/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.6 --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 language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label59.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 10:53:54,999 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 10:53:55,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 10:53:55,052 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 10:53:55,053 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 10:53:55,054 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 10:53:55,056 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 10:53:55,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 10:53:55,061 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 10:53:55,062 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 10:53:55,063 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 10:53:55,065 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 10:53:55,065 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 10:53:55,067 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 10:53:55,068 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 10:53:55,069 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 10:53:55,070 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 10:53:55,072 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 10:53:55,074 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 10:53:55,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 10:53:55,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 10:53:55,097 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 10:53:55,100 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 10:53:55,101 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 10:53:55,110 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 10:53:55,111 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 10:53:55,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 10:53:55,114 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 10:53:55,116 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 10:53:55,117 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 10:53:55,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 10:53:55,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 10:53:55,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 10:53:55,121 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 10:53:55,123 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 10:53:55,123 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 10:53:55,124 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 10:53:55,124 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 10:53:55,124 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 10:53:55,126 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 10:53:55,127 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 10:53:55,129 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 [2020-10-28 10:53:55,179 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 10:53:55,180 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 10:53:55,183 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 10:53:55,183 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 10:53:55,184 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 10:53:55,184 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 10:53:55,184 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 10:53:55,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 10:53:55,184 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 10:53:55,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 10:53:55,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 10:53:55,186 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 10:53:55,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 10:53:55,187 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 10:53:55,187 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 10:53:55,187 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 10:53:55,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 10:53:55,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 10:53:55,188 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 10:53:55,188 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 10:53:55,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 10:53:55,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:53:55,189 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 10:53:55,189 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 10:53:55,189 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 10:53:55,189 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 10:53:55,189 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 10:53:55,190 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 10:53:55,191 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 10:53:55,191 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 10:53:55,583 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 10:53:55,612 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 10:53:55,615 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 10:53:55,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 10:53:55,618 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 10:53:55,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label59.c [2020-10-28 10:53:55,703 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8279089e3/3909ca7c1adb4d9b91d5f139608a269f/FLAG73cd7fdb8 [2020-10-28 10:53:56,948 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 10:53:56,949 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label59.c [2020-10-28 10:53:56,997 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8279089e3/3909ca7c1adb4d9b91d5f139608a269f/FLAG73cd7fdb8 [2020-10-28 10:53:57,262 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8279089e3/3909ca7c1adb4d9b91d5f139608a269f [2020-10-28 10:53:57,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 10:53:57,273 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 10:53:57,274 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 10:53:57,275 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 10:53:57,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 10:53:57,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:57" (1/1) ... [2020-10-28 10:53:57,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ea86f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:53:57, skipping insertion in model container [2020-10-28 10:53:57,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 10:53:57" (1/1) ... [2020-10-28 10:53:57,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 10:53:57,526 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 10:54:00,000 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:54:00,014 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 10:54:01,192 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 10:54:01,270 INFO L208 MainTranslator]: Completed translation [2020-10-28 10:54:01,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01 WrapperNode [2020-10-28 10:54:01,272 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 10:54:01,273 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 10:54:01,273 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 10:54:01,273 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 10:54:01,288 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,412 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,796 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,840 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... [2020-10-28 10:54:01,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 10:54:01,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 10:54:01,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 10:54:01,900 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 10:54:01,901 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 10:54:02,087 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 10:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 10:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 10:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 10:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 10:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 10:54:02,088 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 10:54:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-28 10:54:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-28 10:54:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-28 10:54:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-28 10:54:02,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 10:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 10:54:02,089 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-28 10:54:02,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 10:54:02,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 10:54:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 10:54:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 10:54:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 10:54:02,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 10:54:17,186 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 10:54:17,187 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 10:54:17,192 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:17 BoogieIcfgContainer [2020-10-28 10:54:17,192 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 10:54:17,194 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 10:54:17,194 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 10:54:17,198 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 10:54:17,198 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 10:53:57" (1/3) ... [2020-10-28 10:54:17,199 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63db1256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:17, skipping insertion in model container [2020-10-28 10:54:17,199 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 10:54:01" (2/3) ... [2020-10-28 10:54:17,200 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@63db1256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 10:54:17, skipping insertion in