/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc config/AutomizerReach.xml -s config/svcomp-Reach-64bit-Automizer_Default.epf -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-bitabs-dcfa08f [2020-12-23 10:26:05,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-23 10:26:05,124 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-23 10:26:05,184 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-23 10:26:05,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-23 10:26:05,190 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-23 10:26:05,195 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-23 10:26:05,201 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-23 10:26:05,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-23 10:26:05,212 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-23 10:26:05,216 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-23 10:26:05,218 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-23 10:26:05,219 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-23 10:26:05,223 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-23 10:26:05,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-23 10:26:05,229 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-23 10:26:05,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-23 10:26:05,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-23 10:26:05,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-23 10:26:05,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-23 10:26:05,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-23 10:26:05,283 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-23 10:26:05,285 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-23 10:26:05,289 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-23 10:26:05,301 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-23 10:26:05,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-23 10:26:05,302 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-23 10:26:05,304 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-23 10:26:05,306 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-23 10:26:05,308 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-23 10:26:05,308 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-23 10:26:05,310 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-23 10:26:05,313 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-23 10:26:05,314 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-23 10:26:05,315 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-23 10:26:05,316 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-23 10:26:05,317 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-23 10:26:05,325 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-23 10:26:05,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-23 10:26:05,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-23 10:26:05,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-23 10:26:05,336 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2020-12-23 10:26:05,399 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-23 10:26:05,400 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-23 10:26:05,405 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-23 10:26:05,406 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-23 10:26:05,406 INFO L138 SettingsManager]: * Use SBE=true [2020-12-23 10:26:05,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-23 10:26:05,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-23 10:26:05,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-23 10:26:05,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-23 10:26:05,408 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-23 10:26:05,409 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-23 10:26:05,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-23 10:26:05,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-23 10:26:05,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-23 10:26:05,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-23 10:26:05,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-23 10:26:05,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-23 10:26:05,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:26:05,412 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-23 10:26:05,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-23 10:26:05,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-23 10:26:05,413 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-23 10:26:05,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-23 10:26:05,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-23 10:26:05,414 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-23 10:26:05,414 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-bitabs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-23 10:26:05,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-23 10:26:05,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-23 10:26:05,950 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-23 10:26:05,951 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-23 10:26:05,952 INFO L275 PluginConnector]: CDTParser initialized [2020-12-23 10:26:05,953 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:26:06,050 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/99fef9f05/43e7a20ec066425c927935534be18bec/FLAG8137f373b [2020-12-23 10:26:06,790 INFO L306 CDTParser]: Found 1 translation units. [2020-12-23 10:26:06,790 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:26:06,805 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/99fef9f05/43e7a20ec066425c927935534be18bec/FLAG8137f373b [2020-12-23 10:26:07,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/data/99fef9f05/43e7a20ec066425c927935534be18bec [2020-12-23 10:26:07,094 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-23 10:26:07,098 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-23 10:26:07,104 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-23 10:26:07,104 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-23 10:26:07,110 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-23 10:26:07,112 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:07,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10a1561a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07, skipping insertion in model container [2020-12-23 10:26:07,116 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:07,133 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-23 10:26:07,228 INFO L178 MainTranslator]: Built tables and reachable declarations left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1179~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1310~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:26:07,680 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[6831,6844] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1387~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2020-12-23 10:26:07,769 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:26:07,801 INFO L203 MainTranslator]: Completed pre-run left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~ep12~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep13~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep21~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep23~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep31~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~ep32~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~id3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__r121~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r131~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r211~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r231~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r311~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r321~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r122~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r132~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r212~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r232~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r312~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__r322~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___5~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1179~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~r1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~r3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~m3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~max3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~st3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_old~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1310~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~main__c1~0,] left