/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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:45:37,171 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:45:37,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:45:37,237 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:45:37,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:45:37,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:45:37,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:45:37,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:45:37,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:45:37,264 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:45:37,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:45:37,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:45:37,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:45:37,271 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:45:37,273 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:45:37,287 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:45:37,288 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:45:37,290 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:45:37,292 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:45:37,294 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:45:37,296 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:45:37,297 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:45:37,298 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:45:37,300 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:45:37,308 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:45:37,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:45:37,323 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:45:37,323 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:45:37,329 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:45:37,382 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:45:37,383 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:45:37,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:45:37,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:45:37,387 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:45:37,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:45:37,388 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:45:37,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:45:37,388 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:45:37,389 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:45:37,390 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:45:37,390 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:45:37,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:45:37,391 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:45:37,391 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:45:37,391 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:45:37,391 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:45:37,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:45:37,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:45:37,392 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:45:37,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:45:37,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:45:37,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:45:37,393 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:45:37,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:45:37,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:45:37,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:45:37,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:45:37,395 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:45:37,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:45:37,860 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:45:37,863 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:45:37,865 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:45:37,866 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:45:37,867 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-21 16:45:37,952 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f975a71/b31812850edb47f98583d650e7b226cc/FLAG78684cc93 [2021-02-21 16:45:38,806 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:45:38,807 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-21 16:45:38,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f975a71/b31812850edb47f98583d650e7b226cc/FLAG78684cc93 [2021-02-21 16:45:38,913 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/96f975a71/b31812850edb47f98583d650e7b226cc [2021-02-21 16:45:38,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:45:38,927 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:45:38,929 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:45:38,930 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:45:38,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:45:38,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:45:38" (1/1) ... [2021-02-21 16:45:38,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a00bcd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:38, skipping insertion in model container [2021-02-21 16:45:38,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:45:38" (1/1) ... [2021-02-21 16:45:38,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:45:39,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:45:39,917 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34600,34613] [2021-02-21 16:45:39,947 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35490,35503] [2021-02-21 16:45:39,982 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37320,37333] [2021-02-21 16:45:40,014 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38594,38607] [2021-02-21 16:45:40,171 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53307,53320] [2021-02-21 16:45:40,297 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62593,62606] [2021-02-21 16:45:40,317 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63486,63499] [2021-02-21 16:45:40,350 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[65319,65332] [2021-02-21 16:45:40,371 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[66212,66225] [2021-02-21 16:45:40,409 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[68985,68998] [2021-02-21 16:45:40,430 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[69878,69891] [2021-02-21 16:45:40,465 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[71711,71724] [2021-02-21 16:45:40,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:45:40,573 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:45:41,035 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[34600,34613] [2021-02-21 16:45:41,055 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[35490,35503] [2021-02-21 16:45:41,089 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[37320,37333] [2021-02-21 16:45:41,124 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[38594,38607] [2021-02-21 16:45:41,281 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[53307,53320] [2021-02-21 16:45:41,408 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[62593,62606] [2021-02-21 16:45:41,428 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[63486,63499] [2021-02-21 16:45:41,457 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[65319,65332] [2021-02-21 16:45:41,475 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[66212,66225] [2021-02-21 16:45:41,513 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[68985,68998] [2021-02-21 16:45:41,531 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[69878,69891] [2021-02-21 16:45:41,557 