147 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output2
[2020-10-14 01:12:59,148 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output3
[2020-10-14 01:12:59,148 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output4
[2020-10-14 01:12:59,148 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output5
[2020-10-14 01:12:59,148 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output6
[2020-10-14 01:12:59,148 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output7
[2020-10-14 01:12:59,148 INFO  L130     BoogieDeclarations]: Found specification of procedure calculate_output8
[2020-10-14 01:12:59,153 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_error
[2020-10-14 01:12:59,154 INFO  L130     BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int
[2020-10-14 01:12:59,154 INFO  L130     BoogieDeclarations]: Found specification of procedure exit
[2020-10-14 01:12:59,154 INFO  L130     BoogieDeclarations]: Found specification of procedure main
[2020-10-14 01:12:59,154 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.init
[2020-10-14 01:12:59,156 INFO  L130     BoogieDeclarations]: Found specification of procedure ULTIMATE.start
[2020-10-14 01:13:07,165 INFO  L290             CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start)
[2020-10-14 01:13:07,165 INFO  L295             CfgBuilder]: Removed 1 assume(true) statements.
[2020-10-14 01:13:07,182 INFO  L202        PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:13:07 BoogieIcfgContainer
[2020-10-14 01:13:07,182 INFO  L132        PluginConnector]: ------------------------ END RCFGBuilder----------------------------
[2020-10-14 01:13:07,183 INFO  L113        PluginConnector]: ------------------------TraceAbstraction----------------------------
[2020-10-14 01:13:07,184 INFO  L271        PluginConnector]: Initializing TraceAbstraction...
[2020-10-14 01:13:07,187 INFO  L275        PluginConnector]: TraceAbstraction initialized
[2020-10-14 01:13:07,187 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 01:12:54" (1/3) ...
[2020-10-14 01:13:07,188 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d0485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:13:07, skipping insertion in model container
[2020-10-14 01:13:07,188 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 01:12:58" (2/3) ...
[2020-10-14 01:13:07,189 INFO  L205        PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f8d0485 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 01:13:07, skipping insertion in model container
[2020-10-14 01:13:07,189 INFO  L185        PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 01:13:07" (3/3) ...
[2020-10-14 01:13:07,191 INFO  L109   eAbstractionObserver]: Analyzing ICFG Problem05_label03.c
[2020-10-14 01:13:07,201 INFO  L157   ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION
[2020-10-14 01:13:07,211 INFO  L169   ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations.
[2020-10-14 01:13:07,225 INFO  L251      AbstractCegarLoop]: Starting to check reachability of 1 error locations.
[2020-10-14 01:13:07,256 INFO  L375      AbstractCegarLoop]: Interprodecural is true
[2020-10-14 01:13:07,256 INFO  L376      AbstractCegarLoop]: Hoare is true
[2020-10-14 01:13:07,256 INFO  L377      AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation
[2020-10-14 01:13:07,257 INFO  L378      AbstractCegarLoop]: Backedges is STRAIGHT_LINE
[2020-10-14 01:13:07,257 INFO  L379      AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION
[2020-10-14 01:13:07,257 INFO  L380      AbstractCegarLoop]: Difference is false
[2020-10-14 01:13:07,257 INFO  L381      AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA
[2020-10-14 01:13:07,257 INFO  L385      AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce========
[2020-10-14 01:13:07,306 INFO  L276                IsEmpty]: Start isEmpty. Operand 2222 states.