hand side expression in assignment: lhs: VariableLHS[~__tmp_1~0,] left hand side expression in assignment: lhs: VariableLHS[~assert__arg~0,] [2020-12-23 10:26:07,887 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-bitabs/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c[6831,6844] left hand side expression in assignment: lhs: VariableLHS[~main__i2~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~check__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~nl3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p31_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p32_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode3~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node3____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p21_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p23_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode2~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node2____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~nl1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~p12_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~p13_new~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~mode1~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_1~0,] left hand side expression in assignment: lhs: VariableLHS[~node1____CPAchecker_TMP_0~0,] left hand side expression in assignment: lhs: VariableLHS[~__return_1387~0,GLOBAL] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___4~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___3~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___2~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___1~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp___0~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] left hand side expression in assignment: lhs: VariableLHS[~init__tmp~0,] [2020-12-23 10:26:07,928 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-23 10:26:07,954 INFO L208 MainTranslator]: Completed translation [2020-12-23 10:26:07,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07 WrapperNode [2020-12-23 10:26:07,955 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-23 10:26:07,956 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-23 10:26:07,956 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-23 10:26:07,956 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-23 10:26:07,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:07,978 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,049 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-23 10:26:08,050 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-23 10:26:08,052 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-23 10:26:08,052 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-23 10:26:08,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,064 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,068 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,069 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,094 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... [2020-12-23 10:26:08,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-23 10:26:08,133 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-23 10:26:08,134 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-23 10:26:08,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-23 10:26:08,140 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (1/1) ... No working directory specified, using /storage/repos/ultimate-bitabs/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-23 10:26:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-23 10:26:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-23 10:26:08,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-23 10:26:08,288 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-23 10:26:09,471 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-23 10:26:09,472 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2020-12-23 10:26:09,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:26:09 BoogieIcfgContainer [2020-12-23 10:26:09,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-23 10:26:09,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-23 10:26:09,477 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-23 10:26:09,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-23 10:26:09,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.12 10:26:07" (1/3) ... [2020-12-23 10:26:09,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163331a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:26:09, skipping insertion in model container [2020-12-23 10:26:09,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.12 10:26:07" (2/3) ... [2020-12-23 10:26:09,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@163331a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.12 10:26:09, skipping insertion in model container [2020-12-23 10:26:09,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.12 10:26:09" (3/3) ... [2020-12-23 10:26:09,485 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_floodmax.3.2.ufo.BOUNDED-6.pals.c.v+cfa-reducer.c [2020-12-23 10:26:09,493 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-23 10:26:09,499 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-23 10:26:09,521 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-23 10:26:09,552 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-23 10:26:09,553 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-23 10:26:09,553 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-23 10:26:09,553 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-23 10:26:09,553 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-23 10:26:09,553 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-23 10:26:09,553 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-23 10:26:09,553 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-23 10:26:09,574 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states. [2020-12-23 10:26:09,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-12-23 10:26:09,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:09,586 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] [2020-12-23 10:26:09,586 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:09,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:09,595 INFO L82 PathProgramCache]: Analyzing trace with hash -1933157835, now seen corresponding path program 1 times [2020-12-23 10:26:09,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:09,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851806341] [2020-12-23 10:26:09,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:10,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:10,041 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851806341] [2020-12-23 10:26:10,042 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:10,042 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:10,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091752339] [2020-12-23 10:26:10,048 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:10,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:10,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:10,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:10,067 INFO L87 Difference]: Start difference. First operand 135 states. Second operand 3 states. [2020-12-23 10:26:10,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:10,181 INFO L93 Difference]: Finished difference Result 288 states and 491 transitions. [2020-12-23 