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/seq-mthreaded-reduced/pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[71711,71724] [2021-02-21 16:45:41,619 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:45:41,647 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:45:41,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41 WrapperNode [2021-02-21 16:45:41,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:45:41,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:45:41,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:45:41,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:45:41,664 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,664 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,732 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,732 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,846 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,892 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... [2021-02-21 16:45:41,941 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:45:41,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:45:41,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:45:41,944 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:45:41,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2021-02-21 16:45:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:45:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:45:42,057 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:45:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-21 16:45:42,058 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:45:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:45:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:45:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:45:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:45:42,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2021-02-21 16:45:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2021-02-21 16:45:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-21 16:45:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2021-02-21 16:45:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-21 16:45:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure read [2021-02-21 16:45:42,059 INFO L130 BoogieDeclarations]: Found specification of procedure write [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure init [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure check [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:45:42,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:45:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:45:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:45:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:45:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:45:42,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:45:45,308 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:45:45,308 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:45:45,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:45:45 BoogieIcfgContainer [2021-02-21 16:45:45,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:45:45,314 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:45:45,314 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:45:45,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:45:45,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:45:38" (1/3) ... [2021-02-21 16:45:45,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e603791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:45:45, skipping insertion in model container [2021-02-21 16:45:45,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:45:41" (2/3) ... [2021-02-21 16:45:45,320 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e603791 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:45:45, skipping insertion in model container [2021-02-21 16:45:45,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:45:45" (3/3) ... [2021-02-21 16:45:45,321 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.3.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-02-21 16:45:45,329 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:45:45,335 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 12 error locations. [2021-02-21 16:45:45,355 INFO L253 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-02-21 16:45:45,390 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:45:45,390 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:45:45,390 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:45:45,390 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:45:45,390 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:45:45,390 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:45:45,391 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:45:45,391 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:45:45,429 INFO L276 IsEmpty]: Start isEmpty. Operand 1016 states. [2021-02-21 16:45:45,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-02-21 16:45:45,463 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:45:45,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:45:45,465 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:45:45,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:45:45,473 INFO L82 PathProgramCache]: Analyzing trace with hash 1620258235, now seen corresponding path program 1 times [2021-02-21 16:45:45,483 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:45:45,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [309429207] [2021-02-21 16:45:45,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:45:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:45:46,473 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:46,474 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:45:46,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:46,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:45:46,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:46,491 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:45:47,165 WARN L202 SmtUtils]: Spent 651.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:45:47,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:45:47,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:45:47,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:47,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:45:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:45:47,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [309429207] [2021-02-21 16:45:47,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:45:47,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:45:47,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301007173] [2021-02-21 16:45:47,468 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:45:47,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:45:47,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:45:47,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:45:47,490 INFO L87 Difference]: Start difference. First operand 1016 states. Second operand 4 states. [2021-02-21 16:45:48,347 WARN L202 SmtUtils]: Spent 770.