[2020-10-14 01:13:07,412 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1701
[2020-10-14 01:13:07,412 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:13:07,415 INFO  L422         BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:13:07,415 INFO  L427      AbstractCegarLoop]: === Iteration 1 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:13:07,421 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:13:07,423 INFO  L82        PathProgramCache]: Analyzing trace with hash -1425216007, now seen corresponding path program 1 times
[2020-10-14 01:13:07,432 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:13:07,433 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309887334]
[2020-10-14 01:13:07,434 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:13:08,549 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:09,285 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:13,787 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:13,787 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1722
[2020-10-14 01:13:13,787 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:13:13,788 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5229
[2020-10-14 01:13:13,790 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:13,790 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:13,790 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 20
[2020-10-14 01:13:13,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:13:13,791 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1716
[2020-10-14 01:13:13,791 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 3
[2020-10-14 01:13:15,314 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:13:15,318 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:15,321 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:15,328 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:15,328 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:13:15,328 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:13:15,329 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 8
[2020-10-14 01:13:15,329 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:15,329 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:15,329 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:13:15,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:13:15,330 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:13:15,330 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:13:18,079 INFO  L134       CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:13:18,080 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309887334]
[2020-10-14 01:13:18,082 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:13:18,082 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4
[2020-10-14 01:13:18,083 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145087137]
[2020-10-14 01:13:18,092 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 5 states
[2020-10-14 01:13:18,092 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:13:18,102 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants.
[2020-10-14 01:13:18,103 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20
[2020-10-14 01:13:18,105 INFO  L87              Difference]: Start difference. First operand 2222 states. Second operand 5 states.
[2020-10-14 01:13:44,499 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:13:44,499 INFO  L93              Difference]: Finished difference Result 8234 states and 15615 transitions.
[2020-10-14 01:13:44,500 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. 
[2020-10-14 01:13:44,502 INFO  L78                 Accepts]: Start accepts. Automaton has 5 states. Word has length 1700
[2020-10-14 01:13:44,510 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:13:44,571 INFO  L225             Difference]: With dead ends: 8234
[2020-10-14 01:13:44,572 INFO  L226             Difference]: Without dead ends: 5944
[2020-10-14 01:13:44,586 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:13:44,613 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 5944 states.
[2020-10-14 01:13:44,840 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 5944 to 5825.
[2020-10-14 01:13:44,841 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 5825 states.
[2020-10-14 01:13:44,868 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 5825 states to 5825 states and 10164 transitions.
[2020-10-14 01:13:44,870 INFO  L78                 Accepts]: Start accepts. Automaton has 5825 states and 10164 transitions. Word has length 1700
[2020-10-14 01:13:44,874 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:13:44,875 INFO  L479      AbstractCegarLoop]: Abstraction has 5825 states and 10164 transitions.
[2020-10-14 01:13:44,875 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 5 states.
[2020-10-14 01:13:44,875 INFO  L276                IsEmpty]: Start isEmpty. Operand 5825 states and 10164 transitions.
[2020-10-14 01:13:45,009 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1727
[2020-10-14 01:13:45,009 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:13:45,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:13:45,011 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0
[2020-10-14 01:13:45,012 INFO  L427      AbstractCegarLoop]: === Iteration 2 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:13:45,012 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:13:45,013 INFO  L82        PathProgramCache]: Analyzing trace with hash -903906540, now seen corresponding path program 1 times
[2020-10-14 01:13:45,013 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:13:45,014 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1510046688]
[2020-10-14 01:13:45,015 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:13:45,222 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:45,258 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:45,729 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:50,306 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:50,308 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1750
[2020-10-14 01:13:50,311 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:13:50,312 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5081
[2020-10-14 01:13:50,313 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:50,313 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:50,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:13:50,313 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:13:50,314 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 30
[2020-10-14 01:13:50,314 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:13:52,021 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:13:52,025 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:52,027 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:52,031 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:52,031 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:13:52,031 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:13:52,031 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5
[2020-10-14 01:13:52,032 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:52,032 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:52,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:13:52,032 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:13:52,033 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:13:52,033 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:13:52,055 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:13:52,062 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:13:52,067 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:13:52,101 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:13:52,101 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:13:52,102 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:13:52,102 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 38
[2020-10-14 01:13:52,102 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:13:52,102 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:13:52,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:13:52,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:13:52,103 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-14 01:13:52,103 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:13:53,242 INFO  L134       CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:13:53,243 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1510046688]
[2020-10-14 01:13:53,243 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:13:53,243 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:13:53,243 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378338432]
[2020-10-14 01:13:53,248 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:13:53,248 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:13:53,248 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:13:53,249 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:13:53,249 INFO  L87              Difference]: Start difference. First operand 5825 states and 10164 transitions. Second operand 7 states.