10:26:10,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:10,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 57 [2020-12-23 10:26:10,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:10,198 INFO L225 Difference]: With dead ends: 288 [2020-12-23 10:26:10,199 INFO L226 Difference]: Without dead ends: 201 [2020-12-23 10:26:10,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:10,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-12-23 10:26:10,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 199. [2020-12-23 10:26:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-23 10:26:10,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 313 transitions. [2020-12-23 10:26:10,291 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 313 transitions. Word has length 57 [2020-12-23 10:26:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:10,292 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 313 transitions. [2020-12-23 10:26:10,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:10,292 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 313 transitions. [2020-12-23 10:26:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-12-23 10:26:10,297 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:10,297 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] [2020-12-23 10:26:10,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-23 10:26:10,298 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:10,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:10,300 INFO L82 PathProgramCache]: Analyzing trace with hash -1883490782, now seen corresponding path program 1 times [2020-12-23 10:26:10,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:10,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688836913] [2020-12-23 10:26:10,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:10,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:10,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688836913] [2020-12-23 10:26:10,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:10,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:10,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718003895] [2020-12-23 10:26:10,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:10,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:10,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:10,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:10,510 INFO L87 Difference]: Start difference. First operand 199 states and 313 transitions. Second operand 3 states. [2020-12-23 10:26:10,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:10,573 INFO L93 Difference]: Finished difference Result 475 states and 769 transitions. [2020-12-23 10:26:10,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:10,580 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 59 [2020-12-23 10:26:10,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:10,587 INFO L225 Difference]: With dead ends: 475 [2020-12-23 10:26:10,587 INFO L226 Difference]: Without dead ends: 330 [2020-12-23 10:26:10,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:10,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-12-23 10:26:10,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 328. [2020-12-23 10:26:10,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 328 states. [2020-12-23 10:26:10,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 525 transitions. [2020-12-23 10:26:10,642 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 525 transitions. Word has length 59 [2020-12-23 10:26:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:10,642 INFO L481 AbstractCegarLoop]: Abstraction has 328 states and 525 transitions. [2020-12-23 10:26:10,642 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 525 transitions. [2020-12-23 10:26:10,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:26:10,646 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:10,646 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] [2020-12-23 10:26:10,646 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-23 10:26:10,647 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:10,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:10,648 INFO L82 PathProgramCache]: Analyzing trace with hash -111872728, now seen corresponding path program 1 times [2020-12-23 10:26:10,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:10,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563274990] [2020-12-23 10:26:10,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:10,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:10,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:10,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563274990] [2020-12-23 10:26:10,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:10,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:10,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866012179] [2020-12-23 10:26:10,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:10,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:10,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:10,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:10,830 INFO L87 Difference]: Start difference. First operand 328 states and 525 transitions. Second operand 3 states. [2020-12-23 10:26:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:10,904 INFO L93 Difference]: Finished difference Result 603 states and 981 transitions. [2020-12-23 10:26:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:10,904 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:26:10,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:10,908 INFO L225 Difference]: With dead ends: 603 [2020-12-23 10:26:10,908 INFO L226 Difference]: Without dead ends: 458 [2020-12-23 10:26:10,910 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:10,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2020-12-23 10:26:10,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 456. [2020-12-23 10:26:10,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-12-23 10:26:10,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 735 transitions. [2020-12-23 10:26:10,956 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 735 transitions. Word has length 61 [2020-12-23 10:26:10,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:10,957 INFO L481 AbstractCegarLoop]: Abstraction has 456 states and 735 transitions. [2020-12-23 10:26:10,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:10,957 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 735 transitions. [2020-12-23 10:26:10,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-12-23 10:26:10,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:10,960 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] [2020-12-23 10:26:10,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-23 10:26:10,960 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:10,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:10,961 INFO L82 PathProgramCache]: Analyzing trace with hash -1275396395, now seen corresponding path program 1 times [2020-12-23 10:26:10,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:10,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345708889] [2020-12-23 10:26:10,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:11,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:11,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:11,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345708889] [2020-12-23 10:26:11,094 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:11,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:11,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827271688] [2020-12-23 10:26:11,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:11,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:11,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:11,098 INFO L87 Difference]: Start difference. First operand 456 states and 735 transitions. Second operand 3 states. [2020-12-23 10:26:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:11,163 INFO L93 Difference]: Finished difference Result 1172 states and 1911 transitions. [2020-12-23 10:26:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:11,163 