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-21 16:45:56,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:45:56,689 INFO L93 Difference]: Finished difference Result 1776 states and 3147 transitions. [2021-02-21 16:45:56,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:45:56,691 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2021-02-21 16:45:56,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:45:56,755 INFO L225 Difference]: With dead ends: 1776 [2021-02-21 16:45:56,756 INFO L226 Difference]: Without dead ends: 1481 [2021-02-21 16:45:56,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:45:56,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1481 states. [2021-02-21 16:45:56,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1481 to 1479. [2021-02-21 16:45:56,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1479 states. [2021-02-21 16:45:56,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1479 states to 1479 states and 2266 transitions. [2021-02-21 16:45:56,958 INFO L78 Accepts]: Start accepts. Automaton has 1479 states and 2266 transitions. Word has length 324 [2021-02-21 16:45:56,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:45:56,965 INFO L480 AbstractCegarLoop]: Abstraction has 1479 states and 2266 transitions. [2021-02-21 16:45:56,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:45:56,966 INFO L276 IsEmpty]: Start isEmpty. Operand 1479 states and 2266 transitions. [2021-02-21 16:45:56,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-02-21 16:45:56,981 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:45:56,982 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:45:56,982 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:45:56,984 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:45:56,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:45:56,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1579073754, now seen corresponding path program 1 times [2021-02-21 16:45:56,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:45:56,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [33680730] [2021-02-21 16:45:56,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:45:57,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:45:57,464 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:57,464 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:45:57,465 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:57,466 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:45:57,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:57,470 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:45:58,521 WARN L202 SmtUtils]: Spent 992.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:45:58,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:45:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:45:58,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:45:58,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:45:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:45:58,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [33680730] [2021-02-21 16:45:58,736 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:45:58,736 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:45:58,736 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649925595] [2021-02-21 16:45:58,738 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:45:58,739 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:45:58,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:45:58,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:45:58,740 INFO L87 Difference]: Start difference. First operand 1479 states and 2266 transitions. Second operand 4 states. [2021-02-21 16:45:59,574 WARN L202 SmtUtils]: Spent 780.00 ms on a formula simplification that was a NOOP. DAG size: 353 [2021-02-21 16:46:06,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:46:06,561 INFO L93 Difference]: Finished difference Result 2852 states and 4423 transitions. [2021-02-21 16:46:06,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:46:06,564 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 324 [2021-02-21 16:46:06,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:46:06,582 INFO L225 Difference]: With dead ends: 2852 [2021-02-21 16:46:06,582 INFO L226 Difference]: Without dead ends: 2439 [2021-02-21 16:46:06,586 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:46:06,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2439 states. [2021-02-21 16:46:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2439 to 2437. [2021-02-21 16:46:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2021-02-21 16:46:06,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3757 transitions. [2021-02-21 16:46:06,689 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3757 transitions. Word has length 324 [2021-02-21 16:46:06,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:46:06,690 INFO L480 AbstractCegarLoop]: Abstraction has 2437 states and 3757 transitions. [2021-02-21 16:46:06,690 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:46:06,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3757 transitions. [2021-02-21 16:46:06,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 325 [2021-02-21 16:46:06,700 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:46:06,701 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:46:06,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:46:06,701 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:46:06,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:46:06,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1220618986, now seen corresponding path program 1 times [2021-02-21 16:46:06,703 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:46:06,704 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344871514] [2021-02-21 16:46:06,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:46:07,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:07,378 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:07,378 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:07,379 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:07,380 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:46:07,391 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:07,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:46:07,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:07,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:08,217 WARN L202 SmtUtils]: Spent 786.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:46:08,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:46:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:08,244 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:08,244 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:08,452 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:46:08,453 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344871514] [2021-02-21 16:46:08,453 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:46:08,453 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:46:08,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221315474] [2021-02-21 16:46:08,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:46:08,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:46:08,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:46:08,457 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:46:08,459 INFO L87 Difference]: Start difference. First operand 2437 states and 3757 transitions. Second operand 5 states. [2021-02-21 16:46:18,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:46:18,788 INFO L93 Difference]: Finished difference Result 7199 states and 11086 transitions. [2021-02-21 16:46:18,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:46:18,789 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 324 [2021-02-21 16:46:18,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:46:18,814 INFO L225 Difference]: With dead ends: 7199 [2021-02-21 16:46:18,814 INFO L226 Difference]: Without dead ends: 4777 [2021-02-21 