[2020-10-14 01:14:15,904 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:14:15,904 INFO  L93              Difference]: Finished difference Result 17215 states and 30555 transitions.
[2020-10-14 01:14:15,906 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. 
[2020-10-14 01:14:15,906 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1726
[2020-10-14 01:14:15,906 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:14:15,978 INFO  L225             Difference]: With dead ends: 17215
[2020-10-14 01:14:15,978 INFO  L226             Difference]: Without dead ends: 11396
[2020-10-14 01:14:15,999 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:14:16,014 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 11396 states.
[2020-10-14 01:14:16,266 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 11396 to 11255.
[2020-10-14 01:14:16,267 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 11255 states.
[2020-10-14 01:14:16,291 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 11255 states to 11255 states and 17691 transitions.
[2020-10-14 01:14:16,292 INFO  L78                 Accepts]: Start accepts. Automaton has 11255 states and 17691 transitions. Word has length 1726
[2020-10-14 01:14:16,292 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:14:16,292 INFO  L479      AbstractCegarLoop]: Abstraction has 11255 states and 17691 transitions.
[2020-10-14 01:14:16,293 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:14:16,293 INFO  L276                IsEmpty]: Start isEmpty. Operand 11255 states and 17691 transitions.
[2020-10-14 01:14:16,382 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1756
[2020-10-14 01:14:16,382 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:16,384 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:14:16,384 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1
[2020-10-14 01:14:16,384 INFO  L427      AbstractCegarLoop]: === Iteration 3 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:16,384 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:16,385 INFO  L82        PathProgramCache]: Analyzing trace with hash -266824202, now seen corresponding path program 1 times
[2020-10-14 01:14:16,385 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:16,386 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81182235]
[2020-10-14 01:14:16,386 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:16,520 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:16,561 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:16,903 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:21,746 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:21,747 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1779
[2020-10-14 01:14:21,747 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 2
[2020-10-14 01:14:21,748 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5222
[2020-10-14 01:14:21,748 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:21,748 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:21,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 6
[2020-10-14 01:14:21,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 5
[2020-10-14 01:14:21,749 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 61
[2020-10-14 01:14:21,749 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:22,184 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:22,189 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:22,191 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:22,201 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:22,201 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:22,202 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:22,202 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 11
[2020-10-14 01:14:22,203 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:22,203 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:22,203 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:22,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:22,204 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 2
[2020-10-14 01:14:22,204 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:22,234 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:14:22,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:22,272 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:22,392 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:22,392 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 56
[2020-10-14 01:14:22,393 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:22,393 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 132
[2020-10-14 01:14:22,393 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:22,393 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:22,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:14:22,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:14:22,394 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 56
[2020-10-14 01:14:22,394 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:23,799 INFO  L134       CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked.
[2020-10-14 01:14:23,799 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81182235]
[2020-10-14 01:14:23,799 INFO  L220   FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences.
[2020-10-14 01:14:23,800 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6
[2020-10-14 01:14:23,800 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810922016]
[2020-10-14 01:14:23,802 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:14:23,802 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:14:23,802 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:14:23,803 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:14:23,803 INFO  L87              Difference]: Start difference. First operand 11255 states and 17691 transitions. Second operand 7 states.
[2020-10-14 01:14:46,922 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:14:46,922 INFO  L93              Difference]: Finished difference Result 34369 states and 56530 transitions.
[2020-10-14 01:14:46,923 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:14:46,923 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1755
[2020-10-14 01:14:46,924 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:14:47,021 INFO  L225             Difference]: With dead ends: 34369
[2020-10-14 01:14:47,021 INFO  L226             Difference]: Without dead ends: 23120
[2020-10-14 01:14:47,059 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:14:47,087 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 23120 states.