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-12-23 10:26:11,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:11,169 INFO L225 Difference]: With dead ends: 1172 [2020-12-23 10:26:11,170 INFO L226 Difference]: Without dead ends: 793 [2020-12-23 10:26:11,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:11,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2020-12-23 10:26:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2020-12-23 10:26:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 791 states. [2020-12-23 10:26:11,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1277 transitions. [2020-12-23 10:26:11,267 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1277 transitions. Word has length 61 [2020-12-23 10:26:11,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:11,271 INFO L481 AbstractCegarLoop]: Abstraction has 791 states and 1277 transitions. [2020-12-23 10:26:11,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:11,271 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1277 transitions. [2020-12-23 10:26:11,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-12-23 10:26:11,284 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:11,285 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] [2020-12-23 10:26:11,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-23 10:26:11,285 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:11,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:11,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1280827262, now seen corresponding path program 1 times [2020-12-23 10:26:11,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:11,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622031637] [2020-12-23 10:26:11,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:11,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:11,474 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622031637] [2020-12-23 10:26:11,474 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:11,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:26:11,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1396031191] [2020-12-23 10:26:11,475 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:26:11,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:11,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:26:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:11,477 INFO L87 Difference]: Start difference. First operand 791 states and 1277 transitions. Second operand 5 states. [2020-12-23 10:26:11,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:11,696 INFO L93 Difference]: Finished difference Result 2945 states and 4837 transitions. [2020-12-23 10:26:11,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:26:11,699 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 63 [2020-12-23 10:26:11,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:11,714 INFO L225 Difference]: With dead ends: 2945 [2020-12-23 10:26:11,715 INFO L226 Difference]: Without dead ends: 2231 [2020-12-23 10:26:11,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:11,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2231 states. [2020-12-23 10:26:11,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2231 to 1452. [2020-12-23 10:26:11,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1452 states. [2020-12-23 10:26:11,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1452 states to 1452 states and 2348 transitions. [2020-12-23 10:26:11,868 INFO L78 Accepts]: Start accepts. Automaton has 1452 states and 2348 transitions. Word has length 63 [2020-12-23 10:26:11,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:11,872 INFO L481 AbstractCegarLoop]: Abstraction has 1452 states and 2348 transitions. [2020-12-23 10:26:11,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:26:11,873 INFO L276 IsEmpty]: Start isEmpty. Operand 1452 states and 2348 transitions. [2020-12-23 10:26:11,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:26:11,874 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:11,874 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] [2020-12-23 10:26:11,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-23 10:26:11,875 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:11,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:11,875 INFO L82 PathProgramCache]: Analyzing trace with hash -1113443658, now seen corresponding path program 1 times [2020-12-23 10:26:11,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:11,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448219155] [2020-12-23 10:26:11,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:11,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:11,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:11,993 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448219155] [2020-12-23 10:26:11,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:11,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:26:11,994 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993855027] [2020-12-23 10:26:11,995 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:26:11,995 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:11,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:26:11,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:11,998 INFO L87 Difference]: Start difference. First operand 1452 states and 2348 transitions. Second operand 4 states. [2020-12-23 10:26:12,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:12,227 INFO L93 Difference]: Finished difference Result 3856 states and 6322 transitions. [2020-12-23 10:26:12,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:26:12,228 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-12-23 10:26:12,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:12,244 INFO L225 Difference]: With dead ends: 3856 [2020-12-23 10:26:12,244 INFO L226 Difference]: Without dead ends: 2483 [2020-12-23 10:26:12,248 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:12,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2483 states. [2020-12-23 10:26:12,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2483 to 2147. [2020-12-23 10:26:12,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2147 states. [2020-12-23 10:26:12,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2147 states to 2147 states and 3491 transitions. [2020-12-23 10:26:12,453 INFO L78 Accepts]: Start accepts. Automaton has 2147 states and 3491 transitions. Word has length 64 [2020-12-23 10:26:12,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:12,454 INFO L481 AbstractCegarLoop]: Abstraction has 2147 states and 3491 transitions. [2020-12-23 10:26:12,454 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:26:12,454 INFO L276 IsEmpty]: Start isEmpty. Operand 2147 states and 3491 transitions. [2020-12-23 10:26:12,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:26:12,457 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:12,457 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] [2020-12-23 10:26:12,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-23 10:26:12,458 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:12,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:12,459 INFO L82 PathProgramCache]: Analyzing trace with hash 1248232611, now seen corresponding path program 1 times [2020-12-23 10:26:12,464 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:12,464 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697636619] [2020-12-23 10:26:12,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:12,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:12,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:12,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697636619] [2020-12-23 10:26:12,587 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:12,587 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:12,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232515947] [2020-12-23 10:26:12,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:12,588 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:12,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:12,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:12,589 