16:46:18,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:46:18,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4777 states. [2021-02-21 16:46:18,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4777 to 4653. [2021-02-21 16:46:18,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4653 states. [2021-02-21 16:46:19,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4653 states to 4653 states and 7163 transitions. [2021-02-21 16:46:19,008 INFO L78 Accepts]: Start accepts. Automaton has 4653 states and 7163 transitions. Word has length 324 [2021-02-21 16:46:19,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:46:19,009 INFO L480 AbstractCegarLoop]: Abstraction has 4653 states and 7163 transitions. [2021-02-21 16:46:19,009 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:46:19,009 INFO L276 IsEmpty]: Start isEmpty. Operand 4653 states and 7163 transitions. [2021-02-21 16:46:19,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-02-21 16:46:19,021 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:46:19,021 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:46:19,022 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:46:19,022 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:46:19,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:46:19,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1482063106, now seen corresponding path program 1 times [2021-02-21 16:46:19,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:46:19,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694688335] [2021-02-21 16:46:19,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:46:19,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:19,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:19,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:19,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:19,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:46:19,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:19,194 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:20,194 WARN L202 SmtUtils]: Spent 921.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:46:20,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:46:20,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:20,217 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:20,218 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:46:20,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694688335] [2021-02-21 16:46:20,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:46:20,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:46:20,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [590106906] [2021-02-21 16:46:20,407 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:46:20,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:46:20,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:46:20,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:46:20,408 INFO L87 Difference]: Start difference. First operand 4653 states and 7163 transitions. Second operand 4 states. [2021-02-21 16:46:31,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:46:31,880 INFO L93 Difference]: Finished difference Result 13649 states and 20959 transitions. [2021-02-21 16:46:31,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:46:31,881 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2021-02-21 16:46:31,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:46:31,926 INFO L225 Difference]: With dead ends: 13649 [2021-02-21 16:46:31,926 INFO L226 Difference]: Without dead ends: 9125 [2021-02-21 16:46:31,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:46:31,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9125 states. [2021-02-21 16:46:32,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9125 to 9001. [2021-02-21 16:46:32,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9001 states. [2021-02-21 16:46:32,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9001 states to 9001 states and 13804 transitions. [2021-02-21 16:46:32,324 INFO L78 Accepts]: Start accepts. Automaton has 9001 states and 13804 transitions. Word has length 326 [2021-02-21 16:46:32,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:46:32,327 INFO L480 AbstractCegarLoop]: Abstraction has 9001 states and 13804 transitions. [2021-02-21 16:46:32,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:46:32,327 INFO L276 IsEmpty]: Start isEmpty. Operand 9001 states and 13804 transitions. [2021-02-21 16:46:32,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2021-02-21 16:46:32,350 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:46:32,350 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:46:32,350 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 16:46:32,350 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:46:32,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:46:32,351 INFO L82 PathProgramCache]: Analyzing trace with hash 750767747, now seen corresponding path program 1 times [2021-02-21 16:46:32,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:46:32,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168032080] [2021-02-21 16:46:32,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:46:32,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:32,474 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:32,475 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:32,476 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:32,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:46:32,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:32,481 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:33,330 WARN L202 SmtUtils]: Spent 831.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:46:33,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:46:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:33,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:33,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:33,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:46:33,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168032080] [2021-02-21 16:46:33,527 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:46:33,527 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:46:33,527 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959924561] [2021-02-21 16:46:33,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:46:33,528 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:46:33,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:46:33,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:46:33,540 INFO L87 Difference]: Start difference. First operand 9001 states and 13804 transitions. Second operand 4 states. [2021-02-21 16:46:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:46:45,710 INFO L93 Difference]: Finished difference Result 26928 states and 41288 transitions. [2021-02-21 16:46:45,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:46:45,711 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 326 [2021-02-21 16:46:45,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:46:45,778 INFO L225 Difference]: With dead ends: 26928 [2021-02-21 16:46:45,779 INFO L226 Difference]: Without dead ends: 17969 [2021-02-21 16:46:45,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:46:45,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17969 states. [2021-02-21 16:46:46,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17969 to 9020. [2021-02-21 16:46:46,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9020 states. [2021-02-21 16:46:46,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9020 states to 9020 states and 13832 transitions. [2021-02-21 16:46:46,307 