[2020-10-14 01:14:47,617 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 23120 to 22506.
[2020-10-14 01:14:47,617 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 22506 states.
[2020-10-14 01:14:47,677 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 22506 states to 22506 states and 32856 transitions.
[2020-10-14 01:14:47,677 INFO  L78                 Accepts]: Start accepts. Automaton has 22506 states and 32856 transitions. Word has length 1755
[2020-10-14 01:14:47,678 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:14:47,678 INFO  L479      AbstractCegarLoop]: Abstraction has 22506 states and 32856 transitions.
[2020-10-14 01:14:47,679 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:14:47,679 INFO  L276                IsEmpty]: Start isEmpty. Operand 22506 states and 32856 transitions.
[2020-10-14 01:14:47,798 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1772
[2020-10-14 01:14:47,798 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:14:47,800 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:14:47,800 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2
[2020-10-14 01:14:47,800 INFO  L427      AbstractCegarLoop]: === Iteration 4 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:14:47,801 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:14:47,801 INFO  L82        PathProgramCache]: Analyzing trace with hash -1472857108, now seen corresponding path program 1 times
[2020-10-14 01:14:47,802 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:14:47,811 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [385721138]
[2020-10-14 01:14:47,812 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:14:47,950 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:47,982 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:48,108 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:48,451 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:50,004 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:53,044 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:53,044 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1797
[2020-10-14 01:14:53,044 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 4
[2020-10-14 01:14:53,045 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5090
[2020-10-14 01:14:53,045 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:53,045 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:53,045 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:14:53,045 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 50
[2020-10-14 01:14:53,046 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-14 01:14:53,046 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:14:53,350 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:14:53,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:53,353 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:53,357 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:53,357 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:14:53,357 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:53,357 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 4
[2020-10-14 01:14:53,358 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:53,358 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:53,358 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:14:53,358 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:53,358 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:14:53,358 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:14:53,377 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:14:53,386 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:53,394 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:53,422 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:53,423 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:14:53,423 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:53,423 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 35
[2020-10-14 01:14:53,423 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:53,424 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:53,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:14:53,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:14:53,424 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-14 01:14:53,424 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:14:53,435 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-14 01:14:53,442 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:14:53,447 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:14:53,500 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:14:53,501 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 32
[2020-10-14 01:14:53,501 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:14:53,501 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 57
[2020-10-14 01:14:53,502 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:14:53,502 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:14:53,502 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:14:53,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:14:53,503 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 32
[2020-10-14 01:14:53,503 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:14:55,192 INFO  L134       CoverageAnalysis]: Checked inductivity of 92 backedges. 89 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked.
[2020-10-14 01:14:55,192 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [385721138]
[2020-10-14 01:14:55,193 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:14:55,193 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:14:55,193 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027522042]
[2020-10-14 01:14:55,195 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:14:55,196 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:14:55,196 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:14:55,196 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:14:55,196 INFO  L87              Difference]: Start difference. First operand 22506 states and 32856 transitions. Second operand 7 states.
[2020-10-14 01:15:17,202 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:17,202 INFO  L93              Difference]: Finished difference Result 56088 states and 82414 transitions.
[2020-10-14 01:15:17,203 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. 
[2020-10-14 01:15:17,203 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1771
[2020-10-14 01:15:17,203 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:17,306 INFO  L225             Difference]: With dead ends: 56088
[2020-10-14 01:15:17,307 INFO  L226             Difference]: Without dead ends: 33588
[2020-10-14 01:15:17,357 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110
[2020-10-14 01:15:17,396 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 33588 states.
[2020-10-14 01:15:18,055 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 33588 to 33568.
[2020-10-14 01:15:18,055 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 33568 states.
[2020-10-14 01:15:18,129 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 33568 states to 33568 states and 44606 transitions.
[2020-10-14 01:15:18,130 INFO  L78                 Accepts]: Start accepts. Automaton has 33568 states and 44606 transitions. Word has length 1771
[2020-10-14 01:15:18,130 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:18,130 INFO  L479      AbstractCegarLoop]: Abstraction has 33568 states and 44606 transitions.