INFO L87 Difference]: Start difference. First operand 2147 states and 3491 transitions. Second operand 3 states. [2020-12-23 10:26:12,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:12,779 INFO L93 Difference]: Finished difference Result 4165 states and 6807 transitions. [2020-12-23 10:26:12,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:12,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:26:12,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:12,798 INFO L225 Difference]: With dead ends: 4165 [2020-12-23 10:26:12,798 INFO L226 Difference]: Without dead ends: 3011 [2020-12-23 10:26:12,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:12,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3011 states. [2020-12-23 10:26:13,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3011 to 3009. [2020-12-23 10:26:13,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3009 states. [2020-12-23 10:26:13,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3009 states to 3009 states and 4878 transitions. [2020-12-23 10:26:13,038 INFO L78 Accepts]: Start accepts. Automaton has 3009 states and 4878 transitions. Word has length 64 [2020-12-23 10:26:13,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:13,038 INFO L481 AbstractCegarLoop]: Abstraction has 3009 states and 4878 transitions. [2020-12-23 10:26:13,038 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:13,038 INFO L276 IsEmpty]: Start isEmpty. Operand 3009 states and 4878 transitions. [2020-12-23 10:26:13,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-12-23 10:26:13,041 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:13,041 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] [2020-12-23 10:26:13,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-23 10:26:13,042 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:13,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:13,043 INFO L82 PathProgramCache]: Analyzing trace with hash 616386787, now seen corresponding path program 1 times [2020-12-23 10:26:13,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:13,044 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1570753676] [2020-12-23 10:26:13,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:13,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:13,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1570753676] [2020-12-23 10:26:13,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:13,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:13,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85054775] [2020-12-23 10:26:13,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:13,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:13,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:13,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:13,118 INFO L87 Difference]: Start difference. First operand 3009 states and 4878 transitions. Second operand 3 states. [2020-12-23 10:26:13,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:13,439 INFO L93 Difference]: Finished difference Result 6431 states and 10590 transitions. [2020-12-23 10:26:13,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:13,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 64 [2020-12-23 10:26:13,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:13,466 INFO L225 Difference]: With dead ends: 6431 [2020-12-23 10:26:13,467 INFO L226 Difference]: Without dead ends: 4345 [2020-12-23 10:26:13,473 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:13,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4345 states. [2020-12-23 10:26:13,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4345 to 4343. [2020-12-23 10:26:13,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4343 states. [2020-12-23 10:26:13,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4343 states to 4343 states and 7079 transitions. [2020-12-23 10:26:13,811 INFO L78 Accepts]: Start accepts. Automaton has 4343 states and 7079 transitions. Word has length 64 [2020-12-23 10:26:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:13,811 INFO L481 AbstractCegarLoop]: Abstraction has 4343 states and 7079 transitions. [2020-12-23 10:26:13,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:13,811 INFO L276 IsEmpty]: Start isEmpty. Operand 4343 states and 7079 transitions. [2020-12-23 10:26:13,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-12-23 10:26:13,812 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:13,812 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] [2020-12-23 10:26:13,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-23 10:26:13,813 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:13,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:13,813 INFO L82 PathProgramCache]: Analyzing trace with hash -214961207, now seen corresponding path program 1 times [2020-12-23 10:26:13,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:13,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306724253] [2020-12-23 10:26:13,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:13,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:13,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:13,906 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306724253] [2020-12-23 10:26:13,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:13,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:26:13,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418002937] [2020-12-23 10:26:13,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:26:13,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:13,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:26:13,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:13,916 INFO L87 Difference]: Start difference. First operand 4343 states and 7079 transitions. Second operand 4 states. [2020-12-23 10:26:14,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:14,539 INFO L93 Difference]: Finished difference Result 12351 states and 20249 transitions. [2020-12-23 10:26:14,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:26:14,540 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-12-23 10:26:14,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:14,592 INFO L225 Difference]: With dead ends: 12351 [2020-12-23 10:26:14,593 INFO L226 Difference]: Without dead ends: 8090 [2020-12-23 10:26:14,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:14,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8090 states. [2020-12-23 10:26:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8090 to 6911. [2020-12-23 10:26:15,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6911 states. [2020-12-23 10:26:15,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6911 states to 6911 states and 11221 transitions. [2020-12-23 10:26:15,118 INFO L78 Accepts]: Start accepts. Automaton has 6911 states and 11221 transitions. Word has length 65 [2020-12-23 10:26:15,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:15,118 INFO L481 AbstractCegarLoop]: Abstraction has 6911 states and 11221 transitions. [2020-12-23 10:26:15,118 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:26:15,119 INFO L276 IsEmpty]: Start isEmpty. Operand 6911 states and 11221 transitions. [2020-12-23 10:26:15,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-12-23 10:26:15,120 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:15,120 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] [2020-12-23 10:26:15,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-23 10:26:15,120 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:15,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:15,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1872749021, now seen corresponding path program 1 times [2020-12-23 10:26:15,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:15,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589858742] [2020-12-23 10:26:15,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:15,277 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:15,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589858742] [2020-12-23 