INFO L78 Accepts]: Start accepts. Automaton has 9020 states and 13832 transitions. Word has length 326 [2021-02-21 16:46:46,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:46:46,307 INFO L480 AbstractCegarLoop]: Abstraction has 9020 states and 13832 transitions. [2021-02-21 16:46:46,307 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:46:46,307 INFO L276 IsEmpty]: Start isEmpty. Operand 9020 states and 13832 transitions. [2021-02-21 16:46:46,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2021-02-21 16:46:46,327 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:46:46,327 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:46:46,328 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 16:46:46,328 INFO L428 AbstractCegarLoop]: === Iteration 6 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:46:46,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:46:46,329 INFO L82 PathProgramCache]: Analyzing trace with hash 2002303902, now seen corresponding path program 1 times [2021-02-21 16:46:46,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:46:46,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520881793] [2021-02-21 16:46:46,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:46:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:46,483 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:46,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:46,485 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:46,485 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:46:46,491 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:46,492 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:47,421 WARN L202 SmtUtils]: Spent 914.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:46:47,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:46:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:46:47,444 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:46:47,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:46:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:46:47,565 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520881793] [2021-02-21 16:46:47,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:46:47,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:46:47,566 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996154319] [2021-02-21 16:46:47,566 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:46:47,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:46:47,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:46:47,567 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:46:47,567 INFO L87 Difference]: Start difference. First operand 9020 states and 13832 transitions. Second operand 4 states. [2021-02-21 16:47:00,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:47:00,017 INFO L93 Difference]: Finished difference Result 26947 states and 41309 transitions. [2021-02-21 16:47:00,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:47:00,018 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 327 [2021-02-21 16:47:00,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:47:00,061 INFO L225 Difference]: With dead ends: 26947 [2021-02-21 16:47:00,061 INFO L226 Difference]: Without dead ends: 17987 [2021-02-21 16:47:00,082 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:47:00,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17987 states. [2021-02-21 16:47:00,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17987 to 9038. [2021-02-21 16:47:00,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9038 states. [2021-02-21 16:47:00,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9038 states to 9038 states and 13853 transitions. [2021-02-21 16:47:00,715 INFO L78 Accepts]: Start accepts. Automaton has 9038 states and 13853 transitions. Word has length 327 [2021-02-21 16:47:00,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:47:00,716 INFO L480 AbstractCegarLoop]: Abstraction has 9038 states and 13853 transitions. [2021-02-21 16:47:00,716 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:47:00,716 INFO L276 IsEmpty]: Start isEmpty. Operand 9038 states and 13853 transitions. [2021-02-21 16:47:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-02-21 16:47:00,733 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:47:00,734 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:47:00,734 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-02-21 16:47:00,734 INFO L428 AbstractCegarLoop]: === Iteration 7 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:47:00,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:47:00,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1989926489, now seen corresponding path program 1 times [2021-02-21 16:47:00,735 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:47:00,735 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064341919] [2021-02-21 16:47:00,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:47:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:00,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:00,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:00,910 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:00,911 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:47:00,920 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:00,921 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:01,769 WARN L202 SmtUtils]: Spent 825.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:47:01,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:47:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:01,797 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:01,798 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:01,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:47:01,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064341919] [2021-02-21 16:47:01,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:47:01,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:47:01,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167035700] [2021-02-21 16:47:01,953 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:47:01,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:47:01,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:47:01,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:47:01,955 INFO L87 Difference]: Start difference. First operand 9038 states and 13853 transitions. Second operand 4 states. [2021-02-21 16:47:14,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:47:14,381 INFO L93 Difference]: Finished difference Result 25493 states and 38963 transitions. [2021-02-21 16:47:14,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:47:14,382 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 328 [2021-02-21 16:47:14,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:47:14,419 INFO L225 Difference]: With dead ends: 25493 [2021-02-21 16:47:14,420 INFO L226 Difference]: Without dead ends: 16700 [2021-02-21 16:47:14,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:47:14,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16700 states. [2021-02-21 16:47:15,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16700 to 16576. [2021-02-21 16:47:15,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16576 states. [2021-02-21 16:47:15,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16576 states to 16576 states and 25242 transitions. [2021-02-21 16:47:15,283 INFO L78 Accepts]: Start accepts. Automaton has 16576 states and 25242 transitions. Word has length 328 [2021-02-21 16:47:15,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:47:15,283 INFO L480 