[2020-10-14 01:15:18,131 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:18,131 INFO  L276                IsEmpty]: Start isEmpty. Operand 33568 states and 44606 transitions.
[2020-10-14 01:15:18,230 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1815
[2020-10-14 01:15:18,231 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:18,232 INFO  L422         BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:15:18,232 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3
[2020-10-14 01:15:18,233 INFO  L427      AbstractCegarLoop]: === Iteration 5 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:18,233 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:18,233 INFO  L82        PathProgramCache]: Analyzing trace with hash 1798937858, now seen corresponding path program 1 times
[2020-10-14 01:15:18,234 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:18,234 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108012369]
[2020-10-14 01:15:18,234 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:18,352 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:18,383 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:18,489 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:18,814 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:23,581 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:23,582 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1842
[2020-10-14 01:15:23,582 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:15:23,582 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5225
[2020-10-14 01:15:23,583 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:23,583 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:23,583 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:23,584 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 100
[2020-10-14 01:15:23,584 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-14 01:15:23,584 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:24,183 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:15:24,186 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:24,188 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:24,190 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:24,192 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:15:24,192 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:24,192 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:15:24,193 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:24,193 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:24,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:15:24,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:24,195 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:15:24,195 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 2
[2020-10-14 01:15:24,220 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:15:24,224 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:24,226 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:24,239 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:24,240 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:15:24,240 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:24,240 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-14 01:15:24,241 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:24,241 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:24,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:15:24,241 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:24,242 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:15:24,242 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:24,252 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-14 01:15:24,263 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:24,272 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:24,307 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:24,307 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-14 01:15:24,307 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:24,308 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 43
[2020-10-14 01:15:24,308 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:24,308 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:24,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:15:24,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:24,309 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 43
[2020-10-14 01:15:24,309 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:24,324 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2020-10-14 01:15:24,330 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:24,335 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:24,364 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:24,364 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:15:24,364 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:24,365 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 33
[2020-10-14 01:15:24,365 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:24,365 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:24,365 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:24,365 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:15:24,366 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 27
[2020-10-14 01:15:24,366 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:25,819 INFO  L134       CoverageAnalysis]: Checked inductivity of 191 backedges. 150 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked.
[2020-10-14 01:15:25,819 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108012369]
[2020-10-14 01:15:25,819 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:15:25,820 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:15:25,820 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750696725]
[2020-10-14 01:15:25,823 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:15:25,823 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:25,823 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:15:25,824 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:15:25,824 INFO  L87              Difference]: Start difference. First operand 33568 states and 44606 transitions. Second operand 7 states.
[2020-10-14 01:15:48,582 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:15:48,582 INFO  L93              Difference]: Finished difference Result 78493 states and 108745 transitions.
[2020-10-14 01:15:48,583 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. 
[2020-10-14 01:15:48,584 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1814
[2020-10-14 01:15:48,584 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:15:48,731 INFO  L225             Difference]: With dead ends: 78493
[2020-10-14 01:15:48,732 INFO  L226             Difference]: Without dead ends: 44931
[2020-10-14 01:15:48,793 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:15:48,838 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 44931 states.
[2020-10-14 01:15:49,561 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 44931 to 44842.
[2020-10-14 01:15:49,561 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 44842 states.
[2020-10-14 01:15:49,658 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 44842 states to 44842 states and 61073 transitions.
[2020-10-14 01:15:49,660 INFO  L78                 Accepts]: Start accepts. Automaton has 44842 states and 61073 transitions. Word has length 1814
[2020-10-14 01:15:49,661 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:15:49,661 INFO  L479      AbstractCegarLoop]: Abstraction has 44842 states and 61073 transitions.
[2020-10-14 01:15:49,661 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:15:49,661 INFO  L276                IsEmpty]: Start isEmpty. Operand 44842 states and 61073 transitions.