10:26:15,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:15,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:26:15,279 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450261530] [2020-12-23 10:26:15,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:26:15,280 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:15,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:26:15,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:15,285 INFO L87 Difference]: Start difference. First operand 6911 states and 11221 transitions. Second operand 4 states. [2020-12-23 10:26:16,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:16,247 INFO L93 Difference]: Finished difference Result 20038 states and 32688 transitions. [2020-12-23 10:26:16,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:26:16,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-12-23 10:26:16,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:16,316 INFO L225 Difference]: With dead ends: 20038 [2020-12-23 10:26:16,316 INFO L226 Difference]: Without dead ends: 13209 [2020-12-23 10:26:16,331 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:16,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13209 states. [2020-12-23 10:26:17,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13209 to 10779. [2020-12-23 10:26:17,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10779 states. [2020-12-23 10:26:17,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 17427 transitions. [2020-12-23 10:26:17,179 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 17427 transitions. Word has length 66 [2020-12-23 10:26:17,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:17,179 INFO L481 AbstractCegarLoop]: Abstraction has 10779 states and 17427 transitions. [2020-12-23 10:26:17,179 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:26:17,179 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 17427 transitions. [2020-12-23 10:26:17,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-23 10:26:17,180 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:17,180 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] [2020-12-23 10:26:17,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-23 10:26:17,181 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:17,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:17,181 INFO L82 PathProgramCache]: Analyzing trace with hash -1396799506, now seen corresponding path program 1 times [2020-12-23 10:26:17,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:17,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835411432] [2020-12-23 10:26:17,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:17,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:17,348 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835411432] [2020-12-23 10:26:17,348 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:17,348 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:26:17,348 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1813007729] [2020-12-23 10:26:17,349 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:26:17,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:17,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:26:17,351 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:17,352 INFO L87 Difference]: Start difference. First operand 10779 states and 17427 transitions. Second operand 5 states. [2020-12-23 10:26:18,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:18,734 INFO L93 Difference]: Finished difference Result 25359 states and 41228 transitions. [2020-12-23 10:26:18,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-23 10:26:18,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 68 [2020-12-23 10:26:18,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:18,780 INFO L225 Difference]: With dead ends: 25359 [2020-12-23 10:26:18,780 INFO L226 Difference]: Without dead ends: 14662 [2020-12-23 10:26:18,797 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:18,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14662 states. [2020-12-23 10:26:19,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14662 to 10779. [2020-12-23 10:26:19,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10779 states. [2020-12-23 10:26:19,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10779 states to 10779 states and 17302 transitions. [2020-12-23 10:26:19,566 INFO L78 Accepts]: Start accepts. Automaton has 10779 states and 17302 transitions. Word has length 68 [2020-12-23 10:26:19,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:19,566 INFO L481 AbstractCegarLoop]: Abstraction has 10779 states and 17302 transitions. [2020-12-23 10:26:19,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:26:19,567 INFO L276 IsEmpty]: Start isEmpty. Operand 10779 states and 17302 transitions. [2020-12-23 10:26:19,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-12-23 10:26:19,567 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:19,568 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] [2020-12-23 10:26:19,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-23 10:26:19,568 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:19,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:19,569 INFO L82 PathProgramCache]: Analyzing trace with hash -164512453, now seen corresponding path program 1 times [2020-12-23 10:26:19,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:19,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528851638] [2020-12-23 10:26:19,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:19,689 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:19,689 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528851638] [2020-12-23 10:26:19,689 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:19,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:26:19,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624439170] [2020-12-23 10:26:19,690 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:26:19,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:26:19,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:19,692 INFO L87 Difference]: Start difference. First operand 10779 states and 17302 transitions. Second operand 4 states. [2020-12-23 10:26:21,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:21,019 INFO L93 Difference]: Finished difference Result 31699 states and 50901 transitions. [2020-12-23 10:26:21,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:26:21,020 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-12-23 10:26:21,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:21,094 INFO L225 Difference]: With dead ends: 31699 [2020-12-23 10:26:21,094 INFO L226 Difference]: Without dead ends: 20929 [2020-12-23 10:26:21,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:21,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20929 states. [2020-12-23 10:26:22,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20929 to 20927. [2020-12-23 10:26:22,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20927 states. [2020-12-23 10:26:22,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20927 states to 20927 states and 33387 transitions. [2020-12-23 10:26:22,624 INFO L78 Accepts]: Start accepts. Automaton has 20927 states and 33387 transitions. Word has length 71 [2020-12-23 10:26:22,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:22,625 INFO L481 AbstractCegarLoop]: Abstraction has 20927 states and 33387 transitions. [2020-12-23 10:26:22,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:26:22,625 INFO L276 IsEmpty]: Start isEmpty. Operand 20927 states and 33387 transitions. [2020-12-23 10:26:22,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-12-23 10:26:22,626 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:22,626 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] [2020-12-23 10:26:22,627 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-23 10:26:22,627 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:22,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:22,628 INFO L82 PathProgramCache]: Analyzing trace with hash 667892135, now seen corresponding path