AbstractCegarLoop]: Abstraction has 16576 states and 25242 transitions. [2021-02-21 16:47:15,284 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:47:15,284 INFO L276 IsEmpty]: Start isEmpty. Operand 16576 states and 25242 transitions. [2021-02-21 16:47:15,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 329 [2021-02-21 16:47:15,315 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:47:15,315 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:47:15,316 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-02-21 16:47:15,316 INFO L428 AbstractCegarLoop]: === Iteration 8 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:47:15,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:47:15,317 INFO L82 PathProgramCache]: Analyzing trace with hash -499020490, now seen corresponding path program 1 times [2021-02-21 16:47:15,317 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:47:15,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16246920] [2021-02-21 16:47:15,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:47:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:15,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:15,769 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:15,771 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:15,771 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:47:15,784 WARN L141 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size [2021-02-21 16:47:15,786 WARN L147 QuantifierPusher]: treesize reduction 6, result has 87.0 percent of original size 40 [2021-02-21 16:47:15,811 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:15,812 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:47:15,827 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:15,828 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:16,757 WARN L202 SmtUtils]: Spent 898.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:47:16,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:47:16,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:16,781 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:16,782 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:16,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:47:16,935 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16246920] [2021-02-21 16:47:16,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:47:16,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:47:16,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145166175] [2021-02-21 16:47:16,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:47:16,936 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:47:16,936 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:47:16,937 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:47:16,937 INFO L87 Difference]: Start difference. First operand 16576 states and 25242 transitions. Second operand 6 states. [2021-02-21 16:47:28,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:47:28,535 INFO L93 Difference]: Finished difference Result 48757 states and 74097 transitions. [2021-02-21 16:47:28,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:47:28,536 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 328 [2021-02-21 16:47:28,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:47:28,610 INFO L225 Difference]: With dead ends: 48757 [2021-02-21 16:47:28,610 INFO L226 Difference]: Without dead ends: 32240 [2021-02-21 16:47:28,644 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:47:28,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32240 states. [2021-02-21 16:47:30,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32240 to 32130. [2021-02-21 16:47:30,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32130 states. [2021-02-21 16:47:30,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32130 states to 32130 states and 48554 transitions. [2021-02-21 16:47:30,263 INFO L78 Accepts]: Start accepts. Automaton has 32130 states and 48554 transitions. Word has length 328 [2021-02-21 16:47:30,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:47:30,263 INFO L480 AbstractCegarLoop]: Abstraction has 32130 states and 48554 transitions. [2021-02-21 16:47:30,263 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:47:30,264 INFO L276 IsEmpty]: Start isEmpty. Operand 32130 states and 48554 transitions. [2021-02-21 16:47:30,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-02-21 16:47:30,312 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:47:30,313 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:47:30,313 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-02-21 16:47:30,313 INFO L428 AbstractCegarLoop]: === Iteration 9 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:47:30,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:47:30,314 INFO L82 PathProgramCache]: Analyzing trace with hash 261293675, now seen corresponding path program 1 times [2021-02-21 16:47:30,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:47:30,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [611229328] [2021-02-21 16:47:30,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:47:30,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:30,656 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:30,657 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:30,658 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:30,659 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:47:30,665 WARN L141 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-02-21 16:47:30,666 WARN L147 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size 30 [2021-02-21 16:47:30,685 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:30,687 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:47:30,703 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:30,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:31,696 WARN L202 SmtUtils]: Spent 963.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:47:31,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:47:31,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:31,719 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:31,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:31,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:47:31,913 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [611229328] [2021-02-21 16:47:31,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:47:31,914 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-21 16:47:31,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476937609] [2021-02-21 16:47:31,915 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-21 16:47:31,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:47:31,916 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-21 16:47:31,916 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:47:31,916 INFO L87 Difference]: Start difference. First operand 32130 states and 48554 transitions. Second operand 6 states. [2021-02-21 16:47:44,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:47:44,858 INFO L93 Difference]: Finished difference Result 94785 states and 142991 transitions. [2021-02-21 16:47:44,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:47:44,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 330 [2021-02-21 16:47:44,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:47:44,992 INFO L225 Difference]: With dead ends: 94785 [2021-02-21 16:47:44,992 INFO L226 Difference]: Without dead ends: 62776 [2021-02-21 16:47:45,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:47:45,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62776 states. [2021-02-21 