[2020-10-14 01:15:49,768 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1853
[2020-10-14 01:15:49,768 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:15:49,769 INFO  L422         BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1]
[2020-10-14 01:15:49,769 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4
[2020-10-14 01:15:49,770 INFO  L427      AbstractCegarLoop]: === Iteration 6 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:15:49,770 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:15:49,771 INFO  L82        PathProgramCache]: Analyzing trace with hash -496681197, now seen corresponding path program 1 times
[2020-10-14 01:15:49,771 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:15:49,771 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2129277653]
[2020-10-14 01:15:49,771 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:15:49,860 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:49,889 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:49,967 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:50,161 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:51,388 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:54,813 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:54,979 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:54,979 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1882
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 5
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5115
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 50
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 51
[2020-10-14 01:15:54,980 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:55,248 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0
[2020-10-14 01:15:55,250 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:55,251 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:55,253 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:55,253 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 8
[2020-10-14 01:15:55,253 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:55,253 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 2
[2020-10-14 01:15:55,254 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:55,254 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:55,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:15:55,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:55,254 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:15:55,254 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:55,271 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8
[2020-10-14 01:15:55,278 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:55,285 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:55,307 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:55,307 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 41
[2020-10-14 01:15:55,307 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:55,307 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 27
[2020-10-14 01:15:55,307 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:55,308 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:55,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 2
[2020-10-14 01:15:55,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 1
[2020-10-14 01:15:55,308 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 35
[2020-10-14 01:15:55,308 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:55,315 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48
[2020-10-14 01:15:55,322 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:55,327 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:55,367 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:55,367 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 49
[2020-10-14 01:15:55,367 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:55,367 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 44
[2020-10-14 01:15:55,367 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:55,367 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:55,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:15:55,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 0
[2020-10-14 01:15:55,368 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 49
[2020-10-14 01:15:55,368 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:55,396 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96
[2020-10-14 01:15:55,400 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:55,403 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:55,411 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 27
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 10
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:15:55,412 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 24
[2020-10-14 01:15:55,413 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:15:55,413 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0
[2020-10-14 01:15:55,417 INFO  L375   atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122
[2020-10-14 01:15:55,422 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:15:55,425 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:15:55,437 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:15:55,437 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 39
[2020-10-14 01:15:55,437 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 1
[2020-10-14 01:15:55,437 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 14
[2020-10-14 01:15:55,438 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:15:55,438 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:15:55,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 1
[2020-10-14 01:15:55,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 36
[2020-10-14 01:15:55,438 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 1
[2020-10-14 01:15:55,439 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 1
[2020-10-14 01:15:56,846 INFO  L134       CoverageAnalysis]: Checked inductivity of 328 backedges. 183 proven. 58 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked.
[2020-10-14 01:15:56,846 INFO  L354   FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2129277653]
[2020-10-14 01:15:56,847 INFO  L220   FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences.
[2020-10-14 01:15:56,847 INFO  L233   FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7
[2020-10-14 01:15:56,847 INFO  L156   tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689172254]
[2020-10-14 01:15:56,849 INFO  L459      AbstractCegarLoop]: Interpolant automaton has 7 states
[2020-10-14 01:15:56,849 INFO  L143   FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES
[2020-10-14 01:15:56,849 INFO  L142   InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants.
[2020-10-14 01:15:56,850 INFO  L144   InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42
[2020-10-14 01:15:56,850 INFO  L87              Difference]: Start difference. First operand 44842 states and 61073 transitions. Second operand 7 states.
[2020-10-14 01:16:23,205 INFO  L144             Difference]: Subtrahend was deterministic. Have not used determinization.
[2020-10-14 01:16:23,206 INFO  L93              Difference]: Finished difference Result 105942 states and 149336 transitions.
[2020-10-14 01:16:23,207 INFO  L141   InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. 
[2020-10-14 01:16:23,207 INFO  L78                 Accepts]: Start accepts. Automaton has 7 states. Word has length 1852
[2020-10-14 01:16:23,208 INFO  L84                 Accepts]: Finished accepts. some prefix is accepted.