program 1 times [2020-12-23 10:26:22,628 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:22,628 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515570495] [2020-12-23 10:26:22,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:22,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:22,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:22,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515570495] [2020-12-23 10:26:22,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:22,671 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:22,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548269151] [2020-12-23 10:26:22,672 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:22,672 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:22,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:22,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:22,673 INFO L87 Difference]: Start difference. First operand 20927 states and 33387 transitions. Second operand 3 states. [2020-12-23 10:26:25,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:25,349 INFO L93 Difference]: Finished difference Result 62743 states and 100099 transitions. [2020-12-23 10:26:25,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:25,350 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 72 [2020-12-23 10:26:25,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:25,484 INFO L225 Difference]: With dead ends: 62743 [2020-12-23 10:26:25,484 INFO L226 Difference]: Without dead ends: 41844 [2020-12-23 10:26:25,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:25,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41844 states. [2020-12-23 10:26:27,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41844 to 20929. [2020-12-23 10:26:27,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20929 states. [2020-12-23 10:26:27,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20929 states to 20929 states and 33389 transitions. [2020-12-23 10:26:27,521 INFO L78 Accepts]: Start accepts. Automaton has 20929 states and 33389 transitions. Word has length 72 [2020-12-23 10:26:27,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:27,522 INFO L481 AbstractCegarLoop]: Abstraction has 20929 states and 33389 transitions. [2020-12-23 10:26:27,522 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:27,522 INFO L276 IsEmpty]: Start isEmpty. Operand 20929 states and 33389 transitions. [2020-12-23 10:26:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:26:27,524 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:27,524 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] [2020-12-23 10:26:27,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-23 10:26:27,524 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:27,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:27,525 INFO L82 PathProgramCache]: Analyzing trace with hash -808520295, now seen corresponding path program 1 times [2020-12-23 10:26:27,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:27,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7217911] [2020-12-23 10:26:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:27,604 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7217911] [2020-12-23 10:26:27,605 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:27,605 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:26:27,605 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [813279077] [2020-12-23 10:26:27,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:26:27,606 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:27,606 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:26:27,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:27,607 INFO L87 Difference]: Start difference. First operand 20929 states and 33389 transitions. Second operand 3 states. [2020-12-23 10:26:30,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:30,217 INFO L93 Difference]: Finished difference Result 61383 states and 97998 transitions. [2020-12-23 10:26:30,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:26:30,217 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 73 [2020-12-23 10:26:30,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:30,331 INFO L225 Difference]: With dead ends: 61383 [2020-12-23 10:26:30,331 INFO L226 Difference]: Without dead ends: 40610 [2020-12-23 10:26:30,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:26:30,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40610 states. [2020-12-23 10:26:33,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40610 to 40608. [2020-12-23 10:26:33,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40608 states. [2020-12-23 10:26:33,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40608 states to 40608 states and 64369 transitions. [2020-12-23 10:26:33,553 INFO L78 Accepts]: Start accepts. Automaton has 40608 states and 64369 transitions. Word has length 73 [2020-12-23 10:26:33,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:33,553 INFO L481 AbstractCegarLoop]: Abstraction has 40608 states and 64369 transitions. [2020-12-23 10:26:33,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:26:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 40608 states and 64369 transitions. [2020-12-23 10:26:33,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:26:33,555 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:33,555 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] [2020-12-23 10:26:33,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-23 10:26:33,555 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:33,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:33,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1547459556, now seen corresponding path program 1 times [2020-12-23 10:26:33,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:33,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857882078] [2020-12-23 10:26:33,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:33,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:33,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857882078] [2020-12-23 10:26:33,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:33,674 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-23 10:26:33,674 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502670766] [2020-12-23 10:26:33,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-23 10:26:33,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:33,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-23 10:26:33,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:33,675 INFO L87 Difference]: Start difference. First operand 40608 states and 64369 transitions. Second operand 5 states. [2020-12-23 10:26:39,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:39,201 INFO L93 Difference]: Finished difference Result 119148 states and 188934 transitions. [2020-12-23 10:26:39,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:26:39,202 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 73 [2020-12-23 10:26:39,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:39,376 INFO L225 Difference]: With dead ends: 119148 [2020-12-23 10:26:39,376 INFO L226 Difference]: Without dead ends: 78554 [2020-12-23 10:26:39,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:39,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78554 states. [2020-12-23 10:26:45,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78554 to 78552. [2020-12-23 10:26:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78552 states. [2020-12-23 10:26:45,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78552 states to 78552 states and 123683 transitions. [2020-12-23 10:26:45,320 INFO L78 Accepts]: Start accepts. Automaton has 78552 states and 123683 transitions. Word has length 73 [2020-12-23 10:26:45,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:26:45,320 INFO L481 AbstractCegarLoop]: Abstraction has 78552 states and 123683 transitions. [2020-12-23 10:26:45,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-23 10:26:45,321 INFO L276 IsEmpty]: Start isEmpty. Operand 78552 states and 123683 transitions. [2020-12-23 