model container [2020-10-28 10:54:17,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 10:54:17" (3/3) ... [2020-10-28 10:54:17,202 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label59.c [2020-10-28 10:54:17,214 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 10:54:17,221 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 10:54:17,234 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 10:54:17,272 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 10:54:17,273 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 10:54:17,273 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 10:54:17,273 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 10:54:17,273 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 10:54:17,273 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 10:54:17,273 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 10:54:17,274 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 10:54:17,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-28 10:54:17,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1681 [2020-10-28 10:54:17,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:54:17,560 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, 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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] [2020-10-28 10:54:17,561 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:54:17,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:54:17,572 INFO L82 PathProgramCache]: Analyzing trace with hash 30444871, now seen corresponding path program 1 times [2020-10-28 10:54:17,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:54:17,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618841228] [2020-10-28 10:54:17,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:54:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:19,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:23,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:23,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1704 [2020-10-28 10:54:23,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:54:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5315 [2020-10-28 10:54:23,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:23,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 10:54:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:54:23,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1695 [2020-10-28 10:54:24,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 10:54:25,980 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:54:25,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:54:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:54:26,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:54:26,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:54:26,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:54:26,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:54:26,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 10:54:26,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:54:26,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:54:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:54:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:54:26,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:54:26,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:54:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:54:28,514 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618841228] [2020-10-28 10:54:28,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:54:28,517 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 10:54:28,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197169606] [2020-10-28 10:54:28,528 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 10:54:28,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:54:28,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 10:54:28,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 10:54:28,547 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-28 10:54:28,731 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:55:00,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:55:00,150 INFO L93 Difference]: Finished difference Result 6365 states and 11965 transitions. [2020-10-28 10:55:00,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 10:55:00,152 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1680 [2020-10-28 10:55:00,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:55:00,240 INFO L225 Difference]: With dead ends: 6365 [2020-10-28 10:55:00,240 INFO L226 Difference]: Without dead ends: 4075 [2020-10-28 10:55:00,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 10:55:00,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4075 states. [2020-10-28 10:55:00,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4075 to 3987. [2020-10-28 10:55:00,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3987 states. [2020-10-28 10:55:00,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 7373 transitions. [2020-10-28 10:55:00,499 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 7373 transitions. Word has length 1680 [2020-10-28 10:55:00,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:55:00,503 INFO L481 AbstractCegarLoop]: Abstraction has 3987 states and 7373 transitions. [2020-10-28 10:55:00,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 10:55:00,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 7373 transitions. [2020-10-28 10:55:00,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1691 [2020-10-28 10:55:00,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:55:00,612 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-28 10:55:00,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 10:55:00,613 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:55:00,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:55:00,614 INFO L82 PathProgramCache]: Analyzing trace with hash -440475833, now seen corresponding path program 1 times [2020-10-28 10:55:00,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:55:00,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95085000] [2020-10-28 10:55:00,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:55:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:00,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:02,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:05,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:05,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1716 [2020-10-28 10:55:05,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:55:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5067 [2020-10-28 10:55:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:05,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:55:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:55:05,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 10:55:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:55:07,052 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:55:07,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:55:07,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:07,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:07,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:07,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:55:07,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:07,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:55:07,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:07,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:07,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:55:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:55:07,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:55:07,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:07,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:55:07,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:07,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:07,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:07,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-10-28 10:55:07,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:07,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 10:55:07,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:07,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:55:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:55:07,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-28 10:55:07,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:55:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:55:08,411 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [95085000] [2020-10-28 10:55:08,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:55:08,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:55:08,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840528756] [2020-10-28 10:55:08,416 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:55:08,416 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:55:08,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:55:08,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:55:08,418 INFO L87 Difference]: Start difference. First operand 3987 states and 7373 transitions. Second operand 7 states. [2020-10-28 10:55:08,599 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-28 10:55:09,118 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-28 10:55:45,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:55:45,675 INFO L93 Difference]: Finished difference Result 11737 states and 21900 transitions. [2020-10-28 10:55:45,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 10:55:45,676 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1690 [2020-10-28 10:55:45,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:55:45,721 INFO L225 Difference]: With dead ends: 11737 [2020-10-28 10:55:45,721 INFO L226 Difference]: Without dead ends: 7756 [2020-10-28 10:55:45,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-28 10:55:45,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7756 states. [2020-10-28 10:55:45,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7756 to 7637. [2020-10-28 10:55:45,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7637 states. [2020-10-28 