16:47:48,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62776 to 62702. [2021-02-21 16:47:48,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62702 states. [2021-02-21 16:47:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62702 states to 62702 states and 94047 transitions. [2021-02-21 16:47:48,387 INFO L78 Accepts]: Start accepts. Automaton has 62702 states and 94047 transitions. Word has length 330 [2021-02-21 16:47:48,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:47:48,387 INFO L480 AbstractCegarLoop]: Abstraction has 62702 states and 94047 transitions. [2021-02-21 16:47:48,388 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-21 16:47:48,388 INFO L276 IsEmpty]: Start isEmpty. Operand 62702 states and 94047 transitions. [2021-02-21 16:47:48,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2021-02-21 16:47:48,452 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:47:48,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:47:48,453 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-02-21 16:47:48,453 INFO L428 AbstractCegarLoop]: === Iteration 10 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:47:48,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:47:48,456 INFO L82 PathProgramCache]: Analyzing trace with hash -1395183316, now seen corresponding path program 1 times [2021-02-21 16:47:48,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:47:48,456 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494923363] [2021-02-21 16:47:48,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:47:48,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:48,991 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:48,993 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:48,993 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:48,994 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:47:48,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:49,001 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-02-21 16:47:49,013 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:49,014 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:49,917 WARN L202 SmtUtils]: Spent 878.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:47:49,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:47:49,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:47:49,955 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:47:49,956 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:47:50,194 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:47:50,195 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494923363] [2021-02-21 16:47:50,195 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:47:50,196 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:47:50,196 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1453928861] [2021-02-21 16:47:50,197 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:47:50,197 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:47:50,197 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:47:50,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:47:50,198 INFO L87 Difference]: Start difference. First operand 62702 states and 94047 transitions. Second operand 5 states. [2021-02-21 16:48:06,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:48:06,167 INFO L93 Difference]: Finished difference Result 185248 states and 277402 transitions. [2021-02-21 16:48:06,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:48:06,168 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 330 [2021-02-21 16:48:06,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:48:06,376 INFO L225 Difference]: With dead ends: 185248 [2021-02-21 16:48:06,377 INFO L226 Difference]: Without dead ends: 122780 [2021-02-21 16:48:06,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:48:06,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122780 states. [2021-02-21 16:48:12,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122780 to 122586. [2021-02-21 16:48:12,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122586 states. [2021-02-21 16:48:12,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122586 states to 122586 states and 182575 transitions. [2021-02-21 16:48:12,515 INFO L78 Accepts]: Start accepts. Automaton has 122586 states and 182575 transitions. Word has length 330 [2021-02-21 16:48:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:48:12,516 INFO L480 AbstractCegarLoop]: Abstraction has 122586 states and 182575 transitions. [2021-02-21 16:48:12,516 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:48:12,516 INFO L276 IsEmpty]: Start isEmpty. Operand 122586 states and 182575 transitions. [2021-02-21 16:48:12,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-02-21 16:48:12,646 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:48:12,647 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:48:12,647 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-02-21 16:48:12,647 INFO L428 AbstractCegarLoop]: === Iteration 11 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:48:12,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:48:12,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1643496311, now seen corresponding path program 1 times [2021-02-21 16:48:12,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:48:12,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127979950] [2021-02-21 16:48:12,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:48:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:48:13,127 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:13,128 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:13,130 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:13,131 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 16:48:13,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:13,135 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:14,080 WARN L202 SmtUtils]: Spent 931.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:48:14,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:48:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:48:14,100 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:14,101 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:14,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:48:14,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127979950] [2021-02-21 16:48:14,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:48:14,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:48:14,277 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660260415] [2021-02-21 16:48:14,278 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:48:14,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:48:14,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:48:14,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:48:14,279 INFO L87 Difference]: Start difference. First operand 122586 states and 182575 transitions. Second operand 4 states. [2021-02-21 16:48:36,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:48:36,619 INFO L93 Difference]: Finished difference Result 361454 states and 537197 transitions. [2021-02-21 16:48:36,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:48:36,620 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2021-02-21 16:48:36,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:48:37,198 INFO L225 Difference]: With dead ends: 361454 [2021-02-21 16:48:37,198 INFO L226 Difference]: Without dead ends: 240252 [2021-02-21 16:48:37,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:48:37,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240252 states. [2021-02-21 