10:26:45,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-12-23 10:26:45,322 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:26:45,322 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] [2020-12-23 10:26:45,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-23 10:26:45,323 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:26:45,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:26:45,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1975872346, now seen corresponding path program 1 times [2020-12-23 10:26:45,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:26:45,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106018756] [2020-12-23 10:26:45,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:26:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:26:45,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:26:45,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106018756] [2020-12-23 10:26:45,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:26:45,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:26:45,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115329575] [2020-12-23 10:26:45,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:26:45,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:26:45,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:26:45,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:26:45,415 INFO L87 Difference]: Start difference. First operand 78552 states and 123683 transitions. Second operand 4 states. [2020-12-23 10:26:56,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:26:56,622 INFO L93 Difference]: Finished difference Result 230583 states and 363068 transitions. [2020-12-23 10:26:56,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:26:56,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 73 [2020-12-23 10:26:56,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:26:57,016 INFO L225 Difference]: With dead ends: 230583 [2020-12-23 10:26:57,016 INFO L226 Difference]: Without dead ends: 152087 [2020-12-23 10:26:57,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:26:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152087 states. [2020-12-23 10:27:08,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152087 to 152085. [2020-12-23 10:27:08,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152085 states. [2020-12-23 10:27:09,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152085 states to 152085 states and 237673 transitions. [2020-12-23 10:27:09,164 INFO L78 Accepts]: Start accepts. Automaton has 152085 states and 237673 transitions. Word has length 73 [2020-12-23 10:27:09,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:09,165 INFO L481 AbstractCegarLoop]: Abstraction has 152085 states and 237673 transitions. [2020-12-23 10:27:09,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-23 10:27:09,165 INFO L276 IsEmpty]: Start isEmpty. Operand 152085 states and 237673 transitions. [2020-12-23 10:27:09,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-12-23 10:27:09,167 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:09,167 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] [2020-12-23 10:27:09,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-23 10:27:09,168 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:09,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:09,168 INFO L82 PathProgramCache]: Analyzing trace with hash -2004902810, now seen corresponding path program 1 times [2020-12-23 10:27:09,168 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:09,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055847426] [2020-12-23 10:27:09,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:09,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:09,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055847426] [2020-12-23 10:27:09,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:09,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-23 10:27:09,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679690083] [2020-12-23 10:27:09,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-23 10:27:09,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:09,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-23 10:27:09,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:09,204 INFO L87 Difference]: Start difference. First operand 152085 states and 237673 transitions. Second operand 3 states. [2020-12-23 10:27:31,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:27:31,606 INFO L93 Difference]: Finished difference Result 456103 states and 712786 transitions. [2020-12-23 10:27:31,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-23 10:27:31,606 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-12-23 10:27:31,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:27:32,290 INFO L225 Difference]: With dead ends: 456103 [2020-12-23 10:27:32,291 INFO L226 Difference]: Without dead ends: 304109 [2020-12-23 10:27:32,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-23 10:27:33,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304109 states. [2020-12-23 10:27:46,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304109 to 152095. [2020-12-23 10:27:46,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152095 states. [2020-12-23 10:27:47,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152095 states to 152095 states and 237683 transitions. [2020-12-23 10:27:47,150 INFO L78 Accepts]: Start accepts. Automaton has 152095 states and 237683 transitions. Word has length 74 [2020-12-23 10:27:47,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-23 10:27:47,151 INFO L481 AbstractCegarLoop]: Abstraction has 152095 states and 237683 transitions. [2020-12-23 10:27:47,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-23 10:27:47,151 INFO L276 IsEmpty]: Start isEmpty. Operand 152095 states and 237683 transitions. [2020-12-23 10:27:47,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-12-23 10:27:47,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-23 10:27:47,153 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] [2020-12-23 10:27:47,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-23 10:27:47,154 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-23 10:27:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-23 10:27:47,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1175997191, now seen corresponding path program 1 times [2020-12-23 10:27:47,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-23 10:27:47,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780866185] [2020-12-23 10:27:47,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-23 10:27:47,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-23 10:27:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-23 10:27:47,258 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780866185] [2020-12-23 10:27:47,258 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-23 10:27:47,258 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-23 10:27:47,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914056926] [2020-12-23 10:27:47,263 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-23 10:27:47,263 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-23 10:27:47,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-23 10:27:47,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-23 10:27:47,264 INFO L87 Difference]: Start difference. First operand 152095 states and 237683 transitions. Second operand 4 states. [2020-12-23 10:28:12,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-23 10:28:12,325 INFO L93 Difference]: Finished difference Result 446123 states and 697112 transitions. [2020-12-23 10:28:12,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-23 10:28:12,326 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-12-23 10:28:12,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-23 10:28:13,030 INFO L225 Difference]: With dead ends: 446123 [2020-12-23 10:28:13,030 INFO L226 Difference]: Without dead ends: 294129 [2020-12-23 10:28:13,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-23 10:28:13,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294129 states.