[2020-10-14 01:16:23,469 INFO  L225             Difference]: With dead ends: 105942
[2020-10-14 01:16:23,469 INFO  L226             Difference]: Without dead ends: 61106
[2020-10-14 01:16:23,540 INFO  L675         BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132
[2020-10-14 01:16:23,607 INFO  L82        GeneralOperation]: Start minimizeSevpa. Operand 61106 states.
[2020-10-14 01:16:24,773 INFO  L88        GeneralOperation]: Finished minimizeSevpa. Reduced states from 61106 to 60972.
[2020-10-14 01:16:24,774 INFO  L82        GeneralOperation]: Start removeUnreachable. Operand 60972 states.
[2020-10-14 01:16:24,937 INFO  L88        GeneralOperation]: Finished removeUnreachable. Reduced from 60972 states to 60972 states and 83761 transitions.
[2020-10-14 01:16:24,938 INFO  L78                 Accepts]: Start accepts. Automaton has 60972 states and 83761 transitions. Word has length 1852
[2020-10-14 01:16:24,939 INFO  L84                 Accepts]: Finished accepts. word is rejected.
[2020-10-14 01:16:24,939 INFO  L479      AbstractCegarLoop]: Abstraction has 60972 states and 83761 transitions.
[2020-10-14 01:16:24,939 INFO  L480      AbstractCegarLoop]: Interpolant automaton has 7 states.
[2020-10-14 01:16:24,939 INFO  L276                IsEmpty]: Start isEmpty. Operand 60972 states and 83761 transitions.
[2020-10-14 01:16:25,096 INFO  L282                IsEmpty]: Finished isEmpty. Found accepting run of length 1856
[2020-10-14 01:16:25,096 INFO  L414         BasicCegarLoop]: Found error trace
[2020-10-14 01:16:25,097 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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[2020-10-14 01:16:25,098 WARN  L516      AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5
[2020-10-14 01:16:25,098 INFO  L427      AbstractCegarLoop]: === Iteration 7 === [calculate_output8Err0ASSERT_VIOLATIONERROR_FUNCTION]===
[2020-10-14 01:16:25,098 INFO  L144       PredicateUnifier]: Initialized classic predicate unifier
[2020-10-14 01:16:25,099 INFO  L82        PathProgramCache]: Analyzing trace with hash -302020132, now seen corresponding path program 1 times
[2020-10-14 01:16:25,099 INFO  L163   FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES
[2020-10-14 01:16:25,099 INFO  L354   FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1826196143]
[2020-10-14 01:16:25,099 INFO  L95    rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY
[2020-10-14 01:16:25,259 INFO  L136    AnnotateAndAsserter]: Conjunction of SSA is unsat
[2020-10-14 01:16:25,333 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:25,966 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:26,424 FATAL L256   erpolLogProxyWrapper]: Now shrinking...
[2020-10-14 01:16:30,459 FATAL L256   erpolLogProxyWrapper]: Timeout: 5000
[2020-10-14 01:16:30,459 FATAL L256   erpolLogProxyWrapper]: Cardinality of Constraint set: 1881
[2020-10-14 01:16:30,459 FATAL L256   erpolLogProxyWrapper]: Number of enumerated Muses: 3
[2020-10-14 01:16:30,459 FATAL L256   erpolLogProxyWrapper]: Time needed for enumeration: 5194
[2020-10-14 01:16:30,459 FATAL L256   erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL
[2020-10-14 01:16:30,460 FATAL L256   erpolLogProxyWrapper]: Tolerance: 0.4
[2020-10-14 01:16:30,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has size: 4
[2020-10-14 01:16:30,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has depth: 120
[2020-10-14 01:16:30,460 FATAL L256   erpolLogProxyWrapper]: Chosen Mus has width: 48
[2020-10-14 01:16:30,460 FATAL L256   erpolLogProxyWrapper]: Time needed for Heuristics: 0