16:48:48,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240252 to 240058. [2021-02-21 16:48:48,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240058 states. [2021-02-21 16:48:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240058 states to 240058 states and 354997 transitions. [2021-02-21 16:48:49,369 INFO L78 Accepts]: Start accepts. Automaton has 240058 states and 354997 transitions. Word has length 332 [2021-02-21 16:48:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:48:49,370 INFO L480 AbstractCegarLoop]: Abstraction has 240058 states and 354997 transitions. [2021-02-21 16:48:49,370 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:48:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 240058 states and 354997 transitions. [2021-02-21 16:48:49,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 333 [2021-02-21 16:48:49,984 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:48:49,984 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:48:49,984 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-02-21 16:48:49,984 INFO L428 AbstractCegarLoop]: === Iteration 12 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:48:49,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:48:49,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1517835964, now seen corresponding path program 1 times [2021-02-21 16:48:49,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:48:49,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570728859] [2021-02-21 16:48:49,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:48:50,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:48:50,087 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:50,088 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:50,089 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:50,089 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:48:50,095 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:50,096 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:50,937 WARN L202 SmtUtils]: Spent 824.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:48:50,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:48:50,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:48:50,957 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:48:50,957 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:48:51,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:48:51,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570728859] [2021-02-21 16:48:51,206 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:48:51,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:48:51,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340637629] [2021-02-21 16:48:51,207 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:48:51,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:48:51,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:48:51,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:48:51,208 INFO L87 Difference]: Start difference. First operand 240058 states and 354997 transitions. Second operand 4 states. [2021-02-21 16:49:24,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:49:24,466 INFO L93 Difference]: Finished difference Result 719042 states and 1063159 transitions. [2021-02-21 16:49:24,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:49:24,467 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 332 [2021-02-21 16:49:24,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:49:25,620 INFO L225 Difference]: With dead ends: 719042 [2021-02-21 16:49:25,620 INFO L226 Difference]: Without dead ends: 479650 [2021-02-21 16:49:25,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:49:26,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479650 states. [2021-02-21 16:49:40,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479650 to 240268. [2021-02-21 16:49:40,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 240268 states. [2021-02-21 16:49:41,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240268 states to 240268 states and 355309 transitions. [2021-02-21 16:49:41,200 INFO L78 Accepts]: Start accepts. Automaton has 240268 states and 355309 transitions. Word has length 332 [2021-02-21 16:49:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:49:41,201 INFO L480 AbstractCegarLoop]: Abstraction has 240268 states and 355309 transitions. [2021-02-21 16:49:41,201 INFO L481 AbstractCegarLoop]: Interpolant automaton has 4 states. [2021-02-21 16:49:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 240268 states and 355309 transitions. [2021-02-21 16:49:41,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 334 [2021-02-21 16:49:41,892 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:49:41,892 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:49:41,892 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-02-21 16:49:41,892 INFO L428 AbstractCegarLoop]: === Iteration 13 === [mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:49:41,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:49:41,893 INFO L82 PathProgramCache]: Analyzing trace with hash -1368682689, now seen corresponding path program 1 times [2021-02-21 16:49:41,893 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:49:41,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555302484] [2021-02-21 16:49:41,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:49:41,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:41,997 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:41,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:41,999 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:41,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:49:42,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:42,005 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:42,862 WARN L202 SmtUtils]: Spent 841.00 ms on a formula simplification that was a NOOP. DAG size: 352 [2021-02-21 16:49:42,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:49:42,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:49:42,880 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:49:42,881 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:49:43,105 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:49:43,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555302484] [2021-02-21 16:49:43,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:49:43,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-02-21 16:49:43,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092882250] [2021-02-21 16:49:43,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states [2021-02-21 16:49:43,107 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:49:43,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-02-21 16:49:43,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:49:43,107 INFO L87 Difference]: Start difference. First operand 240268 states and 355309 transitions. Second operand 4 states. [2021-02-21 16:50:19,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:50:19,052 INFO L93 Difference]: Finished difference Result 719230 states and 1063365 transitions. [2021-02-21 16:50:19,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-02-21 16:50:19,053 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 333 [2021-02-21 16:50:19,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:50:20,544 INFO L225 Difference]: With dead ends: 719230 [2021-02-21 16:50:20,544 INFO L226 Difference]: Without dead ends: 479828 [2021-02-21 16:50:20,893 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-02-21 16:50:21,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479828 states.