10:55:45,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7637 states to 7637 states and 12275 transitions. [2020-10-28 10:55:45,969 INFO L78 Accepts]: Start accepts. Automaton has 7637 states and 12275 transitions. Word has length 1690 [2020-10-28 10:55:45,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:55:45,970 INFO L481 AbstractCegarLoop]: Abstraction has 7637 states and 12275 transitions. [2020-10-28 10:55:45,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:55:45,970 INFO L276 IsEmpty]: Start isEmpty. Operand 7637 states and 12275 transitions. [2020-10-28 10:55:46,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1692 [2020-10-28 10:55:46,093 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:55:46,094 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 10:55:46,095 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 10:55:46,095 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:55:46,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:55:46,096 INFO L82 PathProgramCache]: Analyzing trace with hash -700665281, now seen corresponding path program 1 times [2020-10-28 10:55:46,096 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:55:46,097 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117228343] [2020-10-28 10:55:46,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:55:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:46,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:47,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:51,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:51,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1717 [2020-10-28 10:55:51,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:55:51,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5209 [2020-10-28 10:55:51,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:51,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:51,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:55:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:55:51,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-28 10:55:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:52,263 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:55:52,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:55:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:52,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:52,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:52,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:55:52,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:52,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-28 10:55:52,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:52,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:55:52,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:55:52,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:55:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:55:52,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:55:52,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:55:52,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:55:52,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:55:52,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-28 10:55:52,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:55:52,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-28 10:55:52,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:55:52,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:55:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:55:52,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:55:52,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 10:55:52,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 10:55:53,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:55:53,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117228343] [2020-10-28 10:55:53,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:55:53,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 10:55:53,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405536575] [2020-10-28 10:55:53,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 10:55:53,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:55:53,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 10:55:53,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 10:55:53,722 INFO L87 Difference]: Start difference. First operand 7637 states and 12275 transitions. Second operand 7 states. [2020-10-28 10:55:53,922 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-28 10:55:54,454 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 79 [2020-10-28 10:56:41,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 10:56:41,461 INFO L93 Difference]: Finished difference Result 23180 states and 38110 transitions. [2020-10-28 10:56:41,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 10:56:41,463 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1691 [2020-10-28 10:56:41,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 10:56:41,556 INFO L225 Difference]: With dead ends: 23180 [2020-10-28 10:56:41,556 INFO L226 Difference]: Without dead ends: 15549 [2020-10-28 10:56:41,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 10:56:41,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15549 states. [2020-10-28 10:56:42,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15549 to 15074. [2020-10-28 10:56:42,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15074 states. [2020-10-28 10:56:42,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15074 states to 15074 states and 21146 transitions. [2020-10-28 10:56:42,244 INFO L78 Accepts]: Start accepts. Automaton has 15074 states and 21146 transitions. Word has length 1691 [2020-10-28 10:56:42,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 10:56:42,244 INFO L481 AbstractCegarLoop]: Abstraction has 15074 states and 21146 transitions. [2020-10-28 10:56:42,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 10:56:42,245 INFO L276 IsEmpty]: Start isEmpty. Operand 15074 states and 21146 transitions. [2020-10-28 10:56:42,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1703 [2020-10-28 10:56:42,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 10:56:42,315 INFO L422 BasicCegarLoop]: trace histogram [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, 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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] [2020-10-28 10:56:42,315 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 10:56:42,315 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 10:56:42,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 10:56:42,316 INFO L82 PathProgramCache]: Analyzing trace with hash 161713608, now seen corresponding path program 1 times [2020-10-28 10:56:42,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 10:56:42,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [727057212] [2020-10-28 10:56:42,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 10:56:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:56:43,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:43,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:47,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1728 [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5120 [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 10:56:47,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 10:56:47,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 10:56:47,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:56:48,486 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 73 [2020-10-28 10:56:48,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 10:56:48,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:56:48,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:48,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:56:48,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 10:56:48,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:56:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 10:56:48,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:56:48,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:56:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 10:56:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 10:56:48,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 10:56:48,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 10:56:48,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 10:56:48,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 10:56:48,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 10:56:48,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 10:56:48,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-28 10:56:48,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 10:56:48,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-28 10:56:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 10:56:48,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 10:56:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 10:56:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 10:56:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-28 10:56:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 10:56:49,910 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 10:56:49,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [727057212] [2020-10-28 10:56:49,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 10:56:49,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-28 10:56:49,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515192650] [2020-10-28 10:56:49,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 10:56:49,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 10:56:49,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 10:56:49,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-28 10:56:49,914 INFO L87 Difference]: Start difference. First operand 15074 states and 21146 transitions. Second operand 8 states. [2020-10-28 10:56:50,126 WARN L193 SmtUtils]: Spent 169.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-28 10:56:50,600 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-10-28 10:56:52,812 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification that was a NOOP. DAG size: 79